public void IsPaused()
{
var schedulerProvider = new TestSchedulerProvider();
using (var testData = new DataProviderStub())
using (var sut = new ViewModel(testData, schedulerProvider))
{
sut.IsPaused = true;
schedulerProvider.TestScheduler.Start(); //push scheduler forward
//add data after pause has started
testData.Data.AddOrUpdate(Enumerable.Range(1, 10).Select(i => new Item(i)));
schedulerProvider.TestScheduler.AdvanceBy(1);
//check no data has been pipelined
sut.BindingData.Count.Should().Be(0);
//turn pause off and check the updates have been pushed through
sut.IsPaused = false;
schedulerProvider.TestScheduler.AdvanceBy(1);
sut.BindingData.Count.Should().Be(10);
}
}
public void Binding()
{
var schedulerProvider = new TestSchedulerProvider();
using (var testData = new DataProviderStub())
using (var sut = new ViewModel(testData, schedulerProvider))
{
//Act
var items = Enumerable.Range(1, 10).Select(i => new Item(i)).ToArray();
testData.Data.AddOrUpdate(items);
schedulerProvider.TestScheduler.Start(); //push scheduler forward
//1. Check count of data
sut.BindingData.Count.Should().Be(10);
//2. Check Transform and Sort
var expectedData = items
.Select(i => new ItemViewModel(i))
.OrderByDescending(vm => vm.Item.Id);
sut.BindingData.ShouldAllBeEquivalentTo(expectedData);
}
}
