/*

* Minio Cloud Storage, (C) 2017 Minio, 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 ioutil

import (

goioutil "io/ioutil"

"os"

"testing"

)

func TestCloseOnWriter(t *testing.T) {

writer := WriteOnClose(goioutil.Discard)

if writer.HasWritten() {

t.Error("WriteOnCloser must not be marked as HasWritten")

}

writer.Write(nil)

if !writer.HasWritten() {

t.Error("WriteOnCloser must be marked as HasWritten")

}

writer = WriteOnClose(goioutil.Discard)

writer.Close()

if !writer.HasWritten() {

t.Error("WriteOnCloser must be marked as HasWritten")

}

}

// Test for AppendFile.

func TestAppendFile(t *testing.T) {

f, err := goioutil.TempFile("", "")

if err != nil {

t.Fatal(err)

}

name1 := f.Name()

defer os.Remove(name1)

f.WriteString("aaaaaaaaaa")

f.Close()

f, err = goioutil.TempFile("", "")

if err != nil {

t.Fatal(err)

}

name2 := f.Name()

defer os.Remove(name2)

f.WriteString("bbbbbbbbbb")

f.Close()

if err = AppendFile(name1, name2); err != nil {

t.Error(err)

}

b, err := goioutil.ReadFile(name1)

if err != nil {

t.Error(err)

}

expected := "aaaaaaaaaabbbbbbbbbb"

if string(b) != expected {

t.Errorf("AppendFile() failed, expected: %s, got %s", expected, string(b))

}

}