@ParameterizedTest
    @EnumSource(Mode.class)
    void shouldNotDecodeSlash(Mode mode) {
        assertAccepted(parse(mode, "/%2F?%2F"), "/%2F", "%2F"); // path & query
        assertAccepted(parse(mode, "/foo%2F"), "/foo%2F"); // path only
        assertAccepted(parse(mode, "/?%2f=%2F"), "/", "%2F=%2F"); // query only
    }
{@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