private void assertExportsAndDispose(MefSingletonComposer composer)
{
int composedCount = 0;
MefComposer lastComposer = null;
ComposerEventArgs <ContainerConfiguration> lastComposedEventArgs = null;
composer.Composed += (s, e) =>
{
++composedCount;
lastComposer = s as MefComposer;
lastComposedEventArgs = e;
};
Assert.AreSame(composer.Compose(), lastComposedEventArgs.Target);
Assert.AreEqual(1, composedCount);
Assert.IsNotNull(lastComposedEventArgs);
Assert.IsNotNull(lastComposedEventArgs.Target);
Assert.IsNotNull(lastComposer);
Assert.AreSame(composer, lastComposer);
IParent[] exports
= composer.ExportsList.OfType <IParent>()
.ToArray();
Helper.AssertValidParents(exports);
composer.Dispose();
if (composer.DisposeCompositionHostsWithThis)
{
Helper.AssertDisposedParents(exports);
}
else
{
Helper.AssertValidParents(exports);
}
}
private void assertWithMefDirectoryPartWatcher(
MefDirectoryPartWatcher contributor,
MefSingletonComposer composer)
{
int compositionRequestedCount = 0;
contributor.CompositionRequested += (sender, compositionEventArgs) => ++ compositionRequestedCount;
composer.Participate(contributor);
assertExportsAndDispose(composer);
Assert.AreEqual(0, compositionRequestedCount); // Zero in both cases
}
public void TestMefSingletonComposerWithDirectory()
{
using (Helper.GetTempDir(
nameof(MefSingletonComposerTests.TestMefSingletonComposerWithDirectory),
out string tempDir)) {
// Dispose
MefSingletonComposer composer = MefSingletonComposer.ForSingleType <IParent>(true);
assertWithMefDirectoryPartWatcher(
new MefDirectoryPartWatcher(new DirectoryWatcher(tempDir, "*.dll")),
composer);
// Don't dispose
composer = MefSingletonComposer.ForSingleType <IParent>(true, false);
assertWithMefDirectoryPartWatcher(
new MefDirectoryPartWatcher(new DirectoryWatcher(tempDir, "*.dll")),
composer);
}
}
public void TestMefSingletonComposerWithAssemblies()
{
MefSingletonComposer composer = MefSingletonComposer.ForSingleType <IParent>(true);
composer.Participate(
new MefAssemblyPartProvider(
GetType()
.Assembly.AsSingle()));
assertExportsAndDispose(composer);
// Don't dispose
composer = MefSingletonComposer.ForSingleType <IParent>(true, false);
composer.Participate(
new MefAssemblyPartProvider(
GetType()
.Assembly.AsSingle()));
assertExportsAndDispose(composer);
}
