@Test
    public void testInitPrefixUrl() {
        val configuration = new CasConfiguration();
        configuration.setLoginUrl(LOGIN_URL);
        val casClient = new CasClient(configuration);
        casClient.setCallbackUrl(CALLBACK_URL);
        assertEquals(null, configuration.getPrefixUrl());
        configuration.init();
        assertEquals(PREFIX_URL, configuration.getPrefixUrl());
    }
This class tests the {@link CasClient} class.

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