Add support for setUpAll and tearDownAll.

test/runner/tear_down_all_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.
+
+@TestOn("vm")
+
+import 'package:scheduled_test/descriptor.dart' as d;
+import 'package:scheduled_test/scheduled_stream.dart';
+import 'package:scheduled_test/scheduled_test.dart';
+
+import '../io.dart';
+
+void main() {
+  useSandbox();
+
+  test("an error causes the run to fail", () {
+    d.file("test.dart", r"""
+        import 'package:test/test.dart';
+
+        void main() {
+          tearDownAll(() => throw "oh no");
+
+          test("test", () {});
+        }
+        """).create();
+
+    var test = runTest(["test.dart"]);
+    test.stdout.expect(consumeThrough(contains("-1: (tearDownAll)")));
+    test.stdout.expect(consumeThrough(contains("-1: Some tests failed.")));
+    test.shouldExit(1);
+  });
+
+  test("doesn't run if no tests in the group are selected", () {
+    d.file("test.dart", r"""
+        import 'package:test/test.dart';
+
+        void main() {
+          group("with tearDownAll", () {
+            tearDownAll(() => throw "oh no");
+
+            test("test", () {});
+          });
+
+          group("without tearDownAll", () {
+            test("test", () {});
+          });
+        }
+        """).create();
+
+    var test = runTest(["test.dart", "--name", "without"]);
+    test.stdout.expect(never(contains("(tearDownAll)")));
+    test.shouldExit(0);
+  });
+
+  test("doesn't run if no tests in the group are selected", () {
+    d.file("test.dart", r"""
+        import 'package:test/test.dart';
+
+        void main() {
+          group("group", () {
+            tearDownAll(() => throw "oh no");
+
+            test("with", () {});
+          });
+
+          group("group", () {
+            test("without", () {});
+          });
+        }
+        """).create();
+
+    var test = runTest(["test.dart", "--name", "without"]);
+    test.stdout.expect(never(contains("(tearDownAll)")));
+    test.shouldExit(0);
+  });
+
+  test("doesn't run if no tests in the group match the platform", () {
+    d.file("test.dart", r"""
+        import 'package:test/test.dart';
+
+        void main() {
+          group("group", () {
+            tearDownAll(() => throw "oh no");
+
+            test("with", () {}, testOn: "browser");
+          });
+
+          group("group", () {
+            test("without", () {});
+          });
+        }
+        """).create();
+
+    var test = runTest(["test.dart"]);
+    test.stdout.expect(never(contains("(tearDownAll)")));
+    test.shouldExit(0);
+  });
+
+  test("doesn't run if the group doesn't match the platform", () {
+    d.file("test.dart", r"""
+        import 'package:test/test.dart';
+
+        void main() {
+          group("group", () {
+            tearDownAll(() => throw "oh no");
+
+            test("with", () {});
+          }, testOn: "browser");
+
+          group("group", () {
+            test("without", () {});
+          });
+        }
+        """).create();
+
+    var test = runTest(["test.dart"]);
+    test.stdout.expect(never(contains("(tearDownAll)")));
+    test.shouldExit(0);
+  });
+}