Replace the existing unittest APIs with the new runner infrastructure.

test/matcher/completion_test.dart

+// Copyright (c) 2015, 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.
+
+import 'dart:async';
+
+import 'package:unittest/unittest.dart';
+
+import '../utils.dart';
+
+void main() {
+  group("[completes]", () {
+    test("blocks the test until the Future completes", () {
+      return expectTestBlocks(() {
+        var completer = new Completer();
+        expect(completer.future, completes);
+        return completer;
+      }, (completer) => completer.complete());
+    });
+
+    test("with an error", () {
+      return runTest(() {
+        expect(new Future.error('X'), completes);
+      }).then((liveTest) {
+        expectTestFailed(liveTest, startsWith(
+            "Expected future to complete successfully, but it failed with X"));
+      });
+    });
+
+    test("with a failure", () {
+      return runTest(() {
+        expect(new Future.error(new TestFailure('oh no')), completes);
+      }).then((liveTest) {
+        expectTestFailed(liveTest, "oh no");
+      });
+    });
+
+    test("with a non-function", () {
+      return runTest(() {
+        expect(10, completes);
+      }).then((liveTest) {
+        expectTestFailed(liveTest,
+            "Expected: completes successfully\n"
+            "  Actual: <10>\n");
+      });
+    });
+
+    test("with a successful future", () {
+      expect(new Future.value('1'), completes);
+    });
+  });
+
+  group("[completion]", () {
+    test("blocks the test until the Future completes", () {
+      return expectTestBlocks(() {
+        var completer = new Completer();
+        expect(completer.future, completion(isNull));
+        return completer;
+      }, (completer) => completer.complete());
+    });
+
+    test("with an error", () {
+      return runTest(() {
+        expect(new Future.error('X'), completion(isNull));
+      }).then((liveTest) {
+        expectTestFailed(liveTest, startsWith(
+            "Expected future to complete successfully, but it failed with X"));
+      });
+    });
+
+    test("with a failure", () {
+      return runTest(() {
+        expect(new Future.error(new TestFailure('oh no')), completion(isNull));
+      }).then((liveTest) {
+        expectTestFailed(liveTest, "oh no");
+      });
+    });
+
+    test("with a non-function", () {
+      return runTest(() {
+        expect(10, completion(equals(10)));
+      }).then((liveTest) {
+        expectTestFailed(liveTest,
+            "Expected: completes to a value that <10>\n"
+            "  Actual: <10>\n");
+      });
+    });
+
+    test("with an incorrect value", () {
+      return runTest(() {
+        expect(new Future.value('a'), completion(equals('b')));
+      }).then((liveTest) {
+        expectTestFailed(liveTest, startsWith(
+            "Expected: 'b'\n"
+            "  Actual: 'a'\n"
+            "   Which: is different."));;
+      });
+    });
+  });
+}