Ensure that failure to start an isolate all end up in the future.

tests/isolate/isolate_create_error_test.dart

+// Copyright (c) 2014, 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.
+
+library isolate.create.error;
+
+import "dart:async";
+import "dart:isolate";
+import "package:expect/expect.dart";
+import "package:async_helper/async_helper.dart";
+
+void main() {
+  asyncStart();
+  isolateBadUriScheme();     /// 01: ok
+  isolateBadServerUri();     /// 02: ok
+  isolate404Uri();           /// 03: ok
+  isolateMissingFileUri();   /// 04: ok
+  isolateBadParse();         /// 05: ok
+  isolateNoMain();           /// 06: ok
+  isolateBadMain();          /// 07: ok
+  isolateBoolMain();         /// 08: ok
+  isolateFuncGetMain();      /// 09: ok
+  isolateFuncConstMain();    /// 10: ok
+  asyncEnd();
+}
+
+badSuccess(x) {
+  print("Unexpected non-error: $x");
+}
+
+void isolateBadUriScheme() {
+  asyncStart();
+  Future<Isolate> result = Isolate.spawnUri(
+      Uri.parse("wtf://example.com/NOT"), ["A"], null);
+  result.then(badSuccess, onError: (IsolateSpawnException e) {

[Søren Gjesse, 2014/05/28 12:00:42]

Add an expectation for e instead of print (in all tests)?

+    print("A: $e");
+    asyncEnd();
+  });
+}
+
+void isolateBadServerUri() {
+  asyncStart();
+  Future<Isolate> result = Isolate.spawnUri(
+      Uri.parse("http://nosuchserver-dartlang.org/index.html"), ["B"], null);
+  result.then(badSuccess, onError: (IsolateSpawnException e) {
+    print("B: $e");
+    asyncEnd();
+  });
+}
+
+void isolate404Uri() {
+  asyncStart();
+  Future<Isolate> result = Isolate.spawnUri(
+      Uri.parse("http://dartlang.org/THISPAGENOTFOUND"), ["C"], null);
+  result.then(badSuccess, onError: (IsolateSpawnException e) {
+    print("C: $e");
+    asyncEnd();
+  });
+}
+
+void isolateMissingFileUri() {
+  asyncStart();
+  Future<Isolate> result = Isolate.spawnUri(
+      Uri.parse("./THISFILENOTFOUND"), ["D"], null);
+  result.then(badSuccess, onError: (IsolateSpawnException e) {
+    print("D: $e");
+    asyncEnd();
+  });
+}
+
+void isolateBadParse() {
+  asyncStart();
+  Future<Isolate> result = Isolate.spawnUri(
+      Uri.parse("./isolate_create_error_helper_syntax_error.dart"),
+                ["E"], null);
+  result.then(badSuccess, onError: (IsolateSpawnException e) {
+    print("E: $e");
+    asyncEnd();
+  });
+}
+
+void isolateNoMain() {
+  asyncStart();
+  Future<Isolate> result = Isolate.spawnUri(
+      Uri.parse("./isolate_create_error_helper_lib.dart"), ["F"], null);
+  result.then(badSuccess, onError: (IsolateSpawnException e) {
+    print("F: $e");
+    asyncEnd();
+  });
+}
+
+void isolateBadMain() {
+  // Spawned library has a main method expecting three arguments.
+  asyncStart();
+  Future<Isolate> result = Isolate.spawnUri(
+      Uri.parse("./isolate_create_error_helper_lib2.dart"), ["G"], null);
+  result.then(badSuccess, onError: (IsolateSpawnException e) {
+    print("G: $e");
+    asyncEnd();
+  });
+}
+
+void isolateBoolMain() {
+  // Spawned library has a bool main field.
+  asyncStart();
+  Future<Isolate> result = Isolate.spawnUri(
+      Uri.parse("./isolate_create_error_helper_lib3.dart"), ["H"], null);
+  result.then(badSuccess, onError: (IsolateSpawnException e) {
+    print("H: $e");
+    asyncEnd();
+  });
+}
+
+void isolateFuncGetMain() {
+  // Spawned library has a lazy final main field with a function type.
+  asyncStart();
+  Future<Isolate> result = Isolate.spawnUri(
+      Uri.parse("./isolate_create_error_helper_lib4.dart"), ["I"], null);
+  result.then(badSuccess, onError: (IsolateSpawnException e) {
+    print("I: $e");
+    asyncEnd();
+  });
+}
+
+void isolateFuncConstMain() {
+  // Spawned library has a const main field with a function type.
+  asyncStart();
+  Future<Isolate> result = Isolate.spawnUri(
+      Uri.parse("./isolate_create_error_helper_lib5.dart"), ["J"], null);
+  result.then(badSuccess, onError: (IsolateSpawnException e) {
+    print("J: $e");
+    asyncEnd();
+  });
+}
+
+