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);
}
}
void Compose()
{
StaticPart.App = App; // store in static property
try
{
Composer = MefComposer.ComposeWithPlugins(this);
}
catch (Exception ex)
{
Logger.Log(string.Format("Error loading with plugins: {0}", ex.Message));
if (Composer != null)
{
Composer.Dispose();
}
try
{
Logger.Log("Loading without plugins.");
Composer = MefComposer.ComposeWithoutPlugins(this);
}
catch (Exception ex2)
{
Logger.Log(string.Format("Error loading: {0}", ex2.Message));
if (Composer != null)
{
Composer.Dispose();
}
Composer = null;
}
}
}
private void assertExportsAndDispose(MefComposer 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);
CompositionHost compositionHost = lastComposedEventArgs.Target.CreateContainer();
List <IParent> parts = new List <IParent>(3);
parts.AddRange(compositionHost.GetExports <IParent>());
Assert.AreEqual(3, parts.Count);
Helper.AssertValidParents(parts);
composer.Dispose();
Helper.AssertValidParents(parts);
compositionHost.Dispose();
Helper.AssertDisposedParents(parts);
}
public void TestMefDirectoryPartWatcher()
{
using (Helper.GetTempDir(
nameof(MefComposerTests.TestMefDirectoryPartWatcher),
out string tempDir)) {
// Shared
MefComposer composer = new MefComposer(Helper.NewParentConventions(true));
assertWithMefDirectoryPartWatcher(
new MefDirectoryPartWatcher(new DirectoryWatcher(tempDir, "*.dll")),
composer);
// Not Shared
composer = new MefComposer(Helper.NewParentConventions(false));
assertWithMefDirectoryPartWatcher(
new MefDirectoryPartWatcher(new DirectoryWatcher(tempDir, "*.dll")),
composer);
}
}
public void TestMefAssemblyPartProvider()
{
// Shared
MefComposer composer = new MefComposer(Helper.NewParentConventions(true));
composer.Participate(
new MefAssemblyPartProvider(
GetType()
.Assembly.AsSingle()));
assertExportsAndDispose(composer);
// Not Shared
composer = new MefComposer(Helper.NewParentConventions(false));
composer.Participate(
new MefAssemblyPartProvider(
GetType()
.Assembly.AsSingle()));
assertExportsAndDispose(composer);
}
static void Main(string[] args)
{
string path;
if (args.Length > 0)
{
var currentDirectory = Environment.CurrentDirectory;
path = Path.Combine(currentDirectory, args[0]);
}
else
{
path = "test.my.less";
}
var chirp = MefComposer
.CreateComposerWithPlugins()
.GetExport <Chirp>();
Console.WriteLine(chirp.Value.RunDependencies(path));
Console.ReadLine();
}
private void assertWithMefDirectoryPartWatcher(MefDirectoryPartWatcher contributor, MefComposer composer)
{
int compositionRequestedCount = 0;
contributor.CompositionRequested += (sender, compositionEventArgs) => ++ compositionRequestedCount;
composer.Participate(contributor);
assertExportsAndDispose(composer);
Assert.AreEqual(0, compositionRequestedCount); // Zero in both cases
}