public void SignOut_SignedUser_EraseToken()
{
var init = new InitializeMockContext();
var mock = init.mock;
var signInService = new SignInService(mock.Object);
var result = signInService.SignOut(new SignOutCommand()
{
UserId = 3
});
Assert.AreEqual(result, true);
mock.Verify(m => m.SaveChanges(), Times.Once());
}