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// 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
import (
"fmt";
"os";
"testing";
)
var dot = []string{
"dir_amd64_darwin.go",
"dir_amd64_linux.go",
"env.go",
"error.go",
"file.go",
"os_test.go",
"time.go",
"types.go",
"stat_amd64_darwin.go",
"stat_amd64_linux.go"
}
var etc = []string{
"group",
"hosts",
"passwd",
}
func size(name string, t *testing.T) uint64 {
file, err := Open(name, O_RDONLY, 0);
defer file.Close();
if err != nil {
t.Fatal("open failed:", err);
}
var buf [100]byte;
len := 0;
for {
n, e := file.Read(buf);
if n < 0 || e != nil {
t.Fatal("read failed:", err);
}
if n == 0 {
break
}
len += n;
}
return uint64(len)
}
func TestStat(t *testing.T) {
dir, err := Stat("/etc/passwd");
if err != nil {
t.Fatal("stat failed:", err);
}
if dir.Name != "passwd" {
t.Error("name should be passwd; is", dir.Name);
}
filesize := size("/etc/passwd", t);
if dir.Size != filesize {
t.Error("size should be ", filesize, "; is", dir.Size);
}
}
func TestFstat(t *testing.T) {
file, err1 := Open("/etc/passwd", O_RDONLY, 0);
defer file.Close();
if err1 != nil {
t.Fatal("open failed:", err1);
}
dir, err2 := file.Stat();
if err2 != nil {
t.Fatal("fstat failed:", err2);
}
if dir.Name != "passwd" {
t.Error("name should be passwd; is", dir.Name);
}
filesize := size("/etc/passwd", t);
if dir.Size != filesize {
t.Error("size should be ", filesize, "; is", dir.Size);
}
}
func TestLstat(t *testing.T) {
dir, err := Lstat("/etc/passwd");
if err != nil {
t.Fatal("lstat failed:", err);
}
if dir.Name != "passwd" {
t.Error("name should be passwd; is", dir.Name);
}
filesize := size("/etc/passwd", t);
if dir.Size != filesize {
t.Error("size should be ", filesize, "; is", dir.Size);
}
}
func testReaddirnames(dir string, contents []string, t *testing.T) {
file, err := Open(dir, O_RDONLY, 0);
defer file.Close();
if err != nil {
t.Fatalf("open %q failed: %v", dir, err);
}
s, err2 := file.Readdirnames(-1);
if err2 != nil {
t.Fatalf("readdirnames %q failed: %v", err2);
}
for i, m := range contents {
found := false;
for j, n := range s {
if n == "." || n == ".." {
t.Errorf("got %s in directory", n);
}
if m == n {
if found {
t.Error("present twice:", m);
}
found = true
}
}
if !found {
t.Error("could not find", m);
}
}
}
func testReaddir(dir string, contents []string, t *testing.T) {
file, err := Open(dir, O_RDONLY, 0);
defer file.Close();
if err != nil {
t.Fatalf("open %q failed: %v", dir, err);
}
s, err2 := file.Readdir(-1);
if err2 != nil {
t.Fatalf("readdir %q failed: %v", dir, err2);
}
for i, m := range contents {
found := false;
for j, n := range s {
if m == n.Name {
if found {
t.Error("present twice:", m);
}
found = true
}
}
if !found {
t.Error("could not find", m);
}
}
}
func TestReaddirnames(t *testing.T) {
testReaddirnames(".", dot, t);
testReaddirnames("/etc", etc, t);
}
func TestReaddir(t *testing.T) {
testReaddir(".", dot, t);
testReaddir("/etc", etc, t);
}
// Read the directory one entry at a time.
func smallReaddirnames(file *File, length int, t *testing.T) []string {
names := make([]string, length);
count := 0;
for {
d, err := file.Readdirnames(1);
if err != nil {
t.Fatalf("readdir %q failed: %v", file.Name(), err);
}
if len(d) == 0 {
break
}
names[count] = d[0];
count++;
}
return names[0:count]
}
// Check that reading a directory one entry at a time gives the same result
// as reading it all at once.
func TestReaddirnamesOneAtATime(t *testing.T) {
dir := "/usr/bin"; // big directory that doesn't change often.
file, err := Open(dir, O_RDONLY, 0);
defer file.Close();
if err != nil {
t.Fatalf("open %q failed: %v", dir, err);
}
all, err1 := file.Readdirnames(-1);
if err1 != nil {
t.Fatalf("readdirnames %q failed: %v", dir, err1);
}
file1, err2 := Open(dir, O_RDONLY, 0);
if err2 != nil {
t.Fatalf("open %q failed: %v", dir, err2);
}
small := smallReaddirnames(file1, len(all)+100, t); // +100 in case we screw up
for i, n := range all {
if small[i] != n {
t.Errorf("small read %q %q mismatch: %v", small[i], n);
}
}
}
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