github.com/goproxy0/go@v0.0.0-20171111080102-49cc0c489d2c/src/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  	"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  }