@Test
    public void testMissingCallbackUrl() {
        val client = new CasProxyReceptor();
        TestsHelper.initShouldFail(client,
                "callbackUrl cannot be blank: set it up either on this IndirectClient or on the global Config");
    }
This class tests the {@link CasProxyReceptor} class.

@author Jerome Leleu
@since 1.4.0
pac4j-cas/src/test/java/org/pac4j/cas/client/CasProxyReceptorTests.java