mirror of https://github.com/spf13/afero.git
103 lines
3.0 KiB
Go
103 lines
3.0 KiB
Go
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// Copyright ©2018 Steve Francia <spf@spf13.com>
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package afero
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import (
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"os"
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"path/filepath"
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"testing"
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)
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func TestLstatIfPossible(t *testing.T) {
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wd, _ := os.Getwd()
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defer func() {
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os.Chdir(wd)
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}()
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osFs := &OsFs{}
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workDir, err := TempDir(osFs, "", "afero-lstate")
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if err != nil {
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t.Fatal(err)
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}
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defer func() {
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osFs.RemoveAll(workDir)
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}()
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memWorkDir := "/lstate"
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memFs := NewMemMapFs()
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overlayFs1 := &CopyOnWriteFs{base: osFs, layer: memFs}
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overlayFs2 := &CopyOnWriteFs{base: memFs, layer: osFs}
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overlayFsMemOnly := &CopyOnWriteFs{base: memFs, layer: NewMemMapFs()}
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basePathFs := &BasePathFs{source: osFs, path: workDir}
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basePathFsMem := &BasePathFs{source: memFs, path: memWorkDir}
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roFs := &ReadOnlyFs{source: osFs}
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roFsMem := &ReadOnlyFs{source: memFs}
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pathFileMem := filepath.Join(memWorkDir, "aferom.txt")
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WriteFile(osFs, filepath.Join(workDir, "afero.txt"), []byte("Hi, Afero!"), 0777)
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WriteFile(memFs, filepath.Join(pathFileMem), []byte("Hi, Afero!"), 0777)
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os.Chdir(workDir)
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if err := os.Symlink("afero.txt", "symafero.txt"); err != nil {
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t.Fatal(err)
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}
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pathFile := filepath.Join(workDir, "afero.txt")
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pathSymlink := filepath.Join(workDir, "symafero.txt")
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checkLstat := func(l Lstater, name string, shouldLstat bool) os.FileInfo {
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statFile, isLstat, err := l.LstatIfPossible(name)
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if err != nil {
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t.Fatalf("Lstat check failed: %s", err)
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}
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if isLstat != shouldLstat {
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t.Fatalf("Lstat status was %t for %s", isLstat, name)
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}
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return statFile
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}
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testLstat := func(l Lstater, pathFile, pathSymlink string) {
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shouldLstat := pathSymlink != ""
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statRegular := checkLstat(l, pathFile, shouldLstat)
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statSymlink := checkLstat(l, pathSymlink, shouldLstat)
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if statRegular == nil || statSymlink == nil {
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t.Fatal("got nil FileInfo")
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}
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symSym := statSymlink.Mode()&os.ModeSymlink == os.ModeSymlink
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if symSym == (pathSymlink == "") {
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t.Fatal("expected the FileInfo to describe the symlink")
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}
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_, _, err := l.LstatIfPossible("this-should-not-exist.txt")
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if err == nil || !os.IsNotExist(err) {
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t.Fatalf("expected file to not exist, got %s", err)
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}
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}
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testLstat(osFs, pathFile, pathSymlink)
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testLstat(overlayFs1, pathFile, pathSymlink)
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testLstat(overlayFs2, pathFile, pathSymlink)
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testLstat(basePathFs, "afero.txt", "symafero.txt")
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testLstat(overlayFsMemOnly, pathFileMem, "")
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testLstat(basePathFsMem, "aferom.txt", "")
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testLstat(roFs, pathFile, pathSymlink)
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testLstat(roFsMem, pathFileMem, "")
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}
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