public IAssembly GetUnitTestAssembly( UnitTestHarness testHarness, Assembly assemblyReference) { if (_assemblyLookup.ContainsKey(assemblyReference)) return _assemblyLookup[assemblyReference]; var feature = _featureLookup[assemblyReference]; var ass = new TestAssembly(this,testHarness,feature); _assemblyLookup[assemblyReference] = ass; return ass; }