public async Task AddAsync_UsingNullAsNewTodoItemInfo_MustThrowException()
{
// Arrange
var mockTodoDbContext = new DbContextMock <TodoDbContext>(DummyOptions);
var mockLogger = new Mock <ILogger <TodoItemService> >();
var todoItemService = new TodoItemService(mockTodoDbContext.Object, mockLogger.Object);
NewTodoItemInfo newTodoItemInfo = null;
// Act
// ReSharper disable once ExpressionIsAlwaysNull
Func <Task <long> > addAsyncCall = async() => await todoItemService.AddAsync(newTodoItemInfo);
// Assert
await addAsyncCall
.Should()
.ThrowExactlyAsync <ArgumentNullException>("service cannot add data using a null item");
}
