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add tests for arrCopy #2120

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Merged
jdeniau merged 1 commit into from
Jun 9, 2025
Merged

add tests for arrCopy #2120

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38 changes: 38 additions & 0 deletions __tests__/utils/arrCopy.ts
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Original file line number Diff line number Diff line change
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import { describe, it, expect } from '@jest/globals';
import arrCopy from '../../src/utils/arrCopy';

describe('arrCopy', () => {
it('should copy an array without offset', () => {
const arr = [1, 2, 3, 4];
const result = arrCopy(arr);
expect(result).toEqual([1, 2, 3, 4]);
expect(result).not.toBe(arr); // Should be a new array
});

it('should copy an array with offset', () => {
const arr = [1, 2, 3, 4, 5];
const result = arrCopy(arr, 2);
expect(result).toEqual([3, 4, 5]);
});

it('should return an empty array if offset >= arr.length', () => {
const arr = [1, 2, 3];
expect(arrCopy(arr, 3)).toEqual([]);
expect(arrCopy(arr, 5)).toEqual([]);
});

it('should handle empty array', () => {
expect(arrCopy([])).toEqual([]);
expect(arrCopy([], 2)).toEqual([]);
});

it('should copy array of objects by reference', () => {
const obj1 = { a: 1 };
const obj2 = { b: 2 };
const arr = [obj1, obj2];
const result = arrCopy(arr);
expect(result).toEqual([obj1, obj2]);
expect(result[0]).toBe(obj1);
expect(result[1]).toBe(obj2);
});
});