@ParameterizedTest
    @EnumSource(Mode.class)
    void shouldYieldEmptyStringForEmptyQueryAndFragment(Mode mode) {
        assertAccepted(parse(mode, "/?"), "/", "");
        if (mode == Mode.CLIENT) {
            assertAccepted(forClient("/#"), "/", null, "");
            assertAccepted(forClient("/?#"), "/", "", "");
        }
    }
{@link RequestTarget} treats the first `=` in a query parameter as `/` internally to simplify
the detection the logic. This test makes sure the `=` appeared later is not treated as `/`.
core/src/test/java/com/linecorp/armeria/internal/common/DefaultRequestTargetTest.java