public void ExportICompositionServiceFromRootRequiredImportShouldsucceed()
{
var rootCatalog = new TypeCatalog(typeof(ClassRequiresICompositionService), typeof(ClassOptionallyImportsICompositionService));
var container = new CompositionContainer(rootCatalog, CompositionOptions.ExportCompositionService);
ClassRequiresICompositionService service = container.GetExportedValue <ClassRequiresICompositionService>();
Assert.NotNull(service.CompositionService);
}
public void DontExportICompositionServiceFromRootRequiredImportShouldThrowCompositionException()
{
var rootCatalog = new TypeCatalog(typeof(ClassRequiresICompositionService), typeof(ClassOptionallyImportsICompositionService));
var container = new CompositionContainer(rootCatalog);
Assert.Throws <ImportCardinalityMismatchException>(() =>
{
ClassRequiresICompositionService service = container.GetExportedValue <ClassRequiresICompositionService>();
Assert.Null(service.CompositionService);
});
}
