public async Task Load_ShouldThrowArgumentNullException_WhenInputIsNull(string id)
{
Mock <IDynamoDBContext> mock = new Mock <IDynamoDBContext>();
ITokenUserRepository sut = new TokenUserRepository(mock.Object);
await Assert.ThrowsAsync <ArgumentNullException>(() => sut.Load(id));
}
public async Task Load_ShouldComplete_WhenInputIsValid()
{
TokenUser expectedUser = new TokenUser()
{
Id = "abc123"
};
Mock <IDynamoDBContext> mock = new Mock <IDynamoDBContext>();
mock.Setup(x => x.LoadAsync <TokenUser>(It.IsAny <string>(), It.IsAny <CancellationToken>())).Returns(Task.FromResult(expectedUser));
ITokenUserRepository repository = new TokenUserRepository(mock.Object);
TokenUser user = await repository.Load(expectedUser.Id);
mock.Verify(x => x.LoadAsync <TokenUser>(It.IsAny <string>(), It.IsAny <CancellationToken>()), Times.Once());
Assert.IsType <TokenUser>(user);
Assert.Equal(expectedUser, user);
}