@Test
        void verifyClientNoCode() throws Throwable {
            val request = getHttpRequestForEndpoint(OidcConstants.ACCESS_TOKEN_URL);
            val response = new MockHttpServletResponse();
            oidcAccessTokenEndpointController.handleRequest(request, response);
            assertEquals(HttpStatus.BAD_REQUEST.value(), response.getStatus());
            oidcAccessTokenEndpointController.handleGetRequest(request, response);
            assertEquals(HttpStatus.BAD_REQUEST.value(), response.getStatus());
        }
This is {@link OidcAccessTokenEndpointControllerTests}.

@author Misagh Moayyed
@since 6.3.0
support/cas-server-support-oidc/src/test/java/org/apereo/cas/oidc/web/controllers/token/OidcAccessTokenEndpointControllerTests.java