109 lines
2.4 KiB
Go
109 lines
2.4 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package ioutil
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import (
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"io/ioutil"
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"os"
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"sort"
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"strconv"
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"strings"
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"sync"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestWriteCloseInformer(t *testing.T) {
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original := &writeCloser{}
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wci, close := NewWriteCloseInformer(original)
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data := "test"
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n, err := wci.Write([]byte(data))
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assert.Equal(t, len(data), n)
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assert.Equal(t, data, original.buf.String())
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assert.NoError(t, err)
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select {
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case <-close:
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assert.Fail(t, "write closer closed")
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default:
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}
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wci.Close()
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assert.True(t, original.closed)
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select {
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case <-close:
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default:
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assert.Fail(t, "write closer not closed")
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}
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}
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func TestSerialWriteCloser(t *testing.T) {
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const (
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// Test 10 times to make sure it always pass.
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testCount = 10
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goroutine = 10
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dataLen = 100000
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)
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for n := 0; n < testCount; n++ {
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testData := make([][]byte, goroutine)
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for i := 0; i < goroutine; i++ {
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testData[i] = []byte(repeatNumber(i, dataLen) + "\n")
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}
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f, err := ioutil.TempFile("", "serial-write-closer")
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require.NoError(t, err)
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defer os.RemoveAll(f.Name())
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defer f.Close()
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wc := NewSerialWriteCloser(f)
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defer wc.Close()
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// Write data in parallel
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var wg sync.WaitGroup
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wg.Add(goroutine)
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for i := 0; i < goroutine; i++ {
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go func(id int) {
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n, err := wc.Write(testData[id])
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assert.NoError(t, err)
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assert.Equal(t, dataLen+1, n)
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wg.Done()
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}(i)
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}
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wg.Wait()
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wc.Close()
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// Check test result
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content, err := ioutil.ReadFile(f.Name())
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require.NoError(t, err)
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resultData := strings.Split(strings.TrimSpace(string(content)), "\n")
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require.Len(t, resultData, goroutine)
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sort.Strings(resultData)
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for i := 0; i < goroutine; i++ {
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expected := repeatNumber(i, dataLen)
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assert.Equal(t, expected, resultData[i])
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}
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}
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}
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func repeatNumber(num, count int) string {
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return strings.Repeat(strconv.Itoa(num), count)
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}
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