@ParameterizedTest
    @EnumSource(Mode.class)
    void shouldNormalizeSpace(Mode mode) {
        assertAccepted(parse(mode, "/ ? "), "/%20", "+");
        assertAccepted(parse(mode, "/%20?%20"), "/%20", "+");
    }
{@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