public void WhenProvidingDynamicValue_ThenBindingCanResolveIt()
{
using (var context = this.binding.CreateDynamicContext())
{
// Without the dynamic context.
var result = this.binding.Evaluate();
Assert.True(result);
Assert.Null(this.binding.Value.Bar);
// With the dynamic context.
var bar = new Bar();
context.AddExport<IBar>(bar);
result = this.binding.Evaluate(context);
Assert.True(result);
Assert.NotNull(this.binding.Value.Bar);
}
}
public void WhenDisposingDynamicContext_ThenResolvedValueRemainsValid()
{
var context = this.binding.CreateDynamicContext();
// With the dynamic context.
var bar = new Bar();
context.AddExport<IBar>(bar);
var result = this.binding.Evaluate(context);
Assert.True(result);
Assert.NotNull(this.binding.Value.Bar);
context.Dispose();
Assert.NotNull(this.binding.Value.Bar);
}
public void WhenCompositionServiceProvidesExportProvider_ThenChainsDynamicContextWithIt()
{
var catalog = new TypeCatalog(typeof(Foo));
var container = new CompositionContainer(catalog);
var compositionService = new Mock<INuPatternCompositionService>();
compositionService.Setup(x => x.GetExportedValue<ExportProvider>()).Returns(container);
compositionService.Setup(x => x.GetExports<IFoo, IComponentMetadata>())
.Returns(new[]
{
new Lazy<IFoo, IComponentMetadata>(
() => new Foo(),
Mocks.Of<IComponentMetadata>().First(m =>
m.CatalogName == Catalog.DefaultCatalogName &&
m.Id == "Foo"))
});
var binding = new DynamicBinding<IFoo>(new DelegatingCompositionService(compositionService.Object), "Foo");
// Make sure the mocking so far is going good.
Assert.True(binding.Evaluate());
using (var context = binding.CreateDynamicContext())
{
var bar = new Bar();
context.AddExport<IBar>(bar);
var result = binding.Evaluate(context);
Assert.True(result);
Assert.NotNull(binding.Value.Bar);
}
}
public void WhenDisposingDynamicContextAndReevaluating_ThenResolvedValueBecomesInvalid()
{
using (var context = this.binding.CreateDynamicContext())
{
var bar = new Bar();
context.AddExport<IBar>(bar);
var result = this.binding.Evaluate(context);
Assert.True(result);
Assert.NotNull(this.binding.Value.Bar);
}
this.binding.Evaluate();
Assert.Null(this.binding.Value.Bar);
}
public void WhenAddedExportExistsOnBase_ThenOverridesIt()
{
var catalog = new TypeCatalog(typeof(Foo), typeof(Bar));
var container = new CompositionContainer(catalog);
var compositionService = new NuPatternCompositionService(container);
var binding = new DynamicBinding<IFoo>(new DelegatingCompositionService(compositionService), "Foo");
Assert.True(binding.Evaluate());
Assert.NotNull(binding.Value.Bar);
using (var context = binding.CreateDynamicContext())
{
var bar = new Bar();
context.AddExport<IBar>(bar);
var result = binding.Evaluate(context);
Assert.True(result);
Assert.NotNull(binding.Value.Bar);
Assert.Same(bar, binding.Value.Bar);
}
}