Add tests to Response extensions

shic/test/src/ext/response_test.dart

@@ -0,0 +1,76 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:http/http.dart';
+import 'package:shic/shic.dart';
+
+void main() {
+  group('ResponseExt', () {
+    test(
+      'bodyJson should parse json correctly',
+      () {
+        // arrange
+        final expected = {'foo': 'bar'};
+        final response = Response('{"foo": "bar"}', 200);
+
+        // act
+        final actual = response.bodyJson;
+
+        // assert
+        expect(actual, expected);
+      },
+    );
+  });
+
+  group('StreamedResponseExt', () {
+    test('body should return body as string', () async {
+      // arrange
+      final expected = 'Hello, world!';
+      final response = StreamedResponse(
+        Stream.value(expected.codeUnits),
+        200,
+      );
+
+      // act
+      final actual = await response.body;
+
+      // assert
+      expect(actual, expected);
+    });
+
+    test(
+      'bodyJson should parse json correctly',
+      () async {
+        // arrange
+        final expected = {'foo': 'bar'};
+        final response = StreamedResponse(
+          Stream.value('{"foo": "bar"}'.codeUnits),
+          200,
+        );
+
+        // act
+        final actual = await response.bodyJson;
+
+        // assert
+        expect(actual, expected);
+      },
+    );
+  });
+
+  group('FutureResponseExt', () {
+    test(
+      'mapJsonWith should map json correctly',
+      () async {
+        // arrange
+        final expected = {'foo': 'bar', 'baz': 'qux'};
+        final response = Future.value(Response('{"foo": "bar"}', 200));
+
+        // act
+        final actual = await response.mapJsonWith(
+          (Map<String, dynamic> json) => {...json, 'baz': 'qux'},
+        );
+
+        // assert
+        expect(actual, expected);
+      },
+    );
+  });
+}