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