@BeforeEach
    void initialize() {
        this.defaultRegistry = new DefaultTicketRegistry(
            mock(TicketSerializationManager.class), new DefaultTicketCatalog(),
            mock(ConfigurableApplicationContext.class));
    }
Unit test for {@link TicketRegistryHealthIndicator} class.

@author Marvin S. Addison
@since 3.5.0
core/cas-server-core-monitor/src/test/java/org/apereo/cas/monitor/SessionHealthIndicatorTests.java