minio/internal/lock/lock_windows_test.go

//go:build windows
// +build windows

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package lock

import (
	"strings"
	"testing"
)

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 := fixLongPath(in); got != want {
			got = strings.Replace(got, veryLong, "long", -1)
			t.Errorf("fixLongPath(%q) = %q; want %q", test.in, got, test.want)
		}
	}
}