#[cfg(test)]
mod tests {
    use pyority_queue::backing::indexed::{IndexedBacking, IndexedBinaryHeap};

    #[test]
    fn test_indexed_binary_heap_manual_creation() {
        let mut heap = IndexedBinaryHeap::new();
        heap.set(4, 0.5);
        heap.set(-3, 0.01);
        heap.set(6, 0.9);
        heap.set(1, 0.2);
        assert_eq!(heap.len(), 4);
        assert_eq!(heap.pop(), Some(-3));
        assert_eq!(heap.pop(), Some(1));
        assert_eq!(heap.pop(), Some(4));
        assert_eq!(heap.pop(), Some(6));
        assert_eq!(heap.pop(), None);
    }

    #[test]
    fn test_indexed_binary_heap_from_iter() {
        let mut heap = IndexedBinaryHeap::from_iter(vec![("c", 7), ("a", 3), ("b", 6), ("d", 9)]);
        assert_eq!(heap.len(), 4);
        assert_eq!(heap.pop(), Some("a"));
        assert_eq!(heap.pop(), Some("b"));
        assert_eq!(heap.pop(), Some("c"));
        assert_eq!(heap.pop(), Some("d"));
        assert_eq!(heap.pop(), None);
    }
}