### Question:
ClassLoaderWrapper { public URL getResourceAsURL(String resource) { return getResourceAsURL(resource, getClassLoaders(null)); } ClassLoaderWrapper(); URL getResourceAsURL(String resource); URL getResourceAsURL(String resource, ClassLoader classLoader); InputStream getResourceAsStream(String resource); InputStream getResourceAsStream(String resource, ClassLoader classLoader); Class<?> classForName(String name); Class<?> classForName(String name, ClassLoader classLoader);  }### Answer:
@Test void getResourceAsURL() { assertNotNull(wrapper.getResourceAsURL(JPETSTORE_PROPERTIES)); }
@Test void getResourceAsURLNotFound() { assertNull(wrapper.getResourceAsURL(RESOURCE_NOT_FOUND)); }
@Test void getResourceAsURLWithClassLoader() { assertNotNull(wrapper.getResourceAsURL(JPETSTORE_PROPERTIES, loader)); }
@Test public void getResourceAsURL() { assertNotNull(wrapper.getResourceAsURL(JPETSTORE_PROPERTIES)); }
@Test public void getResourceAsURLNotFound() { assertNull(wrapper.getResourceAsURL(RESOURCE_NOT_FOUND)); }
@Test public void getResourceAsURLWithClassLoader() { assertNotNull(wrapper.getResourceAsURL(JPETSTORE_PROPERTIES, loader)); }