public static void DefaultContextOverrideTPA()
{
var assemblyNameStr = "System.Runtime.Loader.Noop.Assembly.dll";
var lcDefault = AssemblyLoadContext.Default;
// Load the assembly in custom load context
OverrideDefaultLoadContext olc = new OverrideDefaultLoadContext();
var asmTargetAsm = olc.LoadFromAssemblyPath(Path.Combine(s_loadFromPath, assemblyNameStr));
var loadedContext = AssemblyLoadContext.GetLoadContext(asmTargetAsm);
// LoadContext of the assembly should be the custom context and not DefaultContext
Assert.NotEqual(lcDefault, olc);
Assert.Equal(olc, loadedContext);
// Get reference to the helper method that will load assemblies (actually, resolve them)
// from DefaultContext
Type type = asmTargetAsm.GetType("System.Runtime.Loader.Tests.TestClass", true);
var method = System.Reflection.TypeExtensions.GetMethod(type, "LoadFromDefaultContext");
// Load System.Runtime - since this is on TPA, it should get resolved from our custom load context
// since the Load method has been implemented to override TPA assemblies.
var assemblyName = "System.Runtime, Version=4.0.0.0";
olc.LoadedFromContext = false;
Assembly asmLoaded = (Assembly)method.Invoke(null, new object[] { assemblyName });
loadedContext = AssemblyLoadContext.GetLoadContext(asmLoaded);
// Confirm assembly did not load from DefaultContext
Assert.NotEqual(lcDefault, loadedContext);
Assert.Equal(olc, loadedContext);
Assert.Equal(true, olc.LoadedFromContext);
// Now, do the same for an assembly that we explicitly had loaded in DefaultContext
// in the caller of this method and ALSO loaded in the current load context. We should get it from our LoadContext,
// without invoking the Load override, since it is already loaded.
assemblyName = "System.Runtime.Loader.Noop.Assembly";
olc.LoadedFromContext = false;
Assembly asmLoaded2 = (Assembly)method.Invoke(null, new object[] { assemblyName });
loadedContext = AssemblyLoadContext.GetLoadContext(asmLoaded2);
// Confirm assembly loaded from the intended LoadContext
Assert.NotEqual(lcDefault, loadedContext);
Assert.Equal(olc, loadedContext);
Assert.Equal(false, olc.LoadedFromContext);
}
public static void DefaultContextOverrideTPA()
{
var assemblyNameStr = "System.Runtime.Loader.Noop.Assembly.dll";
var lcDefault = AssemblyLoadContext.Default;
// Load the assembly in custom load context
OverrideDefaultLoadContext olc = new OverrideDefaultLoadContext();
var asmTargetAsm = olc.LoadFromAssemblyPath(Path.Combine(s_loadFromPath, assemblyNameStr));
var loadedContext = AssemblyLoadContext.GetLoadContext(asmTargetAsm);
// LoadContext of the assembly should be the custom context and not DefaultContext
Assert.NotEqual(lcDefault, olc);
Assert.Equal(olc, loadedContext);
// Get reference to the helper method that will load assemblies (actually, resolve them)
// from DefaultContext
Type type = asmTargetAsm.GetType("System.Runtime.Loader.Tests.TestClass");
var method = System.Reflection.TypeExtensions.GetMethod(type, "LoadFromDefaultContext");
// Load System.Runtime - since this is on TPA, it should get resolved from our custom load context
// since the Load method has been implemented to override TPA assemblies.
var assemblyName = "System.Runtime, Version=4.0.0.0";
olc.LoadedFromContext = false;
Assembly asmLoaded = (Assembly)method.Invoke(null, new object[] {assemblyName});
loadedContext = AssemblyLoadContext.GetLoadContext(asmLoaded);
// Confirm assembly did not load from DefaultContext
Assert.NotEqual(lcDefault, loadedContext);
Assert.Equal(olc, loadedContext);
Assert.Equal(true, olc.LoadedFromContext);
// Now, do the same from an assembly that we explicitly had loaded in DefaultContext
// in the caller of this method and ALSO loaded in the current load context. We should get it from our LoadContext,
// without invoking the Load override, since it is already loaded.
assemblyName = "System.Runtime.Loader.Noop.Assembly";
olc.LoadedFromContext = false;
Assembly asmLoaded2 = (Assembly)method.Invoke(null, new object[] {assemblyName});
loadedContext = AssemblyLoadContext.GetLoadContext(asmLoaded2);
// Confirm assembly loaded from the intended LoadContext
Assert.NotEqual(lcDefault, loadedContext);
Assert.Equal(olc, loadedContext);
Assert.Equal(false, olc.LoadedFromContext);
}