public async Task GivenPiplelineWithThreeStages_WhenHandlingRequest_ThenAllThreeHandlersHandleRequest()
{
var testHandlerA = new TestHandlerA <TestRequestA>();
var testHandlerB = new TestHandlerB <TestRequestA>();
var testHandlerC = new TestHandlerC <TestRequestA>();
Dictionary <Type, Object> dictionary = new Dictionary <Type, object>
{
[typeof(TestHandlerA <TestRequestA>)] = testHandlerA,
[typeof(TestHandlerB <TestRequestA>)] = testHandlerB,
[typeof(TestHandlerC <TestRequestA>)] = testHandlerC,
};
PipelineDefinitionBuilder builder = new PipelineDefinitionBuilder(type => dictionary[type]);
var pipeline = builder.StartWith <TestHandlerA <TestRequestA>, TestRequestA>()
.ThenWith <TestHandlerB <TestRequestA> >()
.ThenWith <TestHandlerC <TestRequestA> >()
.Build();
var testRequest = new TestRequestA();
await pipeline.HandleAsync(testRequest, new Context());
Assert.Multiple(() =>
{
Assert.That(testHandlerA._request, Is.EqualTo(testRequest));
Assert.That(testHandlerB._request, Is.EqualTo(testRequest));
Assert.That(testHandlerC._request, Is.EqualTo(testRequest));
});
}
public void AddHandlerTest()
{
var handlerA = new TestHandlerA();
var pipeline = new RuntimePipeline(handlerA);
var handlerB = new TestHandlerB();
// B->A
pipeline.AddHandler(handlerB);
ValidatePipeline(pipeline, handlerB, handlerA);
}
public void AddHandlerTest()
{
var handlerA = new TestHandlerA();
var pipeline = new RuntimePipeline(handlerA);
var handlerB = new TestHandlerB();
// B->A
pipeline.AddHandler(handlerB);
ValidatePipeline(pipeline, handlerB, handlerA);
}
public void AddHandlerBeforeTest()
{
var handlerD = new TestHandlerD();
var pipeline = new RuntimePipeline(handlerD);
var handlerB = new TestHandlerB();
// B->D
pipeline.AddHandler(handlerB);
var handlerA = new TestHandlerA();
// A->B->D
pipeline.AddHandlerBefore<TestHandlerB>(handlerA);
ValidatePipeline(pipeline, handlerA, handlerB, handlerD);
var handlerC = new TestHandlerC();
// A->B->C->D
pipeline.AddHandlerBefore<TestHandlerD>(handlerC);
ValidatePipeline(pipeline, handlerA, handlerB, handlerC, handlerD);
}
public void ReplaceHandlerTest()
{
var handlerC = new TestHandlerC();
var pipeline = new RuntimePipeline(handlerC);
var handlerB = new TestHandlerB();
pipeline.AddHandler(handlerB);
var handlerA = new TestHandlerA();
//A->B->C
pipeline.AddHandler(handlerA);
ValidatePipeline(pipeline, handlerA, handlerB, handlerC);
var handlerD = new TestHandlerD();
//A->D->C
pipeline.ReplaceHandler<TestHandlerB>(handlerD);
ValidatePipeline(pipeline, handlerA, handlerD, handlerC);
Assert.IsNull(handlerB.OuterHandler);
Assert.IsNull(handlerB.InnerHandler);
}
public void AddHandlerBeforeTest()
{
var handlerD = new TestHandlerD();
var pipeline = new RuntimePipeline(handlerD);
var handlerB = new TestHandlerB();
// B->D
pipeline.AddHandler(handlerB);
var handlerA = new TestHandlerA();
// A->B->D
pipeline.AddHandlerBefore <TestHandlerB>(handlerA);
ValidatePipeline(pipeline, handlerA, handlerB, handlerD);
var handlerC = new TestHandlerC();
// A->B->C->D
pipeline.AddHandlerBefore <TestHandlerD>(handlerC);
ValidatePipeline(pipeline, handlerA, handlerB, handlerC, handlerD);
}
public void ReplaceHandlerTest()
{
var handlerC = new TestHandlerC();
var pipeline = new RuntimePipeline(handlerC);
var handlerB = new TestHandlerB();
pipeline.AddHandler(handlerB);
var handlerA = new TestHandlerA();
//A->B->C
pipeline.AddHandler(handlerA);
ValidatePipeline(pipeline, handlerA, handlerB, handlerC);
var handlerD = new TestHandlerD();
//A->D->C
pipeline.ReplaceHandler <TestHandlerB>(handlerD);
ValidatePipeline(pipeline, handlerA, handlerD, handlerC);
Assert.IsNull(handlerB.OuterHandler);
Assert.IsNull(handlerB.InnerHandler);
}
public async Task GivenPiplelineWithThreeStages_WhenHandlingRequest_ThenAllThreeHandlersAreCalledInOrder()
{
var testHandlerA = new TestHandlerA <TestRequestA>();
var testHandlerB = new TestHandlerB <TestRequestA>();
var testHandlerC = new TestHandlerC <TestRequestA>();
Dictionary <Type, Object> dictionary = new Dictionary <Type, object>
{
[typeof(TestHandlerA <TestRequestA>)] = testHandlerA,
[typeof(TestHandlerB <TestRequestA>)] = testHandlerB,
[typeof(TestHandlerC <TestRequestA>)] = testHandlerC,
};
PipelineDefinitionBuilder builder = new
PipelineDefinitionBuilder(type => dictionary[type]);
var pipeline = builder.StartWith <TestHandlerA <TestRequestA>, TestRequestA>()
.ThenWith <TestHandlerB <TestRequestA> >()
.ThenWith <TestHandlerC <TestRequestA> >()
.Build();
var testRequest = new TestRequestA();
await pipeline.HandleAsync(testRequest, new Context());
var callOrder = new TestHandler <TestRequestA>[]
{
testHandlerA,
testHandlerB,
testHandlerC
}.OrderBy(x => x._timestamp)
.ToArray();
Assert.Multiple(() =>
{
Assert.That(callOrder[0], Is.EqualTo(testHandlerA));
Assert.That(callOrder[1], Is.EqualTo(testHandlerB));
Assert.That(callOrder[2], Is.EqualTo(testHandlerC));
});
}
public async Task GivenPipelineThatChangesRequest_WhenHandlingRequest_ThenChangesRequestInPipeline()
{
var testHandlerA = new TestHandlerA <TestRequestA>();
var testHandlerB = new TestHandlerB <TestRequestA>();
var testMutationHandler = new TestMutationHandler();
var testHandlerC = new TestHandlerC <TestRequestB>();
Dictionary <Type, Object> dictionary = new Dictionary <Type, object>
{
[typeof(TestHandlerA <TestRequestA>)] = testHandlerA,
[typeof(TestHandlerB <TestRequestA>)] = testHandlerB,
[typeof(TestHandlerC <TestRequestB>)] = testHandlerC,
[typeof(TestMutationHandler)] = testMutationHandler,
};
PipelineDefinitionBuilder builder = new
PipelineDefinitionBuilder(type => dictionary[type]);
var pipeline = builder.StartWith <TestHandlerA <TestRequestA>, TestRequestA> ()
.ThenWith <TestHandlerB <TestRequestA> >()
.ThenWithMutation <TestMutationHandler, TestRequestB>()
.ThenWith <TestHandlerC <TestRequestB> >()
.Build();
var testRequest = new TestRequestA();
await pipeline.HandleAsync(testRequest, new Context());
Assert.Multiple(() =>
{
Assert.That(testHandlerA._request, Is.EqualTo(testRequest));
Assert.That(testHandlerB._request, Is.EqualTo(testRequest));
Assert.That(testMutationHandler._request, Is.EqualTo(testRequest));
Assert.That(testHandlerC._request, Is.Not.EqualTo(testRequest));
Assert.That(testHandlerC._request, Is.TypeOf <TestRequestB>());
});
}
