133 lines
3.2 KiB
Go
133 lines
3.2 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package ioutil_test
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import (
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"bytes"
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. "io/ioutil"
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"os"
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"path/filepath"
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"testing"
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)
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func checkSize(t *testing.T, path string, size int64) {
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dir, err := os.Stat(path)
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if err != nil {
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t.Fatalf("Stat %q (looking for size %d): %s", path, size, err)
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}
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if dir.Size() != size {
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t.Errorf("Stat %q: size %d want %d", path, dir.Size(), size)
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}
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}
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func TestReadFile(t *testing.T) {
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filename := "rumpelstilzchen"
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contents, err := ReadFile(filename)
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if err == nil {
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t.Fatalf("ReadFile %s: error expected, none found", filename)
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}
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filename = "ioutil_test.go"
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contents, err = ReadFile(filename)
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if err != nil {
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t.Fatalf("ReadFile %s: %v", filename, err)
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}
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checkSize(t, filename, int64(len(contents)))
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}
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func TestWriteFile(t *testing.T) {
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f, err := TempFile("", "ioutil-test")
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if err != nil {
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t.Fatal(err)
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}
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filename := f.Name()
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data := "Programming today is a race between software engineers striving to " +
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"build bigger and better idiot-proof programs, and the Universe trying " +
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"to produce bigger and better idiots. So far, the Universe is winning."
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if err := WriteFile(filename, []byte(data), 0644); err != nil {
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t.Fatalf("WriteFile %s: %v", filename, err)
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}
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contents, err := ReadFile(filename)
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if err != nil {
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t.Fatalf("ReadFile %s: %v", filename, err)
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}
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if string(contents) != data {
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t.Fatalf("contents = %q\nexpected = %q", string(contents), data)
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}
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// cleanup
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f.Close()
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os.Remove(filename) // ignore error
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}
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func TestReadOnlyWriteFile(t *testing.T) {
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if os.Getuid() == 0 {
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t.Skipf("Root can write to read-only files anyway, so skip the read-only test.")
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}
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// We don't want to use TempFile directly, since that opens a file for us as 0600.
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tempDir, err := TempDir("", t.Name())
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if err != nil {
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t.Fatalf("TempDir %s: %v", t.Name(), err)
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}
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defer os.RemoveAll(tempDir)
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filename := filepath.Join(tempDir, "blurp.txt")
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shmorp := []byte("shmorp")
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florp := []byte("florp")
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err = WriteFile(filename, shmorp, 0444)
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if err != nil {
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t.Fatalf("WriteFile %s: %v", filename, err)
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}
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err = WriteFile(filename, florp, 0444)
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if err == nil {
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t.Fatalf("Expected an error when writing to read-only file %s", filename)
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}
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got, err := ReadFile(filename)
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if err != nil {
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t.Fatalf("ReadFile %s: %v", filename, err)
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}
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if !bytes.Equal(got, shmorp) {
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t.Fatalf("want %s, got %s", shmorp, got)
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}
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}
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func TestReadDir(t *testing.T) {
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dirname := "rumpelstilzchen"
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_, err := ReadDir(dirname)
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if err == nil {
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t.Fatalf("ReadDir %s: error expected, none found", dirname)
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}
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/* Does not work in gccgo testing environment.
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dirname = ".."
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list, err := ReadDir(dirname)
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if err != nil {
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t.Fatalf("ReadDir %s: %v", dirname, err)
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}
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foundFile := false
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foundSubDir := false
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for _, dir := range list {
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switch {
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case !dir.IsDir() && dir.Name() == "io_test.go":
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foundFile = true
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case dir.IsDir() && dir.Name() == "ioutil":
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foundSubDir = true
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}
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}
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if !foundFile {
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t.Fatalf("ReadDir %s: io_test.go file not found", dirname)
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}
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if !foundSubDir {
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t.Fatalf("ReadDir %s: ioutil directory not found", dirname)
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}
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*/
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}
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