private static Stream<String> goodDoubleDotPatterns() {
        return Stream.of(
                "..a", "a..", "a..b",
                "/..a", "/a..", "/a..b",
                "..a/", "a../", "a..b/",
                "/..a/", "/a../", "/a..b/"
        );
    }
{@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