assertEquals("UTF-8", request.encoding());
        assertEquals(1024 * 1024, request.threshold());
        assertNull(request.proxy());
        assertNull(request.body());
    }

    @Test
    public void testProxyMethod() {
        CurlRequest request = new CurlRequest(Method.GET, "https://example.com");
        Proxy proxy = Proxy.NO_PROXY;

        CurlRequest result = request.proxy(proxy);