Add tests for "Map" matchers – including null keys and values (#137)
diff --git a/test/map_matchers_test.dart b/test/map_matchers_test.dart
new file mode 100644
index 0000000..a6eba79
--- /dev/null
+++ b/test/map_matchers_test.dart
@@ -0,0 +1,57 @@
+import 'package:matcher/src/map_matchers.dart';
+import 'package:test/test.dart' show test;
+
+import 'test_utils.dart';
+
+void main() {
+ test('containsValue', () {
+ shouldPass({'a': 1, 'null': null}, containsValue(1));
+ shouldPass({'a': 1, 'null': null}, containsValue(null));
+ shouldFail(
+ {'a': 1, 'null': null},
+ containsValue(2),
+ 'Expected: contains value <2> '
+ "Actual: {'a': 1, 'null': null}",
+ );
+ });
+
+ test('containsPair', () {
+ shouldPass({'a': 1, 'null': null}, containsPair('a', 1));
+ shouldPass({'a': 1, 'null': null}, containsPair('null', null));
+ shouldFail(
+ {'a': 1, 'null': null},
+ containsPair('a', 2),
+ "Expected: contains pair 'a' => <2> "
+ "Actual: {'a': 1, 'null': null} "
+ "Which: contains key 'a' but with value is <1>",
+ );
+ shouldFail(
+ {'a': 1, 'null': null},
+ containsPair('b', 1),
+ "Expected: contains pair 'b' => <1> "
+ "Actual: {'a': 1, 'null': null} "
+ "Which: doesn't contain key 'b'",
+ );
+ shouldFail(
+ {'a': 1, 'null': null},
+ containsPair('null', 2),
+ "Expected: contains pair 'null' => <2> "
+ "Actual: {'a': 1, 'null': null} "
+ "Which: contains key 'null' but with value is <null>",
+ );
+ shouldFail(
+ {'a': 1, 'null': null},
+ containsPair('2', null),
+ "Expected: contains pair '2' => <null> "
+ "Actual: {'a': 1, 'null': null} "
+ "Which: doesn't contain key '2'",
+ );
+ shouldFail(
+ {'a': 1, 'null': null},
+ containsPair('2', 'b'),
+ "Expected: contains pair '2' => 'b' "
+ "Actual: {'a': 1, 'null': null} "
+ "Which: doesn't contain key '2'",
+ );
+ });
+}
