private static void assertAccepted(RequestTargetWithRawPath res,
                                       String expectedPath,
                                       @Nullable String expectedQuery) {
        assertAccepted(res, expectedPath, expectedQuery, null);
    }
{@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