Adding tests and a fix for get object where bucket is not found

pkg/api/api_object_handlers.go

@@ -83,6 +83,13 @@ func (server *minioAPI) getObjectHandler(w http.ResponseWriter, req *http.Reques
 			w.WriteHeader(error.HTTPStatusCode)
 			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
 		}
+	case drivers.BucketNotFound:
+		{
+			error := errorCodeError(NoSuchBucket)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
 	case drivers.ObjectNameInvalid:
 		{
 			error := errorCodeError(NoSuchKey)
@@ -97,7 +104,7 @@ func (server *minioAPI) getObjectHandler(w http.ResponseWriter, req *http.Reques
 			w.WriteHeader(error.HTTPStatusCode)
 			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
 		}
-	case drivers.ImplementationError:
+	default:
 		{
 			// Embed errors log on serve side
 			log.Errorln(err)

pkg/api/api_test.go

@@ -31,18 +31,40 @@ import (
 	"github.com/minio-io/minio/pkg/api"
 	"github.com/minio-io/minio/pkg/drivers"
 	"github.com/minio-io/minio/pkg/drivers/memory"
+	"github.com/minio-io/minio/pkg/drivers/mocks"
+	"github.com/stretchr/testify/mock"
 
 	. "gopkg.in/check.v1"
 )
 
 func Test(t *testing.T) { TestingT(t) }
 
-type MySuite struct{}
+type MySuite struct {
+	Driver func() drivers.Driver
+}
 
-var _ = Suite(&MySuite{})
+var _ = Suite(&MySuite{
+	Driver: func() drivers.Driver {
+		return startDriver()
+	},
+})
+
+var _ = Suite(&MySuite{
+	Driver: func() drivers.Driver {
+		_, _, driver := memory.Start()
+		return driver
+	},
+})
 
 func (s *MySuite) TestNonExistantObject(c *C) {
-	_, _, driver := memory.Start()
+	driver := s.Driver()
+	switch typedDriver := driver.(type) {
+	case *mocks.Driver:
+		{
+			typedDriver.On("GetObjectMetadata", "bucket", "object", "").Return(drivers.ObjectMetadata{}, drivers.BucketNotFound{Bucket: "bucket"}).Once()
+			defer typedDriver.AssertExpectations(c)
+		}
+	}
 	httpHandler := api.HTTPHandler("", driver)
 	testServer := httptest.NewServer(httpHandler)
 	defer testServer.Close()
@@ -54,7 +76,26 @@ func (s *MySuite) TestNonExistantObject(c *C) {
 }
 
 func (s *MySuite) TestEmptyObject(c *C) {
-	_, _, driver := memory.Start()
+	driver := s.Driver()
+	switch typedDriver := driver.(type) {
+	case *mocks.Driver:
+		{
+			metadata := drivers.ObjectMetadata{
+				Bucket:      "bucket",
+				Key:         "key",
+				ContentType: "application/octet-stream",
+				Created:     time.Now(),
+				Md5:         "d41d8cd98f00b204e9800998ecf8427e",
+				Size:        0,
+			}
+			typedDriver.On("CreateBucket", "bucket").Return(nil).Once()
+			typedDriver.On("CreateObject", "bucket", "object", "", "", mock.Anything).Return(nil).Once()
+			typedDriver.On("GetObjectMetadata", "bucket", "object", "").Return(metadata, nil).Once()
+			typedDriver.On("GetObject", mock.Anything, "bucket", "object").Return(int64(0), nil).Once()
+			typedDriver.On("GetObjectMetadata", "bucket", "object", "").Return(metadata, nil).Once()
+			defer typedDriver.AssertExpectations(c)
+		}
+	}
 	httpHandler := api.HTTPHandler("", driver)
 	testServer := httptest.NewServer(httpHandler)
 	defer testServer.Close()
@@ -74,12 +115,29 @@ func (s *MySuite) TestEmptyObject(c *C) {
 	metadata, err := driver.GetObjectMetadata("bucket", "object", "")
 	c.Assert(err, IsNil)
 	verifyHeaders(c, response.Header, metadata.Created, 0, "application/octet-stream", metadata.Md5)
-
-	// TODO Test Headers
 }
 
 func (s *MySuite) TestObject(c *C) {
-	_, _, driver := memory.Start()
+	driver := s.Driver()
+	switch typedDriver := driver.(type) {
+	case *mocks.Driver:
+		{
+			metadata := drivers.ObjectMetadata{
+				Bucket:      "bucket",
+				Key:         "key",
+				ContentType: "application/octet-stream",
+				Created:     time.Now(),
+				Md5:         "5eb63bbbe01eeed093cb22bb8f5acdc3",
+				Size:        11,
+			}
+			typedDriver.On("CreateBucket", "bucket").Return(nil).Once()
+			typedDriver.On("CreateObject", "bucket", "object", "", "", mock.Anything).Return(nil).Once()
+			typedDriver.On("GetObjectMetadata", "bucket", "object", "").Return(metadata, nil).Twice()
+			typedDriver.SetGetObjectWriter("bucket", "object", []byte("hello world"))
+			typedDriver.On("GetObject", mock.Anything, "bucket", "object").Return(int64(0), nil).Once()
+			defer typedDriver.AssertExpectations(c)
+		}
+	}
 	httpHandler := api.HTTPHandler("", driver)
 	testServer := httptest.NewServer(httpHandler)
 	defer testServer.Close()
@@ -94,7 +152,8 @@ func (s *MySuite) TestObject(c *C) {
 
 	responseBody, err := ioutil.ReadAll(response.Body)
 	c.Assert(err, IsNil)
-	c.Assert(true, Equals, bytes.Equal(responseBody, []byte("hello world")))
+	println(string(responseBody))
+	c.Assert(responseBody, DeepEquals, []byte("hello world"))
 
 	metadata, err := driver.GetObjectMetadata("bucket", "object", "")
 	c.Assert(err, IsNil)
@@ -102,7 +161,45 @@ func (s *MySuite) TestObject(c *C) {
 }
 
 func (s *MySuite) TestMultipleObjects(c *C) {
-	_, _, driver := memory.Start()
+	driver := s.Driver()
+	var typedDriver *mocks.Driver
+	switch driver := driver.(type) {
+	case *mocks.Driver:
+		{
+			typedDriver = driver
+
+			defer typedDriver.AssertExpectations(c)
+		}
+	default:
+		{
+			typedDriver = startDriver()
+		}
+	}
+	metadata1 := drivers.ObjectMetadata{
+		Bucket:      "bucket",
+		Key:         "object1",
+		ContentType: "application/octet-stream",
+		Created:     time.Now(),
+		// TODO correct md5
+		Md5:  "5eb63bbbe01eeed093cb22bb8f5acdc3",
+		Size: 9,
+	}
+	metadata2 := drivers.ObjectMetadata{
+		Bucket:      "bucket",
+		Key:         "object2",
+		ContentType: "application/octet-stream",
+		Created:     time.Now(),
+		Md5:         "5eb63bbbe01eeed093cb22bb8f5acdc3", // TODO correct md5
+		Size:        9,
+	}
+	metadata3 := drivers.ObjectMetadata{
+		Bucket:      "bucket",
+		Key:         "object3",
+		ContentType: "application/octet-stream",
+		Created:     time.Now(),
+		Md5:         "5eb63bbbe01eeed093cb22bb8f5acdc3", // TODO correct md5
+		Size:        11,
+	}
 	httpHandler := api.HTTPHandler("", driver)
 	testServer := httptest.NewServer(httpHandler)
 	defer testServer.Close()
@@ -111,12 +208,17 @@ func (s *MySuite) TestMultipleObjects(c *C) {
 	buffer2 := bytes.NewBufferString("hello two")
 	buffer3 := bytes.NewBufferString("hello three")
 
+	typedDriver.On("CreateBucket", "bucket").Return(nil).Once()
 	driver.CreateBucket("bucket")
+	typedDriver.On("CreateObject", "bucket", "object1", "", "", mock.Anything).Return(nil).Once()
 	driver.CreateObject("bucket", "object1", "", "", buffer1)
+	typedDriver.On("CreateObject", "bucket", "object2", "", "", mock.Anything).Return(nil).Once()
 	driver.CreateObject("bucket", "object2", "", "", buffer2)
+	typedDriver.On("CreateObject", "bucket", "object3", "", "", mock.Anything).Return(nil).Once()
 	driver.CreateObject("bucket", "object3", "", "", buffer3)
 
 	// test non-existant object
+	typedDriver.On("GetObjectMetadata", "bucket", "object", "").Return(drivers.ObjectMetadata{}, drivers.ObjectNotFound{}).Once()
 	response, err := http.Get(testServer.URL + "/bucket/object")
 	c.Assert(err, IsNil)
 	c.Assert(response.StatusCode, Equals, http.StatusNotFound)
@@ -125,10 +227,14 @@ func (s *MySuite) TestMultipleObjects(c *C) {
 	//// test object 1
 
 	// get object
+	typedDriver.On("GetObjectMetadata", "bucket", "object1", "").Return(metadata1, nil).Once()
+	typedDriver.SetGetObjectWriter("bucket", "object1", []byte("hello one"))
+	typedDriver.On("GetObject", mock.Anything, "bucket", "object1").Return(int64(0), nil).Once()
 	response, err = http.Get(testServer.URL + "/bucket/object1")
 	c.Assert(err, IsNil)
 
 	// get metadata
+	typedDriver.On("GetObjectMetadata", "bucket", "object1", "").Return(metadata1, nil).Once()
 	metadata, err := driver.GetObjectMetadata("bucket", "object1", "")
 	c.Assert(err, IsNil)
 	c.Assert(response.StatusCode, Equals, http.StatusOK)
@@ -144,10 +250,14 @@ func (s *MySuite) TestMultipleObjects(c *C) {
 
 	// test object 2
 	// get object
+	typedDriver.On("GetObjectMetadata", "bucket", "object2", "").Return(metadata2, nil).Once()
+	typedDriver.SetGetObjectWriter("bucket", "object2", []byte("hello two"))
+	typedDriver.On("GetObject", mock.Anything, "bucket", "object2").Return(int64(0), nil).Once()
 	response, err = http.Get(testServer.URL + "/bucket/object2")
 	c.Assert(err, IsNil)
 
 	// get metadata
+	typedDriver.On("GetObjectMetadata", "bucket", "object2", "").Return(metadata2, nil).Once()
 	metadata, err = driver.GetObjectMetadata("bucket", "object2", "")
 	c.Assert(err, IsNil)
 	c.Assert(response.StatusCode, Equals, http.StatusOK)
@@ -163,10 +273,14 @@ func (s *MySuite) TestMultipleObjects(c *C) {
 
 	// test object 3
 	// get object
+	typedDriver.On("GetObjectMetadata", "bucket", "object3", "").Return(metadata3, nil).Once()
+	typedDriver.SetGetObjectWriter("bucket", "object3", []byte("hello three"))
+	typedDriver.On("GetObject", mock.Anything, "bucket", "object3").Return(int64(0), nil).Once()
 	response, err = http.Get(testServer.URL + "/bucket/object3")
 	c.Assert(err, IsNil)
 
 	// get metadata
+	typedDriver.On("GetObjectMetadata", "bucket", "object3", "").Return(metadata3, nil).Once()
 	metadata, err = driver.GetObjectMetadata("bucket", "object3", "")
 	c.Assert(err, IsNil)
 	c.Assert(response.StatusCode, Equals, http.StatusOK)
@@ -182,7 +296,20 @@ func (s *MySuite) TestMultipleObjects(c *C) {
 }
 
 func (s *MySuite) TestNotImplemented(c *C) {
-	_, _, driver := memory.Start()
+	driver := s.Driver()
+	var typedDriver *mocks.Driver
+	switch driver := driver.(type) {
+	case *mocks.Driver:
+		{
+			typedDriver = driver
+			defer typedDriver.AssertExpectations(c)
+		}
+	default:
+		{
+			// we never assert expectations
+			typedDriver = startDriver()
+		}
+	}
 	httpHandler := api.HTTPHandler("", driver)
 	testServer := httptest.NewServer(httpHandler)
 	defer testServer.Close()
@@ -193,38 +320,86 @@ func (s *MySuite) TestNotImplemented(c *C) {
 }
 
 func (s *MySuite) TestHeader(c *C) {
-	_, _, driver := memory.Start()
+	driver := s.Driver()
+	var typedDriver *mocks.Driver
+	switch driver := driver.(type) {
+	case *mocks.Driver:
+		{
+			typedDriver = driver
+			defer driver.AssertExpectations(c)
+		}
+	default:
+		{
+			// we never assert expectations
+			typedDriver = startDriver()
+		}
+	}
+
+	typedDriver.AssertExpectations(c)
 	httpHandler := api.HTTPHandler("", driver)
 	testServer := httptest.NewServer(httpHandler)
 	defer testServer.Close()
 
+	typedDriver.On("GetObjectMetadata", "bucket", "object", "").Return(drivers.ObjectMetadata{}, drivers.ObjectNotFound{}).Once()
 	response, err := http.Get(testServer.URL + "/bucket/object")
 	c.Assert(err, IsNil)
 	c.Assert(response.StatusCode, Equals, http.StatusNotFound)
 
 	buffer := bytes.NewBufferString("hello world")
+	typedDriver.On("CreateBucket", "bucket").Return(nil).Once()
 	driver.CreateBucket("bucket")
+	typedDriver.On("CreateObject", "bucket", "object", "", "", mock.Anything).Return(nil).Once()
 	driver.CreateObject("bucket", "object", "", "", buffer)
 
+	objectMetadata := drivers.ObjectMetadata{
+		Bucket:      "bucket",
+		Key:         "object",
+		ContentType: "application/octet-stream",
+		Created:     time.Now(),
+		// TODO correct md5
+		Md5:  "5eb63bbbe01eeed093cb22bb8f5acdc3",
+		Size: 11,
+	}
+
+	typedDriver.On("GetObjectMetadata", "bucket", "object", "").Return(objectMetadata, nil).Once()
+	typedDriver.SetGetObjectWriter("", "", []byte("hello world"))
+	typedDriver.On("GetObject", mock.Anything, "bucket", "object").Return(int64(0), nil).Once()
 	response, err = http.Get(testServer.URL + "/bucket/object")
 	c.Assert(err, IsNil)
 	c.Assert(response.StatusCode, Equals, http.StatusOK)
 
+	typedDriver.On("GetObjectMetadata", "bucket", "object", "").Return(objectMetadata, nil).Once()
 	metadata, err := driver.GetObjectMetadata("bucket", "object", "")
 	c.Assert(err, IsNil)
 	verifyHeaders(c, response.Header, metadata.Created, len("hello world"), "application/octet-stream", metadata.Md5)
 }
 
 func (s *MySuite) TestPutBucket(c *C) {
-	_, _, driver := memory.Start()
+	driver := s.Driver()
+	var typedDriver *mocks.Driver
+	switch driver := driver.(type) {
+	case *mocks.Driver:
+		{
+			typedDriver = driver
+			defer driver.AssertExpectations(c)
+		}
+	default:
+		{
+			// we never assert expectations
+			typedDriver = startDriver()
+		}
+	}
+
 	httpHandler := api.HTTPHandler("", driver)
 	testServer := httptest.NewServer(httpHandler)
 	defer testServer.Close()
 
+	typedDriver.On("ListBuckets").Return(make([]drivers.BucketMetadata, 0), nil).Once()
 	buckets, err := driver.ListBuckets()
 	c.Assert(len(buckets), Equals, 0)
 	c.Assert(err, IsNil)
 
+	typedDriver.On("CreateBucket", "bucket").Return(nil).Once()
 	request, err := http.NewRequest("PUT", testServer.URL+"/bucket", bytes.NewBufferString(""))
 	c.Assert(err, IsNil)
 
@@ -234,6 +409,7 @@ func (s *MySuite) TestPutBucket(c *C) {
 	c.Assert(response.StatusCode, Equals, http.StatusOK)
 
 	// check bucket exists
+	typedDriver.On("ListBuckets").Return([]drivers.BucketMetadata{{Name: "bucket"}}, nil).Once()
 	buckets, err = driver.ListBuckets()
 	c.Assert(len(buckets), Equals, 1)
 	c.Assert(err, IsNil)
@@ -241,7 +417,20 @@ func (s *MySuite) TestPutBucket(c *C) {
 }
 
 func (s *MySuite) TestPutObject(c *C) {
-	_, _, driver := memory.Start()
+	driver := s.Driver()
+	var typedDriver *mocks.Driver
+	switch driver := driver.(type) {
+	case *mocks.Driver:
+		{
+			typedDriver = driver
+			defer driver.AssertExpectations(c)
+		}
+	default:
+		{
+			// we never assert expectations
+			typedDriver = startDriver()
+		}
+	}
 	httpHandler := api.HTTPHandler("", driver)
 	testServer := httptest.NewServer(httpHandler)
 	defer testServer.Close()
@@ -250,6 +439,8 @@ func (s *MySuite) TestPutObject(c *C) {
 
 	resources.Maxkeys = 1000
 	resources.Prefix = ""
+
+	typedDriver.On("ListObjects", "bucket", mock.Anything).Return([]drivers.ObjectMetadata{}, drivers.BucketResourcesMetadata{}, drivers.BucketNotFound{}).Once()
 	objects, resources, err := driver.ListObjects("bucket", resources)
 	c.Assert(len(objects), Equals, 0)
 	c.Assert(resources.IsTruncated, Equals, false)
@@ -258,6 +449,7 @@ func (s *MySuite) TestPutObject(c *C) {
 	date1 := time.Now()
 
 	// Put Bucket before - Put Object into a bucket
+	typedDriver.On("CreateBucket", "bucket").Return(nil).Once()
 	request, err := http.NewRequest("PUT", testServer.URL+"/bucket", bytes.NewBufferString(""))
 	c.Assert(err, IsNil)
 
@@ -266,18 +458,30 @@ func (s *MySuite) TestPutObject(c *C) {
 	c.Assert(err, IsNil)
 	c.Assert(response.StatusCode, Equals, http.StatusOK)
 
+	typedDriver.On("CreateObject", "bucket", "two", "", "", mock.Anything).Return(nil).Once()
 	request, err = http.NewRequest("PUT", testServer.URL+"/bucket/two", bytes.NewBufferString("hello world"))
+	println(err)
 	c.Assert(err, IsNil)
 
 	response, err = client.Do(request)
 	c.Assert(err, IsNil)
 	c.Assert(response.StatusCode, Equals, http.StatusOK)
 
+	twoMetadata := drivers.ObjectMetadata{
+		Bucket:      "bucket",
+		Key:         "two",
+		ContentType: "application/octet-stream",
+		Created:     time.Now(),
+		Md5:         "5eb63bbbe01eeed093cb22bb8f5acdc3",
+		Size:        11,
+	}
+
 	date2 := time.Now()
 
 	resources.Maxkeys = 1000
 	resources.Prefix = ""
 
+	typedDriver.On("ListObjects", "bucket", mock.Anything).Return([]drivers.ObjectMetadata{{}}, drivers.BucketResourcesMetadata{}, nil).Once()
 	objects, resources, err = driver.ListObjects("bucket", resources)
 	c.Assert(len(objects), Equals, 1)
 	c.Assert(resources.IsTruncated, Equals, false)
@@ -285,6 +489,9 @@ func (s *MySuite) TestPutObject(c *C) {
 
 	var writer bytes.Buffer
 
+	typedDriver.On("GetObjectMetadata", "bucket", "two", "").Return(twoMetadata, nil).Once()
+	typedDriver.SetGetObjectWriter("bucket", "two", []byte("hello world"))
+	typedDriver.On("GetObject", mock.Anything, "bucket", "two").Return(int64(11), nil).Once()
 	driver.GetObject(&writer, "bucket", "two")
 
 	c.Assert(bytes.Equal(writer.Bytes(), []byte("hello world")), Equals, true)
@@ -298,11 +505,25 @@ func (s *MySuite) TestPutObject(c *C) {
 }
 
 func (s *MySuite) TestListBuckets(c *C) {
-	_, _, driver := memory.Start()
+	driver := s.Driver()
+	var typedDriver *mocks.Driver
+	switch driver := driver.(type) {
+	case *mocks.Driver:
+		{
+			typedDriver = driver
+			defer driver.AssertExpectations(c)
+		}
+	default:
+		{
+			// we never assert expectations
+			typedDriver = startDriver()
+		}
+	}
 	httpHandler := api.HTTPHandler("", driver)
 	testServer := httptest.NewServer(httpHandler)
 	defer testServer.Close()
 
+	typedDriver.On("ListBuckets").Return([]drivers.BucketMetadata{}, nil).Once()
 	response, err := http.Get(testServer.URL + "/")
 	defer response.Body.Close()
 	c.Assert(err, IsNil)
@@ -312,8 +533,13 @@ func (s *MySuite) TestListBuckets(c *C) {
 	c.Assert(err, IsNil)
 	c.Assert(len(listResponse.Buckets.Bucket), Equals, 0)
 
+	typedDriver.On("CreateBucket", "foo").Return(nil).Once()
 	driver.CreateBucket("foo")
 
+	bucketMetadata := []drivers.BucketMetadata{
+		{Name: "foo", Created: time.Now()},
+	}
+	typedDriver.On("ListBuckets").Return(bucketMetadata, nil).Once()
 	response, err = http.Get(testServer.URL + "/")
 	defer response.Body.Close()
 	c.Assert(err, IsNil)
@@ -324,8 +550,15 @@ func (s *MySuite) TestListBuckets(c *C) {
 	c.Assert(len(listResponse.Buckets.Bucket), Equals, 1)
 	c.Assert(listResponse.Buckets.Bucket[0].Name, Equals, "foo")
 
+	typedDriver.On("CreateBucket", "bar").Return(nil).Once()
 	driver.CreateBucket("bar")
 
+	bucketMetadata = []drivers.BucketMetadata{
+		{Name: "bar", Created: time.Now()},
+		bucketMetadata[0],
+	}
+
+	typedDriver.On("ListBuckets").Return(bucketMetadata, nil).Once()
 	response, err = http.Get(testServer.URL + "/")
 	defer response.Body.Close()
 	c.Assert(err, IsNil)
@@ -377,14 +610,29 @@ func verifyHeaders(c *C, header http.Header, date time.Time, size int, contentTy
 }
 
 func (s *MySuite) TestXMLNameNotInBucketListJson(c *C) {
-	_, _, driver := memory.Start()
+	driver := s.Driver()
+	var typedDriver *mocks.Driver
+	switch driver := driver.(type) {
+	case *mocks.Driver:
+		{
+			typedDriver = driver
+			defer driver.AssertExpectations(c)
+		}
+	default:
+		{
+			// we never assert expectations
+			typedDriver = startDriver()
+		}
+	}
 	httpHandler := api.HTTPHandler("", driver)
 	testServer := httptest.NewServer(httpHandler)
 	defer testServer.Close()
 
+	typedDriver.On("CreateBucket", "foo").Return(nil).Once()
 	err := driver.CreateBucket("foo")
 	c.Assert(err, IsNil)
 
+	typedDriver.On("ListBuckets").Return([]drivers.BucketMetadata{{Name: "foo", Created: time.Now()}}, nil)
 	request, err := http.NewRequest("GET", testServer.URL+"/", bytes.NewBufferString(""))
 	c.Assert(err, IsNil)
 
@@ -402,14 +650,29 @@ func (s *MySuite) TestXMLNameNotInBucketListJson(c *C) {
 }
 
 func (s *MySuite) TestXMLNameNotInObjectListJson(c *C) {
-	_, _, driver := memory.Start()
+	driver := s.Driver()
+	var typedDriver *mocks.Driver
+	switch driver := driver.(type) {
+	case *mocks.Driver:
+		{
+			typedDriver = driver
+			defer driver.AssertExpectations(c)
+		}
+	default:
+		{
+			//				 we never assert expectations
+			typedDriver = startDriver()
+		}
+	}
 	httpHandler := api.HTTPHandler("", driver)
 	testServer := httptest.NewServer(httpHandler)
 	defer testServer.Close()
 
+	typedDriver.On("CreateBucket", "foo").Return(nil).Once()
 	err := driver.CreateBucket("foo")
 	c.Assert(err, IsNil)
 
+	typedDriver.On("ListObjects", "foo", mock.Anything).Return([]drivers.ObjectMetadata{}, drivers.BucketResourcesMetadata{}, nil).Once()
 	request, err := http.NewRequest("GET", testServer.URL+"/foo", bytes.NewBufferString(""))
 	c.Assert(err, IsNil)
 
@@ -427,15 +690,30 @@ func (s *MySuite) TestXMLNameNotInObjectListJson(c *C) {
 }
 
 func (s *MySuite) TestContentTypePersists(c *C) {
-	_, _, driver := memory.Start()
+	driver := s.Driver()
+	var typedDriver *mocks.Driver
+	switch driver := driver.(type) {
+	case *mocks.Driver:
+		{
+			typedDriver = driver
+			defer driver.AssertExpectations(c)
+		}
+	default:
+		{
+			//				 we never assert expectations
+			typedDriver = startDriver()
+		}
+	}
 	httpHandler := api.HTTPHandler("", driver)
 	testServer := httptest.NewServer(httpHandler)
 	defer testServer.Close()
 
+	typedDriver.On("CreateBucket", "bucket").Return(nil).Once()
 	err := driver.CreateBucket("bucket")
 	c.Assert(err, IsNil)
 
 	client := http.Client{}
+	typedDriver.On("CreateObject", "bucket", "one", "", "", mock.Anything).Return(nil).Once()
 	request, err := http.NewRequest("PUT", testServer.URL+"/bucket/one", bytes.NewBufferString("hello world"))
 	delete(request.Header, "Content-Type")
 	c.Assert(err, IsNil)
@@ -444,6 +722,15 @@ func (s *MySuite) TestContentTypePersists(c *C) {
 	c.Assert(response.StatusCode, Equals, http.StatusOK)
 
 	// test head
+	oneMetadata := drivers.ObjectMetadata{
+		Bucket:      "bucket",
+		Key:         "one",
+		ContentType: "application/octet-stream",
+		Created:     time.Now(),
+		Md5:         "d41d8cd98f00b204e9800998ecf8427e",
+		Size:        0,
+	}
+	typedDriver.On("GetObjectMetadata", "bucket", "one", "").Return(oneMetadata, nil).Once()
 	request, err = http.NewRequest("HEAD", testServer.URL+"/bucket/one", bytes.NewBufferString(""))
 	c.Assert(err, IsNil)
 	response, err = client.Do(request)
@@ -451,9 +738,13 @@ func (s *MySuite) TestContentTypePersists(c *C) {
 	c.Assert(response.Header.Get("Content-Type"), Equals, "application/octet-stream")
 
 	// test get object
+	typedDriver.SetGetObjectWriter("bucket", "once", []byte(""))
+	typedDriver.On("GetObjectMetadata", "bucket", "one", "").Return(oneMetadata, nil).Once()
+	typedDriver.On("GetObject", mock.Anything, "bucket", "one").Return(int64(0), nil).Once()
 	response, err = http.Get(testServer.URL + "/bucket/one")
 	c.Assert(response.Header.Get("Content-Type"), Equals, "application/octet-stream")
 
+	typedDriver.On("CreateObject", "bucket", "two", "", "", mock.Anything).Return(nil).Once()
 	request, err = http.NewRequest("PUT", testServer.URL+"/bucket/two", bytes.NewBufferString("hello world"))
 	delete(request.Header, "Content-Type")
 	request.Header.Add("Content-Type", "application/json")
@@ -462,6 +753,16 @@ func (s *MySuite) TestContentTypePersists(c *C) {
 	c.Assert(err, IsNil)
 	c.Assert(response.StatusCode, Equals, http.StatusOK)
 
+	twoMetadata := drivers.ObjectMetadata{
+		Bucket:      "bucket",
+		Key:         "one",
+		ContentType: "application/octet-stream",
+		Created:     time.Now(),
+		// Fix MD5
+		Md5:  "d41d8cd98f00b204e9800998ecf8427e",
+		Size: 0,
+	}
+	typedDriver.On("GetObjectMetadata", "bucket", "two", "").Return(twoMetadata, nil).Once()
 	request, err = http.NewRequest("HEAD", testServer.URL+"/bucket/two", bytes.NewBufferString(""))
 	c.Assert(err, IsNil)
 	response, err = client.Do(request)
@@ -469,6 +770,14 @@ func (s *MySuite) TestContentTypePersists(c *C) {
 	c.Assert(response.Header.Get("Content-Type"), Equals, "application/octet-stream")
 
 	// test get object
+	typedDriver.On("GetObjectMetadata", "bucket", "two", "").Return(twoMetadata, nil).Once()
+	typedDriver.On("GetObject", mock.Anything, "bucket", "two").Return(int64(0), nil).Once()
 	response, err = http.Get(testServer.URL + "/bucket/two")
 	c.Assert(response.Header.Get("Content-Type"), Equals, "application/octet-stream")
 }
+
+func startDriver() *mocks.Driver {
+	return &mocks.Driver{
+		ObjectWriterData: make(map[string][]byte),
+	}
+}

pkg/drivers/mocks/Driver.go

@@ -0,0 +1,115 @@
+package mocks
+
+import "github.com/minio-io/minio/pkg/drivers"
+import "github.com/stretchr/testify/mock"
+
+import (
+	"bytes"
+	"io"
+)
+
+// Driver is a mock
+type Driver struct {
+	mock.Mock
+
+	ObjectWriterData map[string][]byte
+}
+
+// ListBuckets is a mock
+func (m *Driver) ListBuckets() ([]drivers.BucketMetadata, error) {
+	ret := m.Called()
+
+	r0 := ret.Get(0).([]drivers.BucketMetadata)
+	r1 := ret.Error(1)
+
+	return r0, r1
+}
+
+// CreateBucket is a mock
+func (m *Driver) CreateBucket(bucket string) error {
+	ret := m.Called(bucket)
+
+	r0 := ret.Error(0)
+
+	return r0
+}
+
+// CreateBucketPolicy is a mock
+func (m *Driver) CreateBucketPolicy(bucket string, p drivers.BucketPolicy) error {
+	ret := m.Called(bucket, p)
+
+	r0 := ret.Error(0)
+
+	return r0
+}
+
+// GetBucketPolicy is a mock
+func (m *Driver) GetBucketPolicy(bucket string) (drivers.BucketPolicy, error) {
+	ret := m.Called(bucket)
+
+	r0 := ret.Get(0).(drivers.BucketPolicy)
+	r1 := ret.Error(1)
+
+	return r0, r1
+}
+
+// SetGetObjectWriter is a mock
+func (m *Driver) SetGetObjectWriter(bucket, object string, data []byte) {
+	m.ObjectWriterData[bucket+":"+object] = data
+	println(string(m.ObjectWriterData["bucket:object"]))
+}
+
+// GetObject is a mock
+func (m *Driver) GetObject(w io.Writer, bucket string, object string) (int64, error) {
+	ret := m.Called(w, bucket, object)
+	r0 := ret.Get(0).(int64)
+	r1 := ret.Error(1)
+	if r1 == nil {
+		if obj, ok := m.ObjectWriterData[bucket+":"+object]; ok {
+			n, _ := io.Copy(w, bytes.NewBuffer(obj))
+			r0 = n
+		}
+	}
+
+	return r0, r1
+}
+
+// GetPartialObject is a mock
+func (m *Driver) GetPartialObject(w io.Writer, bucket string, object string, start int64, length int64) (int64, error) {
+	ret := m.Called(w, bucket, object, start, length)
+
+	r0 := ret.Get(0).(int64)
+	r1 := ret.Error(1)
+
+	return r0, r1
+}
+
+// GetObjectMetadata is a mock
+func (m *Driver) GetObjectMetadata(bucket string, object string, prefix string) (drivers.ObjectMetadata, error) {
+	ret := m.Called(bucket, object, prefix)
+
+	r0 := ret.Get(0).(drivers.ObjectMetadata)
+	r1 := ret.Error(1)
+
+	return r0, r1
+}
+
+// ListObjects is a mock
+func (m *Driver) ListObjects(bucket string, resources drivers.BucketResourcesMetadata) ([]drivers.ObjectMetadata, drivers.BucketResourcesMetadata, error) {
+	ret := m.Called(bucket, resources)
+
+	r0 := ret.Get(0).([]drivers.ObjectMetadata)
+	r1 := ret.Get(1).(drivers.BucketResourcesMetadata)
+	r2 := ret.Error(2)
+
+	return r0, r1, r2
+}
+
+// CreateObject is a mock
+func (m *Driver) CreateObject(bucket string, key string, contentType string, md5sum string, data io.Reader) error {
+	ret := m.Called(bucket, key, contentType, md5sum, data)
+
+	r0 := ret.Error(0)
+
+	return r0
+}