assertEquals(3, stats.totalFailures);
        assertEquals(3, stats.consecutiveFailures);
    }

    @Test
    @DisplayName("Test requests rejected when circuit is open")
    void testRequestsRejectedWhenOpen() {
        // Open the circuit
        circuitBreaker.tripBreaker();

        assertThrows(SimpleCircuitBreaker.CircuitBreakerOpenException.class, () -> circuitBreaker.call(() -> "should not execute"));