More test fixes.

tests/compiler/dart2js_extra/deferred/deferred_function_test.dart

Index: tests/compiler/dart2js_extra/deferred/deferred_function_test.dart
diff --git a/tests/compiler/dart2js_extra/deferred/deferred_function_test.dart b/tests/compiler/dart2js_extra/deferred/deferred_function_test.dart
index 08eb6ac2ce8013e15aa957e79e02cb4563b46634..4c4cf8197a5947c1fae16b8ba0a1b2d492aee051 100644
--- a/tests/compiler/dart2js_extra/deferred/deferred_function_test.dart
+++ b/tests/compiler/dart2js_extra/deferred/deferred_function_test.dart
@@ -12,6 +12,24 @@ const lazy = const DeferredLibrary('deferred_function_library');
 
 isNoSuchMethodError(e) => e is NoSuchMethodError;
 
+class Expect {
+  static void isTrue(x) => expect.equals(true, x);
+  static void equals(expected, actual) {
+    if (expected != actual) {
+      throw "Not equal. Expected: $expected. Got: $actual";
+    }
+  }
+  static void throws(fun, [test]) {
+    try {
+      fun();
+    } catch (e) {
+      if (!test(e)) throw "doesn't satisfy exception test";
+      return;
+    }
+    throw "didn't throw";
+  }
+}
+
 main() {
   print('unittest-suite-wait-for-done');