Fix hanging FakeAsync test.

Author: cbracken

CHANGELOG.md

@@ -1,3 +1,6 @@
+#### 0.21.0+2
+   * Fix hanging `FakeAsync` unit test.
+
 #### 0.21.0+1
    * Replace `equalsTester` dependency on `unittest` with finer-grained
      dependency on `matcher`.

pubspec.yaml

@@ -1,5 +1,5 @@
 name: quiver
-version: 0.21.0+1
+version: 0.21.0+2
 authors:
 - Justin Fagnani <[email protected]>
 - Yegor Jbanov <[email protected]>

test/testing/async/fake_async_test.dart

@@ -33,9 +33,10 @@ main() {
 
       test('should elapse time without calling timers', () {
         var timerCalled = false;
-        new Timer(elapseBy ~/ 2, () => timerCalled = true);
+        var timer = new Timer(elapseBy ~/ 2, () => timerCalled = true);
         new FakeAsync().elapseBlocking(elapseBy);
         expect(timerCalled, isFalse);
+        timer.cancel();
       });
 
       test('should elapse time by the specified amount', () {