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92 lines
3.7 KiB
Go
92 lines
3.7 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package parquet
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import (
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"io"
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"os"
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"testing"
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"github.com/minio/minio-go/v7/pkg/set"
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)
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func getReader(name string, offset int64, length int64) (io.ReadCloser, error) {
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file, err := os.Open(name)
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if err != nil {
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return nil, err
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}
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fi, err := file.Stat()
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if err != nil {
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return nil, err
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}
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if offset < 0 {
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offset = fi.Size() + offset
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}
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if _, err = file.Seek(offset, io.SeekStart); err != nil {
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return nil, err
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}
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return file, nil
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}
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func TestReader(t *testing.T) {
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name := "example.parquet"
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reader, err := NewReader(
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func(offset, length int64) (io.ReadCloser, error) {
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return getReader(name, offset, length)
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},
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set.CreateStringSet("one", "two", "three"),
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)
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if err != nil {
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t.Fatal(err)
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}
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expectedRecords := []string{
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`map[one:{-1 DOUBLE SchemaElement({Type:DOUBLE TypeLength:<nil> RepetitionType:OPTIONAL Name:one NumChildren:<nil> ConvertedType:<nil> Scale:<nil> Precision:<nil> FieldID:<nil> LogicalType:<nil>})} three:{true BOOLEAN SchemaElement({Type:BOOLEAN TypeLength:<nil> RepetitionType:OPTIONAL Name:three NumChildren:<nil> ConvertedType:<nil> Scale:<nil> Precision:<nil> FieldID:<nil> LogicalType:<nil>})} two:{[102 111 111] BYTE_ARRAY SchemaElement({Type:BYTE_ARRAY TypeLength:<nil> RepetitionType:OPTIONAL Name:two NumChildren:<nil> ConvertedType:<nil> Scale:<nil> Precision:<nil> FieldID:<nil> LogicalType:<nil>})}]`,
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`map[one:{<nil> DOUBLE SchemaElement({Type:DOUBLE TypeLength:<nil> RepetitionType:OPTIONAL Name:one NumChildren:<nil> ConvertedType:<nil> Scale:<nil> Precision:<nil> FieldID:<nil> LogicalType:<nil>})} three:{false BOOLEAN SchemaElement({Type:BOOLEAN TypeLength:<nil> RepetitionType:OPTIONAL Name:three NumChildren:<nil> ConvertedType:<nil> Scale:<nil> Precision:<nil> FieldID:<nil> LogicalType:<nil>})} two:{[98 97 114] BYTE_ARRAY SchemaElement({Type:BYTE_ARRAY TypeLength:<nil> RepetitionType:OPTIONAL Name:two NumChildren:<nil> ConvertedType:<nil> Scale:<nil> Precision:<nil> FieldID:<nil> LogicalType:<nil>})}]`,
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`map[one:{2.5 DOUBLE SchemaElement({Type:DOUBLE TypeLength:<nil> RepetitionType:OPTIONAL Name:one NumChildren:<nil> ConvertedType:<nil> Scale:<nil> Precision:<nil> FieldID:<nil> LogicalType:<nil>})} three:{true BOOLEAN SchemaElement({Type:BOOLEAN TypeLength:<nil> RepetitionType:OPTIONAL Name:three NumChildren:<nil> ConvertedType:<nil> Scale:<nil> Precision:<nil> FieldID:<nil> LogicalType:<nil>})} two:{[98 97 122] BYTE_ARRAY SchemaElement({Type:BYTE_ARRAY TypeLength:<nil> RepetitionType:OPTIONAL Name:two NumChildren:<nil> ConvertedType:<nil> Scale:<nil> Precision:<nil> FieldID:<nil> LogicalType:<nil>})}]`,
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}
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i := 0
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for {
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record, err := reader.Read()
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if err != nil {
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if err != io.EOF {
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t.Error(err)
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}
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break
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}
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if i == len(expectedRecords) {
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t.Errorf("read more than expected record count %v", len(expectedRecords))
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}
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if record.String() != expectedRecords[i] {
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t.Errorf("record%v: expected: %v, got: %v", i+1, expectedRecords[i], record.String())
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}
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i++
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}
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reader.Close()
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}
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