Add symlink support to mockFs
Add support for specifying symlinks in mock filesystems to prepare
for glob symlink tests.
This patch leaves incorrect behavior by not walking symlinks in
mockFs.ListDirsRecursive, but it matches what osFs does.
Test: fs_test.go
Change-Id: If87a83c00f21e14696faf890b7b09e88b18e95b9
diff --git a/pathtools/fs_test.go b/pathtools/fs_test.go
new file mode 100644
index 0000000..0a82ed0
--- /dev/null
+++ b/pathtools/fs_test.go
@@ -0,0 +1,217 @@
+// 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 (
+ "os"
+ "path/filepath"
+ "reflect"
+ "syscall"
+ "testing"
+)
+
+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"},
+ {"c/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 TestMockFs_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, os.NewSyscallError("stat e/missing", 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, os.NewSyscallError("stat e/missing/missing", syscall.ENOTDIR)},
+ {"dangling/missing/missing", false, os.ErrNotExist},
+
+ {"c/f/missing", false, os.NewSyscallError("stat c/f/missing", syscall.ENOTDIR)},
+ }
+
+ mock := symlinkMockFs()
+
+ for _, test := range testCases {
+ t.Run(test.name, func(t *testing.T) {
+ got, err := mock.IsDir(test.name)
+ if !reflect.DeepEqual(err, test.err) {
+ t.Errorf("want: %v, got %v", test.err, err)
+ }
+ if got != test.isDir {
+ t.Errorf("want: %v, got %v", test.isDir, got)
+ }
+ })
+ }
+}
+
+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},
+ }
+
+ mock := symlinkMockFs()
+
+ for _, test := range testCases {
+ t.Run(test.pattern, func(t *testing.T) {
+ got, err := mock.glob(test.pattern)
+ if err != nil {
+ t.Fatal(err)
+ }
+ if !reflect.DeepEqual(got, test.files) {
+ t.Errorf("want: %v, got %v", test.files, got)
+ }
+ })
+ }
+}