Change how File/Directory/Link .delete works.

tests/standalone/io/file_system_exists_test.dart

Index: tests/standalone/io/file_system_exists_test.dart
diff --git a/tests/standalone/io/file_system_exists_test.dart b/tests/standalone/io/file_system_exists_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..14bd71a2da22ca100dd6955cff757ca240e84dd2
--- /dev/null
+++ b/tests/standalone/io/file_system_exists_test.dart
@@ -0,0 +1,204 @@
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import "dart:io";
+
+void testFileExistsSync() {
+  var tmp = new Directory("").createTempSync();
+  var path = "${tmp.path}${Platform.pathSeparator}";
+
+  var file = new File("${path}myFile");
+  file.createSync();
+
+  Expect.isTrue(new File(file.path).existsSync());
+  Expect.isFalse(new Directory(file.path).existsSync());
+  Expect.isFalse(new Link(file.path).existsSync());
+
+  file.deleteSync();
+  Expect.isFalse(file.existsSync());
+
+  tmp.deleteSync();
+}
+
+void testFileExists() {
+  new Directory("").createTemp().then((tmp) {
+    var path = "${tmp.path}${Platform.pathSeparator}";
+    var file = new File("${path}myFile");
+    return file.create()
+      .then((_) => new File(file.path).exists().then(Expect.isTrue))
+      .then((_) => new Directory(file.path).exists().then(Expect.isFalse))
+      .then((_) => new Link(file.path).exists().then(Expect.isFalse))
+
+      .then((_) => file.delete())
+      .then((_) => tmp.delete());
+  });
+}
+
+void testDirectoryExistsSync() {
+  var tmp = new Directory("").createTempSync();
+  var path = "${tmp.path}${Platform.pathSeparator}";
+
+  var dir = new Directory("${path}myDirectory");
+  dir.createSync();
+
+  Expect.isFalse(new File(dir.path).existsSync());
+  Expect.isTrue(new Directory(dir.path).existsSync());
+  Expect.isFalse(new Link(dir.path).existsSync());
+
+  dir.deleteSync();
+  Expect.isFalse(dir.existsSync());
+
+  tmp.deleteSync();
+}
+
+void testDirectoryExists() {
+  new Directory("").createTemp().then((tmp) {
+    var path = "${tmp.path}${Platform.pathSeparator}";
+    var dir = new Directory("${path}myDirectory");
+    return dir.create()
+      .then((_) => new File(dir.path).exists().then(Expect.isFalse))
+      .then((_) => new Directory(dir.path).exists().then(Expect.isTrue))
+      .then((_) => new Link(dir.path).exists().then(Expect.isFalse))
+
+      .then((_) => dir.delete())
+      .then((_) => tmp.delete());
+  });
+}
+
+void testFileLinkExistsSync() {
+  var tmp = new Directory("").createTempSync();
+  var path = "${tmp.path}${Platform.pathSeparator}";
+
+  var file = new File("${path}myFile");
+  file.createSync();
+
+  var link = new Link("${path}myLink");
+  link.createSync(file.path);
+
+  Expect.isTrue(new File(link.path).existsSync());
+  Expect.isFalse(new Directory(link.path).existsSync());
+  Expect.isTrue(new Link(link.path).existsSync());
+
+  link.deleteSync();
+  Expect.isFalse(link.existsSync());
+
+  file.deleteSync();
+  Expect.isFalse(file.existsSync());
+
+  tmp.deleteSync();
+}
+
+void testFileLinkExists() {
+  new Directory("").createTemp().then((tmp) {
+    var path = "${tmp.path}${Platform.pathSeparator}";
+    var file = new File("${path}myFile");
+    var link = new Link("${path}myLink");
+    return file.create()
+      .then((_) => link.create(file.path))
+
+      .then((_) => new File(link.path).exists().then(Expect.isTrue))
+      .then((_) => new Directory(link.path).exists().then(Expect.isFalse))
+      .then((_) => new Link(link.path).exists().then(Expect.isTrue))
+
+      .then((_) => link.delete())
+      .then((_) => file.delete())
+      .then((_) => tmp.delete());
+  });
+}
+
+void testDirectoryLinkExistsSync() {
+  var tmp = new Directory("").createTempSync();
+  var path = "${tmp.path}${Platform.pathSeparator}";
+
+  var directory = new Directory("${path}myDirectory");
+  directory.createSync();
+
+  var link = new Link("${path}myLink");
+  link.createSync(directory.path);
+
+  Expect.isFalse(new File(link.path).existsSync());
+  Expect.isTrue(new Directory(link.path).existsSync());
+  Expect.isTrue(new Link(link.path).existsSync());
+
+  link.deleteSync();
+  Expect.isFalse(link.existsSync());
+
+  directory.deleteSync();
+  Expect.isFalse(directory.existsSync());
+
+  tmp.deleteSync();
+}
+
+void testDirectoryLinkExists() {
+  new Directory("").createTemp().then((tmp) {
+    var path = "${tmp.path}${Platform.pathSeparator}";
+    var dir = new Directory("${path}myDir");
+    var link = new Link("${path}myLink");
+    return dir.create()
+      .then((_) => link.create(dir.path))
+
+      .then((_) => new File(link.path).exists().then(Expect.isFalse))
+      .then((_) => new Directory(link.path).exists().then(Expect.isTrue))
+      .then((_) => new Link(link.path).exists().then(Expect.isTrue))
+
+      .then((_) => link.delete())
+      .then((_) => dir.delete())
+      .then((_) => tmp.delete());
+  });
+}
+
+void testBrokenLinkExistsSync() {
+  var tmp = new Directory("").createTempSync();
+  var path = "${tmp.path}${Platform.pathSeparator}";
+
+  var directory = new Directory("${path}myDirectory");
+  directory.createSync();
+
+  var link = new Link("${path}myLink");
+  link.createSync(directory.path);
+  directory.deleteSync();
+
+  Expect.isFalse(new File(link.path).existsSync());
+  Expect.isFalse(new Directory(link.path).existsSync());
+  Expect.isTrue(new Link(link.path).existsSync());
+
+  link.deleteSync();
+  Expect.isFalse(link.existsSync());
+
+  tmp.deleteSync();
+}
+
+void testBrokenLinkExists() {
+  new Directory("").createTemp().then((tmp) {
+    var path = "${tmp.path}${Platform.pathSeparator}";
+    var dir = new Directory("${path}myDir");
+    var link = new Link("${path}myLink");
+    return dir.create()
+      .then((_) => link.create(dir.path))
+      .then((_) => dir.delete())
+
+      .then((_) => new File(link.path).exists().then(Expect.isFalse))
+      .then((_) => new Directory(link.path).exists().then(Expect.isFalse))
+      .then((_) => new Link(link.path).exists().then(Expect.isTrue))
+
+      .then((_) => link.delete())
+      .then((_) => tmp.delete());
+  });
+}
+
+void main() {
+  testFileExistsSync();
+  testFileExists();
+  testDirectoryExistsSync();
+  testDirectoryExists();
+  if (Platform.operatingSystem != 'windows') {
+    testFileLinkExistsSync();
+    testFileLinkExists();
+  }
+  testDirectoryLinkExistsSync();
+  testDirectoryLinkExists();
+  testBrokenLinkExistsSync();
+  testBrokenLinkExists();
+}
+