Add missing newline after Actual value in fail message.

pkg/unittest/lib/src/iterable_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.
 
 part of matcher;
 
 /**
  * Returns a matcher which matches [Iterable]s in which all elements
  * match the given [matcher].
  */
@@ skipping 66 matching lines @@
 }
 
 /**
  * Returns a matcher which matches [Iterable]s that have the same
  * length and the same elements as [expected], and in the same order.
  * This is equivalent to equals but does not recurse.
  */
 
 Matcher orderedEquals(Iterable expected) => new _OrderedEquals(expected);
 
-class _OrderedEquals extends BaseMatcher {
+class _OrderedEquals extends Matcher {
   final Iterable _expected;
   Matcher _matcher;
 
   _OrderedEquals(this._expected) {
     _matcher = equals(_expected, 1);
   }
 
   bool matches(item, Map matchState) =>
       (item is Iterable) && _matcher.matches(item, matchState);
 
@@ skipping 12 matching lines @@
 }
 /**
  * Returns a matcher which matches [Iterable]s that have the same
  * length and the same elements as [expected], but not necessarily in
  * the same order. Note that this is O(n^2) so should only be used on
  * small objects.
  */
 Matcher unorderedEquals(Iterable expected) =>
     new _UnorderedEquals(expected);
 
-class _UnorderedEquals extends BaseMatcher {
+class _UnorderedEquals extends Matcher {
   Iterable _expected;
 
   _UnorderedEquals(Iterable this._expected);
 
   String _test(item) {
     if (item is !Iterable) {
       return 'not iterable';
     }
     // Check the lengths are the same.
     var expectedLength = _expected.length;
@@ skipping 39 matching lines @@
 
   Description describeMismatch(item, Description mismatchDescription,
                                Map matchState, bool verbose) =>
       mismatchDescription.add(_test(item));
 }
 
 /**
  * Iterable matchers match against [Iterable]s. We add this intermediate
  * class to give better mismatch error messages than the base Matcher class.
  */
-abstract class _IterableMatcher extends BaseMatcher {
+abstract class _IterableMatcher extends Matcher {
   const _IterableMatcher();
   Description describeMismatch(item, Description mismatchDescription,
                                Map matchState, bool verbose) {
     if (item is! Iterable) {
       return mismatchDescription.
           addDescriptionOf(item).
           add(' not an Iterable');
     } else {
       return super.describeMismatch(item, mismatchDescription, matchState,
         verbose);
@@ skipping 49 matching lines @@
       return mismatchDescription.
           add('has ').
           addDescriptionOf(matchState["actual"]).
           add(' which is not $_description ').
           addDescriptionOf(matchState["expected"]).
           add(' at index ${matchState["index"]}');
     }
   }
 }