_ * owner.superClass >> superClassMetaData
        _ * owner.interfaces >> []
        1 * superClassMetaData.findDeclaredMethod('method()') >> null
        _ * superClassMetaData.superClass >> ancestorClassMetaData
        _ * superClassMetaData.interfaces >> []
        1 * ancestorClassMetaData.findDeclaredMethod('method()') >> overriddenMethod
    }

    def locatesOverriddenMethodInInterfaceOfAncestorClass() {

        while (!queue.isEmpty()) {
            ClassMetaData cl = queue.removeFirst();
            if (cl == null) {
                continue;
            }
            MethodMetaData overriddenMethod = cl.findDeclaredMethod(overrideSignature);
            if (overriddenMethod != null) {
                return overriddenMethod;
            }
            queue.add(cl.getSuperClass());
            queue.addAll(cl.getInterfaces());

        for (MethodMetaData declaredMethod : declaredMethods) {
            names.add(declaredMethod.getName());
        }
        return names;
    }

    public MethodMetaData findDeclaredMethod(String signature) {
        for (MethodMetaData method : declaredMethods) {
            if (method.getOverrideSignature().equals(signature)) {
                return method;
            }
        }