Index: packages/collection/test/equality_set_test.dart |
diff --git a/packages/collection/test/equality_set_test.dart b/packages/collection/test/equality_set_test.dart |
new file mode 100644 |
index 0000000000000000000000000000000000000000..a326b31ac595bfe3120e94f311216f06afdf86ad |
--- /dev/null |
+++ b/packages/collection/test/equality_set_test.dart |
@@ -0,0 +1,48 @@ |
+// Copyright (c) 2016, 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. |
+ |
+import 'package:collection/collection.dart'; |
+import 'package:test/test.dart'; |
+ |
+void main() { |
+ test("uses the given equality", () { |
+ var set = new EqualitySet(const IterableEquality()); |
+ expect(set, isEmpty); |
+ |
+ var list1 = [1, 2, 3]; |
+ expect(set.add(list1), isTrue); |
+ expect(set, contains([1, 2, 3])); |
+ expect(set, contains(same(list1))); |
+ |
+ var list2 = [1, 2, 3]; |
+ expect(set.add(list2), isFalse); |
+ expect(set, contains([1, 2, 3])); |
+ expect(set, contains(same(list1))); |
+ expect(set, isNot(contains(same(list2)))); |
+ |
+ var list3 = [2, 3, 4]; |
+ expect(set.add(list3), isTrue); |
+ expect(set, contains(same(list1))); |
+ expect(set, contains(same(list3))); |
+ }); |
+ |
+ test("EqualitySet.from() prefers the lattermost equivalent value", () { |
+ var list1 = [1, 2, 3]; |
+ var list2 = [2, 3, 4]; |
+ var list3 = [1, 2, 3]; |
+ var list4 = [2, 3, 4]; |
+ var list5 = [1, 2, 3]; |
+ var list6 = [1, 2, 3]; |
+ |
+ var set = new EqualitySet.from( |
+ const IterableEquality(), [list1, list2, list3, list4, list5, list6]); |
+ |
+ expect(set, contains(same(list1))); |
+ expect(set, contains(same(list2))); |
+ expect(set, isNot(contains(same(list3)))); |
+ expect(set, isNot(contains(same(list4)))); |
+ expect(set, isNot(contains(same(list5)))); |
+ expect(set, isNot(contains(same(list6)))); |
+ }); |
+} |