Make dart2js unittests async.

tests/compiler/dart2js/boolified_operator_test.dart

Index: tests/compiler/dart2js/boolified_operator_test.dart
diff --git a/tests/compiler/dart2js/boolified_operator_test.dart b/tests/compiler/dart2js/boolified_operator_test.dart
index 5ec4c83d3b4b08adca817216da8a9f8f9f3aca92..6a8bd9fdf60abd006e599fa39b654f66616e3c82 100644
--- a/tests/compiler/dart2js/boolified_operator_test.dart
+++ b/tests/compiler/dart2js/boolified_operator_test.dart
@@ -3,7 +3,10 @@
 // BSD-style license that can be found in the LICENSE file.
 
 library boolified_operator_test;
-import "package:expect/expect.dart";
+
+import 'dart:async';
+import 'package:expect/expect.dart';
+import 'package:async_helper/async_helper.dart';
 import 'compiler_helper.dart';
 
 const String TEST_EQUAL = r"""
@@ -50,27 +53,30 @@ foo(param0, param1) {
 main() {
   RegExp regexp = new RegExp('=== true');
 
-  String generated = compile(TEST_EQUAL, entry: 'foo');
-  Expect.isFalse(generated.contains('=== true'));
-  Expect.isTrue(generated.contains('eqB'));
-
-  generated = compile(TEST_EQUAL_NULL, entry: 'foo');
-  Expect.isFalse(generated.contains('=== true'));
-  Expect.isTrue(generated.contains('== null'));
-
-  generated = compile(TEST_LESS, entry: 'foo');
-  Expect.isFalse(generated.contains('=== true'));
-  Expect.isTrue(generated.contains('ltB'));
-
-  generated = compile(TEST_LESS_EQUAL, entry: 'foo');
-  Expect.isFalse(generated.contains('=== true'));
-  Expect.isTrue(generated.contains('leB'));
-  
-  generated = compile(TEST_GREATER, entry: 'foo');
-  Expect.isFalse(generated.contains('=== true'));
-  Expect.isTrue(generated.contains('gtB'));
-  
-  generated = compile(TEST_GREATER_EQUAL, entry: 'foo');
-  Expect.isFalse(generated.contains('=== true'));
-  Expect.isTrue(generated.contains('geB'));
+  asyncTest(() => Future.wait([
+    compile(TEST_EQUAL, entry: 'foo', check: (String generated) {
+      Expect.isFalse(generated.contains('=== true'));
+      Expect.isTrue(generated.contains('eqB'));
+    }),
+    compile(TEST_EQUAL_NULL, entry: 'foo', check: (String generated) {
+      Expect.isFalse(generated.contains('=== true'));
+      Expect.isTrue(generated.contains('== null'));
+    }),
+    compile(TEST_LESS, entry: 'foo', check: (String generated) {
+      Expect.isFalse(generated.contains('=== true'));
+      Expect.isTrue(generated.contains('ltB'));
+    }),
+    compile(TEST_LESS_EQUAL, entry: 'foo', check: (String generated) {
+      Expect.isFalse(generated.contains('=== true'));
+      Expect.isTrue(generated.contains('leB'));
+    }),
+    compile(TEST_GREATER, entry: 'foo', check: (String generated) {
+      Expect.isFalse(generated.contains('=== true'));
+      Expect.isTrue(generated.contains('gtB'));
+    }),
+    compile(TEST_GREATER_EQUAL, entry: 'foo', check: (String generated) {
+      Expect.isFalse(generated.contains('=== true'));
+      Expect.isTrue(generated.contains('geB'));
+    }),
+  ]));
 }