Change IllegalArgumentException to ArgumentError.

pkg/unittest/core_matchers.dart

 // Copyright (c) 2012, 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.
 
 
 /**
  * Returns a matcher that matches empty strings, maps or collections.
  */
 const Matcher isEmpty = const _Empty();
 
@@ skipping 405 matching lines @@
 const isException = const _Exception();
 
 /** A matcher for functions that throw Exception */
 const Matcher throwsException = const _Throws(isException);
 
 class _Exception extends _ExceptionMatcher {
   const _Exception() : super("Exception");
   bool matches(item, MatchState matchState) => item is Exception;
 }
 
-/** A matcher for IllegalArgumentExceptions. */
-const isIllegalArgumentException = const _IllegalArgumentException();
+/** A matcher for ArgumentErrors. */
+const isArgumentError = const _ArgumentError();
 
-/** A matcher for functions that throw IllegalArgumentException */
-const Matcher throwsIllegalArgumentException =
-    const _Throws(isIllegalArgumentException);
+/** A matcher for functions that throw ArgumentError */
+const Matcher throwsArgumentError =
+    const _Throws(isArgumentError);
 
-class _IllegalArgumentException extends _ExceptionMatcher {
-  const _IllegalArgumentException() : super("IllegalArgumentException");
-  bool matches(item, MatchState matchState) => item is IllegalArgumentException;
+class _ArgumentError extends _ExceptionMatcher {
+  const _ArgumentError() : super("ArgumentError");
+  bool matches(item, MatchState matchState) => item is ArgumentError;
 }
 
 /** A matcher for IllegalJSRegExpExceptions. */
 const isIllegalJSRegExpException = const _IllegalJSRegExpException();
 
 /** A matcher for functions that throw IllegalJSRegExpException */
 const Matcher throwsIllegalJSRegExpException =
     const _Throws(isIllegalJSRegExpException);
 
 class _IllegalJSRegExpException extends _ExceptionMatcher {
@@ skipping 171 matching lines @@
   final _matcher;
   final String _description;
 
   const _Predicate(this._matcher, this._description);
 
   bool matches(item, MatchState matchState) => _matcher(item);
 
   Description describe(Description description) =>
       description.add(_description);
 }