94 lines
2.0 KiB
Go
94 lines
2.0 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information
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package sync2_test
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import (
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"errors"
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"io"
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"io/ioutil"
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"testing"
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"github.com/stretchr/testify/assert"
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"golang.org/x/sync/errgroup"
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"storj.io/storj/internal/sync2"
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)
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func TestTee_Basic(t *testing.T) {
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testTees(t, func(t *testing.T, readers []sync2.PipeReader, writer sync2.PipeWriter) {
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var group errgroup.Group
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group.Go(func() error {
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n, err := writer.Write([]byte{1, 2, 3})
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assert.Equal(t, n, 3)
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assert.NoError(t, err)
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n, err = writer.Write([]byte{1, 2, 3})
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assert.Equal(t, n, 3)
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assert.NoError(t, err)
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assert.NoError(t, writer.Close())
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return nil
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})
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for i := 0; i < len(readers); i++ {
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i := i
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group.Go(func() error {
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data, err := ioutil.ReadAll(readers[i])
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assert.Equal(t, []byte{1, 2, 3, 1, 2, 3}, data)
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if err != nil {
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assert.Equal(t, io.EOF, err)
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}
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assert.NoError(t, readers[i].Close())
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return nil
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})
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}
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assert.NoError(t, group.Wait())
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})
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}
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func TestTee_CloseWithError(t *testing.T) {
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testTees(t, func(t *testing.T, readers []sync2.PipeReader, writer sync2.PipeWriter) {
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var failure = errors.New("write failure")
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var group errgroup.Group
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group.Go(func() error {
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n, err := writer.Write([]byte{1, 2, 3})
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assert.Equal(t, n, 3)
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assert.NoError(t, err)
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err = writer.CloseWithError(failure)
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assert.NoError(t, err)
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return nil
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})
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for i := 0; i < len(readers); i++ {
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i := i
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group.Go(func() error {
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_, err := ioutil.ReadAll(readers[i])
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if err != nil {
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assert.Equal(t, failure, err)
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}
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assert.NoError(t, readers[i].Close())
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return nil
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})
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}
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assert.NoError(t, group.Wait())
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})
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}
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func testTees(t *testing.T, test func(t *testing.T, readers []sync2.PipeReader, writer sync2.PipeWriter)) {
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t.Parallel()
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t.Run("File", func(t *testing.T) {
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t.Parallel()
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readers, writer, err := sync2.NewTeeFile(2, "")
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if err != nil {
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t.Fatal(err)
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}
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test(t, readers, writer)
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})
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}
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