public async Task Run_Func_ExecutesTwice()
{
// arrange
var next1 = new NextFunc();
var next2 = new NextFunc();
int executed = 0;
Task Middleware(DispatchMiddlewareContext context, Func <Task> next)
{
executed++;
return(next());
}
var descriptor = new TaskMiddlewareDescriptor(Middleware);
var context = CreateContext();
// act
await TaskMiddlewareRunner.RunAsync(descriptor, context, next1.InvokeAsync);
await TaskMiddlewareRunner.RunAsync(descriptor, context, next2.InvokeAsync);
// assert
executed.Should().Be(2);
next1.ExecutionCount.Should().Be(1);
next2.ExecutionCount.Should().Be(1);
}
public async Task Run_Type_Executes(bool addMiddleware)
{
// arrange
var next = new NextFunc();
var descriptor = TaskMiddlewareDescriptor.Create <TestMiddleware>();
IServiceProvider serviceProvider = CreateServiceProvider(addMiddleware);
var context = CreateContext(serviceProvider);
// act
await TaskMiddlewareRunner.RunAsync(descriptor, context, next.InvokeAsync);
// assert
var tracker = serviceProvider.GetRequiredService <ExecutionTracker>();
tracker.ExecutionCount.Should().Be(1);
next.ExecutionCount.Should().Be(1);
}
public async Task Run_NullNext_Throws()
{
var descriptor = new TaskMiddlewareDescriptor((c, n) => Task.CompletedTask);
Func <Task> act = () => TaskMiddlewareRunner.RunAsync(descriptor, CreateContext(), null);
await act.Should().ThrowExactlyAsync <ArgumentNullException>();
}
public async Task Run_NullDescriptor_Throws()
{
Func <Task> act = () => TaskMiddlewareRunner.RunAsync(null, CreateContext(), () => Task.CompletedTask);
await act.Should().ThrowExactlyAsync <ArgumentNullException>();
}
private static Func <DispatchMiddlewareContext, Func <Task>, Task> WrapMiddleware(
TaskMiddlewareDescriptor descriptor)
{
return((context, next) => TaskMiddlewareRunner.RunAsync(descriptor, context, next));
}