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Source file src/io/ioutil/tempfile_test.go

Documentation: io/ioutil

     1  // Copyright 2010 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package ioutil
     6  
     7  import (
     8  	"os"
     9  	"path/filepath"
    10  	"regexp"
    11  	"testing"
    12  )
    13  
    14  func TestTempFile(t *testing.T) {
    15  	dir, err := TempDir("", "TestTempFile_BadDir")
    16  	if err != nil {
    17  		t.Fatal(err)
    18  	}
    19  	defer os.RemoveAll(dir)
    20  
    21  	nonexistentDir := filepath.Join(dir, "_not_exists_")
    22  	f, err := TempFile(nonexistentDir, "foo")
    23  	if f != nil || err == nil {
    24  		t.Errorf("TempFile(%q, `foo`) = %v, %v", nonexistentDir, f, err)
    25  	}
    26  
    27  	dir = os.TempDir()
    28  	f, err = TempFile(dir, "ioutil_test")
    29  	if f == nil || err != nil {
    30  		t.Errorf("TempFile(dir, `ioutil_test`) = %v, %v", f, err)
    31  	}
    32  	if f != nil {
    33  		f.Close()
    34  		os.Remove(f.Name())
    35  		re := regexp.MustCompile("^" + regexp.QuoteMeta(filepath.Join(dir, "ioutil_test")) + "[0-9]+$")
    36  		if !re.MatchString(f.Name()) {
    37  			t.Errorf("TempFile(`"+dir+"`, `ioutil_test`) created bad name %s", f.Name())
    38  		}
    39  	}
    40  }
    41  
    42  func TestTempDir(t *testing.T) {
    43  	name, err := TempDir("/_not_exists_", "foo")
    44  	if name != "" || err == nil {
    45  		t.Errorf("TempDir(`/_not_exists_`, `foo`) = %v, %v", name, err)
    46  	}
    47  
    48  	dir := os.TempDir()
    49  	name, err = TempDir(dir, "ioutil_test")
    50  	if name == "" || err != nil {
    51  		t.Errorf("TempDir(dir, `ioutil_test`) = %v, %v", name, err)
    52  	}
    53  	if name != "" {
    54  		os.Remove(name)
    55  		re := regexp.MustCompile("^" + regexp.QuoteMeta(filepath.Join(dir, "ioutil_test")) + "[0-9]+$")
    56  		if !re.MatchString(name) {
    57  			t.Errorf("TempDir(`"+dir+"`, `ioutil_test`) created bad name %s", name)
    58  		}
    59  	}
    60  }
    61  
    62  // test that we return a nice error message if the dir argument to TempDir doesn't
    63  // exist (or that it's empty and os.TempDir doesn't exist)
    64  func TestTempDir_BadDir(t *testing.T) {
    65  	dir, err := TempDir("", "TestTempDir_BadDir")
    66  	if err != nil {
    67  		t.Fatal(err)
    68  	}
    69  	defer os.RemoveAll(dir)
    70  
    71  	badDir := filepath.Join(dir, "not-exist")
    72  	_, err = TempDir(badDir, "foo")
    73  	if pe, ok := err.(*os.PathError); !ok || !os.IsNotExist(err) || pe.Path != badDir {
    74  		t.Errorf("TempDir error = %#v; want PathError for path %q satisifying os.IsNotExist", err, badDir)
    75  	}
    76  }
    77  

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