// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package os_test
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import (
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"io/ioutil"
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"os"
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"strings"
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"syscall"
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"testing"
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)
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func TestFixLongPath(t *testing.T) {
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// 248 is long enough to trigger the longer-than-248 checks in
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// fixLongPath, but short enough not to make a path component
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// longer than 255, which is illegal on Windows. (which
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// doesn't really matter anyway, since this is purely a string
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// function we're testing, and it's not actually being used to
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// do a system call)
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veryLong := "l" + strings.Repeat("o", 248) + "ng"
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for _, test := range []struct{ in, want string }{
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// Short; unchanged:
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{`C:\short.txt`, `C:\short.txt`},
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{`C:\`, `C:\`},
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{`C:`, `C:`},
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// The "long" substring is replaced by a looooooong
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// string which triggers the rewriting. Except in the
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// cases below where it doesn't.
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{`C:\long\foo.txt`, `\\?\C:\long\foo.txt`},
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{`C:/long/foo.txt`, `\\?\C:\long\foo.txt`},
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{`C:\long\foo\\bar\.\baz\\`, `\\?\C:\long\foo\bar\baz`},
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{`\\unc\path`, `\\unc\path`},
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{`long.txt`, `long.txt`},
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{`C:long.txt`, `C:long.txt`},
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{`c:\long\..\bar\baz`, `c:\long\..\bar\baz`},
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{`\\?\c:\long\foo.txt`, `\\?\c:\long\foo.txt`},
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{`\\?\c:\long/foo.txt`, `\\?\c:\long/foo.txt`},
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} {
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in := strings.ReplaceAll(test.in, "long", veryLong)
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want := strings.ReplaceAll(test.want, "long", veryLong)
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if got := os.FixLongPath(in); got != want {
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got = strings.ReplaceAll(got, veryLong, "long")
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t.Errorf("fixLongPath(%q) = %q; want %q", test.in, got, test.want)
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}
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}
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}
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func TestMkdirAllExtendedLength(t *testing.T) {
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tmpDir, err := ioutil.TempDir("", "TestMkdirAllExtendedLength")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(tmpDir)
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const prefix = `\\?\`
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if len(tmpDir) < 4 || tmpDir[:4] != prefix {
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fullPath, err := syscall.FullPath(tmpDir)
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if err != nil {
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t.Fatalf("FullPath(%q) fails: %v", tmpDir, err)
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}
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tmpDir = prefix + fullPath
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}
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path := tmpDir + `\dir\`
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err = os.MkdirAll(path, 0777)
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if err != nil {
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t.Fatalf("MkdirAll(%q) failed: %v", path, err)
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}
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path = path + `.\dir2`
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err = os.MkdirAll(path, 0777)
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if err == nil {
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t.Fatalf("MkdirAll(%q) should have failed, but did not", path)
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}
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}
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