function assertHeapValues(heap, values) {
    const heapValues = [...heap.values()];
    assert.deepStrictEqual(heapValues, values);

}
Check that the contents of the heap match the values of the array.
@param {BinaryHeap} heap The list to check 
@param {Array} values An array of values that should match.
@throws {AssertionError} If the values in the list don't match the
     values in the array.