public async Task DeleteAsync_UsingNonexistentEntityKey_MustThrowException()
{
// Arrange
var inMemoryDatabase =
new DbContextOptionsBuilder <TodoDbContext>()
.UseInMemoryDatabase($"db--{Guid.NewGuid():N}")
.EnableDetailedErrors()
.EnableSensitiveDataLogging();
var mockLogger = new Mock <ILogger <TodoItemService> >();
var owner = new Mock <IPrincipal>();
owner.SetupGet(x => x.Identity).Returns(new GenericIdentity("test"));
var deleteTodoItemInfo = new DeleteTodoItemInfo
{
Id = long.MaxValue,
Owner = owner.Object
};
var todoItemService = new TodoItemService(new TodoDbContext(inMemoryDatabase.Options), mockLogger.Object);
// Act
Func <Task> deleteAsyncCall = async() => await todoItemService.DeleteAsync(deleteTodoItemInfo);
// Assert
await deleteAsyncCall.Should().ThrowExactlyAsync <EntityNotFoundException>(
"service cannot delete data using nonexistent entity key");
}
public Task DeleteAsync(DeleteTodoItemInfo deleteTodoItemInfo)
{
if (deleteTodoItemInfo == null)
{
throw new ArgumentNullException(nameof(deleteTodoItemInfo));
}
Validator.ValidateObject(deleteTodoItemInfo, new ValidationContext(deleteTodoItemInfo),
validateAllProperties: true);
return(InternalDeleteAsync(deleteTodoItemInfo));
}
private async Task InternalDeleteAsync(DeleteTodoItemInfo deleteTodoItemInfo)
{
logger.LogInformation("About to delete item using context {@DeleteTodoItemInfo} ...", deleteTodoItemInfo);
TodoItem existingTodoItem = await GetExistingTodoItem(deleteTodoItemInfo.Id, deleteTodoItemInfo.Owner);
todoDbContext.TodoItems.Remove(existingTodoItem);
await todoDbContext.SaveChangesAsync();
logger.LogInformation("Item with id {TodoItemId} has been deleted by user [{User}]",
deleteTodoItemInfo.Id, deleteTodoItemInfo.Owner.GetName());
}
public async Task DeleteAsync_UsingNullAsDeleteTodoItemInfo_MustThrowException()
{
// Arrange
var mockTodoDbContext = new DbContextMock <TodoDbContext>(DummyOptions);
var mockLogger = new Mock <ILogger <TodoItemService> >();
var todoItemService = new TodoItemService(mockTodoDbContext.Object, mockLogger.Object);
DeleteTodoItemInfo deleteTodoItemInfo = null;
// Act
// ReSharper disable once ExpressionIsAlwaysNull
Func <Task> deleteAsyncCall = async() => await todoItemService.DeleteAsync(deleteTodoItemInfo);
// Assert
await deleteAsyncCall
.Should().ThrowExactlyAsync <ArgumentNullException>("service cannot delete data using a null item")
.WithParameterName(nameof(deleteTodoItemInfo), "the item is null");
}
