// 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 os_test import ( "errors" "io/fs" . "os" "path/filepath" "regexp" "strings" "testing" ) func TestCreateTemp(t *testing.T) { dir, err := MkdirTemp("", "TestCreateTempBadDir") if err != nil { t.Fatal(err) } defer RemoveAll(dir) nonexistentDir := filepath.Join(dir, "_not_exists_") f, err := CreateTemp(nonexistentDir, "foo") if f != nil || err == nil { t.Errorf("CreateTemp(%q, `foo`) = %v, %v", nonexistentDir, f, err) } } func TestCreateTempPattern(t *testing.T) { tests := []struct{ pattern, prefix, suffix string }{ {"tempfile_test", "tempfile_test", ""}, {"tempfile_test*", "tempfile_test", ""}, {"tempfile_test*xyz", "tempfile_test", "xyz"}, } for _, test := range tests { f, err := CreateTemp("", test.pattern) if err != nil { t.Errorf("CreateTemp(..., %q) error: %v", test.pattern, err) continue } defer Remove(f.Name()) base := filepath.Base(f.Name()) f.Close() if !(strings.HasPrefix(base, test.prefix) && strings.HasSuffix(base, test.suffix)) { t.Errorf("CreateTemp pattern %q created bad name %q; want prefix %q & suffix %q", test.pattern, base, test.prefix, test.suffix) } } } func TestCreateTempBadPattern(t *testing.T) { tmpDir, err := MkdirTemp("", t.Name()) if err != nil { t.Fatal(err) } defer RemoveAll(tmpDir) const sep = string(PathSeparator) tests := []struct { pattern string wantErr bool }{ {"ioutil*test", false}, {"tempfile_test*foo", false}, {"tempfile_test" + sep + "foo", true}, {"tempfile_test*" + sep + "foo", true}, {"tempfile_test" + sep + "*foo", true}, {sep + "tempfile_test" + sep + "*foo", true}, {"tempfile_test*foo" + sep, true}, } for _, tt := range tests { t.Run(tt.pattern, func(t *testing.T) { tmpfile, err := CreateTemp(tmpDir, tt.pattern) if tmpfile != nil { defer tmpfile.Close() } if tt.wantErr { if err == nil { t.Errorf("CreateTemp(..., %#q) succeeded, expected error", tt.pattern) } if !errors.Is(err, ErrPatternHasSeparator) { t.Errorf("CreateTemp(..., %#q): %v, expected ErrPatternHasSeparator", tt.pattern, err) } } else if err != nil { t.Errorf("CreateTemp(..., %#q): %v", tt.pattern, err) } }) } } func TestMkdirTemp(t *testing.T) { name, err := MkdirTemp("/_not_exists_", "foo") if name != "" || err == nil { t.Errorf("MkdirTemp(`/_not_exists_`, `foo`) = %v, %v", name, err) } tests := []struct { pattern string wantPrefix, wantSuffix string }{ {"tempfile_test", "tempfile_test", ""}, {"tempfile_test*", "tempfile_test", ""}, {"tempfile_test*xyz", "tempfile_test", "xyz"}, } dir := filepath.Clean(TempDir()) runTestMkdirTemp := func(t *testing.T, pattern, wantRePat string) { name, err := MkdirTemp(dir, pattern) if name == "" || err != nil { t.Fatalf("MkdirTemp(dir, `tempfile_test`) = %v, %v", name, err) } defer Remove(name) re := regexp.MustCompile(wantRePat) if !re.MatchString(name) { t.Errorf("MkdirTemp(%q, %q) created bad name\n\t%q\ndid not match pattern\n\t%q", dir, pattern, name, wantRePat) } } for _, tt := range tests { t.Run(tt.pattern, func(t *testing.T) { wantRePat := "^" + regexp.QuoteMeta(filepath.Join(dir, tt.wantPrefix)) + "[0-9]+" + regexp.QuoteMeta(tt.wantSuffix) + "$" runTestMkdirTemp(t, tt.pattern, wantRePat) }) } // Separately testing "*xyz" (which has no prefix). That is when constructing the // pattern to assert on, as in the previous loop, using filepath.Join for an empty // prefix filepath.Join(dir, ""), produces the pattern: // ^[0-9]+xyz$ // yet we just want to match // "^/[0-9]+xyz" t.Run("*xyz", func(t *testing.T) { wantRePat := "^" + regexp.QuoteMeta(filepath.Join(dir)) + regexp.QuoteMeta(string(filepath.Separator)) + "[0-9]+xyz$" runTestMkdirTemp(t, "*xyz", wantRePat) }) } // test that we return a nice error message if the dir argument to TempDir doesn't // exist (or that it's empty and TempDir doesn't exist) func TestMkdirTempBadDir(t *testing.T) { dir, err := MkdirTemp("", "MkdirTempBadDir") if err != nil { t.Fatal(err) } defer RemoveAll(dir) badDir := filepath.Join(dir, "not-exist") _, err = MkdirTemp(badDir, "foo") if pe, ok := err.(*fs.PathError); !ok || !IsNotExist(err) || pe.Path != badDir { t.Errorf("TempDir error = %#v; want PathError for path %q satisifying IsNotExist", err, badDir) } } func TestMkdirTempBadPattern(t *testing.T) { tmpDir, err := MkdirTemp("", t.Name()) if err != nil { t.Fatal(err) } defer RemoveAll(tmpDir) const sep = string(PathSeparator) tests := []struct { pattern string wantErr bool }{ {"ioutil*test", false}, {"tempfile_test*foo", false}, {"tempfile_test" + sep + "foo", true}, {"tempfile_test*" + sep + "foo", true}, {"tempfile_test" + sep + "*foo", true}, {sep + "tempfile_test" + sep + "*foo", true}, {"tempfile_test*foo" + sep, true}, } for _, tt := range tests { t.Run(tt.pattern, func(t *testing.T) { _, err := MkdirTemp(tmpDir, tt.pattern) if tt.wantErr { if err == nil { t.Errorf("MkdirTemp(..., %#q) succeeded, expected error", tt.pattern) } if !errors.Is(err, ErrPatternHasSeparator) { t.Errorf("MkdirTemp(..., %#q): %v, expected ErrPatternHasSeparator", tt.pattern, err) } } else if err != nil { t.Errorf("MkdirTemp(..., %#q): %v", tt.pattern, err) } }) } }