pkg/matcher: reapply 36881,36896 working around Issue 19173

pkg/matcher/test/operator_matchers_test.dart

Index: pkg/matcher/test/operator_matchers_test.dart
diff --git a/pkg/matcher/test/operator_matchers_test.dart b/pkg/matcher/test/operator_matchers_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..fd9627a71a5afcc13f395cdd93613fd96c3e15f1
--- /dev/null
+++ b/pkg/matcher/test/operator_matchers_test.dart
@@ -0,0 +1,28 @@
+// 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.
+
+library matcher.operator_matchers_test;
+
+import 'package:matcher/matcher.dart';
+import 'package:unittest/unittest.dart' show test, group;
+
+import 'test_utils.dart';
+
+void main() {
+  initUtils();
+
+  test('anyOf', () {
+    shouldFail(0, anyOf([equals(1), equals(2)]),
+        "Expected: (<1> or <2>) Actual: <0>");
+    shouldPass(1, anyOf([equals(1), equals(2)]));
+  });
+
+  test('allOf', () {
+    shouldPass(1, allOf([lessThan(10), greaterThan(0)]));
+    shouldFail(-1, allOf([lessThan(10), greaterThan(0)]),
+        "Expected: (a value less than <10> and a value greater than <0>) "
+        "Actual: <-1> "
+        "Which: is not a value greater than <0>");
+  });
+}