PathableClassLoader emptyLoader = new PathableClassLoader(null);
PathableClassLoader parentLoader = new PathableClassLoader(null);
parentLoader.useSystemLoader("junit.");
parentLoader.addLogicalLib("commons-logging");
parentLoader.addLogicalLib("testclasses");
// hack to ensure that the testcase classloader can't see
// the custom MyLogFactoryImpl
parentLoader.useExplicitLoader(MY_LOG_PKG + ".", emptyLoader);
URL propsEnableUrl = new URL(baseUrl, "props_enable_tccl/");