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package ioutils
import (
"bytes"
"strings"
"testing"
)
func TestWriteCloserWrapperClose(t *testing.T) {
called := false
writer := bytes.NewBuffer([]byte{})
wrapper := NewWriteCloserWrapper(writer, func() error {
called = true
return nil
})
if err := wrapper.Close(); err != nil {
t.Fatal(err)
}
if !called {
t.Fatalf("writeCloserWrapper should have call the anonymous function.")
}
}
func TestNopWriteCloser(t *testing.T) {
writer := bytes.NewBuffer([]byte{})
wrapper := NopWriteCloser(writer)
if err := wrapper.Close(); err != nil {
t.Fatal("NopWriteCloser always return nil on Close.")
}
}
func TestNopWriter(t *testing.T) {
nw := &NopWriter{}
l, err := nw.Write([]byte{'c'})
if err != nil {
t.Fatal(err)
}
if l != 1 {
t.Fatalf("Expected 1 got %d", l)
}
}
func TestWriteCounter(t *testing.T) {
dummy1 := "This is a dummy string."
dummy2 := "This is another dummy string."
totalLength := int64(len(dummy1) + len(dummy2))
reader1 := strings.NewReader(dummy1)
reader2 := strings.NewReader(dummy2)
var buffer bytes.Buffer
wc := NewWriteCounter(&buffer)
reader1.WriteTo(wc)
reader2.WriteTo(wc)
if wc.Count != totalLength {
t.Errorf("Wrong count: %d vs. %d", wc.Count, totalLength)
}
if buffer.String() != dummy1+dummy2 {
t.Error("Wrong message written")
}
}
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