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Source file src/os/path_windows_test.go

Documentation: os

  // Copyright 2016 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 (
  func TestFixLongPath(t *testing.T) {
  	// 248 is long enough to trigger the longer-than-248 checks in
  	// fixLongPath, but short enough not to make a path component
  	// longer than 255, which is illegal on Windows. (which
  	// doesn't really matter anyway, since this is purely a string
  	// function we're testing, and it's not actually being used to
  	// do a system call)
  	veryLong := "l" + strings.Repeat("o", 248) + "ng"
  	for _, test := range []struct{ in, want string }{
  		// Short; unchanged:
  		{`C:\short.txt`, `C:\short.txt`},
  		{`C:\`, `C:\`},
  		{`C:`, `C:`},
  		// The "long" substring is replaced by a looooooong
  		// string which triggers the rewriting. Except in the
  		// cases below where it doesn't.
  		{`C:\long\foo.txt`, `\\?\C:\long\foo.txt`},
  		{`C:/long/foo.txt`, `\\?\C:\long\foo.txt`},
  		{`C:\long\foo\\bar\.\baz\\`, `\\?\C:\long\foo\bar\baz`},
  		{`\\unc\path`, `\\unc\path`},
  		{`long.txt`, `long.txt`},
  		{`C:long.txt`, `C:long.txt`},
  		{`c:\long\..\bar\baz`, `c:\long\..\bar\baz`},
  		{`\\?\c:\long\foo.txt`, `\\?\c:\long\foo.txt`},
  		{`\\?\c:\long/foo.txt`, `\\?\c:\long/foo.txt`},
  	} {
  		in := strings.Replace(test.in, "long", veryLong, -1)
  		want := strings.Replace(test.want, "long", veryLong, -1)
  		if got := os.FixLongPath(in); got != want {
  			got = strings.Replace(got, veryLong, "long", -1)
  			t.Errorf("fixLongPath(%q) = %q; want %q", test.in, got, test.want)

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