Spracherkennung für: .go vermutete Sprache: Unknown {[0] [0] [0]} [Methode: Schwerpunktbildung, einfache Gewichte, sechs Dimensionen]
// Copyright
2018 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version
2.
0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//
http://www.apache.org/licenses/LICENSE-2.
0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package pathtools
import (
"fmt"
"io"
"os"
"path/filepath"
"reflect"
"slices"
"syscall"
"testing"
)
const testdataDir = "testdata/dangling"
func symlinkMockFs() *mockFs {
files := []string{
"a/a/a",
"a/a/f -> ../../f",
"b -> a",
"c -> a/a",
"d -> c",
"e -> a/a/a",
"dangling -> missing",
"f",
}
mockFiles := make(map[string][]byte)
for _, f := range files {
mockFiles[f] = nil
mockFiles[filepath.Join(pwd, "testdata", f)] = nil
}
return MockFs(mockFiles).(*mockFs)
}
func TestMockFs_followSymlinks(t *testing.T) {
testCases := []struct {
from, to string
}{
{".", "."},
{"/", "/"},
{"a", "a"},
{"a/a", "a/a"},
{"a/a/a", "a/a/a"},
{"a/a/f", "f"},
{"b", "a"},
{"b/a", "a/a"},
{"b/a/a", "a/a/a"},
{"b/a/f", "f"},
{"c/a", "a/a/a"},
{"c/f", "f"},
{"d/a", "a/a/a"},
{"d/f", "f"},
{"e", "a/a/a"},
{"f", "f"},
{"dangling", "missing"},
{"a/missing", "a/missing"},
{"b/missing", "a/missing"},
{"c/missing", "a/a/missing"},
{"d/missing", "a/a/missing"},
{"e/missing", "a/a/a/missing"},
{"dangling/missing", "missing/missing"},
{"a/missing/missing", "a/missing/missing"},
{"b/missing/missing", "a/missing/missing"},
{"c/missing/missing", "a/a/missing/missing"},
{"d/missing/missing", "a/a/missing/missing"},
{"e/missing/missing", "a/a/a/missing/missing"},
{"dangling/missing/missing", "missing/missing/missing"},
}
mock := symlinkMockFs()
for _, test := range testCases {
t.Run(test.from, func(t *testing.T) {
got := mock.followSymlinks(test.from)
if got != test.to {
t.Errorf("want: %v, got %v", test.to, got)
}
})
}
}
func runTestFs(t *testing.T, f func(t *testing.T, fs FileSystem, dir string)) {
mock := symlinkMockFs()
wd, _ := os.Getwd()
absTestDataDir := filepath.Join(wd, testdataDir)
run := func(t *testing.T, fs FileSystem) {
t.Run("relpath", func(t *testing.T) {
f(t, fs, "")
})
t.Run("abspath", func(t *testing.T) {
f(t, fs, absTestDataDir)
})
}
t.Run("mock", func(t *testing.T) {
f(t, mock, "")
})
t.Run("os", func(t *testing.T) {
os.Chdir(absTestDataDir)
defer os.Chdir(wd)
run(t, OsFs)
})
t.Run("os relative srcDir", func(t *testing.T) {
run(t, NewOsFs(testdataDir))
})
t.Run("os absolute srcDir", func(t *testing.T) {
os.Chdir("/")
defer os.Chdir(wd)
run(t, NewOsFs(filepath.Join(wd, testdataDir)))
})
}
func TestFs_IsDir(t *testing.T) {
testCases := []struct {
name string
isDir bool
err error
}{
{"a", true, nil},
{"a/a", true, nil},
{"a/a/a", false, nil},
{"a/a/f", false, nil},
{"b", true, nil},
{"b/a", true, nil},
{"b/a/a", false, nil},
{"b/a/f", false, nil},
{"c", true, nil},
{"c/a", false, nil},
{"c/f", false, nil},
{"d", true, nil},
{"d/a", false, nil},
{"d/f", false, nil},
{"e", false, nil},
{"f", false, nil},
{"dangling", false, os.ErrNotExist},
{"a/missing", false, os.ErrNotExist},
{"b/missing", false, os.ErrNotExist},
{"c/missing", false, os.ErrNotExist},
{"d/missing", false, os.ErrNotExist},
{"e/missing", false, syscall.ENOTDIR},
{"dangling/missing", false, os.ErrNotExist},
{"a/missing/missing", false, os.ErrNotExist},
{"b/missing/missing", false, os.ErrNotExist},
{"c/missing/missing", false, os.ErrNotExist},
{"d/missing/missing", false, os.ErrNotExist},
{"e/missing/missing", false, syscall.ENOTDIR},
{"dangling/missing/missing", false, os.ErrNotExist},
{"c/f/missing", false, syscall.ENOTDIR},
}
runTestFs(t, func(t *testing.T, fs FileSystem, dir string) {
for _, test := range testCases {
t.Run(test.name, func(t *testing.T) {
got, err := fs.IsDir(filepath.Join(dir, test.name))
checkErr(t, test.err, err)
if got != test.isDir {
t.Errorf("want: %v, got %v", test.isDir, got)
}
})
}
})
}
func TestFs_ListDirsRecursiveFollowSymlinks(t *testing.T) {
testCases := []struct {
name string
dirs []string
err error
}{
{".", []string{".", "a", "a/a", "b", "b/a", "c", "d"}, nil},
{"a", []string{"a", "a/a"}, nil},
{"a/a", []string{"a/a"}, nil},
{"a/a/a", nil, nil},
{"b", []string{"b", "b/a"}, nil},
{"b/a", []string{"b/a"}, nil},
{"b/a/a", nil, nil},
{"c", []string{"c"}, nil},
{"c/a", nil, nil},
{"d", []string{"d"}, nil},
{"d/a", nil, nil},
{"e", nil, nil},
{"dangling", nil, os.ErrNotExist},
{"missing", nil, os.ErrNotExist},
}
runTestFs(t, func(t *testing.T, fs FileSystem, dir string) {
for _, test := range testCases {
t.Run(test.name, func(t *testing.T) {
got, err := fs.ListDirsRecursive(filepath.Join(dir, test.name), FollowSymlinks)
checkErr(t, test.err, err)
want := slices.Clone(test.dirs)
for i := range want {
want[i] = filepath.Join(dir, want[i])
}
if !reflect.DeepEqual(got, want) {
t.Errorf("want: %v, got %v", want, got)
}
})
}
})
}
func TestFs_ListDirsRecursiveDontFollowSymlinks(t *testing.T) {
testCases := []struct {
name string
dirs []string
err error
}{
{".", []string{".", "a", "a/a"}, nil},
{"a", []string{"a", "a/a"}, nil},
{"a/a", []string{"a/a"}, nil},
{"a/a/a", nil, nil},
{"b", []string{"b", "b/a"}, nil},
{"b/a", []string{"b/a"}, nil},
{"b/a/a", nil, nil},
{"c", []string{"c"}, nil},
{"c/a", nil, nil},
{"d", []string{"d"}, nil},
{"d/a", nil, nil},
{"e", nil, nil},
{"dangling", nil, os.ErrNotExist},
{"missing", nil, os.ErrNotExist},
}
runTestFs(t, func(t *testing.T, fs FileSystem, dir string) {
for _, test := range testCases {
t.Run(test.name, func(t *testing.T) {
got, err := fs.ListDirsRecursive(filepath.Join(dir, test.name), DontFollowSymlinks)
checkErr(t, test.err, err)
want := slices.Clone(test.dirs)
for i := range want {
want[i] = filepath.Join(dir, want[i])
}
if !reflect.DeepEqual(got, want) {
t.Errorf("want: %v, got %v", want, got)
}
})
}
})
}
func TestFs_Readlink(t *testing.T) {
testCases := []struct {
from, to string
err error
}{
{".", "", syscall.EINVAL},
{"/", "", syscall.EINVAL},
{"a", "", syscall.EINVAL},
{"a/a", "", syscall.EINVAL},
{"a/a/a", "", syscall.EINVAL},
{"a/a/f", "../../f", nil},
{"b", "a", nil},
{"b/a", "", syscall.EINVAL},
{"b/a/a", "", syscall.EINVAL},
{"b/a/f", "../../f", nil},
{"c", "a/a", nil},
{"c/a", "", syscall.EINVAL},
{"c/f", "../../f", nil},
{"d/a", "", syscall.EINVAL},
{"d/f", "../../f", nil},
{"e", "a/a/a", nil},
{"f", "", syscall.EINVAL},
{"dangling", "missing", nil},
{"a/missing", "", os.ErrNotExist},
{"b/missing", "", os.ErrNotExist},
{"c/missing", "", os.ErrNotExist},
{"d/missing", "", os.ErrNotExist},
{"e/missing", "", os.ErrNotExist},
{"dangling/missing", "", os.ErrNotExist},
{"a/missing/missing", "", os.ErrNotExist},
{"b/missing/missing", "", os.ErrNotExist},
{"c/missing/missing", "", os.ErrNotExist},
{"d/missing/missing", "", os.ErrNotExist},
{"e/missing/missing", "", os.ErrNotExist},
{"dangling/missing/missing", "", os.ErrNotExist},
}
runTestFs(t, func(t *testing.T, fs FileSystem, dir string) {
for _, test := range testCases {
t.Run(test.from, func(t *testing.T) {
got, err := fs.Readlink(test.from)
checkErr(t, test.err, err)
if got != test.to {
t.Errorf("fs.Readlink(%q) want: %q, got %q", test.from, test.to, got)
}
})
}
})
}
func TestFs_Lstat(t *testing.T) {
testCases := []struct {
name string
mode os.FileMode
size int64
err error
}{
{".", os.ModeDir,
0, nil},
{"/", os.ModeDir,
0, nil},
{"a", os.ModeDir,
0, nil},
{"a/a", os.ModeDir,
0, nil},
{"a/a/a",
0,
0, nil},
{"a/a/f", os.ModeSymlink,
7, nil},
{"b", os.ModeSymlink,
1, nil},
{"b/a", os.ModeDir,
0, nil},
{"b/a/a",
0,
0, nil},
{"b/a/f", os.ModeSymlink,
7, nil},
{"c", os.ModeSymlink,
3, nil},
{"c/a",
0,
0, nil},
{"c/f", os.ModeSymlink,
7, nil},
{"d/a",
0,
0, nil},
{"d/f", os.ModeSymlink,
7, nil},
{"e", os.ModeSymlink,
5, nil},
{"f",
0,
0, nil},
{"dangling", os.ModeSymlink,
7, nil},
{"a/missing",
0,
0, os.ErrNotExist},
{"b/missing",
0,
0, os.ErrNotExist},
{"c/missing",
0,
0, os.ErrNotExist},
{"d/missing",
0,
0, os.ErrNotExist},
{"e/missing",
0,
0, os.ErrNotExist},
{"dangling/missing",
0,
0, os.ErrNotExist},
{"a/missing/missing",
0,
0, os.ErrNotExist},
{"b/missing/missing",
0,
0, os.ErrNotExist},
{"c/missing/missing",
0,
0, os.ErrNotExist},
{"d/missing/missing",
0,
0, os.ErrNotExist},
{"e/missing/missing",
0,
0, os.ErrNotExist},
{"dangling/missing/missing",
0,
0, os.ErrNotExist},
}
runTestFs(t, func(t *testing.T, fs FileSystem, dir string) {
for _, test := range testCases {
t.Run(test.name, func(t *testing.T) {
got, err := fs.Lstat(filepath.Join(dir, test.name))
checkErr(t, test.err, err)
if err != nil {
return
}
if got.Mode()&os.ModeType != test.mode {
t.Errorf("fs.Lstat(%q).Mode()&os.ModeType want: %x, got %x",
test.name, test.mode, got.Mode()&os.ModeType)
}
if test.mode ==
0 && got.Size() != test.size {
t.Errorf("fs.Lstat(%q).Size() want: %d, got %d", test.name, test.size, got.Size())
}
})
}
})
}
func TestFs_Stat(t *testing.T) {
testCases := []struct {
name string
mode os.FileMode
size int64
err error
}{
{".", os.ModeDir,
0, nil},
{"/", os.ModeDir,
0, nil},
{"a", os.ModeDir,
0, nil},
{"a/a", os.ModeDir,
0, nil},
{"a/a/a",
0,
0, nil},
{"a/a/f",
0,
0, nil},
{"b", os.ModeDir,
0, nil},
{"b/a", os.ModeDir,
0, nil},
{"b/a/a",
0,
0, nil},
{"b/a/f",
0,
0, nil},
{"c", os.ModeDir,
0, nil},
{"c/a",
0,
0, nil},
{"c/f",
0,
0, nil},
{"d/a",
0,
0, nil},
{"d/f",
0,
0, nil},
{"e",
0,
0, nil},
{"f",
0,
0, nil},
{"dangling",
0,
0, os.ErrNotExist},
{"a/missing",
0,
0, os.ErrNotExist},
{"b/missing",
0,
0, os.ErrNotExist},
{"c/missing",
0,
0, os.ErrNotExist},
{"d/missing",
0,
0, os.ErrNotExist},
{"e/missing",
0,
0, os.ErrNotExist},
{"dangling/missing",
0,
0, os.ErrNotExist},
{"a/missing/missing",
0,
0, os.ErrNotExist},
{"b/missing/missing",
0,
0, os.ErrNotExist},
{"c/missing/missing",
0,
0, os.ErrNotExist},
{"d/missing/missing",
0,
0, os.ErrNotExist},
{"e/missing/missing",
0,
0, os.ErrNotExist},
{"dangling/missing/missing",
0,
0, os.ErrNotExist},
}
runTestFs(t, func(t *testing.T, fs FileSystem, dir string) {
for _, test := range testCases {
t.Run(test.name, func(t *testing.T) {
got, err := fs.Stat(filepath.Join(dir, test.name))
checkErr(t, test.err, err)
if err != nil {
return
}
if got.Mode()&os.ModeType != test.mode {
t.Errorf("fs.Stat(%q).Mode()&os.ModeType want: %x, got %x",
test.name, test.mode, got.Mode()&os.ModeType)
}
if test.mode ==
0 && got.Size() != test.size {
t.Errorf("fs.Stat(%q).Size() want: %d, got %d", test.name, test.size, got.Size())
}
})
}
})
}
func TestMockFs_glob(t *testing.T) {
testCases := []struct {
pattern string
files []string
}{
{"*", []string{"a", "b", "c", "d", "dangling", "e", "f"}},
{"./*", []string{"a", "b", "c", "d", "dangling", "e", "f"}},
{"a", []string{"a"}},
{"a/a", []string{"a/a"}},
{"a/*", []string{"a/a"}},
{"a/a/a", []string{"a/a/a"}},
{"a/a/f", []string{"a/a/f"}},
{"a/a/*", []string{"a/a/a", "a/a/f"}},
{"b", []string{"b"}},
{"b/a", []string{"b/a"}},
{"b/*", []string{"b/a"}},
{"b/a/a", []string{"b/a/a"}},
{"b/a/f", []string{"b/a/f"}},
{"b/a/*", []string{"b/a/a", "b/a/f"}},
{"c", []string{"c"}},
{"c/a", []string{"c/a"}},
{"c/f", []string{"c/f"}},
{"c/*", []string{"c/a", "c/f"}},
{"d", []string{"d"}},
{"d/a", []string{"d/a"}},
{"d/f", []string{"d/f"}},
{"d/*", []string{"d/a", "d/f"}},
{"e", []string{"e"}},
{"dangling", []string{"dangling"}},
{"missing", nil},
}
runTestFs(t, func(t *testing.T, fs FileSystem, dir string) {
for _, test := range testCases {
t.Run(test.pattern, func(t *testing.T) {
got, err := fs.glob(test.pattern)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(got, test.files) {
t.Errorf("want: %v, got %v", test.files, got)
}
})
}
})
}
func TestMockFs_Remove(t *testing.T) {
testCases := []struct {
nameToRemove string
initialState map[string][]byte
filesExpected map[string][]byte
symlinksExpected map[string]string
dirsExpected map[string]bool
description string
}{
// File Removal Cases
{
nameToRemove: "a/c",
initialState: map[string][]byte{
"a/b": nil,
"a/c": nil,
},
filesExpected: map[string][]byte{
"a/b": nil,
},
symlinksExpected: map[string]string{},
dirsExpected: map[string]bool{
"a": true,
".": true,
"/": true,
},
description: "Remove a file from an existing directory.",
},
{
nameToRemove: "a/b",
initialState: map[string][]byte{
"a/b": nil,
},
filesExpected: map[string][]byte{},
symlinksExpected: map[string]string{},
dirsExpected: map[string]bool{
"a": true,
".": true,
"/": true,
},
description: "Remove the only file from a directory.",
},
{
nameToRemove: "non-existent-file",
initialState: map[string][]byte{
"a/b": nil,
},
filesExpected: map[string][]byte{
"a/b": nil,
},
symlinksExpected: map[string]string{},
dirsExpected: map[string]bool{
"a": true,
".": true,
"/": true,
},
description: "Remove a file that doesn't exist.",
},
// Directory Removal Cases
{
nameToRemove: "d",
initialState: map[string][]byte{
"d/e/f": nil,
"d/g": nil,
},
filesExpected: map[string][]byte{},
symlinksExpected: map[string]string{},
dirsExpected: map[string]bool{
".": true,
"/": true,
},
description: "Remove a non-empty directory and its contents.",
},
{
nameToRemove: "empty_dir",
initialState: map[string][]byte{
"file1": nil,
},
filesExpected: map[string][]byte{
"file1": nil,
},
symlinksExpected: map[string]string{},
dirsExpected: map[string]bool{
".": true,
"/": true,
},
description: "Remove an empty directory (implicitly created).",
},
{
nameToRemove: "non-existent-dir",
initialState: map[string][]byte{
"file1": nil,
},
filesExpected: map[string][]byte{
"file1": nil,
},
symlinksExpected: map[string]string{},
dirsExpected: map[string]bool{
".": true,
"/": true,
},
description: "Remove a directory that doesn't exist.",
},
{
nameToRemove: "root/dir",
initialState: map[string][]byte{
"root/dir/file1": nil,
"root/dir/subdir/file2": nil,
},
filesExpected: map[string][]byte{},
symlinksExpected: map[string]string{},
dirsExpected: map[string]bool{
"root": true,
".": true,
"/": true,
},
description: "Remove a directory with nested files and subdirectories.",
},
// Symlink Removal Cases
{
nameToRemove: "link_to_file",
initialState: map[string][]byte{
"target_file": nil,
"link_to_file -> target_file": nil,
},
filesExpected: map[string][]byte{
"target_file": nil,
},
symlinksExpected: map[string]string{},
dirsExpected: map[string]bool{
".": true,
"/": true,
},
description: "Remove a symlink to a file.",
},
{
nameToRemove: "link_to_dir",
initialState: map[string][]byte{
"target_dir/file": nil,
"link_to_dir -> target_dir": nil,
},
filesExpected: map[string][]byte{
"target_dir/file": nil,
},
symlinksExpected: map[string]string{},
dirsExpected: map[string]bool{
"target_dir": true,
".": true,
"/": true,
},
description: "Remove a symlink to a directory.",
},
}
for _, test := range testCases {
t.Run(test.description, func(t *testing.T) {
mock := MockFs(test.initialState).(*mockFs)
mock.Remove(test.nameToRemove)
if !reflect.DeepEqual(mock.files, test.filesExpected) {
t.Errorf("files: want %v, got %v", test.filesExpected, mock.files)
}
if !reflect.DeepEqual(mock.symlinks, test.symlinksExpected) {
t.Errorf("symlinks: want %v, got %v", test.symlinksExpected, mock.symlinks)
}
if !reflect.DeepEqual(mock.dirs, test.dirsExpected) {
t.Errorf("dirs: want %v, got %v", test.dirsExpected, mock.dirs)
}
})
}
}
func TestFsTruncate(t *testing.T) {
type testCase struct {
name string
content string
size int64
expected string
err error
}
testCases := []testCase{
{"grow", "abc",
6, "abc\x00\x00\x00", nil},
{"shrink", "abc",
2, "ab", nil},
{"same size", "abc",
3, "abc", nil},
{"zero", "abc",
0, "", nil},
{"from zero", "",
0, "", nil},
{"negative", "", -
1, "", os.ErrInvalid},
}
run := func(t *testing.T, fs FileSystem, test testCase) {
path := "TestFsTruncate_" + test.name
f, err := fs.OpenFile(path, os.O_CREATE|os.O_WRONLY,
0666)
if err != nil {
t.Fatalf("fs.OpenFile: %v", err)
}
defer f.Close()
_, err = f.Write([]byte(test.content))
if err != nil {
t.Fatalf("Write: %v", err)
}
err = f.Truncate(test.size)
checkErr(t, test.err, err)
if err != nil {
return
}
f.Close()
got, err := readFile(fs, path)
if err != nil {
t.Fatalf("readFile: %v", err)
}
if got != test.expected {
t.Errorf("expected %q got %q", test.expected, got)
}
}
for _, test := range testCases {
t.Run(test.name, func(t *testing.T) {
t.Run("mock", func(t *testing.T) {
run(t, MockFs(nil), test)
})
t.Run("os", func(t *testing.T) {
run(t, NewOsFs(os.TempDir()), test)
})
})
}
}
func readFile(fs FileSystem, path string) (string, error) {
r, err := fs.Open(path)
if err != nil {
return "", fmt.Errorf("fs.Open: %w", err)
}
defer r.Close()
content, err := io.ReadAll(r)
if err != nil {
return "", fmt.Errorf("io.ReadAll: %w", err)
}
return string(content), nil
}
func syscallError(err error) error {
if serr, ok := err.(*os.SyscallError); ok {
return serr.Err.(syscall.Errno)
} else if serr, ok := err.(syscall.Errno); ok {
return serr
} else {
return nil
}
}
func checkErr(t *testing.T, want, got error) {
t.Helper()
if (got != nil) != (want != nil) {
t.Fatalf("want: %v, got %v", want, got)
}
if os.IsNotExist(got) == os.IsNotExist(want) {
return
}
if syscallError(got) == syscallError(want) {
return
}
t.Fatalf("want: %v, got %v", want, got)
}