public void CreateUser_Success_Test()
{
//Arrange
const int expectedReturnId = 0;
_repositoryMock.Setup(r => r.Create(_storedUser)).Returns(Task.FromResult(expectedReturnId));
var userFacade = new UserAdapter(_repositoryMock.Object);
//Act
var actualId = userFacade.Create(_user);
//Assert
Assert.IsTrue(expectedReturnId == actualId.Result);
}