Implemented getUserById to call get-a-user-using-their-id github api

Author: ievdokdm

lib/src/common/users_service.dart

@@ -16,6 +16,12 @@ class UsersService extends Service {
   Future<User> getUser(String? name) =>
       github.getJSON('/users/$name', convert: User.fromJson);
 
+  /// Fetches the user specified by [id].
+  ///
+  /// API docs: https://docs.github.com/en/rest/users/users#get-a-user-using-their-id
+  Future<User> getUserById(int id) =>
+      github.getJSON('/user/$id', convert: User.fromJson);
+
   /// Updates the Current User.
   ///
   /// API docs: https://developer.github.com/v3/users/#update-the-authenticated-user

test/unit/users_service_test.dart

@@ -0,0 +1,132 @@
+import 'package:github/github.dart';
+import 'package:http/http.dart';
+import 'package:http/testing.dart';
+import 'package:test/test.dart';
+
+void main() {
+  group(UsersService, () {
+    late GitHub github;
+    late UsersService usersService;
+    Request? lastRequest;
+
+    void setUpGitHub(Future<Response> Function(Request) handler) {
+      final client = MockClient((request) async {
+        lastRequest = request;
+        return handler(request);
+      });
+      github = GitHub(client: client);
+      usersService = UsersService(github);
+    }
+
+    tearDown(() {
+      lastRequest = null;
+    });
+
+    test('getUserById calls correct endpoint and parses response', () async {
+      const userResponse = '''
+      {
+        "login": "octocat",
+        "id": 1,
+        "node_id": "MDQ6VXNlcjE=",
+        "avatar_url": "https://github.com/images/error/octocat_happy.gif",
+        "gravatar_id": "",
+        "url": "https://api.github.com/users/octocat",
+        "html_url": "https://github.com/octocat",
+        "followers_url": "https://api.github.com/users/octocat/followers",
+        "following_url": "https://api.github.com/users/octocat/following{/other_user}",
+        "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
+        "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
+        "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
+        "organizations_url": "https://api.github.com/users/octocat/orgs",
+        "repos_url": "https://api.github.com/users/octocat/repos",
+        "events_url": "https://api.github.com/users/octocat/events{/privacy}",
+        "received_events_url": "https://api.github.com/users/octocat/received_events",
+        "type": "User",
+        "site_admin": false,
+        "name": "monalisa octocat",
+        "company": "GitHub",
+        "blog": "https://github.com/blog",
+        "location": "San Francisco",
+        "email": "octocat@github.com",
+        "bio": "There once was...",
+        "twitter_username": "monatheoctocat",
+        "public_repos": 2,
+        "public_gists": 1,
+        "followers": 20,
+        "following": 0,
+        "created_at": "2008-01-14T04:33:35Z",
+        "updated_at": "2008-01-14T04:33:35Z"
+      }
+      ''';
+
+      setUpGitHub((request) async {
+        return Response(userResponse, 200);
+      });
+
+      final user = await usersService.getUserById(1);
+
+      expect(user.login, 'octocat');
+      expect(user.id, 1);
+      expect(user.nodeId, 'MDQ6VXNlcjE=');
+      expect(
+        user.avatarUrl,
+        'https://github.com/images/error/octocat_happy.gif',
+      );
+      expect(user.gravatarId, '');
+      expect(user.url, 'https://api.github.com/users/octocat');
+      expect(user.htmlUrl, 'https://github.com/octocat');
+      expect(
+        user.followersUrl,
+        'https://api.github.com/users/octocat/followers',
+      );
+      expect(
+        user.followingUrl,
+        'https://api.github.com/users/octocat/following{/other_user}',
+      );
+      expect(
+        user.gistsUrl,
+        'https://api.github.com/users/octocat/gists{/gist_id}',
+      );
+      expect(
+        user.starredUrl,
+        'https://api.github.com/users/octocat/starred{/owner}{/repo}',
+      );
+      expect(
+        user.subscriptionsUrl,
+        'https://api.github.com/users/octocat/subscriptions',
+      );
+      expect(
+        user.organizationsUrl,
+        'https://api.github.com/users/octocat/orgs',
+      );
+      expect(user.reposUrl, 'https://api.github.com/users/octocat/repos');
+      expect(
+        user.eventsUrl,
+        'https://api.github.com/users/octocat/events{/privacy}',
+      );
+      expect(
+        user.receivedEventsUrl,
+        'https://api.github.com/users/octocat/received_events',
+      );
+      expect(user.type, 'User');
+      expect(user.siteAdmin, isFalse);
+      expect(user.name, 'monalisa octocat');
+      expect(user.company, 'GitHub');
+      expect(user.blog, 'https://github.com/blog');
+      expect(user.location, 'San Francisco');
+      expect(user.email, 'octocat@github.com');
+      expect(user.bio, 'There once was...');
+      expect(user.twitterUsername, 'monatheoctocat');
+      expect(user.publicReposCount, 2);
+      expect(user.publicGistsCount, 1);
+      expect(user.followersCount, 20);
+      expect(user.followingCount, 0);
+      expect(user.createdAt, DateTime.parse('2008-01-14T04:33:35Z'));
+      expect(user.updatedAt, DateTime.parse('2008-01-14T04:33:35Z'));
+
+      expect(lastRequest, isNotNull);
+      expect(lastRequest!.method, 'GET');
+      expect(lastRequest!.url.path, '/user/1');
+    });
+  });
+}