woodpecker/pipeline/log/utils_test.go

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// Copyright 2024 Woodpecker Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package log_test
import (
"io"
"strings"
"sync"
"testing"
"time"
"github.com/stretchr/testify/assert"
"go.woodpecker-ci.org/woodpecker/v2/pipeline/log"
)
type testWriter struct {
*sync.Mutex
writes []string
}
func (b *testWriter) Write(p []byte) (n int, err error) {
b.Lock()
defer b.Unlock()
b.writes = append(b.writes, string(p))
return len(p), nil
}
func (b *testWriter) Close() error {
return nil
}
func (b *testWriter) GetWrites() []string {
b.Lock()
defer b.Unlock()
w := make([]string, len(b.writes))
copy(w, b.writes)
return w
}
func TestCopyLineByLine(t *testing.T) {
r, w := io.Pipe()
testWriter := &testWriter{
Mutex: &sync.Mutex{},
writes: make([]string, 0),
}
go func() {
err := log.CopyLineByLine(testWriter, r, 1024)
assert.NoError(t, err)
}()
// wait for the goroutine to start
time.Sleep(time.Millisecond)
// write 4 bytes without newline
if _, err := w.Write([]byte("1234")); err != nil {
t.Fatalf("unexpected error: %v", err)
}
writes := testWriter.GetWrites()
assert.Lenf(t, writes, 0, "expected 0 writes, got: %v", writes)
// write more bytes with newlines
if _, err := w.Write([]byte("5\n678\n90")); err != nil {
t.Fatalf("unexpected error: %v", err)
}
writes = testWriter.GetWrites()
assert.Lenf(t, writes, 2, "expected 2 writes, got: %v", writes)
// wait for the goroutine to write the data
time.Sleep(time.Millisecond)
writtenData := strings.Join(writes, "-")
assert.Equal(t, "12345\n-678\n", writtenData, "unexpected writtenData: %s", writtenData)
// closing the writer should flush the remaining data
w.Close()
// wait for the goroutine to finish
time.Sleep(10 * time.Millisecond)
// the written data contains all the data we wrote
writtenData = strings.Join(testWriter.GetWrites(), "-")
assert.Equal(t, "12345\n-678\n-90", writtenData, "unexpected writtenData: %s", writtenData)
}
func TestCopyLineByLineSizeLimit(t *testing.T) {
r, w := io.Pipe()
testWriter := &testWriter{
Mutex: &sync.Mutex{},
writes: make([]string, 0),
}
wg := sync.WaitGroup{}
wg.Add(1)
go func() {
defer wg.Done()
err := log.CopyLineByLine(testWriter, r, 4)
assert.NoError(t, err)
}()
// wait for the goroutine to start
time.Sleep(time.Millisecond)
// write 4 bytes without newline
if _, err := w.Write([]byte("12345")); err != nil {
t.Fatalf("unexpected error: %v", err)
}
writes := testWriter.GetWrites()
assert.Lenf(t, testWriter.GetWrites(), 0, "expected 0 writes, got: %v", writes)
// write more bytes
if _, err := w.Write([]byte("67\n89")); err != nil {
t.Fatalf("unexpected error: %v", err)
}
// wait for writer to write
time.Sleep(time.Millisecond)
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writes = testWriter.GetWrites()
assert.Lenf(t, testWriter.GetWrites(), 2, "expected 2 writes, got: %v", writes)
writes = testWriter.GetWrites()
writtenData := strings.Join(writes, "-")
assert.Equal(t, "1234-567\n", writtenData, "unexpected writtenData: %s", writtenData)
// closing the writer should flush the remaining data
w.Close()
wg.Wait()
}
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func TestStringReader(t *testing.T) {
r := io.NopCloser(strings.NewReader("123\n4567\n890"))
testWriter := &testWriter{
Mutex: &sync.Mutex{},
writes: make([]string, 0),
}
err := log.CopyLineByLine(testWriter, r, 1024)
assert.NoError(t, err)
writes := testWriter.GetWrites()
assert.Lenf(t, writes, 3, "expected 3 writes, got: %v", writes)
}