This library is there to help you do assertions on events that are about to happen in the near future.
For example, when building integration tests for a subscriber on a service bus.
Define
Define your hypothesis with an experiment, time constraint and test:
var hypothesis = Hypothesis
.For<Data>()
.Any(x => x.Value == 1234);
Test
You test your hypothesis by providing samples:
await hypothesis.Test(sample);
For example with an injected stub:
var service = Substitute.For<IDemoService>();
service
.When(x => x.Demo(Arg.Any<Data>()))
.Do(x => hypothesis.Test(x.Arg<Data>()));
or with a hand-rolled implementation:
class TestService : IDemoService
{
private readonly IHypothesis<Data> _hypothesis;
public TestService(IHypothesis<Data> hypothesis) =>
_hypothesis = hypothesis;
public Task Demo(Data data) =>
_hypothesis.Test(data);
}
var service = new TestService(hypothesis);
