More fixes to unittest

pkg/unittest/test/matchers_test.dart

 // Copyright (c) 2012, 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 unittestTests;
 import 'package:unittest/unittest.dart';
+import 'dart:async';
 part 'test_utils.dart';
 
 doesNotThrow() {}
 doesThrow() { throw 'X'; }
 
 class PrefixMatcher extends BaseMatcher {
   final String _prefix;
   const PrefixMatcher(this._prefix);
   bool matches(item, MatchState matchState) {
     return item is String &&
@@ skipping 490 matching lines @@
     });
 
     test('allOf', () {
       shouldPass(1, allOf([lessThan(10), greaterThan(0)]));
       shouldFail(-1, allOf([lessThan(10), greaterThan(0)]),
           "Expected: (a value less than <10> and a value greater than <0>) "
           "but: a value greater than <0> was <-1>.");
     });
   });
 
+  group('Future Matchers', () {
+
+    test('completes - unexpected error', () {
+      var completer = new Completer();
+      completer.completeError('X');
+      shouldFail(completer.future, completes,
+          contains('Expected future to complete successfully, '
+                   'but it failed with X'),
+          isAsync: true);
+    });
+
+    test('completes - successfully', () {
+      var completer = new Completer();
+      completer.complete('1');
+      shouldPass(completer.future, completes, isAsync: true);
+    });
+
+    test('throws - unexpected to see normal completion', () {
+      var completer = new Completer();
+      completer.complete('1');
+      shouldFail(completer.future, throws,
+        contains("Expected future to fail, but succeeded with '1'"),
+        isAsync: true);
+    });
+
+    test('throws - expected to see exception', () {
+      var completer = new Completer();
+      completer.completeError('X');
+      shouldPass(completer.future, throws, isAsync: true);
+    });
+
+    test('throws - expected to see exception thrown later on', () {
+      var completer = new Completer();
+      var chained = completer.future.then((_) { throw 'X'; });
+      shouldPass(chained, throws, isAsync: true);
+      completer.complete('1');
+    });
+
+    test('throwsA - unexpected normal completion', () {
+      var completer = new Completer();
+      completer.complete('1');
+      shouldFail(completer.future, throwsA(equals('X')),
+        contains("Expected future to fail, but succeeded with '1'"),
+        isAsync: true);
+    });
+
+    test('throwsA - correct error', () {
+      var completer = new Completer();
+      completer.completeError('X');
+      shouldPass(completer.future, throwsA(equals('X')), isAsync: true);
+    });
+
+    test('throwsA - wrong error', () {
+      var completer = new Completer();
+      completer.completeError('X');
+      shouldFail(completer.future, throwsA(equals('Y')),
+          "Expected: 'Y' but: was 'X'.",
+          isAsync: true);
+    });
+  });
+
   group('Predicate Matchers', () {
     test('isInstanceOf', () {
       shouldFail(0, predicate((x) => x is String, "an instance of String"),
           "Expected: an instance of String but: was <0>.");
       shouldPass('cow', predicate((x) => x is String, "an instance of String"));
     });
   });
 
   group('Feature Matchers', () {
     test("Feature Matcher", () {
       var w = new Widget();
       w.price = 10;
       shouldPass(w, new HasPrice(greaterThan(0)));
       shouldFail(w, new HasPrice(greaterThan(10)),
           'Expected: Widget with a price that is a value greater than <10> '
           'but: price was <10>.');
     });
   });
 }