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