117 lines
3.0 KiB
Go
117 lines
3.0 KiB
Go
// Copyright (C) 2016 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package osutil_test
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import (
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"os"
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"path/filepath"
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"runtime"
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"testing"
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"github.com/syncthing/syncthing/lib/fs"
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"github.com/syncthing/syncthing/lib/osutil"
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)
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func TestTraversesSymlink(t *testing.T) {
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tmpDir, err := os.MkdirTemp(".", ".test-TraversesSymlink-")
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if err != nil {
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panic("Failed to create temporary testing dir")
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}
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defer os.RemoveAll(tmpDir)
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testFs := fs.NewFilesystem(fs.FilesystemTypeBasic, tmpDir)
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testFs.MkdirAll("a/b/c", 0755)
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if err = fs.DebugSymlinkForTestsOnly(testFs, testFs, filepath.Join("a", "b"), filepath.Join("a", "l")); err != nil {
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if runtime.GOOS == "windows" {
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t.Skip("Symlinks aren't working")
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}
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t.Fatal(err)
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}
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// a/l -> b, so a/l/c should resolve by normal stat
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info, err := testFs.Lstat("a/l/c")
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if err != nil {
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t.Fatal("unexpected error", err)
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}
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if !info.IsDir() {
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t.Fatal("error in setup, a/l/c should be a directory")
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}
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cases := []struct {
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name string
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traverses bool
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}{
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// Exist
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{".", false},
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{"a", false},
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{"a/b", false},
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{"a/b/c", false},
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// Don't exist
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{"x", false},
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{"a/x", false},
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{"a/b/x", false},
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{"a/x/c", false},
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// Symlink or behind symlink
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{"a/l", true},
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{"a/l/c", true},
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// Non-existing behind a symlink
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{"a/l/x", true},
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}
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for _, tc := range cases {
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if res := osutil.TraversesSymlink(testFs, tc.name); tc.traverses == (res == nil) {
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t.Errorf("TraversesSymlink(%q) = %v, should be %v", tc.name, res, tc.traverses)
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}
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}
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}
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func TestIssue4875(t *testing.T) {
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tmpDir, err := os.MkdirTemp("", ".test-Issue4875-")
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if err != nil {
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panic("Failed to create temporary testing dir")
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}
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defer os.RemoveAll(tmpDir)
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testFs := fs.NewFilesystem(fs.FilesystemTypeBasic, tmpDir)
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testFs.MkdirAll(filepath.Join("a", "b", "c"), 0755)
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if err = fs.DebugSymlinkForTestsOnly(testFs, testFs, filepath.Join("a", "b"), filepath.Join("a", "l")); err != nil {
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if runtime.GOOS == "windows" {
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t.Skip("Symlinks aren't working")
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}
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t.Fatal(err)
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}
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// a/l -> b, so a/l/c should resolve by normal stat
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info, err := testFs.Lstat("a/l/c")
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if err != nil {
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t.Fatal("unexpected error", err)
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}
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if !info.IsDir() {
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t.Fatal("error in setup, a/l/c should be a directory")
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}
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testFs = fs.NewFilesystem(fs.FilesystemTypeBasic, filepath.Join(tmpDir, "a/l"))
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if err := osutil.TraversesSymlink(testFs, "."); err != nil {
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t.Error(`TraversesSymlink on filesystem with symlink at root returned error for ".":`, err)
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}
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}
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var traversesSymlinkResult error
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func BenchmarkTraversesSymlink(b *testing.B) {
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os.RemoveAll("testdata")
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defer os.RemoveAll("testdata")
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fs := fs.NewFilesystem(fs.FilesystemTypeBasic, "testdata")
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fs.MkdirAll("a/b/c", 0755)
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for i := 0; i < b.N; i++ {
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traversesSymlinkResult = osutil.TraversesSymlink(fs, "a/b/c")
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}
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b.ReportAllocs()
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}
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