Add feed id tests

Author: renefloor

packages/stream_feeds/test/models/feed_id_test.dart

@@ -0,0 +1,46 @@
+import 'package:stream_feeds/stream_feeds.dart';
+import 'package:test/test.dart';
+
+void main() {
+  test('feed id should be created with group and id', () {
+    const feedId = FeedId(group: 'group', id: 'id');
+    expect(feedId.group, 'group');
+    expect(feedId.id, 'id');
+    expect(feedId.rawValue, 'group:id');
+  });
+
+  test('feed id should be created with timeline group and id', () {
+    const feedId = FeedId.timeline('id');
+    expect(feedId.group, 'timeline');
+    expect(feedId.id, 'id');
+    expect(feedId.rawValue, 'timeline:id');
+  });
+
+  test('feed id should be created with notification group and id', () {
+    const feedId = FeedId.notification('id');
+    expect(feedId.group, 'notification');
+    expect(feedId.id, 'id');
+    expect(feedId.rawValue, 'notification:id');
+  });
+
+  test('feed id should be created with stories group and id', () {
+    const feedId = FeedId.stories('id');
+    expect(feedId.group, 'stories');
+    expect(feedId.id, 'id');
+    expect(feedId.rawValue, 'stories:id');
+  });
+
+  test('feed id should be created with story group and id', () {
+    const feedId = FeedId.story('id');
+    expect(feedId.group, 'story');
+    expect(feedId.id, 'id');
+    expect(feedId.rawValue, 'story:id');
+  });
+
+  test('feed id should be created with user group and id', () {
+    const feedId = FeedId.user('id');
+    expect(feedId.group, 'user');
+    expect(feedId.id, 'id');
+    expect(feedId.rawValue, 'user:id');
+  });
+}