syncthing/lib/fs/util_test.go

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// Copyright (C) 2019 The Syncthing Authors.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at https://mozilla.org/MPL/2.0/.
package fs
import (
"errors"
"math/rand"
"testing"
"unicode"
"unicode/utf8"
"github.com/syncthing/syncthing/lib/build"
)
func TestCommonPrefix(t *testing.T) {
test := func(first, second, expect string) {
t.Helper()
res := CommonPrefix(first, second)
if res != expect {
t.Errorf("Expected %s got %s", expect, res)
}
}
if build.IsWindows {
test(`c:\Audrius\Downloads`, `c:\Audrius\Docs`, `c:\Audrius`)
test(`c:\Audrius\Downloads`, `C:\Audrius\Docs`, ``) // Case differences :(
test(`C:\Audrius-a\Downloads`, `C:\Audrius-b\Docs`, `C:\`)
test(`\\?\C:\Audrius-a\Downloads`, `\\?\C:\Audrius-b\Docs`, `\\?\C:\`)
test(`\\?\C:\Audrius\Downloads`, `\\?\C:\Audrius\Docs`, `\\?\C:\Audrius`)
test(`Audrius-a\Downloads`, `Audrius-b\Docs`, ``)
test(`Audrius\Downloads`, `Audrius\Docs`, `Audrius`)
test(`c:\Audrius\Downloads`, `Audrius\Docs`, ``)
test(`c:\`, `c:\`, `c:\`)
test(`\\?\c:\`, `\\?\c:\`, `\\?\c:\`)
} else {
test(`/Audrius/Downloads`, `/Audrius/Docs`, `/Audrius`)
test(`/Audrius\Downloads`, `/Audrius\Docs`, `/`)
test(`/Audrius-a/Downloads`, `/Audrius-b/Docs`, `/`)
test(`Audrius\Downloads`, `Audrius\Docs`, ``) // Windows separators
test(`Audrius/Downloads`, `Audrius/Docs`, `Audrius`)
test(`Audrius-a\Downloads`, `Audrius-b\Docs`, ``)
test(`/Audrius/Downloads`, `Audrius/Docs`, ``)
test(`/`, `/`, `/`)
}
test(`Audrius`, `Audrius`, `Audrius`)
test(`.`, `.`, `.`)
}
func TestWindowsInvalidFilename(t *testing.T) {
cases := []struct {
name string
err error
}{
{`asdf.txt`, nil},
{`nul`, errInvalidFilenameWindowsReservedName},
{`nul.txt`, errInvalidFilenameWindowsReservedName},
{`nul.jpg.txt`, errInvalidFilenameWindowsReservedName},
{`some.nul.jpg`, nil},
{`foo>bar.txt`, errInvalidFilenameWindowsReservedChar},
{`foo \bar.txt`, errInvalidFilenameWindowsSpacePeriod},
{`foo.\bar.txt`, errInvalidFilenameWindowsSpacePeriod},
{`foo.d\bar.txt`, nil},
{`foo.d\bar .txt`, nil},
{`foo.d\bar. txt`, nil},
}
for _, tc := range cases {
err := WindowsInvalidFilename(tc.name)
if !errors.Is(err, tc.err) {
t.Errorf("For %q, got %v, expected %v", tc.name, err, tc.err)
}
t.Logf("%s: %v", tc.name, err)
}
}
func TestSanitizePath(t *testing.T) {
cases := [][2]string{
{"", ""},
{"foo", "foo"},
{`\*/foo\?/bar[{!@$%^&*#()}]`, "foo bar ()"},
{"Räksmörgås", "Räksmörgås"},
{`Räk \/ smörgås`, "Räk smörgås"},
{"هذا هو *\x07?اسم الملف", "هذا هو اسم الملف"},
{`../foo.txt`, `.. foo.txt`},
{" \t \n filename in \t space\r", "filename in space"},
{"你\xff好", `你 好`},
{"\000 foo", "foo"},
}
for _, tc := range cases {
res := SanitizePath(tc[0])
if res != tc[1] {
t.Errorf("SanitizePath(%q) => %q, expected %q", tc[0], res, tc[1])
}
}
}
// Fuzz test: SanitizePath must always return strings of printable UTF-8
// characters when fed random data.
//
// Note that space is considered printable, but other whitespace runes are not.
func TestSanitizePathFuzz(t *testing.T) {
buf := make([]byte, 128)
for i := 0; i < 100; i++ {
rand.Read(buf)
path := SanitizePath(string(buf))
if !utf8.ValidString(path) {
t.Errorf("SanitizePath(%q) => %q, not valid UTF-8", buf, path)
continue
}
for _, c := range path {
if !unicode.IsPrint(c) {
t.Errorf("non-printable rune %q in sanitized path", c)
}
}
}
}
func benchmarkWindowsInvalidFilename(b *testing.B, name string) {
for i := 0; i < b.N; i++ {
WindowsInvalidFilename(name)
}
}
func BenchmarkWindowsInvalidFilenameValid(b *testing.B) {
benchmarkWindowsInvalidFilename(b, "License.txt.gz")
}
func BenchmarkWindowsInvalidFilenameNUL(b *testing.B) {
benchmarkWindowsInvalidFilename(b, "nul.txt.gz")
}