github.com/gidoBOSSftw5731/go/src@v0.0.0-20210226122457-d24b0edbf019/os/path_windows_test.go (about) 1 // Copyright 2016 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 os_test 6 7 import ( 8 "os" 9 "strings" 10 "syscall" 11 "testing" 12 ) 13 14 func TestFixLongPath(t *testing.T) { 15 // 248 is long enough to trigger the longer-than-248 checks in 16 // fixLongPath, but short enough not to make a path component 17 // longer than 255, which is illegal on Windows. (which 18 // doesn't really matter anyway, since this is purely a string 19 // function we're testing, and it's not actually being used to 20 // do a system call) 21 veryLong := "l" + strings.Repeat("o", 248) + "ng" 22 for _, test := range []struct{ in, want string }{ 23 // Short; unchanged: 24 {`C:\short.txt`, `C:\short.txt`}, 25 {`C:\`, `C:\`}, 26 {`C:`, `C:`}, 27 // The "long" substring is replaced by a looooooong 28 // string which triggers the rewriting. Except in the 29 // cases below where it doesn't. 30 {`C:\long\foo.txt`, `\\?\C:\long\foo.txt`}, 31 {`C:/long/foo.txt`, `\\?\C:\long\foo.txt`}, 32 {`C:\long\foo\\bar\.\baz\\`, `\\?\C:\long\foo\bar\baz`}, 33 {`\\unc\path`, `\\unc\path`}, 34 {`long.txt`, `long.txt`}, 35 {`C:long.txt`, `C:long.txt`}, 36 {`c:\long\..\bar\baz`, `c:\long\..\bar\baz`}, 37 {`\\?\c:\long\foo.txt`, `\\?\c:\long\foo.txt`}, 38 {`\\?\c:\long/foo.txt`, `\\?\c:\long/foo.txt`}, 39 } { 40 in := strings.ReplaceAll(test.in, "long", veryLong) 41 want := strings.ReplaceAll(test.want, "long", veryLong) 42 if got := os.FixLongPath(in); got != want { 43 got = strings.ReplaceAll(got, veryLong, "long") 44 t.Errorf("fixLongPath(%q) = %q; want %q", test.in, got, test.want) 45 } 46 } 47 } 48 49 func TestMkdirAllExtendedLength(t *testing.T) { 50 tmpDir, err := os.MkdirTemp("", "TestMkdirAllExtendedLength") 51 if err != nil { 52 t.Fatal(err) 53 } 54 defer os.RemoveAll(tmpDir) 55 56 const prefix = `\\?\` 57 if len(tmpDir) < 4 || tmpDir[:4] != prefix { 58 fullPath, err := syscall.FullPath(tmpDir) 59 if err != nil { 60 t.Fatalf("FullPath(%q) fails: %v", tmpDir, err) 61 } 62 tmpDir = prefix + fullPath 63 } 64 path := tmpDir + `\dir\` 65 err = os.MkdirAll(path, 0777) 66 if err != nil { 67 t.Fatalf("MkdirAll(%q) failed: %v", path, err) 68 } 69 70 path = path + `.\dir2` 71 err = os.MkdirAll(path, 0777) 72 if err == nil { 73 t.Fatalf("MkdirAll(%q) should have failed, but did not", path) 74 } 75 } 76 77 func TestOpenRootSlash(t *testing.T) { 78 tests := []string{ 79 `/`, 80 `\`, 81 } 82 83 for _, test := range tests { 84 dir, err := os.Open(test) 85 if err != nil { 86 t.Fatalf("Open(%q) failed: %v", test, err) 87 } 88 dir.Close() 89 } 90 }