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