@Test
    void verifyMissingAction() throws Throwable {
        val context = MockRequestContext.create(applicationContext);
        WebUtils.putGraphicalUserAuthenticationUsername(context, "casuser");
        val event = prepareLoginAction.execute(context);
        assertNull(event);
    }
This is {@link PrepareForGraphicalAuthenticationActionTests}.

@author Misagh Moayyed
@since 5.3.0
support/cas-server-support-gua/src/test/java/org/apereo/cas/web/flow/PrepareForGraphicalAuthenticationActionTests.java