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// Copyright 2012 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 (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"testing"
)
func TestErrIsExist(t *testing.T) {
f, err := ioutil.TempFile("", "_Go_ErrIsExist")
if err != nil {
t.Fatalf("open ErrIsExist tempfile: %s", err)
return
}
defer os.Remove(f.Name())
defer f.Close()
f2, err := os.OpenFile(f.Name(), os.O_RDWR|os.O_CREATE|os.O_EXCL, 0600)
if err == nil {
f2.Close()
t.Fatal("Open should have failed")
return
}
if s := checkErrorPredicate("os.IsExist", os.IsExist, err); s != "" {
t.Fatal(s)
return
}
}
func testErrNotExist(name string) string {
f, err := os.Open(name)
if err == nil {
f.Close()
return "Open should have failed"
}
if s := checkErrorPredicate("os.IsNotExist", os.IsNotExist, err); s != "" {
return s
}
err = os.Chdir(name)
if err == nil {
return "Chdir should have failed"
}
if s := checkErrorPredicate("os.IsNotExist", os.IsNotExist, err); s != "" {
return s
}
return ""
}
func TestErrIsNotExist(t *testing.T) {
tmpDir, err := ioutil.TempDir("", "_Go_ErrIsNotExist")
if err != nil {
t.Fatalf("create ErrIsNotExist tempdir: %s", err)
return
}
defer os.RemoveAll(tmpDir)
name := filepath.Join(tmpDir, "NotExists")
if s := testErrNotExist(name); s != "" {
t.Fatal(s)
return
}
name = filepath.Join(name, "NotExists2")
if s := testErrNotExist(name); s != "" {
t.Fatal(s)
return
}
}
func checkErrorPredicate(predName string, pred func(error) bool, err error) string {
if !pred(err) {
return fmt.Sprintf("%s does not work as expected for %#v", predName, err)
}
return ""
}
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