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Copy pathioutil_test.go
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206 lines (185 loc) · 5.09 KB
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// Copyright (c) 2015-2023 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package ioutil
import (
"bytes"
"context"
"errors"
"io"
"os"
"strings"
"testing"
"time"
)
type sleepWriter struct {
timeout time.Duration
}
func (w *sleepWriter) Write(p []byte) (n int, err error) {
time.Sleep(w.timeout)
return len(p), nil
}
func (w *sleepWriter) Close() error {
return nil
}
func TestDeadlineWriter(t *testing.T) {
w := NewDeadlineWriter(&sleepWriter{timeout: 500 * time.Millisecond}, 450*time.Millisecond)
_, err := w.Write([]byte("1"))
if err != context.DeadlineExceeded {
t.Error("DeadlineWriter shouldn't be successful - should return context.DeadlineExceeded")
}
_, err = w.Write([]byte("1"))
if err != context.DeadlineExceeded {
t.Error("DeadlineWriter shouldn't be successful - should return context.DeadlineExceeded")
}
w.Close()
w = NewDeadlineWriter(&sleepWriter{timeout: 100 * time.Millisecond}, 600*time.Millisecond)
n, err := w.Write([]byte("abcd"))
w.Close()
if err != nil {
t.Errorf("DeadlineWriter should succeed but failed with %s", err)
}
if n != 4 {
t.Errorf("DeadlineWriter should succeed but should have only written 4 bytes, but returned %d instead", n)
}
}
func TestCloseOnWriter(t *testing.T) {
writer := WriteOnClose(io.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(io.Discard)
writer.Close()
if !writer.HasWritten() {
t.Error("WriteOnCloser must be marked as HasWritten")
}
}
// Test for AppendFile.
func TestAppendFile(t *testing.T) {
f, err := os.CreateTemp("", "")
if err != nil {
t.Fatal(err)
}
name1 := f.Name()
defer os.Remove(name1)
f.WriteString("aaaaaaaaaa")
f.Close()
f, err = os.CreateTemp("", "")
if err != nil {
t.Fatal(err)
}
name2 := f.Name()
defer os.Remove(name2)
f.WriteString("bbbbbbbbbb")
f.Close()
if err = AppendFile(name1, name2, false); err != nil {
t.Error(err)
}
b, err := os.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 := io.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))
}
}
}
func TestSameFile(t *testing.T) {
f, err := os.CreateTemp("", "")
if err != nil {
t.Errorf("Error creating tmp file: %v", err)
}
tmpFile := f.Name()
f.Close()
defer os.Remove(f.Name())
fi1, err := os.Stat(tmpFile)
if err != nil {
t.Fatalf("Error Stat(): %v", err)
}
fi2, err := os.Stat(tmpFile)
if err != nil {
t.Fatalf("Error Stat(): %v", err)
}
if !SameFile(fi1, fi2) {
t.Fatal("Expected the files to be same")
}
if err = os.WriteFile(tmpFile, []byte("aaa"), 0o644); err != nil {
t.Fatal(err)
}
fi2, err = os.Stat(tmpFile)
if err != nil {
t.Fatalf("Error Stat(): %v", err)
}
if SameFile(fi1, fi2) {
t.Fatal("Expected the files not to be same")
}
}
func TestCopyAligned(t *testing.T) {
f, err := os.CreateTemp("", "")
if err != nil {
t.Errorf("Error creating tmp file: %v", err)
}
defer f.Close()
defer os.Remove(f.Name())
r := strings.NewReader("hello world")
bufp := ODirectPoolSmall.Get().(*[]byte)
defer ODirectPoolSmall.Put(bufp)
written, err := CopyAligned(f, io.LimitReader(r, 5), *bufp, r.Size(), f)
if !errors.Is(err, io.ErrUnexpectedEOF) {
t.Errorf("Expected io.ErrUnexpectedEOF, but got %v", err)
}
if written != 5 {
t.Errorf("Expected written to be '5', but got %v", written)
}
f.Seek(0, io.SeekStart)
r.Seek(0, io.SeekStart)
written, err = CopyAligned(f, r, *bufp, r.Size(), f)
if !errors.Is(err, nil) {
t.Errorf("Expected nil, but got %v", err)
}
if written != r.Size() {
t.Errorf("Expected written to be '%v', but got %v", r.Size(), written)
}
}