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// Copyright 2010 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 ioutil_test

import (
        . "io/ioutil"
        "os"
        "path/filepath"
        "regexp"
        "testing"
)

func TestTempFile(t *testing.T) {
        f, err := TempFile("/_not_exists_", "foo")
        if f != nil || err == nil {
                t.Errorf("TempFile(`/_not_exists_`, `foo`) = %v, %v", f, err)
        }

        dir := os.TempDir()
        f, err = TempFile(dir, "ioutil_test")
        if f == nil || err != nil {
                t.Errorf("TempFile(dir, `ioutil_test`) = %v, %v", f, err)
        }
        if f != nil {
                f.Close()
                os.Remove(f.Name())
                re := regexp.MustCompile("^" + regexp.QuoteMeta(filepath.Join(dir, "ioutil_test")) + "[0-9]+$")
                if !re.MatchString(f.Name()) {
                        t.Errorf("TempFile(`"+dir+"`, `ioutil_test`) created bad name %s", f.Name())
                }
        }
}

func TestTempDir(t *testing.T) {
        name, err := TempDir("/_not_exists_", "foo")
        if name != "" || err == nil {
                t.Errorf("TempDir(`/_not_exists_`, `foo`) = %v, %v", name, err)
        }

        dir := os.TempDir()
        name, err = TempDir(dir, "ioutil_test")
        if name == "" || err != nil {
                t.Errorf("TempDir(dir, `ioutil_test`) = %v, %v", name, err)
        }
        if name != "" {
                os.Remove(name)
                re := regexp.MustCompile("^" + regexp.QuoteMeta(filepath.Join(dir, "ioutil_test")) + "[0-9]+$")
                if !re.MatchString(name) {
                        t.Errorf("TempDir(`"+dir+"`, `ioutil_test`) created bad name %s", name)
                }
        }
}