public void EditPost_ConcurrencyInUpdateAndToDoListExists_ThrowsDbUpdateConcurrencyException()
{
//Arrange
const int toDoListId = 1;
ToDoList toDoList = CreateToDoListDefault();
IToDoListService toDoListServiceFake = A.Fake <IToDoListService>();
DbUpdateConcurrencyException dbUpdateConcurrencyException =
new DbUpdateConcurrencyException(
"Update concurrency exception",
new List <IUpdateEntry> {
A.Fake <IUpdateEntry>()
});
A.CallTo(() => toDoListServiceFake.Update(A <ToDoList> .Ignored))
.ThrowsAsync(dbUpdateConcurrencyException);
A.CallTo(() => toDoListServiceFake.Exists(A <int> .Ignored))
.Returns(true);
ToDoListController sut = CreateSut(toDoListServiceFake);
//Act
Func <Task <IActionResult> > action = () => sut.Edit(toDoListId, toDoList);
//Assert
action
.Should()
.Throw <DbUpdateConcurrencyException>();
}
public async Task <IActionResult> Edit(int id, [Bind("Id,Name")] ToDoList toDoList)
{
if (id != toDoList.Id)
{
return(NotFound());
}
if (!ModelState.IsValid)
{
return(View(toDoList));
}
try
{
await _toDoListService.Update(toDoList);
}
catch (DbUpdateConcurrencyException)
{
var todoExists = await _toDoListService.Exists(id);
if (!todoExists)
{
return(NotFound());
}
throw;
}
this.AddAlertSuccess($"{toDoList.Name} updated.");
return(RedirectToAction(nameof(Index)));
}