public TestBase(int numContexts)
{
_contexts = new ResourceAssemblyLoadContext[numContexts];
_testClassTypes = new Type[numContexts];
_checker = new CollectibleChecker(numContexts);
}
private static WeakReference <AssemblyLoadContext> CreateCollectible(CollectibleChecker checker)
{
var expectedContext = new ResourceAssemblyLoadContext(true);
checker.SetAssemblyLoadContext(0, expectedContext);
return(new WeakReference <AssemblyLoadContext>(expectedContext));
}
public static void Unload_CollectibleWithNoAssemblyLoaded()
{
// Use a collectible ALC + Unload
// Check that we receive the Unloading event
var checker = new CollectibleChecker(1);
CreateAndLoadContext(checker);
checker.GcAndCheck();
}
static void CreateAndLoadContext(CollectibleChecker checker)
{
var alc = new ResourceAssemblyLoadContext(true);
checker.SetAssemblyLoadContext(0, alc);
alc.Unload();
// Check that any attempt to load an assembly after an explicit Unload will fail
Assert.Throws <InvalidOperationException>(() => alc.LoadFromAssemblyPath(Path.GetFullPath("none.dll")));
}
public static void Finalizer_CollectibleWithNoAssemblyLoaded()
{
// Use a collectible ALC, let the finalizer call Unload
// Check that we receive the Unloading event
var checker = new CollectibleChecker(1);
// Create the ALC in another method to allow the finalizer to run
WeakReference <AssemblyLoadContext> weakRef = CreateCollectible(checker);
checker.GcAndCheck();
// Check that the ALC was also released
AssemblyLoadContext alc;
Assert.False(weakRef.TryGetTarget(out alc));
}
