}

    @Test
    @DisplayName("Test all constants are public static final")
    void testConstantsArePublicStaticFinal() {
        Field[] fields = SecurityInfo.class.getDeclaredFields();

        for (Field field : fields) {
            int modifiers = field.getModifiers();
            assertTrue(Modifier.isPublic(modifiers), "Field " + field.getName() + " should be public");

    void interfaceStructure() {
        Class<?> c = SpnegoConstants.class;
        assertTrue(c.isInterface(), "SpnegoConstants must be an interface");
        assertEquals(4, c.getDeclaredFields().length, "Unexpected number of fields");
        assertEquals(0, c.getDeclaredMethods().length, "No declared methods expected");
        assertEquals(0, c.getDeclaredConstructors().length, "Interfaces have no constructors");

  }

  private static ImmutableSet<Field> httpHeadersFields() {
    ImmutableSet.Builder<Field> builder = ImmutableSet.builder();
    for (Field field : HttpHeaders.class.getDeclaredFields()) {
      /*
       * Coverage mode generates synthetic fields.  If we ever add private
       * fields, they will cause similar problems, and we may want to switch
       * this check to isAccessible().
       */

        assertEquals(message, exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void testSerialVersionUID() {
        assertNotNull(CurlException.class.getDeclaredFields());
        boolean hasSerialVersionUID = false;
        try {
            CurlException.class.getDeclaredField("serialVersionUID");
            hasSerialVersionUID = true;
        } catch (NoSuchFieldException e) {

    void testNoMembers() {
        // Assert
        assertEquals(0, SessionSetupHandler.class.getDeclaredMethods().length, "No methods expected");
        assertEquals(0, SessionSetupHandler.class.getDeclaredFields().length, "No fields expected");
        assertEquals(0, SessionSetupHandler.class.getDeclaredClasses().length, "No nested types expected");
    }

    @ParameterizedTest(name = "Implementation is instance: {0}")

            if (cls.isArray()) {
                evaluateArray(target);
            } else if (isQualifiedForInterpolation(cls)) {
                Field[] fields = FIELDS_BY_CLASS.computeIfAbsent(cls, k -> cls.getDeclaredFields());

                for (Field field : fields) {
                    Class<?> type = field.getType();
                    if (isQualifiedForInterpolation(field, type)) {

                this.isArray = clazz.isArray();
                List<CacheField> fields = new ArrayList<>();
                if (isQualifiedForInterpolation) {
                    for (Field currentField : clazz.getDeclaredFields()) {
                        Class<?> type = currentField.getType();
                        if (isQualifiedForInterpolation(currentField, type)) {
                            if (String.class == type) {

            return;
        }

        Class<?> clazz = node.getClass();
        while (clazz != null && !clazz.equals(Object.class)) {
            for (Field field : clazz.getDeclaredFields()) {
                // Skip static fields and synthetic fields
                if (Modifier.isStatic(field.getModifiers()) || field.isSynthetic()) {
                    continue;
                }

     */
    @Test
    @DisplayName("Test all fields are public")
    public void testAllFieldsArePublic() {
        // Get all declared fields
        Field[] fields = ServerData.class.getDeclaredFields();

        // Verify we have the expected number of fields
        assertEquals(19, fields.length);

        // Verify all fields are public
        for (Field field : fields) {

     *
     * @param clazz
     *            the target class or interface
     */
    protected void addFieldDescs(final Class<?> clazz) {
        for (final Field field : clazz.getDeclaredFields()) {
            final String fname = field.getName();
            if (fieldDescCache.containsKey(fname)) {
                continue;
            }
            setFieldAccessible(field);