[
    undefined, null, ''
  ].forEach((username: string) => {
    it('RegisterAsync with invalid username shouldn\'t call Register API service', async () => {
      // Arrange
      let spy: jasmine.Spy = spyOn(http, 'put');

      // Act
      try {
        await authService.RegisterAsync(username, '12345Aqwe!@#');
      } catch (e) {
      }

      // Assert
      expect(spy).not.toHaveBeenCalled();
    });
    });

  [
    undefined, null, ''
  ].forEach((password: string) => {
    it('RegisterAsync with invalid password shouldn\'t call Register API service', async () => {
      // Arrange
      let spy: jasmine.Spy = spyOn(http, 'put');

      // Act
      try {
        await authService.RegisterAsync('username', password);
      } catch (e) {
      }

      // Assert
      expect(spy).not.toHaveBeenCalled();
    });
  });