public async Task RegionWillNotGetCreatedTwiceWhenThereAreMoreRegions()
{
await ExecuteOnUIThread(() =>
{
var control1 = new MockFrameworkElement();
var control2 = new MockFrameworkElement();
var accessor = new MockRegionManagerAccessor
{
GetRegionName = d => d == control1 ? "Region1" : "Region2"
};
var adapter = new MockRegionAdapter() { Accessor = accessor };
var behavior1 = DelayedRegionCreationBehaviorFixture.GetBehavior(control1, accessor, adapter);
var behavior2 = DelayedRegionCreationBehaviorFixture.GetBehavior(control2, accessor, adapter);
behavior1.Attach();
behavior2.Attach();
accessor.UpdateRegions();
Assert.IsTrue(adapter.CreatedRegions.Contains("Region1"));
Assert.IsTrue(adapter.CreatedRegions.Contains("Region2"));
Assert.AreEqual(1, adapter.CreatedRegions.Count((name) => name == "Region2"));
});
}
private static DelayedRegionCreationBehavior GetBehavior(DependencyObject control, MockRegionManagerAccessor accessor, MockRegionAdapter adapter)
{
var mappings = new RegionAdapterMappings();
mappings.RegisterMapping(control.GetType(), adapter);
var behavior = new DelayedRegionCreationBehavior(mappings) { RegionManagerAccessor = accessor, TargetElement = control };
return behavior;
}
public void RegionWillNotGetCreatedTwiceWhenThereAreMoreRegions()
{
var control1 = new MockFrameworkElement();
var control2 = new MockFrameworkElement();
var accessor = new MockRegionManagerAccessor
{
GetRegionName = d => d == control1 ? "Region1" : "Region2"
};
var adapter = new MockRegionAdapter();
adapter.Accessor = accessor;
var behavior1 = this.GetBehavior(control1, accessor, adapter);
var behavior2 = this.GetBehavior(control2, accessor, adapter);
behavior1.Attach();
behavior2.Attach();
accessor.UpdateRegions();
Assert.IsTrue(adapter.CreatedRegions.Contains("Region1"));
Assert.IsTrue(adapter.CreatedRegions.Contains("Region2"));
Assert.AreEqual(1, adapter.CreatedRegions.Count((name) => name == "Region2"));
}
public void RegisterAMappingThatAlreadyExistsThrows()
{
var regionAdapterMappings = new RegionAdapterMappings();
var regionAdapter = new MockRegionAdapter();
regionAdapterMappings.RegisterMapping(typeof(ItemsControl), regionAdapter);
regionAdapterMappings.RegisterMapping(typeof(ItemsControl), regionAdapter);
}
public void RegisterAMappingThatAlreadyExistsThrows()
{
var regionAdapterMappings = new RegionAdapterMappings();
var regionAdapter = new MockRegionAdapter();
regionAdapterMappings.RegisterMapping(typeof(ItemsControl), regionAdapter);
Assert.ThrowsException<InvalidOperationException>(() => regionAdapterMappings.RegisterMapping(typeof(ItemsControl), regionAdapter));
}
public void ShouldGetMappingForDerivedTypesThanTheRegisteredOnes()
{
var regionAdapterMappings = new RegionAdapterMappings();
var regionAdapter = new MockRegionAdapter();
regionAdapterMappings.RegisterMapping(typeof(ItemsControl), regionAdapter);
var returnedAdapter = regionAdapterMappings.GetMapping(typeof(ItemsControlDescendant));
Assert.IsNotNull(returnedAdapter);
Assert.AreSame(regionAdapter, returnedAdapter);
}
public void ShouldGetRegisteredMapping()
{
var regionAdapterMappings = new RegionAdapterMappings();
Type registeredType = typeof(ItemsControl);
var regionAdapter = new MockRegionAdapter();
regionAdapterMappings.RegisterMapping(registeredType, regionAdapter);
var returnedAdapter = regionAdapterMappings.GetMapping(registeredType);
Assert.IsNotNull(returnedAdapter);
Assert.AreSame(regionAdapter, returnedAdapter);
}
public void ShouldGetTheMostSpecializedMapping()
{
var regionAdapterMappings = new RegionAdapterMappings();
var genericAdapter = new MockRegionAdapter();
var specializedAdapter = new MockRegionAdapter();
regionAdapterMappings.RegisterMapping(typeof(ItemsControl), genericAdapter);
regionAdapterMappings.RegisterMapping(typeof(ItemsControlDescendant), specializedAdapter);
var returnedAdapter = regionAdapterMappings.GetMapping(typeof(ItemsControlDescendant));
Assert.IsNotNull(returnedAdapter);
Assert.AreSame(specializedAdapter, returnedAdapter);
}
public void NullControlThrows()
{
var regionAdapterMappings = new RegionAdapterMappings();
var regionAdapter = new MockRegionAdapter();
regionAdapterMappings.RegisterMapping(null, regionAdapter);
}
public void NullControlThrows()
{
var regionAdapterMappings = new RegionAdapterMappings();
var regionAdapter = new MockRegionAdapter();
Assert.ThrowsException<ArgumentNullException>(() => regionAdapterMappings.RegisterMapping(null, regionAdapter));
}