@Test
    void verifyObserveWarn() {
        val monitor = new MemoryMonitorHealthIndicator(100);
        assertEquals(Status.DOWN, monitor.health().getStatus());
    }
Unit test for {@link MemoryMonitorHealthIndicator} class.

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