internal static IContainer CreateContainerV1(params Type[] parts)
{
Requires.NotNull(parts, nameof(parts));
var catalog = new MefV1.Hosting.TypeCatalog(parts);
return(CreateContainerV1(catalog));
}
public void GetExportsForOneExportFromAlternateExportProvider(IContainer container)
{
var exportProvider = GetMefV1Container(container);
// This is delicate work to test what we want.
// We need to arrange for our own ExportProvider shim to be called prior to the MEFv1 version
// that will ultimately provide the answer. The CompositionContainer respects the order of
// ExportProviders as they are provided in its constructor. So we pass in our own exportProvider
// first, then the real MEFv1 export provider that will have the answer to the export queries.
// In order to get a catalog to be acceptable as a second parameter, we have to turn it into
// an ExportProvider ourselves.
var v1Catalog = new MefV1.Hosting.TypeCatalog(typeof(Apple));
var v1CatalogExportProvider = new MefV1.Hosting.CatalogExportProvider(v1Catalog);
var childContainer = new MefV1.Hosting.CompositionContainer(exportProvider, v1CatalogExportProvider);
v1CatalogExportProvider.SourceProvider = childContainer;
var exports = childContainer.GetExports <Apple>();
Assert.Equal(1, exports.Count());
Assert.NotNull(exports.First().Value);
var export = childContainer.GetExport <Apple>();
Assert.NotNull(export.Value);
Assert.Throws <MefV1.ImportCardinalityMismatchException>(() => childContainer.GetExport <Tree>());
}
