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minio/vendor/gopkg.in/mgo.v2/session_test.go

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// mgo - MongoDB driver for Go
//
// Copyright (c) 2010-2012 - Gustavo Niemeyer <gustavo@niemeyer.net>
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package mgo_test
import (
"flag"
"fmt"
"math"
"reflect"
"runtime"
"sort"
"strconv"
"strings"
"time"
. "gopkg.in/check.v1"
"gopkg.in/mgo.v2"
"gopkg.in/mgo.v2/bson"
)
func (s *S) TestRunString(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
result := struct{ Ok int }{}
err = session.Run("ping", &result)
c.Assert(err, IsNil)
c.Assert(result.Ok, Equals, 1)
}
func (s *S) TestRunValue(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
result := struct{ Ok int }{}
err = session.Run(M{"ping": 1}, &result)
c.Assert(err, IsNil)
c.Assert(result.Ok, Equals, 1)
}
func (s *S) TestPing(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
// Just ensure the nonce has been received.
result := struct{}{}
err = session.Run("ping", &result)
mgo.ResetStats()
err = session.Ping()
c.Assert(err, IsNil)
// Pretty boring.
stats := mgo.GetStats()
c.Assert(stats.SentOps, Equals, 1)
c.Assert(stats.ReceivedOps, Equals, 1)
}
func (s *S) TestURLSingle(c *C) {
session, err := mgo.Dial("mongodb://localhost:40001/")
c.Assert(err, IsNil)
defer session.Close()
result := struct{ Ok int }{}
err = session.Run("ping", &result)
c.Assert(err, IsNil)
c.Assert(result.Ok, Equals, 1)
}
func (s *S) TestURLMany(c *C) {
session, err := mgo.Dial("mongodb://localhost:40011,localhost:40012/")
c.Assert(err, IsNil)
defer session.Close()
result := struct{ Ok int }{}
err = session.Run("ping", &result)
c.Assert(err, IsNil)
c.Assert(result.Ok, Equals, 1)
}
func (s *S) TestURLParsing(c *C) {
urls := []string{
"localhost:40001?foo=1&bar=2",
"localhost:40001?foo=1;bar=2",
}
for _, url := range urls {
session, err := mgo.Dial(url)
if session != nil {
session.Close()
}
c.Assert(err, ErrorMatches, "unsupported connection URL option: (foo=1|bar=2)")
}
}
func (s *S) TestInsertFindOne(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"a": 1, "b": 2})
c.Assert(err, IsNil)
err = coll.Insert(M{"a": 1, "b": 3})
c.Assert(err, IsNil)
result := struct{ A, B int }{}
err = coll.Find(M{"a": 1}).Sort("b").One(&result)
c.Assert(err, IsNil)
c.Assert(result.A, Equals, 1)
c.Assert(result.B, Equals, 2)
}
func (s *S) TestInsertFindOneNil(c *C) {
session, err := mgo.Dial("localhost:40002")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.Find(nil).One(nil)
c.Assert(err, ErrorMatches, "unauthorized.*|not authorized.*")
}
func (s *S) TestInsertFindOneMap(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"a": 1, "b": 2})
c.Assert(err, IsNil)
result := make(M)
err = coll.Find(M{"a": 1}).One(result)
c.Assert(err, IsNil)
c.Assert(result["a"], Equals, 1)
c.Assert(result["b"], Equals, 2)
}
func (s *S) TestInsertFindAll(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"a": 1, "b": 2})
c.Assert(err, IsNil)
err = coll.Insert(M{"a": 3, "b": 4})
c.Assert(err, IsNil)
type R struct{ A, B int }
var result []R
assertResult := func() {
c.Assert(len(result), Equals, 2)
c.Assert(result[0].A, Equals, 1)
c.Assert(result[0].B, Equals, 2)
c.Assert(result[1].A, Equals, 3)
c.Assert(result[1].B, Equals, 4)
}
// nil slice
err = coll.Find(nil).Sort("a").All(&result)
c.Assert(err, IsNil)
assertResult()
// Previously allocated slice
allocd := make([]R, 5)
result = allocd
err = coll.Find(nil).Sort("a").All(&result)
c.Assert(err, IsNil)
assertResult()
// Ensure result is backed by the originally allocated array
c.Assert(&result[0], Equals, &allocd[0])
// Non-pointer slice error
f := func() { coll.Find(nil).All(result) }
c.Assert(f, Panics, "result argument must be a slice address")
// Non-slice error
f = func() { coll.Find(nil).All(new(int)) }
c.Assert(f, Panics, "result argument must be a slice address")
}
func (s *S) TestFindRef(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
db1 := session.DB("db1")
db1col1 := db1.C("col1")
db2 := session.DB("db2")
db2col1 := db2.C("col1")
err = db1col1.Insert(M{"_id": 1, "n": 1})
c.Assert(err, IsNil)
err = db1col1.Insert(M{"_id": 2, "n": 2})
c.Assert(err, IsNil)
err = db2col1.Insert(M{"_id": 2, "n": 3})
c.Assert(err, IsNil)
result := struct{ N int }{}
ref1 := &mgo.DBRef{Collection: "col1", Id: 1}
ref2 := &mgo.DBRef{Collection: "col1", Id: 2, Database: "db2"}
err = db1.FindRef(ref1).One(&result)
c.Assert(err, IsNil)
c.Assert(result.N, Equals, 1)
err = db1.FindRef(ref2).One(&result)
c.Assert(err, IsNil)
c.Assert(result.N, Equals, 3)
err = db2.FindRef(ref1).One(&result)
c.Assert(err, Equals, mgo.ErrNotFound)
err = db2.FindRef(ref2).One(&result)
c.Assert(err, IsNil)
c.Assert(result.N, Equals, 3)
err = session.FindRef(ref2).One(&result)
c.Assert(err, IsNil)
c.Assert(result.N, Equals, 3)
f := func() { session.FindRef(ref1).One(&result) }
c.Assert(f, PanicMatches, "Can't resolve database for &mgo.DBRef{Collection:\"col1\", Id:1, Database:\"\"}")
}
func (s *S) TestDatabaseAndCollectionNames(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
db1 := session.DB("db1")
db1col1 := db1.C("col1")
db1col2 := db1.C("col2")
db2 := session.DB("db2")
db2col1 := db2.C("col3")
err = db1col1.Insert(M{"_id": 1})
c.Assert(err, IsNil)
err = db1col2.Insert(M{"_id": 1})
c.Assert(err, IsNil)
err = db2col1.Insert(M{"_id": 1})
c.Assert(err, IsNil)
names, err := session.DatabaseNames()
c.Assert(err, IsNil)
if !reflect.DeepEqual(names, []string{"db1", "db2"}) {
// 2.4+ has "local" as well.
c.Assert(names, DeepEquals, []string{"db1", "db2", "local"})
}
// Try to exercise cursor logic. 2.8.0-rc3 still ignores this.
session.SetBatch(2)
names, err = db1.CollectionNames()
c.Assert(err, IsNil)
c.Assert(names, DeepEquals, []string{"col1", "col2", "system.indexes"})
names, err = db2.CollectionNames()
c.Assert(err, IsNil)
c.Assert(names, DeepEquals, []string{"col3", "system.indexes"})
}
func (s *S) TestSelect(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
coll.Insert(M{"a": 1, "b": 2})
result := struct{ A, B int }{}
err = coll.Find(M{"a": 1}).Select(M{"b": 1}).One(&result)
c.Assert(err, IsNil)
c.Assert(result.A, Equals, 0)
c.Assert(result.B, Equals, 2)
}
func (s *S) TestInlineMap(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
var v, result1 struct {
A int
M map[string]int ",inline"
}
v.A = 1
v.M = map[string]int{"b": 2}
err = coll.Insert(v)
c.Assert(err, IsNil)
noId := M{"_id": 0}
err = coll.Find(nil).Select(noId).One(&result1)
c.Assert(err, IsNil)
c.Assert(result1.A, Equals, 1)
c.Assert(result1.M, DeepEquals, map[string]int{"b": 2})
var result2 M
err = coll.Find(nil).Select(noId).One(&result2)
c.Assert(err, IsNil)
c.Assert(result2, DeepEquals, M{"a": 1, "b": 2})
}
func (s *S) TestUpdate(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
err := coll.Insert(M{"k": n, "n": n})
c.Assert(err, IsNil)
}
// No changes is a no-op and shouldn't return an error.
err = coll.Update(M{"k": 42}, M{"$set": M{"n": 42}})
c.Assert(err, IsNil)
err = coll.Update(M{"k": 42}, M{"$inc": M{"n": 1}})
c.Assert(err, IsNil)
result := make(M)
err = coll.Find(M{"k": 42}).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 43)
err = coll.Update(M{"k": 47}, M{"k": 47, "n": 47})
c.Assert(err, Equals, mgo.ErrNotFound)
err = coll.Find(M{"k": 47}).One(result)
c.Assert(err, Equals, mgo.ErrNotFound)
}
func (s *S) TestUpdateId(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
err := coll.Insert(M{"_id": n, "n": n})
c.Assert(err, IsNil)
}
err = coll.UpdateId(42, M{"$inc": M{"n": 1}})
c.Assert(err, IsNil)
result := make(M)
err = coll.FindId(42).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 43)
err = coll.UpdateId(47, M{"k": 47, "n": 47})
c.Assert(err, Equals, mgo.ErrNotFound)
err = coll.FindId(47).One(result)
c.Assert(err, Equals, mgo.ErrNotFound)
}
func (s *S) TestUpdateNil(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"k": 42, "n": 42})
c.Assert(err, IsNil)
err = coll.Update(nil, M{"$inc": M{"n": 1}})
c.Assert(err, IsNil)
result := make(M)
err = coll.Find(M{"k": 42}).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 43)
err = coll.Insert(M{"k": 45, "n": 45})
c.Assert(err, IsNil)
_, err = coll.UpdateAll(nil, M{"$inc": M{"n": 1}})
c.Assert(err, IsNil)
err = coll.Find(M{"k": 42}).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 44)
err = coll.Find(M{"k": 45}).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 46)
}
func (s *S) TestUpsert(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
err := coll.Insert(M{"k": n, "n": n})
c.Assert(err, IsNil)
}
info, err := coll.Upsert(M{"k": 42}, M{"k": 42, "n": 24})
c.Assert(err, IsNil)
c.Assert(info.Updated, Equals, 1)
c.Assert(info.UpsertedId, IsNil)
result := M{}
err = coll.Find(M{"k": 42}).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 24)
// Insert with internally created id.
info, err = coll.Upsert(M{"k": 47}, M{"k": 47, "n": 47})
c.Assert(err, IsNil)
c.Assert(info.Updated, Equals, 0)
c.Assert(info.UpsertedId, NotNil)
err = coll.Find(M{"k": 47}).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 47)
result = M{}
err = coll.Find(M{"_id": info.UpsertedId}).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 47)
// Insert with provided id.
info, err = coll.Upsert(M{"k": 48}, M{"k": 48, "n": 48, "_id": 48})
c.Assert(err, IsNil)
c.Assert(info.Updated, Equals, 0)
if s.versionAtLeast(2, 6) {
c.Assert(info.UpsertedId, Equals, 48)
} else {
c.Assert(info.UpsertedId, IsNil) // Unfortunate, but that's what Mongo gave us.
}
err = coll.Find(M{"k": 48}).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 48)
}
func (s *S) TestUpsertId(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
err := coll.Insert(M{"_id": n, "n": n})
c.Assert(err, IsNil)
}
info, err := coll.UpsertId(42, M{"n": 24})
c.Assert(err, IsNil)
c.Assert(info.Updated, Equals, 1)
c.Assert(info.UpsertedId, IsNil)
result := M{}
err = coll.FindId(42).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 24)
info, err = coll.UpsertId(47, M{"_id": 47, "n": 47})
c.Assert(err, IsNil)
c.Assert(info.Updated, Equals, 0)
if s.versionAtLeast(2, 6) {
c.Assert(info.UpsertedId, Equals, 47)
} else {
c.Assert(info.UpsertedId, IsNil)
}
err = coll.FindId(47).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 47)
}
func (s *S) TestUpdateAll(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
err := coll.Insert(M{"k": n, "n": n})
c.Assert(err, IsNil)
}
// Don't actually modify the documents. Should still report 4 matching updates.
info, err := coll.UpdateAll(M{"k": M{"$gt": 42}}, M{"$unset": M{"missing": 1}})
c.Assert(err, IsNil)
c.Assert(info.Updated, Equals, 4)
info, err = coll.UpdateAll(M{"k": M{"$gt": 42}}, M{"$inc": M{"n": 1}})
c.Assert(err, IsNil)
c.Assert(info.Updated, Equals, 4)
result := make(M)
err = coll.Find(M{"k": 42}).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 42)
err = coll.Find(M{"k": 43}).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 44)
err = coll.Find(M{"k": 44}).One(result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 45)
if !s.versionAtLeast(2, 6) {
// 2.6 made this invalid.
info, err = coll.UpdateAll(M{"k": 47}, M{"k": 47, "n": 47})
c.Assert(err, Equals, nil)
c.Assert(info.Updated, Equals, 0)
}
}
func (s *S) TestRemove(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
err := coll.Insert(M{"n": n})
c.Assert(err, IsNil)
}
err = coll.Remove(M{"n": M{"$gt": 42}})
c.Assert(err, IsNil)
result := &struct{ N int }{}
err = coll.Find(M{"n": 42}).One(result)
c.Assert(err, IsNil)
c.Assert(result.N, Equals, 42)
err = coll.Find(M{"n": 43}).One(result)
c.Assert(err, Equals, mgo.ErrNotFound)
err = coll.Find(M{"n": 44}).One(result)
c.Assert(err, IsNil)
c.Assert(result.N, Equals, 44)
}
func (s *S) TestRemoveId(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"_id": 40}, M{"_id": 41}, M{"_id": 42})
c.Assert(err, IsNil)
err = coll.RemoveId(41)
c.Assert(err, IsNil)
c.Assert(coll.FindId(40).One(nil), IsNil)
c.Assert(coll.FindId(41).One(nil), Equals, mgo.ErrNotFound)
c.Assert(coll.FindId(42).One(nil), IsNil)
}
func (s *S) TestRemoveUnsafe(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
session.SetSafe(nil)
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"_id": 40}, M{"_id": 41}, M{"_id": 42})
c.Assert(err, IsNil)
err = coll.RemoveId(41)
c.Assert(err, IsNil)
c.Assert(coll.FindId(40).One(nil), IsNil)
c.Assert(coll.FindId(41).One(nil), Equals, mgo.ErrNotFound)
c.Assert(coll.FindId(42).One(nil), IsNil)
}
func (s *S) TestRemoveAll(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
err := coll.Insert(M{"n": n})
c.Assert(err, IsNil)
}
info, err := coll.RemoveAll(M{"n": M{"$gt": 42}})
c.Assert(err, IsNil)
c.Assert(info.Updated, Equals, 0)
c.Assert(info.Removed, Equals, 4)
c.Assert(info.UpsertedId, IsNil)
result := &struct{ N int }{}
err = coll.Find(M{"n": 42}).One(result)
c.Assert(err, IsNil)
c.Assert(result.N, Equals, 42)
err = coll.Find(M{"n": 43}).One(result)
c.Assert(err, Equals, mgo.ErrNotFound)
err = coll.Find(M{"n": 44}).One(result)
c.Assert(err, Equals, mgo.ErrNotFound)
info, err = coll.RemoveAll(nil)
c.Assert(err, IsNil)
c.Assert(info.Updated, Equals, 0)
c.Assert(info.Removed, Equals, 3)
c.Assert(info.UpsertedId, IsNil)
n, err := coll.Find(nil).Count()
c.Assert(err, IsNil)
c.Assert(n, Equals, 0)
}
func (s *S) TestDropDatabase(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
db1 := session.DB("db1")
db1.C("col").Insert(M{"_id": 1})
db2 := session.DB("db2")
db2.C("col").Insert(M{"_id": 1})
err = db1.DropDatabase()
c.Assert(err, IsNil)
names, err := session.DatabaseNames()
c.Assert(err, IsNil)
if !reflect.DeepEqual(names, []string{"db2"}) {
// 2.4+ has "local" as well.
c.Assert(names, DeepEquals, []string{"db2", "local"})
}
err = db2.DropDatabase()
c.Assert(err, IsNil)
names, err = session.DatabaseNames()
c.Assert(err, IsNil)
if !reflect.DeepEqual(names, []string(nil)) {
// 2.4+ has "local" as well.
c.Assert(names, DeepEquals, []string{"local"})
}
}
func (s *S) TestDropCollection(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
db := session.DB("db1")
db.C("col1").Insert(M{"_id": 1})
db.C("col2").Insert(M{"_id": 1})
err = db.C("col1").DropCollection()
c.Assert(err, IsNil)
names, err := db.CollectionNames()
c.Assert(err, IsNil)
c.Assert(names, DeepEquals, []string{"col2", "system.indexes"})
err = db.C("col2").DropCollection()
c.Assert(err, IsNil)
names, err = db.CollectionNames()
c.Assert(err, IsNil)
c.Assert(names, DeepEquals, []string{"system.indexes"})
}
func (s *S) TestCreateCollectionCapped(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
info := &mgo.CollectionInfo{
Capped: true,
MaxBytes: 1024,
MaxDocs: 3,
}
err = coll.Create(info)
c.Assert(err, IsNil)
ns := []int{1, 2, 3, 4, 5}
for _, n := range ns {
err := coll.Insert(M{"n": n})
c.Assert(err, IsNil)
}
n, err := coll.Find(nil).Count()
c.Assert(err, IsNil)
c.Assert(n, Equals, 3)
}
func (s *S) TestCreateCollectionNoIndex(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
info := &mgo.CollectionInfo{
DisableIdIndex: true,
}
err = coll.Create(info)
c.Assert(err, IsNil)
err = coll.Insert(M{"n": 1})
c.Assert(err, IsNil)
indexes, err := coll.Indexes()
c.Assert(indexes, HasLen, 0)
}
func (s *S) TestCreateCollectionForceIndex(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
info := &mgo.CollectionInfo{
ForceIdIndex: true,
Capped: true,
MaxBytes: 1024,
}
err = coll.Create(info)
c.Assert(err, IsNil)
err = coll.Insert(M{"n": 1})
c.Assert(err, IsNil)
indexes, err := coll.Indexes()
c.Assert(indexes, HasLen, 1)
}
func (s *S) TestIsDupValues(c *C) {
c.Assert(mgo.IsDup(nil), Equals, false)
c.Assert(mgo.IsDup(&mgo.LastError{Code: 1}), Equals, false)
c.Assert(mgo.IsDup(&mgo.QueryError{Code: 1}), Equals, false)
c.Assert(mgo.IsDup(&mgo.LastError{Code: 11000}), Equals, true)
c.Assert(mgo.IsDup(&mgo.QueryError{Code: 11000}), Equals, true)
c.Assert(mgo.IsDup(&mgo.LastError{Code: 11001}), Equals, true)
c.Assert(mgo.IsDup(&mgo.QueryError{Code: 11001}), Equals, true)
c.Assert(mgo.IsDup(&mgo.LastError{Code: 12582}), Equals, true)
c.Assert(mgo.IsDup(&mgo.QueryError{Code: 12582}), Equals, true)
lerr := &mgo.LastError{Code: 16460, Err: "error inserting 1 documents to shard ... caused by :: E11000 duplicate key error index: ..."}
c.Assert(mgo.IsDup(lerr), Equals, true)
}
func (s *S) TestIsDupPrimary(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"_id": 1})
c.Assert(err, IsNil)
err = coll.Insert(M{"_id": 1})
c.Assert(err, ErrorMatches, ".*duplicate key error.*")
c.Assert(mgo.IsDup(err), Equals, true)
}
func (s *S) TestIsDupUnique(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
index := mgo.Index{
Key: []string{"a", "b"},
Unique: true,
}
coll := session.DB("mydb").C("mycoll")
err = coll.EnsureIndex(index)
c.Assert(err, IsNil)
err = coll.Insert(M{"a": 1, "b": 1})
c.Assert(err, IsNil)
err = coll.Insert(M{"a": 1, "b": 1})
c.Assert(err, ErrorMatches, ".*duplicate key error.*")
c.Assert(mgo.IsDup(err), Equals, true)
}
func (s *S) TestIsDupCapped(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
info := &mgo.CollectionInfo{
ForceIdIndex: true,
Capped: true,
MaxBytes: 1024,
}
err = coll.Create(info)
c.Assert(err, IsNil)
err = coll.Insert(M{"_id": 1})
c.Assert(err, IsNil)
err = coll.Insert(M{"_id": 1})
// The error was different for capped collections before 2.6.
c.Assert(err, ErrorMatches, ".*duplicate key.*")
// The issue is reduced by using IsDup.
c.Assert(mgo.IsDup(err), Equals, true)
}
func (s *S) TestIsDupFindAndModify(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.EnsureIndex(mgo.Index{Key: []string{"n"}, Unique: true})
c.Assert(err, IsNil)
err = coll.Insert(M{"n": 1})
c.Assert(err, IsNil)
err = coll.Insert(M{"n": 2})
c.Assert(err, IsNil)
_, err = coll.Find(M{"n": 1}).Apply(mgo.Change{Update: M{"$inc": M{"n": 1}}}, bson.M{})
c.Assert(err, ErrorMatches, ".*duplicate key error.*")
c.Assert(mgo.IsDup(err), Equals, true)
}
func (s *S) TestFindAndModify(c *C) {
session, err := mgo.Dial("localhost:40011")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"n": 42})
session.SetMode(mgo.Monotonic, true)
result := M{}
info, err := coll.Find(M{"n": 42}).Apply(mgo.Change{Update: M{"$inc": M{"n": 1}}}, result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 42)
c.Assert(info.Updated, Equals, 1)
c.Assert(info.Removed, Equals, 0)
c.Assert(info.UpsertedId, IsNil)
// A nil result parameter should be acceptable.
info, err = coll.Find(M{"n": 43}).Apply(mgo.Change{Update: M{"$unset": M{"missing": 1}}}, nil)
c.Assert(err, IsNil)
c.Assert(info.Updated, Equals, 1)
c.Assert(info.Removed, Equals, 0)
c.Assert(info.UpsertedId, IsNil)
result = M{}
info, err = coll.Find(M{"n": 43}).Apply(mgo.Change{Update: M{"$inc": M{"n": 1}}, ReturnNew: true}, result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 44)
c.Assert(info.Updated, Equals, 1)
c.Assert(info.Removed, Equals, 0)
c.Assert(info.UpsertedId, IsNil)
result = M{}
info, err = coll.Find(M{"n": 50}).Apply(mgo.Change{Upsert: true, Update: M{"n": 51, "o": 52}}, result)
c.Assert(err, IsNil)
c.Assert(result["n"], IsNil)
c.Assert(info.Updated, Equals, 0)
c.Assert(info.Removed, Equals, 0)
c.Assert(info.UpsertedId, NotNil)
result = M{}
info, err = coll.Find(nil).Sort("-n").Apply(mgo.Change{Update: M{"$inc": M{"n": 1}}, ReturnNew: true}, result)
c.Assert(err, IsNil)
c.Assert(result["n"], Equals, 52)
c.Assert(info.Updated, Equals, 1)
c.Assert(info.Removed, Equals, 0)
c.Assert(info.UpsertedId, IsNil)
result = M{}
info, err = coll.Find(M{"n": 52}).Select(M{"o": 1}).Apply(mgo.Change{Remove: true}, result)
c.Assert(err, IsNil)
c.Assert(result["n"], IsNil)
c.Assert(result["o"], Equals, 52)
c.Assert(info.Updated, Equals, 0)
c.Assert(info.Removed, Equals, 1)
c.Assert(info.UpsertedId, IsNil)
result = M{}
info, err = coll.Find(M{"n": 60}).Apply(mgo.Change{Remove: true}, result)
c.Assert(err, Equals, mgo.ErrNotFound)
c.Assert(len(result), Equals, 0)
c.Assert(info, IsNil)
}
func (s *S) TestFindAndModifyBug997828(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"n": "not-a-number"})
result := make(M)
_, err = coll.Find(M{"n": "not-a-number"}).Apply(mgo.Change{Update: M{"$inc": M{"n": 1}}}, result)
c.Assert(err, ErrorMatches, `(exception: )?Cannot apply \$inc .*`)
if s.versionAtLeast(2, 1) {
qerr, _ := err.(*mgo.QueryError)
c.Assert(qerr, NotNil, Commentf("err: %#v", err))
if s.versionAtLeast(2, 6) {
// Oh, the dance of error codes. :-(
c.Assert(qerr.Code, Equals, 16837)
} else {
c.Assert(qerr.Code, Equals, 10140)
}
} else {
lerr, _ := err.(*mgo.LastError)
c.Assert(lerr, NotNil, Commentf("err: %#v", err))
c.Assert(lerr.Code, Equals, 10140)
}
}
func (s *S) TestCountCollection(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42}
for _, n := range ns {
err := coll.Insert(M{"n": n})
c.Assert(err, IsNil)
}
n, err := coll.Count()
c.Assert(err, IsNil)
c.Assert(n, Equals, 3)
}
func (s *S) TestCountQuery(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42}
for _, n := range ns {
err := coll.Insert(M{"n": n})
c.Assert(err, IsNil)
}
n, err := coll.Find(M{"n": M{"$gt": 40}}).Count()
c.Assert(err, IsNil)
c.Assert(n, Equals, 2)
}
func (s *S) TestCountQuerySorted(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42}
for _, n := range ns {
err := coll.Insert(M{"n": n})
c.Assert(err, IsNil)
}
n, err := coll.Find(M{"n": M{"$gt": 40}}).Sort("n").Count()
c.Assert(err, IsNil)
c.Assert(n, Equals, 2)
}
func (s *S) TestCountSkipLimit(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44}
for _, n := range ns {
err := coll.Insert(M{"n": n})
c.Assert(err, IsNil)
}
n, err := coll.Find(nil).Skip(1).Limit(3).Count()
c.Assert(err, IsNil)
c.Assert(n, Equals, 3)
n, err = coll.Find(nil).Skip(1).Limit(5).Count()
c.Assert(err, IsNil)
c.Assert(n, Equals, 4)
}
func (s *S) TestQueryExplain(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42}
for _, n := range ns {
err := coll.Insert(M{"n": n})
c.Assert(err, IsNil)
}
m := M{}
query := coll.Find(nil).Limit(2)
err = query.Explain(m)
c.Assert(err, IsNil)
if m["queryPlanner"] != nil {
c.Assert(m["executionStats"].(M)["totalDocsExamined"], Equals, 2)
} else {
c.Assert(m["cursor"], Equals, "BasicCursor")
c.Assert(m["nscanned"], Equals, 2)
c.Assert(m["n"], Equals, 2)
}
n := 0
var result M
iter := query.Iter()
for iter.Next(&result) {
n++
}
c.Assert(iter.Close(), IsNil)
c.Assert(n, Equals, 2)
}
func (s *S) TestQuerySetMaxScan(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42}
for _, n := range ns {
err := coll.Insert(M{"n": n})
c.Assert(err, IsNil)
}
query := coll.Find(nil).SetMaxScan(2)
var result []M
err = query.All(&result)
c.Assert(err, IsNil)
c.Assert(result, HasLen, 2)
}
func (s *S) TestQuerySetMaxTime(c *C) {
if !s.versionAtLeast(2, 6) {
c.Skip("SetMaxTime only supported in 2.6+")
}
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
for i := 0; i < 1000; i++ {
err := coll.Insert(M{"n": i})
c.Assert(err, IsNil)
}
query := coll.Find(nil)
query.SetMaxTime(1 * time.Millisecond)
query.Batch(2)
var result []M
err = query.All(&result)
c.Assert(err, ErrorMatches, "operation exceeded time limit")
}
func (s *S) TestQueryHint(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
coll.EnsureIndexKey("a")
m := M{}
err = coll.Find(nil).Hint("a").Explain(m)
c.Assert(err, IsNil)
if m["queryPlanner"] != nil {
m = m["queryPlanner"].(M)
m = m["winningPlan"].(M)
m = m["inputStage"].(M)
c.Assert(m["indexName"], Equals, "a_1")
} else {
c.Assert(m["indexBounds"], NotNil)
c.Assert(m["indexBounds"].(M)["a"], NotNil)
}
}
func (s *S) TestQueryComment(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
db := session.DB("mydb")
coll := db.C("mycoll")
err = db.Run(bson.M{"profile": 2}, nil)
c.Assert(err, IsNil)
ns := []int{40, 41, 42}
for _, n := range ns {
err := coll.Insert(M{"n": n})
c.Assert(err, IsNil)
}
query := coll.Find(bson.M{"n": 41})
query.Comment("some comment")
err = query.One(nil)
c.Assert(err, IsNil)
query = coll.Find(bson.M{"n": 41})
query.Comment("another comment")
err = query.One(nil)
c.Assert(err, IsNil)
n, err := session.DB("mydb").C("system.profile").Find(bson.M{"query.$query.n": 41, "query.$comment": "some comment"}).Count()
c.Assert(err, IsNil)
c.Assert(n, Equals, 1)
}
func (s *S) TestFindOneNotFound(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
result := struct{ A, B int }{}
err = coll.Find(M{"a": 1}).One(&result)
c.Assert(err, Equals, mgo.ErrNotFound)
c.Assert(err, ErrorMatches, "not found")
c.Assert(err == mgo.ErrNotFound, Equals, true)
}
func (s *S) TestFindNil(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"n": 1})
c.Assert(err, IsNil)
result := struct{ N int }{}
err = coll.Find(nil).One(&result)
c.Assert(err, IsNil)
c.Assert(result.N, Equals, 1)
}
func (s *S) TestFindId(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"_id": 41, "n": 41})
c.Assert(err, IsNil)
err = coll.Insert(M{"_id": 42, "n": 42})
c.Assert(err, IsNil)
result := struct{ N int }{}
err = coll.FindId(42).One(&result)
c.Assert(err, IsNil)
c.Assert(result.N, Equals, 42)
}
func (s *S) TestFindIterAll(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
coll.Insert(M{"n": n})
}
session.Refresh() // Release socket.
mgo.ResetStats()
iter := coll.Find(M{"n": M{"$gte": 42}}).Sort("$natural").Prefetch(0).Batch(2).Iter()
result := struct{ N int }{}
for i := 2; i < 7; i++ {
ok := iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(result.N, Equals, ns[i])
if i == 1 {
stats := mgo.GetStats()
c.Assert(stats.ReceivedDocs, Equals, 2)
}
}
ok := iter.Next(&result)
c.Assert(ok, Equals, false)
c.Assert(iter.Close(), IsNil)
session.Refresh() // Release socket.
stats := mgo.GetStats()
c.Assert(stats.SentOps, Equals, 3) // 1*QUERY_OP + 2*GET_MORE_OP
c.Assert(stats.ReceivedOps, Equals, 3) // and their REPLY_OPs.
c.Assert(stats.ReceivedDocs, Equals, 5)
c.Assert(stats.SocketsInUse, Equals, 0)
}
func (s *S) TestFindIterTwiceWithSameQuery(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
for i := 40; i != 47; i++ {
coll.Insert(M{"n": i})
}
query := coll.Find(M{}).Sort("n")
result1 := query.Skip(1).Iter()
result2 := query.Skip(2).Iter()
result := struct{ N int }{}
ok := result2.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(result.N, Equals, 42)
ok = result1.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(result.N, Equals, 41)
}
func (s *S) TestFindIterWithoutResults(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
coll.Insert(M{"n": 42})
iter := coll.Find(M{"n": 0}).Iter()
result := struct{ N int }{}
ok := iter.Next(&result)
c.Assert(ok, Equals, false)
c.Assert(iter.Close(), IsNil)
c.Assert(result.N, Equals, 0)
}
func (s *S) TestFindIterLimit(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
coll.Insert(M{"n": n})
}
session.Refresh() // Release socket.
mgo.ResetStats()
query := coll.Find(M{"n": M{"$gte": 42}}).Sort("$natural").Limit(3)
iter := query.Iter()
result := struct{ N int }{}
for i := 2; i < 5; i++ {
ok := iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(result.N, Equals, ns[i])
}
ok := iter.Next(&result)
c.Assert(ok, Equals, false)
c.Assert(iter.Close(), IsNil)
session.Refresh() // Release socket.
stats := mgo.GetStats()
c.Assert(stats.SentOps, Equals, 2) // 1*QUERY_OP + 1*KILL_CURSORS_OP
c.Assert(stats.ReceivedOps, Equals, 1) // and its REPLY_OP
c.Assert(stats.ReceivedDocs, Equals, 3)
c.Assert(stats.SocketsInUse, Equals, 0)
}
var cursorTimeout = flag.Bool("cursor-timeout", false, "Enable cursor timeout test")
func (s *S) TestFindIterCursorTimeout(c *C) {
if !*cursorTimeout {
c.Skip("-cursor-timeout")
}
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
type Doc struct {
Id int "_id"
}
coll := session.DB("test").C("test")
coll.Remove(nil)
for i := 0; i < 100; i++ {
err = coll.Insert(Doc{i})
c.Assert(err, IsNil)
}
session.SetBatch(1)
iter := coll.Find(nil).Iter()
var doc Doc
if !iter.Next(&doc) {
c.Fatalf("iterator failed to return any documents")
}
for i := 10; i > 0; i-- {
c.Logf("Sleeping... %d minutes to go...", i)
time.Sleep(1*time.Minute + 2*time.Second)
}
// Drain any existing documents that were fetched.
if !iter.Next(&doc) {
c.Fatalf("iterator with timed out cursor failed to return previously cached document")
}
if iter.Next(&doc) {
c.Fatalf("timed out cursor returned document")
}
c.Assert(iter.Err(), Equals, mgo.ErrCursor)
}
func (s *S) TestTooManyItemsLimitBug(c *C) {
if *fast {
c.Skip("-fast")
}
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(runtime.NumCPU()))
mgo.SetDebug(false)
coll := session.DB("mydb").C("mycoll")
words := strings.Split("foo bar baz", " ")
for i := 0; i < 5; i++ {
words = append(words, words...)
}
doc := bson.D{{"words", words}}
inserts := 10000
limit := 5000
iters := 0
c.Assert(inserts > limit, Equals, true)
for i := 0; i < inserts; i++ {
err := coll.Insert(&doc)
c.Assert(err, IsNil)
}
iter := coll.Find(nil).Limit(limit).Iter()
for iter.Next(&doc) {
if iters%100 == 0 {
c.Logf("Seen %d docments", iters)
}
iters++
}
c.Assert(iter.Close(), IsNil)
c.Assert(iters, Equals, limit)
}
func serverCursorsOpen(session *mgo.Session) int {
var result struct {
Cursors struct {
TotalOpen int `bson:"totalOpen"`
TimedOut int `bson:"timedOut"`
}
}
err := session.Run("serverStatus", &result)
if err != nil {
panic(err)
}
return result.Cursors.TotalOpen
}
func (s *S) TestFindIterLimitWithMore(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
// Insane amounts of logging otherwise due to the
// amount of data being shuffled.
mgo.SetDebug(false)
defer mgo.SetDebug(true)
// Should amount to more than 4MB bson payload,
// the default limit per result chunk.
const total = 4096
var d struct{ A [1024]byte }
docs := make([]interface{}, total)
for i := 0; i < total; i++ {
docs[i] = &d
}
err = coll.Insert(docs...)
c.Assert(err, IsNil)
n, err := coll.Count()
c.Assert(err, IsNil)
c.Assert(n, Equals, total)
// First, try restricting to a single chunk with a negative limit.
nresults := 0
iter := coll.Find(nil).Limit(-total).Iter()
var discard struct{}
for iter.Next(&discard) {
nresults++
}
if nresults < total/2 || nresults >= total {
c.Fatalf("Bad result size with negative limit: %d", nresults)
}
cursorsOpen := serverCursorsOpen(session)
// Try again, with a positive limit. Should reach the end now,
// using multiple chunks.
nresults = 0
iter = coll.Find(nil).Limit(total).Iter()
for iter.Next(&discard) {
nresults++
}
c.Assert(nresults, Equals, total)
// Ensure the cursor used is properly killed.
c.Assert(serverCursorsOpen(session), Equals, cursorsOpen)
// Edge case, -MinInt == -MinInt.
nresults = 0
iter = coll.Find(nil).Limit(math.MinInt32).Iter()
for iter.Next(&discard) {
nresults++
}
if nresults < total/2 || nresults >= total {
c.Fatalf("Bad result size with MinInt32 limit: %d", nresults)
}
}
func (s *S) TestFindIterLimitWithBatch(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
coll.Insert(M{"n": n})
}
// Ping the database to ensure the nonce has been received already.
c.Assert(session.Ping(), IsNil)
session.Refresh() // Release socket.
mgo.ResetStats()
query := coll.Find(M{"n": M{"$gte": 42}}).Sort("$natural").Limit(3).Batch(2)
iter := query.Iter()
result := struct{ N int }{}
for i := 2; i < 5; i++ {
ok := iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(result.N, Equals, ns[i])
if i == 3 {
stats := mgo.GetStats()
c.Assert(stats.ReceivedDocs, Equals, 2)
}
}
ok := iter.Next(&result)
c.Assert(ok, Equals, false)
c.Assert(iter.Close(), IsNil)
session.Refresh() // Release socket.
stats := mgo.GetStats()
c.Assert(stats.SentOps, Equals, 3) // 1*QUERY_OP + 1*GET_MORE_OP + 1*KILL_CURSORS_OP
c.Assert(stats.ReceivedOps, Equals, 2) // and its REPLY_OPs
c.Assert(stats.ReceivedDocs, Equals, 3)
c.Assert(stats.SocketsInUse, Equals, 0)
}
func (s *S) TestFindIterSortWithBatch(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
coll.Insert(M{"n": n})
}
// Without this, the logic above breaks because Mongo refuses to
// return a cursor with an in-memory sort.
coll.EnsureIndexKey("n")
// Ping the database to ensure the nonce has been received already.
c.Assert(session.Ping(), IsNil)
session.Refresh() // Release socket.
mgo.ResetStats()
query := coll.Find(M{"n": M{"$lte": 44}}).Sort("-n").Batch(2)
iter := query.Iter()
ns = []int{46, 45, 44, 43, 42, 41, 40}
result := struct{ N int }{}
for i := 2; i < len(ns); i++ {
c.Logf("i=%d", i)
ok := iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(result.N, Equals, ns[i])
if i == 3 {
stats := mgo.GetStats()
c.Assert(stats.ReceivedDocs, Equals, 2)
}
}
ok := iter.Next(&result)
c.Assert(ok, Equals, false)
c.Assert(iter.Close(), IsNil)
session.Refresh() // Release socket.
stats := mgo.GetStats()
c.Assert(stats.SentOps, Equals, 3) // 1*QUERY_OP + 2*GET_MORE_OP
c.Assert(stats.ReceivedOps, Equals, 3) // and its REPLY_OPs
c.Assert(stats.ReceivedDocs, Equals, 5)
c.Assert(stats.SocketsInUse, Equals, 0)
}
// Test tailable cursors in a situation where Next has to sleep to
// respect the timeout requested on Tail.
func (s *S) TestFindTailTimeoutWithSleep(c *C) {
if *fast {
c.Skip("-fast")
}
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
cresult := struct{ ErrMsg string }{}
db := session.DB("mydb")
err = db.Run(bson.D{{"create", "mycoll"}, {"capped", true}, {"size", 1024}}, &cresult)
c.Assert(err, IsNil)
c.Assert(cresult.ErrMsg, Equals, "")
coll := db.C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
coll.Insert(M{"n": n})
}
session.Refresh() // Release socket.
mgo.ResetStats()
timeout := 3 * time.Second
query := coll.Find(M{"n": M{"$gte": 42}}).Sort("$natural").Prefetch(0).Batch(2)
iter := query.Tail(timeout)
n := len(ns)
result := struct{ N int }{}
for i := 2; i != n; i++ {
ok := iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(iter.Err(), IsNil)
c.Assert(iter.Timeout(), Equals, false)
c.Assert(result.N, Equals, ns[i])
if i == 3 { // The batch boundary.
stats := mgo.GetStats()
c.Assert(stats.ReceivedDocs, Equals, 2)
}
}
mgo.ResetStats()
// The following call to Next will block.
go func() {
// The internal AwaitData timing of MongoDB is around 2 seconds,
// so this should force mgo to sleep at least once by itself to
// respect the requested timeout.
time.Sleep(timeout + 5e8*time.Nanosecond)
session := session.New()
defer session.Close()
coll := session.DB("mydb").C("mycoll")
coll.Insert(M{"n": 47})
}()
c.Log("Will wait for Next with N=47...")
ok := iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(iter.Err(), IsNil)
c.Assert(iter.Timeout(), Equals, false)
c.Assert(result.N, Equals, 47)
c.Log("Got Next with N=47!")
// The following may break because it depends a bit on the internal
// timing used by MongoDB's AwaitData logic. If it does, the problem
// will be observed as more GET_MORE_OPs than predicted:
// 1*QUERY for nonce + 1*GET_MORE_OP on Next + 1*GET_MORE_OP on Next after sleep +
// 1*INSERT_OP + 1*QUERY_OP for getLastError on insert of 47
stats := mgo.GetStats()
if s.versionAtLeast(3, 0) { // TODO Will be 2.6 when write commands are enabled for it.
c.Assert(stats.SentOps, Equals, 4)
} else {
c.Assert(stats.SentOps, Equals, 5)
}
c.Assert(stats.ReceivedOps, Equals, 4) // REPLY_OPs for 1*QUERY_OP for nonce + 2*GET_MORE_OPs + 1*QUERY_OP
c.Assert(stats.ReceivedDocs, Equals, 3) // nonce + N=47 result + getLastError response
c.Log("Will wait for a result which will never come...")
started := time.Now()
ok = iter.Next(&result)
c.Assert(ok, Equals, false)
c.Assert(iter.Err(), IsNil)
c.Assert(iter.Timeout(), Equals, true)
c.Assert(started.Before(time.Now().Add(-timeout)), Equals, true)
c.Log("Will now reuse the timed out tail cursor...")
coll.Insert(M{"n": 48})
ok = iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(iter.Close(), IsNil)
c.Assert(iter.Timeout(), Equals, false)
c.Assert(result.N, Equals, 48)
}
// Test tailable cursors in a situation where Next never gets to sleep once
// to respect the timeout requested on Tail.
func (s *S) TestFindTailTimeoutNoSleep(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
cresult := struct{ ErrMsg string }{}
db := session.DB("mydb")
err = db.Run(bson.D{{"create", "mycoll"}, {"capped", true}, {"size", 1024}}, &cresult)
c.Assert(err, IsNil)
c.Assert(cresult.ErrMsg, Equals, "")
coll := db.C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
coll.Insert(M{"n": n})
}
session.Refresh() // Release socket.
mgo.ResetStats()
timeout := 1 * time.Second
query := coll.Find(M{"n": M{"$gte": 42}}).Sort("$natural").Prefetch(0).Batch(2)
iter := query.Tail(timeout)
n := len(ns)
result := struct{ N int }{}
for i := 2; i != n; i++ {
ok := iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(iter.Err(), IsNil)
c.Assert(iter.Timeout(), Equals, false)
c.Assert(result.N, Equals, ns[i])
if i == 3 { // The batch boundary.
stats := mgo.GetStats()
c.Assert(stats.ReceivedDocs, Equals, 2)
}
}
mgo.ResetStats()
// The following call to Next will block.
go func() {
// The internal AwaitData timing of MongoDB is around 2 seconds,
// so this item should arrive within the AwaitData threshold.
time.Sleep(5e8)
session := session.New()
defer session.Close()
coll := session.DB("mydb").C("mycoll")
coll.Insert(M{"n": 47})
}()
c.Log("Will wait for Next with N=47...")
ok := iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(iter.Err(), IsNil)
c.Assert(iter.Timeout(), Equals, false)
c.Assert(result.N, Equals, 47)
c.Log("Got Next with N=47!")
// The following may break because it depends a bit on the internal
// timing used by MongoDB's AwaitData logic. If it does, the problem
// will be observed as more GET_MORE_OPs than predicted:
// 1*QUERY_OP for nonce + 1*GET_MORE_OP on Next +
// 1*INSERT_OP + 1*QUERY_OP for getLastError on insert of 47
stats := mgo.GetStats()
if s.versionAtLeast(3, 0) { // TODO Will be 2.6 when write commands are enabled for it.
c.Assert(stats.SentOps, Equals, 3)
} else {
c.Assert(stats.SentOps, Equals, 4)
}
c.Assert(stats.ReceivedOps, Equals, 3) // REPLY_OPs for 1*QUERY_OP for nonce + 1*GET_MORE_OPs and 1*QUERY_OP
c.Assert(stats.ReceivedDocs, Equals, 3) // nonce + N=47 result + getLastError response
c.Log("Will wait for a result which will never come...")
started := time.Now()
ok = iter.Next(&result)
c.Assert(ok, Equals, false)
c.Assert(iter.Err(), IsNil)
c.Assert(iter.Timeout(), Equals, true)
c.Assert(started.Before(time.Now().Add(-timeout)), Equals, true)
c.Log("Will now reuse the timed out tail cursor...")
coll.Insert(M{"n": 48})
ok = iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(iter.Close(), IsNil)
c.Assert(iter.Timeout(), Equals, false)
c.Assert(result.N, Equals, 48)
}
// Test tailable cursors in a situation where Next never gets to sleep once
// to respect the timeout requested on Tail.
func (s *S) TestFindTailNoTimeout(c *C) {
if *fast {
c.Skip("-fast")
}
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
cresult := struct{ ErrMsg string }{}
db := session.DB("mydb")
err = db.Run(bson.D{{"create", "mycoll"}, {"capped", true}, {"size", 1024}}, &cresult)
c.Assert(err, IsNil)
c.Assert(cresult.ErrMsg, Equals, "")
coll := db.C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
coll.Insert(M{"n": n})
}
session.Refresh() // Release socket.
mgo.ResetStats()
query := coll.Find(M{"n": M{"$gte": 42}}).Sort("$natural").Prefetch(0).Batch(2)
iter := query.Tail(-1)
c.Assert(err, IsNil)
n := len(ns)
result := struct{ N int }{}
for i := 2; i != n; i++ {
ok := iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(result.N, Equals, ns[i])
if i == 3 { // The batch boundary.
stats := mgo.GetStats()
c.Assert(stats.ReceivedDocs, Equals, 2)
}
}
mgo.ResetStats()
// The following call to Next will block.
go func() {
time.Sleep(5e8)
session := session.New()
defer session.Close()
coll := session.DB("mydb").C("mycoll")
coll.Insert(M{"n": 47})
}()
c.Log("Will wait for Next with N=47...")
ok := iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(iter.Err(), IsNil)
c.Assert(iter.Timeout(), Equals, false)
c.Assert(result.N, Equals, 47)
c.Log("Got Next with N=47!")
// The following may break because it depends a bit on the internal
// timing used by MongoDB's AwaitData logic. If it does, the problem
// will be observed as more GET_MORE_OPs than predicted:
// 1*QUERY_OP for nonce + 1*GET_MORE_OP on Next +
// 1*INSERT_OP + 1*QUERY_OP for getLastError on insert of 47
stats := mgo.GetStats()
if s.versionAtLeast(3, 0) { // TODO Will be 2.6 when write commands are enabled for it.
c.Assert(stats.SentOps, Equals, 3)
} else {
c.Assert(stats.SentOps, Equals, 4)
}
c.Assert(stats.ReceivedOps, Equals, 3) // REPLY_OPs for 1*QUERY_OP for nonce + 1*GET_MORE_OPs and 1*QUERY_OP
c.Assert(stats.ReceivedDocs, Equals, 3) // nonce + N=47 result + getLastError response
c.Log("Will wait for a result which will never come...")
gotNext := make(chan bool)
go func() {
ok := iter.Next(&result)
gotNext <- ok
}()
select {
case ok := <-gotNext:
c.Fatalf("Next returned: %v", ok)
case <-time.After(3e9):
// Good. Should still be sleeping at that point.
}
// Closing the session should cause Next to return.
session.Close()
select {
case ok := <-gotNext:
c.Assert(ok, Equals, false)
c.Assert(iter.Err(), ErrorMatches, "Closed explicitly")
c.Assert(iter.Timeout(), Equals, false)
case <-time.After(1e9):
c.Fatal("Closing the session did not unblock Next")
}
}
func (s *S) TestIterNextResetsResult(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{1, 2, 3}
for _, n := range ns {
coll.Insert(M{"n" + strconv.Itoa(n): n})
}
query := coll.Find(nil).Sort("$natural")
i := 0
var sresult *struct{ N1, N2, N3 int }
iter := query.Iter()
for iter.Next(&sresult) {
switch i {
case 0:
c.Assert(sresult.N1, Equals, 1)
c.Assert(sresult.N2+sresult.N3, Equals, 0)
case 1:
c.Assert(sresult.N2, Equals, 2)
c.Assert(sresult.N1+sresult.N3, Equals, 0)
case 2:
c.Assert(sresult.N3, Equals, 3)
c.Assert(sresult.N1+sresult.N2, Equals, 0)
}
i++
}
c.Assert(iter.Close(), IsNil)
i = 0
var mresult M
iter = query.Iter()
for iter.Next(&mresult) {
delete(mresult, "_id")
switch i {
case 0:
c.Assert(mresult, DeepEquals, M{"n1": 1})
case 1:
c.Assert(mresult, DeepEquals, M{"n2": 2})
case 2:
c.Assert(mresult, DeepEquals, M{"n3": 3})
}
i++
}
c.Assert(iter.Close(), IsNil)
i = 0
var iresult interface{}
iter = query.Iter()
for iter.Next(&iresult) {
mresult, ok := iresult.(bson.M)
c.Assert(ok, Equals, true, Commentf("%#v", iresult))
delete(mresult, "_id")
switch i {
case 0:
c.Assert(mresult, DeepEquals, bson.M{"n1": 1})
case 1:
c.Assert(mresult, DeepEquals, bson.M{"n2": 2})
case 2:
c.Assert(mresult, DeepEquals, bson.M{"n3": 3})
}
i++
}
c.Assert(iter.Close(), IsNil)
}
func (s *S) TestFindForOnIter(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
coll.Insert(M{"n": n})
}
session.Refresh() // Release socket.
mgo.ResetStats()
query := coll.Find(M{"n": M{"$gte": 42}}).Sort("$natural").Prefetch(0).Batch(2)
iter := query.Iter()
i := 2
var result *struct{ N int }
err = iter.For(&result, func() error {
c.Assert(i < 7, Equals, true)
c.Assert(result.N, Equals, ns[i])
if i == 1 {
stats := mgo.GetStats()
c.Assert(stats.ReceivedDocs, Equals, 2)
}
i++
return nil
})
c.Assert(err, IsNil)
session.Refresh() // Release socket.
stats := mgo.GetStats()
c.Assert(stats.SentOps, Equals, 3) // 1*QUERY_OP + 2*GET_MORE_OP
c.Assert(stats.ReceivedOps, Equals, 3) // and their REPLY_OPs.
c.Assert(stats.ReceivedDocs, Equals, 5)
c.Assert(stats.SocketsInUse, Equals, 0)
}
func (s *S) TestFindFor(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
coll.Insert(M{"n": n})
}
session.Refresh() // Release socket.
mgo.ResetStats()
query := coll.Find(M{"n": M{"$gte": 42}}).Sort("$natural").Prefetch(0).Batch(2)
i := 2
var result *struct{ N int }
err = query.For(&result, func() error {
c.Assert(i < 7, Equals, true)
c.Assert(result.N, Equals, ns[i])
if i == 1 {
stats := mgo.GetStats()
c.Assert(stats.ReceivedDocs, Equals, 2)
}
i++
return nil
})
c.Assert(err, IsNil)
session.Refresh() // Release socket.
stats := mgo.GetStats()
c.Assert(stats.SentOps, Equals, 3) // 1*QUERY_OP + 2*GET_MORE_OP
c.Assert(stats.ReceivedOps, Equals, 3) // and their REPLY_OPs.
c.Assert(stats.ReceivedDocs, Equals, 5)
c.Assert(stats.SocketsInUse, Equals, 0)
}
func (s *S) TestFindForStopOnError(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
coll.Insert(M{"n": n})
}
query := coll.Find(M{"n": M{"$gte": 42}})
i := 2
var result *struct{ N int }
err = query.For(&result, func() error {
c.Assert(i < 4, Equals, true)
c.Assert(result.N, Equals, ns[i])
if i == 3 {
return fmt.Errorf("stop!")
}
i++
return nil
})
c.Assert(err, ErrorMatches, "stop!")
}
func (s *S) TestFindForResetsResult(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{1, 2, 3}
for _, n := range ns {
coll.Insert(M{"n" + strconv.Itoa(n): n})
}
query := coll.Find(nil).Sort("$natural")
i := 0
var sresult *struct{ N1, N2, N3 int }
err = query.For(&sresult, func() error {
switch i {
case 0:
c.Assert(sresult.N1, Equals, 1)
c.Assert(sresult.N2+sresult.N3, Equals, 0)
case 1:
c.Assert(sresult.N2, Equals, 2)
c.Assert(sresult.N1+sresult.N3, Equals, 0)
case 2:
c.Assert(sresult.N3, Equals, 3)
c.Assert(sresult.N1+sresult.N2, Equals, 0)
}
i++
return nil
})
c.Assert(err, IsNil)
i = 0
var mresult M
err = query.For(&mresult, func() error {
delete(mresult, "_id")
switch i {
case 0:
c.Assert(mresult, DeepEquals, M{"n1": 1})
case 1:
c.Assert(mresult, DeepEquals, M{"n2": 2})
case 2:
c.Assert(mresult, DeepEquals, M{"n3": 3})
}
i++
return nil
})
c.Assert(err, IsNil)
i = 0
var iresult interface{}
err = query.For(&iresult, func() error {
mresult, ok := iresult.(bson.M)
c.Assert(ok, Equals, true, Commentf("%#v", iresult))
delete(mresult, "_id")
switch i {
case 0:
c.Assert(mresult, DeepEquals, bson.M{"n1": 1})
case 1:
c.Assert(mresult, DeepEquals, bson.M{"n2": 2})
case 2:
c.Assert(mresult, DeepEquals, bson.M{"n3": 3})
}
i++
return nil
})
c.Assert(err, IsNil)
}
func (s *S) TestFindIterSnapshot(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
// Insane amounts of logging otherwise due to the
// amount of data being shuffled.
mgo.SetDebug(false)
defer mgo.SetDebug(true)
coll := session.DB("mydb").C("mycoll")
var a [1024000]byte
for n := 0; n < 10; n++ {
err := coll.Insert(M{"_id": n, "n": n, "a1": &a})
c.Assert(err, IsNil)
}
query := coll.Find(M{"n": M{"$gt": -1}}).Batch(2).Prefetch(0)
query.Snapshot()
iter := query.Iter()
seen := map[int]bool{}
result := struct {
Id int "_id"
}{}
for iter.Next(&result) {
if len(seen) == 2 {
// Grow all entries so that they have to move.
// Backwards so that the order is inverted.
for n := 10; n >= 0; n-- {
_, err := coll.Upsert(M{"_id": n}, M{"$set": M{"a2": &a}})
c.Assert(err, IsNil)
}
}
if seen[result.Id] {
c.Fatalf("seen duplicated key: %d", result.Id)
}
seen[result.Id] = true
}
c.Assert(iter.Close(), IsNil)
}
func (s *S) TestSort(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
coll.Insert(M{"a": 1, "b": 1})
coll.Insert(M{"a": 2, "b": 2})
coll.Insert(M{"a": 2, "b": 1})
coll.Insert(M{"a": 0, "b": 1})
coll.Insert(M{"a": 2, "b": 0})
coll.Insert(M{"a": 0, "b": 2})
coll.Insert(M{"a": 1, "b": 2})
coll.Insert(M{"a": 0, "b": 0})
coll.Insert(M{"a": 1, "b": 0})
query := coll.Find(M{})
query.Sort("-a") // Should be ignored.
query.Sort("-b", "a")
iter := query.Iter()
l := make([]int, 18)
r := struct{ A, B int }{}
for i := 0; i != len(l); i += 2 {
ok := iter.Next(&r)
c.Assert(ok, Equals, true)
c.Assert(err, IsNil)
l[i] = r.A
l[i+1] = r.B
}
c.Assert(l, DeepEquals, []int{0, 2, 1, 2, 2, 2, 0, 1, 1, 1, 2, 1, 0, 0, 1, 0, 2, 0})
}
func (s *S) TestSortWithBadArgs(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
f1 := func() { coll.Find(nil).Sort("") }
f2 := func() { coll.Find(nil).Sort("+") }
f3 := func() { coll.Find(nil).Sort("foo", "-") }
for _, f := range []func(){f1, f2, f3} {
c.Assert(f, PanicMatches, "Sort: empty field name")
}
}
func (s *S) TestSortScoreText(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.EnsureIndex(mgo.Index{
Key: []string{"$text:a", "$text:b"},
})
c.Assert(err, IsNil)
err = coll.Insert(M{
"a": "none",
"b": "twice: foo foo",
})
c.Assert(err, IsNil)
err = coll.Insert(M{
"a": "just once: foo",
"b": "none",
})
c.Assert(err, IsNil)
err = coll.Insert(M{
"a": "many: foo foo foo",
"b": "none",
})
c.Assert(err, IsNil)
err = coll.Insert(M{
"a": "none",
"b": "none",
"c": "ignore: foo",
})
c.Assert(err, IsNil)
query := coll.Find(M{"$text": M{"$search": "foo"}})
query.Select(M{"score": M{"$meta": "textScore"}})
query.Sort("$textScore:score")
iter := query.Iter()
var r struct{ A, B string }
var results []string
for iter.Next(&r) {
results = append(results, r.A, r.B)
}
c.Assert(results, DeepEquals, []string{
"many: foo foo foo", "none",
"none", "twice: foo foo",
"just once: foo", "none",
})
}
func (s *S) TestPrefetching(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
const total = 600
mgo.SetDebug(false)
docs := make([]interface{}, total)
for i := 0; i != total; i++ {
docs[i] = bson.D{{"n", i}}
}
err = coll.Insert(docs...)
c.Assert(err, IsNil)
for testi := 0; testi < 5; testi++ {
mgo.ResetStats()
var iter *mgo.Iter
var beforeMore int
switch testi {
case 0: // The default session value.
session.SetBatch(100)
iter = coll.Find(M{}).Iter()
beforeMore = 75
case 2: // Changing the session value.
session.SetBatch(100)
session.SetPrefetch(0.27)
iter = coll.Find(M{}).Iter()
beforeMore = 73
case 1: // Changing via query methods.
iter = coll.Find(M{}).Prefetch(0.27).Batch(100).Iter()
beforeMore = 73
case 3: // With prefetch on first document.
iter = coll.Find(M{}).Prefetch(1.0).Batch(100).Iter()
beforeMore = 0
case 4: // Without prefetch.
iter = coll.Find(M{}).Prefetch(0).Batch(100).Iter()
beforeMore = 100
}
pings := 0
for batchi := 0; batchi < len(docs)/100-1; batchi++ {
c.Logf("Iterating over %d documents on batch %d", beforeMore, batchi)
var result struct{ N int }
for i := 0; i < beforeMore; i++ {
ok := iter.Next(&result)
c.Assert(ok, Equals, true, Commentf("iter.Err: %v", iter.Err()))
}
beforeMore = 99
c.Logf("Done iterating.")
session.Run("ping", nil) // Roundtrip to settle down.
pings++
stats := mgo.GetStats()
c.Assert(stats.ReceivedDocs, Equals, (batchi+1)*100+pings)
c.Logf("Iterating over one more document on batch %d", batchi)
ok := iter.Next(&result)
c.Assert(ok, Equals, true, Commentf("iter.Err: %v", iter.Err()))
c.Logf("Done iterating.")
session.Run("ping", nil) // Roundtrip to settle down.
pings++
stats = mgo.GetStats()
c.Assert(stats.ReceivedDocs, Equals, (batchi+2)*100+pings)
}
}
}
func (s *S) TestSafeSetting(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
// Check the default
safe := session.Safe()
c.Assert(safe.W, Equals, 0)
c.Assert(safe.WMode, Equals, "")
c.Assert(safe.WTimeout, Equals, 0)
c.Assert(safe.FSync, Equals, false)
c.Assert(safe.J, Equals, false)
// Tweak it
session.SetSafe(&mgo.Safe{W: 1, WTimeout: 2, FSync: true})
safe = session.Safe()
c.Assert(safe.W, Equals, 1)
c.Assert(safe.WMode, Equals, "")
c.Assert(safe.WTimeout, Equals, 2)
c.Assert(safe.FSync, Equals, true)
c.Assert(safe.J, Equals, false)
// Reset it again.
session.SetSafe(&mgo.Safe{})
safe = session.Safe()
c.Assert(safe.W, Equals, 0)
c.Assert(safe.WMode, Equals, "")
c.Assert(safe.WTimeout, Equals, 0)
c.Assert(safe.FSync, Equals, false)
c.Assert(safe.J, Equals, false)
// Ensure safety to something more conservative.
session.SetSafe(&mgo.Safe{W: 5, WTimeout: 6, J: true})
safe = session.Safe()
c.Assert(safe.W, Equals, 5)
c.Assert(safe.WMode, Equals, "")
c.Assert(safe.WTimeout, Equals, 6)
c.Assert(safe.FSync, Equals, false)
c.Assert(safe.J, Equals, true)
// Ensure safety to something less conservative won't change it.
session.EnsureSafe(&mgo.Safe{W: 4, WTimeout: 7})
safe = session.Safe()
c.Assert(safe.W, Equals, 5)
c.Assert(safe.WMode, Equals, "")
c.Assert(safe.WTimeout, Equals, 6)
c.Assert(safe.FSync, Equals, false)
c.Assert(safe.J, Equals, true)
// But to something more conservative will.
session.EnsureSafe(&mgo.Safe{W: 6, WTimeout: 4, FSync: true})
safe = session.Safe()
c.Assert(safe.W, Equals, 6)
c.Assert(safe.WMode, Equals, "")
c.Assert(safe.WTimeout, Equals, 4)
c.Assert(safe.FSync, Equals, true)
c.Assert(safe.J, Equals, false)
// Even more conservative.
session.EnsureSafe(&mgo.Safe{WMode: "majority", WTimeout: 2})
safe = session.Safe()
c.Assert(safe.W, Equals, 0)
c.Assert(safe.WMode, Equals, "majority")
c.Assert(safe.WTimeout, Equals, 2)
c.Assert(safe.FSync, Equals, true)
c.Assert(safe.J, Equals, false)
// WMode always overrides, whatever it is, but J doesn't.
session.EnsureSafe(&mgo.Safe{WMode: "something", J: true})
safe = session.Safe()
c.Assert(safe.W, Equals, 0)
c.Assert(safe.WMode, Equals, "something")
c.Assert(safe.WTimeout, Equals, 2)
c.Assert(safe.FSync, Equals, true)
c.Assert(safe.J, Equals, false)
// EnsureSafe with nil does nothing.
session.EnsureSafe(nil)
safe = session.Safe()
c.Assert(safe.W, Equals, 0)
c.Assert(safe.WMode, Equals, "something")
c.Assert(safe.WTimeout, Equals, 2)
c.Assert(safe.FSync, Equals, true)
c.Assert(safe.J, Equals, false)
// Changing the safety of a cloned session doesn't touch the original.
clone := session.Clone()
defer clone.Close()
clone.EnsureSafe(&mgo.Safe{WMode: "foo"})
safe = session.Safe()
c.Assert(safe.WMode, Equals, "something")
}
func (s *S) TestSafeInsert(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
// Insert an element with a predefined key.
err = coll.Insert(M{"_id": 1})
c.Assert(err, IsNil)
mgo.ResetStats()
// Session should be safe by default, so inserting it again must fail.
err = coll.Insert(M{"_id": 1})
c.Assert(err, ErrorMatches, ".*E11000 duplicate.*")
c.Assert(err.(*mgo.LastError).Code, Equals, 11000)
// It must have sent two operations (INSERT_OP + getLastError QUERY_OP)
stats := mgo.GetStats()
// TODO Will be 2.6 when write commands are enabled for it.
if s.versionAtLeast(3, 0) {
c.Assert(stats.SentOps, Equals, 1)
} else {
c.Assert(stats.SentOps, Equals, 2)
}
mgo.ResetStats()
// If we disable safety, though, it won't complain.
session.SetSafe(nil)
err = coll.Insert(M{"_id": 1})
c.Assert(err, IsNil)
// Must have sent a single operation this time (just the INSERT_OP)
stats = mgo.GetStats()
c.Assert(stats.SentOps, Equals, 1)
}
func (s *S) TestSafeParameters(c *C) {
session, err := mgo.Dial("localhost:40011")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
// Tweak the safety parameters to something unachievable.
session.SetSafe(&mgo.Safe{W: 4, WTimeout: 100})
err = coll.Insert(M{"_id": 1})
c.Assert(err, ErrorMatches, "timeout|timed out waiting for slaves|Not enough data-bearing nodes|waiting for replication timed out") // :-(
if !s.versionAtLeast(2, 6) {
// 2.6 turned it into a query error.
c.Assert(err.(*mgo.LastError).WTimeout, Equals, true)
}
}
func (s *S) TestQueryErrorOne(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
result := struct {
Err string "$err"
}{}
err = coll.Find(M{"a": 1}).Select(M{"a": M{"b": 1}}).One(&result)
c.Assert(err, ErrorMatches, ".*Unsupported projection option:.*")
c.Assert(err.(*mgo.QueryError).Message, Matches, ".*Unsupported projection option:.*")
if s.versionAtLeast(2, 6) {
// Oh, the dance of error codes. :-(
c.Assert(err.(*mgo.QueryError).Code, Equals, 17287)
} else {
c.Assert(err.(*mgo.QueryError).Code, Equals, 13097)
}
// The result should be properly unmarshalled with QueryError
c.Assert(result.Err, Matches, ".*Unsupported projection option:.*")
}
func (s *S) TestQueryErrorNext(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
result := struct {
Err string "$err"
}{}
iter := coll.Find(M{"a": 1}).Select(M{"a": M{"b": 1}}).Iter()
ok := iter.Next(&result)
c.Assert(ok, Equals, false)
err = iter.Close()
c.Assert(err, ErrorMatches, ".*Unsupported projection option:.*")
c.Assert(err.(*mgo.QueryError).Message, Matches, ".*Unsupported projection option:.*")
if s.versionAtLeast(2, 6) {
// Oh, the dance of error codes. :-(
c.Assert(err.(*mgo.QueryError).Code, Equals, 17287)
} else {
c.Assert(err.(*mgo.QueryError).Code, Equals, 13097)
}
c.Assert(iter.Err(), Equals, err)
// The result should be properly unmarshalled with QueryError
c.Assert(result.Err, Matches, ".*Unsupported projection option:.*")
}
var indexTests = []struct {
index mgo.Index
expected M
}{{
mgo.Index{
Key: []string{"a"},
Background: true,
},
M{
"name": "a_1",
"key": M{"a": 1},
"ns": "mydb.mycoll",
"background": true,
},
}, {
mgo.Index{
Key: []string{"a", "-b"},
Unique: true,
DropDups: true,
},
M{
"name": "a_1_b_-1",
"key": M{"a": 1, "b": -1},
"ns": "mydb.mycoll",
"unique": true,
"dropDups": true,
},
}, {
mgo.Index{
Key: []string{"@loc_old"}, // Obsolete
Min: -500,
Max: 500,
Bits: 32,
},
M{
"name": "loc_old_2d",
"key": M{"loc_old": "2d"},
"ns": "mydb.mycoll",
"min": -500,
"max": 500,
"bits": 32,
},
}, {
mgo.Index{
Key: []string{"$2d:loc"},
Min: -500,
Max: 500,
Bits: 32,
},
M{
"name": "loc_2d",
"key": M{"loc": "2d"},
"ns": "mydb.mycoll",
"min": -500,
"max": 500,
"bits": 32,
},
}, {
mgo.Index{
Key: []string{"$geoHaystack:loc", "type"},
BucketSize: 1,
},
M{
"name": "loc_geoHaystack_type_1",
"key": M{"loc": "geoHaystack", "type": 1},
"ns": "mydb.mycoll",
"bucketSize": 1.0,
},
}, {
mgo.Index{
Key: []string{"$text:a", "$text:b"},
Weights: map[string]int{"b": 42},
},
M{
"name": "a_text_b_text",
"key": M{"_fts": "text", "_ftsx": 1},
"ns": "mydb.mycoll",
"weights": M{"a": 1, "b": 42},
"default_language": "english",
"language_override": "language",
"textIndexVersion": 2,
},
}, {
mgo.Index{
Key: []string{"$text:a"},
DefaultLanguage: "portuguese",
LanguageOverride: "idioma",
},
M{
"name": "a_text",
"key": M{"_fts": "text", "_ftsx": 1},
"ns": "mydb.mycoll",
"weights": M{"a": 1},
"default_language": "portuguese",
"language_override": "idioma",
"textIndexVersion": 2,
},
}, {
mgo.Index{
Key: []string{"$text:$**"},
},
M{
"name": "$**_text",
"key": M{"_fts": "text", "_ftsx": 1},
"ns": "mydb.mycoll",
"weights": M{"$**": 1},
"default_language": "english",
"language_override": "language",
"textIndexVersion": 2,
},
}}
func (s *S) TestEnsureIndex(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
idxs := session.DB("mydb").C("system.indexes")
for _, test := range indexTests {
if !s.versionAtLeast(2, 4) && test.expected["weights"] != nil {
// No text indexes until 2.4.
continue
}
err = coll.EnsureIndex(test.index)
c.Assert(err, IsNil)
obtained := M{}
err = idxs.Find(M{"name": test.expected["name"]}).One(obtained)
c.Assert(err, IsNil)
delete(obtained, "v")
if s.versionAtLeast(2, 7) {
// Was deprecated in 2.6, and not being reported by 2.7+.
delete(test.expected, "dropDups")
}
c.Assert(obtained, DeepEquals, test.expected)
err = coll.DropIndex(test.index.Key...)
c.Assert(err, IsNil)
}
}
func (s *S) TestEnsureIndexWithBadInfo(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.EnsureIndex(mgo.Index{})
c.Assert(err, ErrorMatches, "invalid index key:.*")
err = coll.EnsureIndex(mgo.Index{Key: []string{""}})
c.Assert(err, ErrorMatches, "invalid index key:.*")
}
func (s *S) TestEnsureIndexWithUnsafeSession(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
session.SetSafe(nil)
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"a": 1})
c.Assert(err, IsNil)
err = coll.Insert(M{"a": 1})
c.Assert(err, IsNil)
// Should fail since there are duplicated entries.
index := mgo.Index{
Key: []string{"a"},
Unique: true,
}
err = coll.EnsureIndex(index)
c.Assert(err, ErrorMatches, ".*duplicate key error.*")
}
func (s *S) TestEnsureIndexKey(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.EnsureIndexKey("a")
c.Assert(err, IsNil)
err = coll.EnsureIndexKey("a", "-b")
c.Assert(err, IsNil)
sysidx := session.DB("mydb").C("system.indexes")
result1 := M{}
err = sysidx.Find(M{"name": "a_1"}).One(result1)
c.Assert(err, IsNil)
result2 := M{}
err = sysidx.Find(M{"name": "a_1_b_-1"}).One(result2)
c.Assert(err, IsNil)
delete(result1, "v")
expected1 := M{
"name": "a_1",
"key": M{"a": 1},
"ns": "mydb.mycoll",
}
c.Assert(result1, DeepEquals, expected1)
delete(result2, "v")
expected2 := M{
"name": "a_1_b_-1",
"key": M{"a": 1, "b": -1},
"ns": "mydb.mycoll",
}
c.Assert(result2, DeepEquals, expected2)
}
func (s *S) TestEnsureIndexDropIndex(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.EnsureIndexKey("a")
c.Assert(err, IsNil)
err = coll.EnsureIndexKey("-b")
c.Assert(err, IsNil)
err = coll.DropIndex("-b")
c.Assert(err, IsNil)
sysidx := session.DB("mydb").C("system.indexes")
dummy := &struct{}{}
err = sysidx.Find(M{"name": "a_1"}).One(dummy)
c.Assert(err, IsNil)
err = sysidx.Find(M{"name": "b_1"}).One(dummy)
c.Assert(err, Equals, mgo.ErrNotFound)
err = coll.DropIndex("a")
c.Assert(err, IsNil)
err = sysidx.Find(M{"name": "a_1"}).One(dummy)
c.Assert(err, Equals, mgo.ErrNotFound)
err = coll.DropIndex("a")
c.Assert(err, ErrorMatches, "index not found.*")
}
func (s *S) TestEnsureIndexCaching(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.EnsureIndexKey("a")
c.Assert(err, IsNil)
mgo.ResetStats()
// Second EnsureIndex should be cached and do nothing.
err = coll.EnsureIndexKey("a")
c.Assert(err, IsNil)
stats := mgo.GetStats()
c.Assert(stats.SentOps, Equals, 0)
// Resetting the cache should make it contact the server again.
session.ResetIndexCache()
err = coll.EnsureIndexKey("a")
c.Assert(err, IsNil)
stats = mgo.GetStats()
c.Assert(stats.SentOps > 0, Equals, true)
// Dropping the index should also drop the cached index key.
err = coll.DropIndex("a")
c.Assert(err, IsNil)
mgo.ResetStats()
err = coll.EnsureIndexKey("a")
c.Assert(err, IsNil)
stats = mgo.GetStats()
c.Assert(stats.SentOps > 0, Equals, true)
}
func (s *S) TestEnsureIndexGetIndexes(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.EnsureIndexKey("-b")
c.Assert(err, IsNil)
err = coll.EnsureIndexKey("a")
c.Assert(err, IsNil)
// Obsolete.
err = coll.EnsureIndexKey("@c")
c.Assert(err, IsNil)
err = coll.EnsureIndexKey("$2d:d")
c.Assert(err, IsNil)
// Try to exercise cursor logic. 2.8.0-rc3 still ignores this.
session.SetBatch(2)
indexes, err := coll.Indexes()
c.Assert(err, IsNil)
c.Assert(indexes[0].Name, Equals, "_id_")
c.Assert(indexes[1].Name, Equals, "a_1")
c.Assert(indexes[1].Key, DeepEquals, []string{"a"})
c.Assert(indexes[2].Name, Equals, "b_-1")
c.Assert(indexes[2].Key, DeepEquals, []string{"-b"})
c.Assert(indexes[3].Name, Equals, "c_2d")
c.Assert(indexes[3].Key, DeepEquals, []string{"$2d:c"})
c.Assert(indexes[4].Name, Equals, "d_2d")
c.Assert(indexes[4].Key, DeepEquals, []string{"$2d:d"})
}
func (s *S) TestEnsureIndexEvalGetIndexes(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = session.Run(bson.D{{"eval", "db.getSiblingDB('mydb').mycoll.ensureIndex({b: -1})"}}, nil)
c.Assert(err, IsNil)
err = session.Run(bson.D{{"eval", "db.getSiblingDB('mydb').mycoll.ensureIndex({a: 1})"}}, nil)
c.Assert(err, IsNil)
err = session.Run(bson.D{{"eval", "db.getSiblingDB('mydb').mycoll.ensureIndex({c: -1, e: 1})"}}, nil)
c.Assert(err, IsNil)
err = session.Run(bson.D{{"eval", "db.getSiblingDB('mydb').mycoll.ensureIndex({d: '2d'})"}}, nil)
c.Assert(err, IsNil)
indexes, err := coll.Indexes()
c.Assert(err, IsNil)
c.Assert(indexes[0].Name, Equals, "_id_")
c.Assert(indexes[1].Name, Equals, "a_1")
c.Assert(indexes[1].Key, DeepEquals, []string{"a"})
c.Assert(indexes[2].Name, Equals, "b_-1")
c.Assert(indexes[2].Key, DeepEquals, []string{"-b"})
c.Assert(indexes[3].Name, Equals, "c_-1_e_1")
c.Assert(indexes[3].Key, DeepEquals, []string{"-c", "e"})
if s.versionAtLeast(2, 2) {
c.Assert(indexes[4].Name, Equals, "d_2d")
c.Assert(indexes[4].Key, DeepEquals, []string{"$2d:d"})
} else {
c.Assert(indexes[4].Name, Equals, "d_")
c.Assert(indexes[4].Key, DeepEquals, []string{"$2d:d"})
}
}
var testTTL = flag.Bool("test-ttl", false, "test TTL collections (may take 1 minute)")
func (s *S) TestEnsureIndexExpireAfter(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
session.SetSafe(nil)
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"n": 1, "t": time.Now().Add(-120 * time.Second)})
c.Assert(err, IsNil)
err = coll.Insert(M{"n": 2, "t": time.Now()})
c.Assert(err, IsNil)
// Should fail since there are duplicated entries.
index := mgo.Index{
Key: []string{"t"},
ExpireAfter: 1 * time.Minute,
}
err = coll.EnsureIndex(index)
c.Assert(err, IsNil)
indexes, err := coll.Indexes()
c.Assert(err, IsNil)
c.Assert(indexes[1].Name, Equals, "t_1")
c.Assert(indexes[1].ExpireAfter, Equals, 1*time.Minute)
if *testTTL {
worked := false
stop := time.Now().Add(70 * time.Second)
for time.Now().Before(stop) {
n, err := coll.Count()
c.Assert(err, IsNil)
if n == 1 {
worked = true
break
}
c.Assert(n, Equals, 2)
c.Logf("Still has 2 entries...")
time.Sleep(1 * time.Second)
}
if !worked {
c.Fatalf("TTL index didn't work")
}
}
}
func (s *S) TestDistinct(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
for _, i := range []int{1, 4, 6, 2, 2, 3, 4} {
coll.Insert(M{"n": i})
}
var result []int
err = coll.Find(M{"n": M{"$gt": 2}}).Sort("n").Distinct("n", &result)
sort.IntSlice(result).Sort()
c.Assert(result, DeepEquals, []int{3, 4, 6})
}
func (s *S) TestMapReduce(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
for _, i := range []int{1, 4, 6, 2, 2, 3, 4} {
coll.Insert(M{"n": i})
}
job := &mgo.MapReduce{
Map: "function() { emit(this.n, 1); }",
Reduce: "function(key, values) { return Array.sum(values); }",
}
var result []struct {
Id int "_id"
Value int
}
info, err := coll.Find(M{"n": M{"$gt": 2}}).MapReduce(job, &result)
c.Assert(err, IsNil)
c.Assert(info.InputCount, Equals, 4)
c.Assert(info.EmitCount, Equals, 4)
c.Assert(info.OutputCount, Equals, 3)
c.Assert(info.VerboseTime, IsNil)
expected := map[int]int{3: 1, 4: 2, 6: 1}
for _, item := range result {
c.Logf("Item: %#v", &item)
c.Assert(item.Value, Equals, expected[item.Id])
expected[item.Id] = -1
}
}
func (s *S) TestMapReduceFinalize(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
for _, i := range []int{1, 4, 6, 2, 2, 3, 4} {
coll.Insert(M{"n": i})
}
job := &mgo.MapReduce{
Map: "function() { emit(this.n, 1) }",
Reduce: "function(key, values) { return Array.sum(values) }",
Finalize: "function(key, count) { return {count: count} }",
}
var result []struct {
Id int "_id"
Value struct{ Count int }
}
_, err = coll.Find(nil).MapReduce(job, &result)
c.Assert(err, IsNil)
expected := map[int]int{1: 1, 2: 2, 3: 1, 4: 2, 6: 1}
for _, item := range result {
c.Logf("Item: %#v", &item)
c.Assert(item.Value.Count, Equals, expected[item.Id])
expected[item.Id] = -1
}
}
func (s *S) TestMapReduceToCollection(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
for _, i := range []int{1, 4, 6, 2, 2, 3, 4} {
coll.Insert(M{"n": i})
}
job := &mgo.MapReduce{
Map: "function() { emit(this.n, 1); }",
Reduce: "function(key, values) { return Array.sum(values); }",
Out: "mr",
}
info, err := coll.Find(nil).MapReduce(job, nil)
c.Assert(err, IsNil)
c.Assert(info.InputCount, Equals, 7)
c.Assert(info.EmitCount, Equals, 7)
c.Assert(info.OutputCount, Equals, 5)
c.Assert(info.Collection, Equals, "mr")
c.Assert(info.Database, Equals, "mydb")
expected := map[int]int{1: 1, 2: 2, 3: 1, 4: 2, 6: 1}
var item *struct {
Id int "_id"
Value int
}
mr := session.DB("mydb").C("mr")
iter := mr.Find(nil).Iter()
for iter.Next(&item) {
c.Logf("Item: %#v", &item)
c.Assert(item.Value, Equals, expected[item.Id])
expected[item.Id] = -1
}
c.Assert(iter.Close(), IsNil)
}
func (s *S) TestMapReduceToOtherDb(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
for _, i := range []int{1, 4, 6, 2, 2, 3, 4} {
coll.Insert(M{"n": i})
}
job := &mgo.MapReduce{
Map: "function() { emit(this.n, 1); }",
Reduce: "function(key, values) { return Array.sum(values); }",
Out: bson.D{{"replace", "mr"}, {"db", "otherdb"}},
}
info, err := coll.Find(nil).MapReduce(job, nil)
c.Assert(err, IsNil)
c.Assert(info.InputCount, Equals, 7)
c.Assert(info.EmitCount, Equals, 7)
c.Assert(info.OutputCount, Equals, 5)
c.Assert(info.Collection, Equals, "mr")
c.Assert(info.Database, Equals, "otherdb")
expected := map[int]int{1: 1, 2: 2, 3: 1, 4: 2, 6: 1}
var item *struct {
Id int "_id"
Value int
}
mr := session.DB("otherdb").C("mr")
iter := mr.Find(nil).Iter()
for iter.Next(&item) {
c.Logf("Item: %#v", &item)
c.Assert(item.Value, Equals, expected[item.Id])
expected[item.Id] = -1
}
c.Assert(iter.Close(), IsNil)
}
func (s *S) TestMapReduceOutOfOrder(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
for _, i := range []int{1, 4, 6, 2, 2, 3, 4} {
coll.Insert(M{"n": i})
}
job := &mgo.MapReduce{
Map: "function() { emit(this.n, 1); }",
Reduce: "function(key, values) { return Array.sum(values); }",
Out: bson.M{"a": "a", "z": "z", "replace": "mr", "db": "otherdb", "b": "b", "y": "y"},
}
info, err := coll.Find(nil).MapReduce(job, nil)
c.Assert(err, IsNil)
c.Assert(info.Collection, Equals, "mr")
c.Assert(info.Database, Equals, "otherdb")
}
func (s *S) TestMapReduceScope(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
coll.Insert(M{"n": 1})
job := &mgo.MapReduce{
Map: "function() { emit(this.n, x); }",
Reduce: "function(key, values) { return Array.sum(values); }",
Scope: M{"x": 42},
}
var result []bson.M
_, err = coll.Find(nil).MapReduce(job, &result)
c.Assert(len(result), Equals, 1)
c.Assert(result[0]["value"], Equals, 42.0)
}
func (s *S) TestMapReduceVerbose(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
for i := 0; i < 100; i++ {
err = coll.Insert(M{"n": i})
c.Assert(err, IsNil)
}
job := &mgo.MapReduce{
Map: "function() { emit(this.n, 1); }",
Reduce: "function(key, values) { return Array.sum(values); }",
Verbose: true,
}
info, err := coll.Find(nil).MapReduce(job, nil)
c.Assert(err, IsNil)
c.Assert(info.VerboseTime, NotNil)
}
func (s *S) TestMapReduceLimit(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
for _, i := range []int{1, 4, 6, 2, 2, 3, 4} {
coll.Insert(M{"n": i})
}
job := &mgo.MapReduce{
Map: "function() { emit(this.n, 1); }",
Reduce: "function(key, values) { return Array.sum(values); }",
}
var result []bson.M
_, err = coll.Find(nil).Limit(3).MapReduce(job, &result)
c.Assert(err, IsNil)
c.Assert(len(result), Equals, 3)
}
func (s *S) TestBuildInfo(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
info, err := session.BuildInfo()
c.Assert(err, IsNil)
var v []int
for i, a := range strings.Split(info.Version, ".") {
for _, token := range []string{"-rc", "-pre"} {
if i == 2 && strings.Contains(a, token) {
a = a[:strings.Index(a, token)]
info.VersionArray[len(info.VersionArray)-1] = 0
}
}
n, err := strconv.Atoi(a)
c.Assert(err, IsNil)
v = append(v, n)
}
for len(v) < 4 {
v = append(v, 0)
}
c.Assert(info.VersionArray, DeepEquals, v)
c.Assert(info.GitVersion, Matches, "[a-z0-9]+")
c.Assert(info.SysInfo, Matches, ".*[0-9:]+.*")
if info.Bits != 32 && info.Bits != 64 {
c.Fatalf("info.Bits is %d", info.Bits)
}
if info.MaxObjectSize < 8192 {
c.Fatalf("info.MaxObjectSize seems too small: %d", info.MaxObjectSize)
}
}
func (s *S) TestZeroTimeRoundtrip(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
var d struct{ T time.Time }
conn := session.DB("mydb").C("mycoll")
err = conn.Insert(d)
c.Assert(err, IsNil)
var result bson.M
err = conn.Find(nil).One(&result)
c.Assert(err, IsNil)
t, isTime := result["t"].(time.Time)
c.Assert(isTime, Equals, true)
c.Assert(t, Equals, time.Time{})
}
func (s *S) TestFsyncLock(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
clone := session.Clone()
defer clone.Close()
err = session.FsyncLock()
c.Assert(err, IsNil)
done := make(chan time.Time)
go func() {
time.Sleep(3e9)
now := time.Now()
err := session.FsyncUnlock()
c.Check(err, IsNil)
done <- now
}()
err = clone.DB("mydb").C("mycoll").Insert(bson.M{"n": 1})
unlocked := time.Now()
unlocking := <-done
c.Assert(err, IsNil)
c.Assert(unlocked.After(unlocking), Equals, true)
c.Assert(unlocked.Sub(unlocking) < 1e9, Equals, true)
}
func (s *S) TestFsync(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
// Not much to do here. Just a smoke check.
err = session.Fsync(false)
c.Assert(err, IsNil)
err = session.Fsync(true)
c.Assert(err, IsNil)
}
func (s *S) TestRepairCursor(c *C) {
if !s.versionAtLeast(2, 7) {
c.Skip("RepairCursor only works on 2.7+")
}
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
session.SetBatch(2)
coll := session.DB("mydb").C("mycoll3")
err = coll.DropCollection()
ns := []int{0, 10, 20, 30, 40, 50}
for _, n := range ns {
coll.Insert(M{"n": n})
}
repairIter := coll.Repair()
c.Assert(repairIter.Err(), IsNil)
result := struct{ N int }{}
resultCounts := map[int]int{}
for repairIter.Next(&result) {
resultCounts[result.N]++
}
c.Assert(repairIter.Next(&result), Equals, false)
c.Assert(repairIter.Err(), IsNil)
c.Assert(repairIter.Close(), IsNil)
// Verify that the results of the repair cursor are valid.
// The repair cursor can return multiple copies
// of the same document, so to check correctness we only
// need to verify that at least 1 of each document was returned.
for _, key := range ns {
c.Assert(resultCounts[key] > 0, Equals, true)
}
}
func (s *S) TestPipeIter(c *C) {
if !s.versionAtLeast(2, 1) {
c.Skip("Pipe only works on 2.1+")
}
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
coll.Insert(M{"n": n})
}
pipe := coll.Pipe([]M{{"$match": M{"n": M{"$gte": 42}}}})
// Ensure cursor logic is working by forcing a small batch.
pipe.Batch(2)
// Smoke test for AllowDiskUse.
pipe.AllowDiskUse()
iter := pipe.Iter()
result := struct{ N int }{}
for i := 2; i < 7; i++ {
ok := iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(result.N, Equals, ns[i])
}
c.Assert(iter.Next(&result), Equals, false)
c.Assert(iter.Close(), IsNil)
}
func (s *S) TestPipeAll(c *C) {
if !s.versionAtLeast(2, 1) {
c.Skip("Pipe only works on 2.1+")
}
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
err := coll.Insert(M{"n": n})
c.Assert(err, IsNil)
}
var result []struct{ N int }
err = coll.Pipe([]M{{"$match": M{"n": M{"$gte": 42}}}}).All(&result)
c.Assert(err, IsNil)
for i := 2; i < 7; i++ {
c.Assert(result[i-2].N, Equals, ns[i])
}
}
func (s *S) TestPipeOne(c *C) {
if !s.versionAtLeast(2, 1) {
c.Skip("Pipe only works on 2.1+")
}
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
coll.Insert(M{"a": 1, "b": 2})
result := struct{ A, B int }{}
pipe := coll.Pipe([]M{{"$project": M{"a": 1, "b": M{"$add": []interface{}{"$b", 1}}}}})
err = pipe.One(&result)
c.Assert(err, IsNil)
c.Assert(result.A, Equals, 1)
c.Assert(result.B, Equals, 3)
pipe = coll.Pipe([]M{{"$match": M{"a": 2}}})
err = pipe.One(&result)
c.Assert(err, Equals, mgo.ErrNotFound)
}
func (s *S) TestPipeExplain(c *C) {
if !s.versionAtLeast(2, 1) {
c.Skip("Pipe only works on 2.1+")
}
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
coll.Insert(M{"a": 1, "b": 2})
pipe := coll.Pipe([]M{{"$project": M{"a": 1, "b": M{"$add": []interface{}{"$b", 1}}}}})
// The explain command result changes across versions.
var result struct{ Ok int }
err = pipe.Explain(&result)
c.Assert(err, IsNil)
c.Assert(result.Ok, Equals, 1)
}
func (s *S) TestBatch1Bug(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
for i := 0; i < 3; i++ {
err := coll.Insert(M{"n": i})
c.Assert(err, IsNil)
}
var ns []struct{ N int }
err = coll.Find(nil).Batch(1).All(&ns)
c.Assert(err, IsNil)
c.Assert(len(ns), Equals, 3)
session.SetBatch(1)
err = coll.Find(nil).All(&ns)
c.Assert(err, IsNil)
c.Assert(len(ns), Equals, 3)
}
func (s *S) TestInterfaceIterBug(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
for i := 0; i < 3; i++ {
err := coll.Insert(M{"n": i})
c.Assert(err, IsNil)
}
var result interface{}
i := 0
iter := coll.Find(nil).Sort("n").Iter()
for iter.Next(&result) {
c.Assert(result.(bson.M)["n"], Equals, i)
i++
}
c.Assert(iter.Close(), IsNil)
}
func (s *S) TestFindIterCloseKillsCursor(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
cursors := serverCursorsOpen(session)
coll := session.DB("mydb").C("mycoll")
ns := []int{40, 41, 42, 43, 44, 45, 46}
for _, n := range ns {
err = coll.Insert(M{"n": n})
c.Assert(err, IsNil)
}
iter := coll.Find(nil).Batch(2).Iter()
c.Assert(iter.Next(bson.M{}), Equals, true)
c.Assert(iter.Close(), IsNil)
c.Assert(serverCursorsOpen(session), Equals, cursors)
}
func (s *S) TestLogReplay(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
for i := 0; i < 5; i++ {
err = coll.Insert(M{"ts": time.Now()})
c.Assert(err, IsNil)
}
iter := coll.Find(nil).LogReplay().Iter()
if s.versionAtLeast(2, 6) {
// This used to fail in 2.4. Now it's just a smoke test.
c.Assert(iter.Err(), IsNil)
} else {
c.Assert(iter.Next(bson.M{}), Equals, false)
c.Assert(iter.Err(), ErrorMatches, "no ts field in query")
}
}
func (s *S) TestSetCursorTimeout(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
err = coll.Insert(M{"n": 42})
// This is just a smoke test. Won't wait 10 minutes for an actual timeout.
session.SetCursorTimeout(0)
var result struct{ N int }
iter := coll.Find(nil).Iter()
c.Assert(iter.Next(&result), Equals, true)
c.Assert(result.N, Equals, 42)
c.Assert(iter.Next(&result), Equals, false)
}
func (s *S) TestNewIterNoServer(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
data, err := bson.Marshal(bson.M{"a": 1})
coll := session.DB("mydb").C("mycoll")
iter := coll.NewIter(nil, []bson.Raw{{3, data}}, 42, nil)
var result struct{ A int }
ok := iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(result.A, Equals, 1)
ok = iter.Next(&result)
c.Assert(ok, Equals, false)
c.Assert(iter.Err(), ErrorMatches, "server not available")
}
func (s *S) TestNewIterNoServerPresetErr(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
data, err := bson.Marshal(bson.M{"a": 1})
coll := session.DB("mydb").C("mycoll")
iter := coll.NewIter(nil, []bson.Raw{{3, data}}, 42, fmt.Errorf("my error"))
var result struct{ A int }
ok := iter.Next(&result)
c.Assert(ok, Equals, true)
c.Assert(result.A, Equals, 1)
ok = iter.Next(&result)
c.Assert(ok, Equals, false)
c.Assert(iter.Err(), ErrorMatches, "my error")
}
// --------------------------------------------------------------------------
// Some benchmarks that require a running database.
func (s *S) BenchmarkFindIterRaw(c *C) {
session, err := mgo.Dial("localhost:40001")
c.Assert(err, IsNil)
defer session.Close()
coll := session.DB("mydb").C("mycoll")
doc := bson.D{
{"f2", "a short string"},
{"f3", bson.D{{"1", "one"}, {"2", 2.0}}},
{"f4", []string{"a", "b", "c", "d", "e", "f", "g"}},
}
for i := 0; i < c.N+1; i++ {
err := coll.Insert(doc)
c.Assert(err, IsNil)
}
session.SetBatch(c.N)
var raw bson.Raw
iter := coll.Find(nil).Iter()
iter.Next(&raw)
c.ResetTimer()
i := 0
for iter.Next(&raw) {
i++
}
c.StopTimer()
c.Assert(iter.Err(), IsNil)
c.Assert(i, Equals, c.N)
}
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