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proxyreader_test.go
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proxyreader_test.go
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package mpb_test
import (
"io"
"io/ioutil"
"strings"
"testing"
"github.com/mikewiacek/mpb"
)
const content = `Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do
eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim
veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea
commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit
esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat
cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id
est laborum.`
type testReader struct {
io.Reader
called bool
}
func (r *testReader) Read(p []byte) (n int, err error) {
r.called = true
return r.Reader.Read(p)
}
func TestProxyReader(t *testing.T) {
p := mpb.New(mpb.WithOutput(ioutil.Discard))
reader := &testReader{Reader: strings.NewReader(content)}
total := len(content)
bar := p.AddBar(100, mpb.TrimSpace())
written, err := io.Copy(ioutil.Discard, bar.ProxyReader(reader))
if err != nil {
t.Errorf("Error copying from reader: %+v\n", err)
}
p.Wait()
if !reader.called {
t.Error("Read not called")
}
if written != int64(total) {
t.Errorf("Expected written: %d, got: %d\n", total, written)
}
}