Migrate first block of tests in standalone to standalone_2

tests/standalone/assert_test.dart

-// Copyright (c) 2011, 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.
-// VMOptions=--enable_asserts
-
-// Dart test program testing assert statements.
-
-import "package:expect/expect.dart";
-
-class AssertTest {
-  static test() {
-    try {
-      assert(false);
-      Expect.fail("Assertion 'false' didn't fail.");
-    } on AssertionError catch (error) {
-      Expect.isTrue(error.toString().contains("'false'"));
-      Expect.isTrue(
-          error.stackTrace.toString().contains("assert_test.dart:13:14"));
-    }
-  }
-
-  static testClosure() {
-    try {
-      assert(() => false);
-      Expect.fail("Assertion '() => false' didn't fail.");
-    } on AssertionError catch (error) {
-      Expect.isTrue(error.toString().contains("'() => false'"));
-      Expect.isTrue(
-          error.stackTrace.toString().contains("assert_test.dart:24:14"));
-    }
-  }
-
-  static testMain() {
-    test();
-    testClosure();
-  }
-}
-
-main() {
-  AssertTest.testMain();
-}