Replace the existing unittest APIs with the new runner infrastructure.

test/matcher/throws_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("synchronous", () {
+    group("[throws]", () {
+      test("with a function that throws an error", () {
+        expect(() => throw 'oh no', throws);
+      });
+
+      test("with a function that doesn't throw", () {
+        return runTest(() {
+          expect(() {}, throws);
+        }).then((liveTest) {
+          expectTestFailed(liveTest,
+              "Expected: throws\n"
+              "  Actual: <Closure: () => dynamic>\n"
+              "   Which: did not throw\n");
+        });
+      });
+
+      test("with a non-function", () {
+        return runTest(() {
+          expect(10, throws);
+        }).then((liveTest) {
+          expectTestFailed(liveTest,
+              "Expected: throws\n"
+              "  Actual: <10>\n"
+              "   Which: is not a Function or Future\n");
+        });
+      });
+    });
+
+    group("[throwsA]", () {
+      test("with a function that throws an identical error", () {
+        expect(() => throw 'oh no', throwsA('oh no'));
+      });
+
+      test("with a function that throws a matching error", () {
+        expect(() => throw new FormatException("bad"),
+            throwsA(isFormatException));
+      });
+
+      test("with a function that doesn't throw", () {
+        return runTest(() {
+          expect(() {}, throwsA('oh no'));
+        }).then((liveTest) {
+          expectTestFailed(liveTest,
+              "Expected: throws 'oh no'\n"
+              "  Actual: <Closure: () => dynamic>\n"
+              "   Which: did not throw\n");
+        });
+      });
+
+      test("with a non-function", () {
+        return runTest(() {
+          expect(10, throwsA('oh no'));
+        }).then((liveTest) {
+          expectTestFailed(liveTest,
+              "Expected: throws 'oh no'\n"
+              "  Actual: <10>\n"
+              "   Which: is not a Function or Future\n");
+        });
+      });
+
+      test("with a function that throws the wrong error", () {
+        return runTest(() {
+          expect(() => throw 'aw dang', throwsA('oh no'));
+        }).then((liveTest) {
+          expectTestFailed(liveTest,
+              "Expected: throws 'oh no'\n"
+              "  Actual: <Closure: () => dynamic>\n"
+              "   Which: threw 'aw dang'\n");
+        });
+      });
+    });
+  });
+
+  group("asynchronous", () {
+    group("[throws]", () {
+      test("with a Future that throws an error", () {
+        expect(new Future.error('oh no'), throws);
+      });
+
+      test("with a Future that doesn't throw", () {
+        return runTest(() {
+          expect(new Future.value(), throws);
+        }).then((liveTest) {
+          expectTestFailed(liveTest,
+              "Expected future to fail, but succeeded with 'null'.");
+        });
+      });
+
+      test("won't let the test end until the Future completes", () {
+        return expectTestBlocks(() {
+          var completer = new Completer();
+          expect(completer.future, throws);
+          return completer;
+        }, (completer) => completer.completeError('oh no'));
+      });
+    });
+
+    group("[throwsA]", () {
+      test("with a Future that throws an identical error", () {
+        expect(new Future.error('oh no'), throwsA('oh no'));
+      });
+
+      test("with a Future that throws a matching error", () {
+        expect(new Future.error(new FormatException("bad")),
+            throwsA(isFormatException));
+      });
+
+      test("with a Future that doesn't throw", () {
+        return runTest(() {
+          expect(new Future.value(), throwsA('oh no'));
+        }).then((liveTest) {
+          expectTestFailed(liveTest,
+              "Expected future to fail, but succeeded with 'null'.");
+        });
+      });
+
+      test("with a Future that throws the wrong error", () {
+        return runTest(() {
+          expect(new Future.error('aw dang'), throwsA('oh no'));
+        }).then((liveTest) {
+          expectTestFailed(liveTest, startsWith(
+              "Expected: throws 'oh no'\n"
+              "  Actual: <Closure: () => dynamic>\n"
+              "   Which: threw 'aw dang'\n"));
+        });
+      });
+
+      test("won't let the test end until the Future completes", () {
+        return expectTestBlocks(() {
+          var completer = new Completer();
+          expect(completer.future, throwsA('oh no'));
+          return completer;
+        }, (completer) => completer.completeError('oh no'));
+      });
+    });
+  });
+}