public void chooses_most_specific_adapter()
{
var specificRegionAdapterMock = new Mock<IRegionAdapter>();
specificRegionAdapterMock
.SetupGet(adapter => adapter.SupportedType)
.Returns(typeof (FrameworkElement));
specificRegionAdapterMock
.Setup(adapter => adapter.AdaptView(_view))
.Returns(_region);
// no invocation expected
var generalRegionAdapterMock = new Mock<IRegionAdapter>(MockBehavior.Strict);
generalRegionAdapterMock
.SetupGet(adapter => adapter.SupportedType)
.Returns(typeof (DependencyObject));
var regionFactory =
new RegionFactory(new[]
{
generalRegionAdapterMock.Object,
specificRegionAdapterMock.Object
});
var createdRegion = regionFactory.CreateRegion(_view);
Assert.AreSame(_region, createdRegion);
}
public void chooses_an_adapter_supporting_supertype()
{
var generalRegionAdapterMock = new Mock<IRegionAdapter>();
generalRegionAdapterMock
.SetupGet(adapter => adapter.SupportedType)
.Returns(typeof (DependencyObject));
generalRegionAdapterMock
.Setup(adapter => adapter.AdaptView(_view))
.Returns(_region);
var regionFactory = new RegionFactory(new[] {generalRegionAdapterMock.Object});
var createdRegion = regionFactory.CreateRegion(_view);
Assert.AreSame(_region, createdRegion);
}
public void when_matching_adapter_exists_a_region_is_created()
{
var regionAdapterMock = new Mock<IRegionAdapter>();
regionAdapterMock
.SetupGet(adapter => adapter.SupportedType)
.Returns(typeof (FrameworkElement));
regionAdapterMock
.Setup(adapter => adapter.AdaptView(_view))
.Returns(_region);
var regionFactory = new RegionFactory(new[] {regionAdapterMock.Object});
var createdRegion = regionFactory.CreateRegion(_view);
Assert.AreSame(_region, createdRegion);
}
public void when_no_matching_adapter_is_found_an_exception_is_thrown()
{
var regionFactory = new RegionFactory(new IRegionAdapter[] {});
Assert.Throws<InvalidOperationException>(() => regionFactory.CreateRegion(_view));
}