Function test_memory_pool_underflow

datafusion/execution/src/memory_pool/mod.rs:536–562

()

    #[test]
    fn test_memory_pool_underflow() {
        let pool = Arc::new(GreedyMemoryPool::new(50)) as _;
        let a1 = MemoryConsumer::new("a1").register(&pool);
        assert_eq!(pool.reserved(), 0);

        a1.grow(100);
        assert_eq!(pool.reserved(), 100);

        assert_eq!(a1.free(), 100);
        assert_eq!(pool.reserved(), 0);

        a1.try_grow(100).unwrap_err();
        assert_eq!(pool.reserved(), 0);

        a1.try_grow(30).unwrap();
        assert_eq!(pool.reserved(), 30);

        let a2 = MemoryConsumer::new("a2").register(&pool);
        a2.try_grow(25).unwrap_err();
        assert_eq!(pool.reserved(), 30);

        drop(a1);
        assert_eq!(pool.reserved(), 0);

        a2.try_grow(25).unwrap();
        assert_eq!(pool.reserved(), 25);
    }

    #[test]
    fn test_split() {