diff --git a/src/app/service/github/github.service.spec.ts b/src/app/service/github/github.service.spec.ts
index 0276eac..64aa257 100644
--- a/src/app/service/github/github.service.spec.ts
+++ b/src/app/service/github/github.service.spec.ts
@@ -2,11 +2,16 @@ import { TestBed } from '@angular/core/testing';
 
 import { GithubService } from './github.service';
 import { HttpClient } from '@angular/common/http';
+import { Release, RepositoryData } from './github-models';
+import { of } from 'rxjs';
+import { Application } from '../../model/application.model';
 
 describe('GithubService', () => {
     let service: GithubService;
 
-    const mockHttpClient = {};
+    const mockHttpClient = {
+        get: jest.fn(),
+    };
 
     beforeEach(() => {
         TestBed.configureTestingModule({
@@ -18,4 +23,54 @@ describe('GithubService', () => {
     it('should be created', () => {
         expect(service).toBeTruthy();
     });
+
+    it('should get last release', async () => {
+        const mockRelease: Release = {
+            name: 'release name',
+        };
+
+        const repositoryData: RepositoryData = {
+            repository: 'repo',
+            username: 'user',
+        };
+        mockHttpClient.get.mockReturnValue(of(mockRelease));
+
+        const release = await service.getLastRelease(repositoryData);
+
+        expect(release).toEqual(mockRelease);
+    });
+
+    it('should get repository data', async () => {
+        const application: Application = {
+            id: 'id',
+            name: 'app',
+            homepage: 'http://github.com/app-outlet/karavel',
+        };
+
+        const repoData = await service.getRepositoryData(application);
+
+        const expected: RepositoryData = {
+            repository: 'karavel',
+            username: 'app-outlet',
+        };
+
+        expect(repoData).toEqual(expected);
+    });
+
+    it('should throw error if app has no homepage', (done) => {
+        const application: Application = {
+            id: 'id',
+            name: 'app',
+        };
+
+        service
+            .getRepositoryData(application)
+            .then(() => {
+                fail();
+            })
+            .catch((err) => {
+                expect(err).toBeDefined();
+                done();
+            });
+    });
 });