PlatformService tests

src/app/services/platform.service.spec.ts

@@ -1,12 +1,57 @@
 import { TestBed } from '@angular/core/testing';
 
 import { PlatformService } from './platform.service';
+import { ElectronService } from 'ngx-electron';
+
+class ElectronServiceMock {
+  process = {
+    platform: 'unknown'
+  };
+}
 
 describe('PlatformService', () => {
-  beforeEach(() => TestBed.configureTestingModule({}));
+  let electronServiceMock: ElectronServiceMock;
+  let service: PlatformService;
+
+  beforeEach(() => {
+    electronServiceMock = new ElectronServiceMock();
+  });
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      providers: [
+        PlatformService,
+        {provide: ElectronService, useValue: electronServiceMock}
+      ]
+    });
+  });
+
+  beforeEach(() => {
+    service = TestBed.get(PlatformService);
+  })
 
   it('should be created', () => {
-    const service: PlatformService = TestBed.get(PlatformService);
     expect(service).toBeTruthy();
   });
+
+  it('should be on windows platform', () => {
+    electronServiceMock.process.platform = 'win32';
+    expect(service.isWindows()).toBeTruthy();
+    expect(service.isDarwin()).toBeFalsy();
+    expect(service.isLinux()).toBeFalsy();
+  });
+
+  it('should be on linux platform', () => {
+    electronServiceMock.process.platform = 'linux';
+    expect(service.isWindows()).toBeFalsy();
+    expect(service.isDarwin()).toBeFalsy();
+    expect(service.isLinux()).toBeTruthy();
+  });
+
+  it('should be on darwin platform', () => {
+    electronServiceMock.process.platform = 'darwin';
+    expect(service.isWindows()).toBeFalsy();
+    expect(service.isDarwin()).toBeTruthy();
+    expect(service.isLinux()).toBeFalsy();
+  });
 });