Bug Report for dynamicArray - Need more test cases

[mufaddal404]

Bug Report for https://neetcode.io/problems/dynamicArray

Please describe the bug below and include any steps to reproduce the bug or screenshots if possible.

Below is the popback() method written in the solution of the problem. The method makes sure that self.length doesn't go out of bounds (becomes -ve).

In my attempt, I didn't check for that and allowed self.size (equivalent to self.length) to have negative values(that was error on my part) and my submission was successful.

I believe you guys need to add test cases to cover this bad behavior.

Below is my complete code:

class DynamicArray:
    
    def __init__(self, capacity: int):
        self.array = [None]*capacity
        self.capacity = capacity
        self.size = 0

    def get(self, i: int) -> int:
        return self.array[i]

    def set(self, i: int, n: int) -> None:
        self.array[i] = n

    def pushback(self, n: int) -> None:
        if self.size == self.capacity:
            self.resize()
        self.array[self.size] = n
        self.size += 1

    def popback(self) -> int:
        self.size -= 1
        el = self.array[self.size]
        return el

    def resize(self) -> None:
        self.capacity *= 2
        new_arr = [None] * self.capacity
        for i in range(self.size):
            new_arr[i] = self.array[i]
        self.array = new_arr

    def getSize(self) -> int:
        return self.size
    
    def getCapacity(self) -> int:
        return self.capacity