@Test
    void verifyContextInitialized() {
        listener.contextInitialized(null);
        assertFalse(DriverManager.getDrivers().hasMoreElements());
    }
This is {@link JdbcServletContextListenerTests}.

@author leeyc0
@since 6.2.0
support/cas-server-support-jdbc-drivers/src/test/java/org/apereo/cas/JdbcServletContextListenerTests.java