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Copy pathioutil_test.go
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103 lines (93 loc) · 2.44 KB
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/*
* 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 (
"bytes"
"io"
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))
}
}
func TestSkipReader(t *testing.T) {
testCases := []struct {
src io.Reader
skipLen int64
expected string
}{
{bytes.NewBuffer([]byte("")), 0, ""},
{bytes.NewBuffer([]byte("")), 1, ""},
{bytes.NewBuffer([]byte("abc")), 0, "abc"},
{bytes.NewBuffer([]byte("abc")), 1, "bc"},
{bytes.NewBuffer([]byte("abc")), 2, "c"},
{bytes.NewBuffer([]byte("abc")), 3, ""},
{bytes.NewBuffer([]byte("abc")), 4, ""},
}
for i, testCase := range testCases {
r := NewSkipReader(testCase.src, testCase.skipLen)
b, err := goioutil.ReadAll(r)
if err != nil {
t.Errorf("Case %d: Unexpected err %v", i, err)
}
if string(b) != testCase.expected {
t.Errorf("Case %d: Got wrong result: %v", i, string(b))
}
}
}