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/*
* SPDX-FileCopyrightText: hazelnoot and other Sharkey contributors
* SPDX-License-Identifier: AGPL-3.0-only
*/
import { diffArrays, diffArraysSimple } from '@/misc/diff-arrays.js';
describe(diffArrays, () => {
it('should return empty result when both inputs are null', () => {
const result = diffArrays(null, null);
expect(result.added).toHaveLength(0);
expect(result.removed).toHaveLength(0);
});
it('should return empty result when both inputs are empty', () => {
const result = diffArrays([], []);
expect(result.added).toHaveLength(0);
expect(result.removed).toHaveLength(0);
});
it('should remove before when after is empty', () => {
const result = diffArrays([1, 2, 3], []);
expect(result.added).toHaveLength(0);
expect(result.removed).toEqual([1, 2, 3]);
});
it('should deduplicate before when after is empty', () => {
const result = diffArrays([1, 1, 2, 2, 3], []);
expect(result.added).toHaveLength(0);
expect(result.removed).toEqual([1, 2, 3]);
});
it('should add after when before is empty', () => {
const result = diffArrays([], [1, 2, 3]);
expect(result.added).toEqual([1, 2, 3]);
expect(result.removed).toHaveLength(0);
});
it('should deduplicate after when before is empty', () => {
const result = diffArrays([], [1, 1, 2, 2, 3]);
expect(result.added).toEqual([1, 2, 3]);
expect(result.removed).toHaveLength(0);
});
it('should return diff when both have values', () => {
const result = diffArrays(
['a', 'b', 'c', 'd'],
['a', 'c', 'e', 'f'],
);
expect(result.added).toEqual(['e', 'f']);
expect(result.removed).toEqual(['b', 'd']);
});
});
describe(diffArraysSimple, () => {
it('should return false when both inputs are null', () => {
const result = diffArraysSimple(null, null);
expect(result).toBe(false);
});
it('should return false when both inputs are empty', () => {
const result = diffArraysSimple([], []);
expect(result).toBe(false);
});
it('should return true when before is populated and after is empty', () => {
const result = diffArraysSimple([1, 2, 3], []);
expect(result).toBe(true);
});
it('should return true when before is empty and after is populated', () => {
const result = diffArraysSimple([], [1, 2, 3]);
expect(result).toBe(true);
});
it('should return true when values have changed', () => {
const result = diffArraysSimple(
['a', 'a', 'b', 'c'],
['a', 'b', 'c', 'd'],
);
expect(result).toBe(true);
});
it('should return false when values have not changed', () => {
const result = diffArraysSimple(
['a', 'a', 'b', 'c'],
['a', 'b', 'c', 'c'],
);
expect(result).toBe(false);
});
});
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