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141 lines
3.1 KiB
141 lines
3.1 KiB
// Copyright 2016 CoreOS Inc
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package progressutil
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import (
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"bytes"
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"fmt"
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"io"
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"testing"
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"time"
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)
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type fakeReader struct {
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input chan []byte
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done bool
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}
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func (fr *fakeReader) Read(p []byte) (int, error) {
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if fr.done {
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return 0, io.EOF
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}
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i := copy(p, <-fr.input)
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return i, nil
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}
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func TestCopyOne(t *testing.T) {
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cpp := NewCopyProgressPrinter()
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cpp.pbp.printToTTYAlways = true
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sampleData := []byte("this is a test!")
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fr := &fakeReader{make(chan []byte, 1), false}
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fw := &bytes.Buffer{}
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out := &bytes.Buffer{}
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err := cpp.AddCopy(fr, "download", int64(len(sampleData)*10), fw)
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if err != nil {
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t.Errorf("%v\n", err)
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}
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doneChan := make(chan error)
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go func() {
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doneChan <- cpp.PrintAndWait(out, time.Millisecond*10, nil)
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}()
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time.Sleep(time.Millisecond * 15)
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for i := 0; i < 10; i++ {
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// Empty the buffer
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printedData := out.Bytes()
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sizeString := ByteUnitStr(int64(len(sampleData)*i)) + " / " + ByteUnitStr(int64(len(sampleData)*10))
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bar := renderExpectedBar(80, "download", float64(i)/10, sizeString)
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var expectedOutput string
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if i == 0 {
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expectedOutput = fmt.Sprintf("%s\n", bar)
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} else {
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expectedOutput = fmt.Sprintf("\033[1A%s\n", bar)
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}
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if string(printedData) != expectedOutput {
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t.Errorf("unexpected output:\nexpected:\n\n%sactual:\n\n%s", expectedOutput, string(printedData))
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}
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if i == 9 {
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fr.done = true
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}
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fr.input <- sampleData
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out.Reset()
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time.Sleep(time.Millisecond * 10)
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}
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err = <-doneChan
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if err != nil {
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t.Errorf("error from PrintAndWait: %v", err)
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}
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if bytes.Compare(fw.Bytes(), bytes.Repeat(sampleData, 10)) != 0 {
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t.Errorf("copied bytes don't match!")
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}
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}
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func TestErrAlreadyStarted(t *testing.T) {
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cpp := NewCopyProgressPrinter()
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fr := &fakeReader{make(chan []byte, 1), false}
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fw := &bytes.Buffer{}
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out := &bytes.Buffer{}
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err := cpp.AddCopy(fr, "download", 10^10, fw)
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if err != nil {
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t.Errorf("%v\n", err)
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}
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cancel := make(chan struct{})
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doneChan := make(chan error)
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go func() {
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doneChan <- cpp.PrintAndWait(out, time.Second, cancel)
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}()
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for {
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cpp.lock.Lock()
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started := cpp.started
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cpp.lock.Unlock()
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if !started {
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time.Sleep(time.Millisecond * 5)
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} else {
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break
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}
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}
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err = cpp.AddCopy(fr, "download", 10^10, fw)
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if err != ErrAlreadyStarted {
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t.Errorf("Was expecting ErrAlreadyStarted, got something else: %v\n", err)
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}
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err = cpp.PrintAndWait(out, time.Second, cancel)
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if err != ErrAlreadyStarted {
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t.Errorf("Was expecting ErrAlreadyStarted, got something else: %v\n", err)
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}
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cancel <- struct{}{}
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err = <-doneChan
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if err != nil {
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t.Errorf("%v\n", err)
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}
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}
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