test rename overhaul: step 7 - corelib tests

tests/corelib/src/RegExp4Test.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.
-// Dart test for testing regular expressions in Dart.
-
-main() {
-  try {
-    RegExp ex = const RegExp(null);
-    Expect.fail("Expected: NullPointerException got: no exception");
-  } catch (Exception ex) {
-    if (!(ex is NullPointerException)) {
-      Expect.fail("Expected: NullPointerException" + " got: ${ex}");
-    }
-  }
-  try {
-    const RegExp(@"^\w+$").hasMatch(null);
-    Expect.fail("Expected: NullPointerException got: no exception");
-  } catch (Exception ex) {
-    if (!(ex is NullPointerException)) {
-      Expect.fail("Expected: NullPointerException" + " got: ${ex}");
-    }
-  }
-  try {
-    const RegExp(@"^\w+$").firstMatch(null);
-    Expect.fail("Expected: NullPointerException got: no exception");
-  } catch (Exception ex) {
-    if (!(ex is NullPointerException)) {
-      Expect.fail("Expected: NullPointerException" + " got: ${ex}");
-    }
-  }
-  try {
-    const RegExp(@"^\w+$").allMatches(null);
-    Expect.fail("Expected: NullPointerException got: no exception");
-  } catch (Exception ex) {
-    if (!(ex is NullPointerException)) {
-      Expect.fail("Expected: NullPointerException" + " got: ${ex}");
-    }
-  }
-  try {
-    const RegExp(@"^\w+$").stringMatch(null);
-    Expect.fail("Expected: NullPointerException got: no exception");
-  } catch (Exception ex) {
-    if (!(ex is NullPointerException)) {
-      Expect.fail("Expected: NullPointerException" + " got: ${ex}");
-    }
-  }
-}