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 "testing" 11 ) 12 13 func TestFixLongPath(t *testing.T) { 14 // 248 is long enough to trigger the longer-than-248 checks in 15 // fixLongPath, but short enough not to make a path component 16 // longer than 255, which is illegal on Windows. (which 17 // doesn't really matter anyway, since this is purely a string 18 // function we're testing, and it's not actually being used to 19 // do a system call) 20 veryLong := "l" + strings.Repeat("o", 248) + "ng" 21 for _, test := range []struct{ in, want string }{ 22 // Short; unchanged: 23 {`C:\short.txt`, `C:\short.txt`}, 24 {`C:\`, `C:\`}, 25 {`C:`, `C:`}, 26 // The "long" substring is replaced by a looooooong 27 // string which triggers the rewriting. Except in the 28 // cases below where it doesn't. 29 {`C:\long\foo.txt`, `\\?\C:\long\foo.txt`}, 30 {`C:/long/foo.txt`, `\\?\C:\long\foo.txt`}, 31 {`C:\long\foo\\bar\.\baz\\`, `\\?\C:\long\foo\bar\baz`}, 32 {`\\unc\path`, `\\unc\path`}, 33 {`long.txt`, `long.txt`}, 34 {`C:long.txt`, `C:long.txt`}, 35 {`c:\long\..\bar\baz`, `c:\long\..\bar\baz`}, 36 {`\\?\c:\long\foo.txt`, `\\?\c:\long\foo.txt`}, 37 {`\\?\c:\long/foo.txt`, `\\?\c:\long/foo.txt`}, 38 } { 39 in := strings.Replace(test.in, "long", veryLong, -1) 40 want := strings.Replace(test.want, "long", veryLong, -1) 41 if got := os.FixLongPath(in); got != want { 42 got = strings.Replace(got, veryLong, "long", -1) 43 t.Errorf("fixLongPath(%q) = %q; want %q", test.in, got, test.want) 44 } 45 } 46 } 47
