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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/ioutil"
"strings"
"testing"
)
func TestNoBarsAdded(t *testing.T) {
pbp := &ProgressBarPrinter{}
allDone, err := pbp.Print(ioutil.Discard)
if allDone {
t.Errorf("shouldn't have gotten all done when no bars have been added")
}
if err != ErrorNoBarsAdded {
t.Errorf("was expecting ErrorNoBarsAdded, got this instead: %v", err)
}
}
func TestProgressOutOfBounds(t *testing.T) {
pbp := &ProgressBarPrinter{}
pb := pbp.AddProgressBar()
for _, testcase := range []struct {
progress float64
expectedErr error
}{
{-0.1, ErrorProgressOutOfBounds},
{0, nil},
{0.5, nil},
{1, nil},
{1.1, ErrorProgressOutOfBounds},
} {
err := pb.SetCurrentProgress(testcase.progress)
if err != testcase.expectedErr {
t.Errorf("got unexpected error. expected=%v actual=%v", testcase.expectedErr, err)
}
if err == nil {
currProgress := pb.GetCurrentProgress()
if currProgress != testcase.progress {
t.Errorf("no error was returned, but the progress wasn't updated. should be: %f, actual: %f", testcase.progress, currProgress)
}
}
}
}
func TestDrawOne(t *testing.T) {
pbp := ProgressBarPrinter{}
pbp.printToTTYAlways = true
pb := pbp.AddProgressBar()
pbp.Print(ioutil.Discard)
for _, testcase := range []struct {
beforeText string
progress float64
afterText string
shouldBeDone bool
}{
{"before", 0, "after", false},
{"before2", 0.1, "after2", false},
{"before3", 0.5, "after3", false},
{"before4", 1, "after4", true},
} {
buf := &bytes.Buffer{}
pb.SetPrintBefore(testcase.beforeText)
pb.SetPrintAfter(testcase.afterText)
err := pb.SetCurrentProgress(testcase.progress)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
done, err := pbp.Print(buf)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if done != testcase.shouldBeDone {
t.Errorf("unexpected done, expected=%t actual=%t", testcase.shouldBeDone, done)
}
output := buf.String()
bar := renderExpectedBar(80, testcase.beforeText, testcase.progress, testcase.afterText)
expectedOutput := fmt.Sprintf("\033[1A%s\n", bar)
if output != expectedOutput {
t.Errorf("unexpected output:\nexpected:\n\n%sactual:\n\n%s", expectedOutput, output)
}
}
}
func renderExpectedBar(numColumns int, before string, progress float64, after string) string {
progressBarSize := numColumns - len(fmt.Sprintf("%s [] %s", before, after))
currentProgress := int(progress * float64(progressBarSize))
bar := fmt.Sprintf("[%s%s]",
strings.Repeat("=", currentProgress),
strings.Repeat(" ", progressBarSize-currentProgress))
return fmt.Sprintf("%s %s %s", before, bar, after)
}
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