public void Should_push_initial_state()
{
var sut = new Store <int>(Reducers.PassThrough, 1);
var mockObserver = new MockObserver <int>();
sut.Subscribe(mockObserver);
CollectionAssert.AreEqual(new[] { 1 }, mockObserver.Values);
}
public void Should_only_push_the_last_state_before_subscription()
{
var sut = new Store <int>(Reducers.Replace, 1);
var mockObserver = new MockObserver <int>();
sut.Dispatch(new FakeAction <int>(2));
sut.Subscribe(mockObserver);
CollectionAssert.AreEqual(new[] { 2 }, mockObserver.Values);
}
public void Should_push_state_on_dispatch()
{
var sut = new Store <int>(1, Reducers.Replace);
var mockObserver = new MockObserver <int>();
sut.Subscribe(mockObserver);
sut.Dispatch(new FakeAction <int>(2));
CollectionAssert.AreEqual(new[] { 1, 2 }, mockObserver.Values);
}
public void Should_push_state_to_end_of_queue_on_nested_dispatch()
{
var sut = new Store <int>(Reducers.Replace, 1);
var mockObserver = new MockObserver <int>();
sut.Subscribe(val =>
{
if (val < 5)
{
sut.Dispatch(new FakeAction <int>(val + 1));
}
mockObserver.OnNext(val);
});
CollectionAssert.AreEqual(new[] { 1, 2, 3, 4, 5 }, mockObserver.Values);
}
public void Middleware_should_be_called_for_each_action_dispatched()
{
var numberOfCalls = 0;
Middleware <int> spyMiddleware = store => next => action =>
{
numberOfCalls++;
return(next(action));
};
var sut = new Store <int>(Reducers.Replace, 1, spyMiddleware);
var mockObserver = new MockObserver <int>();
sut.Subscribe(mockObserver);
sut.Dispatch(new FakeAction <int>(2));
Assert.AreEqual(1, numberOfCalls);
CollectionAssert.AreEqual(new[] { 1, 2 }, mockObserver.Values);
}