// Then
            assertEquals(1024L * 1024L * 1024L * 60L, used); // 60GB used
        }

        @Test
        @DisplayName("Should maintain immutability")
        void shouldMaintainImmutability() {
            // Given
            long capacity = 1000L;
            long free = 500L;
            TestAllocInfo allocInfo = new TestAllocInfo(capacity, free);