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>());
}
public void GetExportWithTMetadata(IContainer container)
{
var v3Container = (TestUtilities.V3ContainerWrapper)container;
var v1Container = new MefV1.Hosting.CompositionContainer(v3Container.ExportProvider.AsExportProvider());
var tree = v1Container.GetExport <Tree, IMetadata>();
Assert.Equal("b", tree.Metadata.A);
Assert.Equal("c", tree.Metadata.B);
}
public void GetExportWithMetadataDictionary(IContainer container)
{
var v3Container = (TestUtilities.V3ContainerWrapper)container;
var v1Container = new MefV1.Hosting.CompositionContainer(v3Container.ExportProvider.AsExportProvider());
var tree = v1Container.GetExport <Tree, IDictionary <string, object> >();
Assert.Equal("b", tree.Metadata["A"]);
Assert.False(tree.Metadata.ContainsKey("B"));
}
public void MefContainer_respects_shared_creation_policy()
{
// check that MEF respects the shared policy
var mefCatalog = new System.ComponentModel.Composition.Hosting.AssemblyCatalog(typeof(DerivedService).Assembly);
var mefContainer = new System.ComponentModel.Composition.Hosting.CompositionContainer(mefCatalog);
// via GetExport
var exp1 = mefContainer.GetExport <IBaseService>().Value;
var exp2 = mefContainer.GetExport <IDerivedService>().Value;
Assert.AreEqual(exp1.InstanceID, exp2.InstanceID);
// via SatisfyImportsOnce
var use1 = new UseBaseService();
mefContainer.SatisfyImportsOnce(use1);
Assert.AreEqual(exp1.InstanceID, use1.Service.InstanceID);
var use2 = new UseDerivedService();
mefContainer.SatisfyImportsOnce(use2);
Assert.AreEqual(exp1.InstanceID, use2.Service.InstanceID);
}
