@Test
    void defaultRequestContextStorageProvider() throws Throwable {
        assumeThat(System.getProperty("com.linecorp.armeria.requestContextStorageProvider")).isNull();

        final RequestContextStorage actual = Flags.requestContextStorageProvider().newStorage();
        assertThat(actual).isEqualTo(RequestContextStorage.threadLocal());
    }
Makes sure OpenSSL SSLEngine is used instead of JDK SSLEngine while running tests
on Linux, Windows and OS X.
core/src/test/java/com/linecorp/armeria/common/FlagsTest.java