omni-tools/src/pages/list/find-most-popular/find-most-popular.service.test.ts

import { expect, describe, it } from 'vitest';
import { TopItemsList, SplitOperatorType, SortingMethod, DisplayFormat } from './service';

describe('TopItemsList function', () => {
    it('should handle sorting alphabetically ignoring case', () => {
        const input = 'Apple,banana,apple,Orange,Banana,apple';
        const result = TopItemsList('symbol', 'alphabetic', 'count', ',', input, false, true, false);
        expect(result).toEqual(
            'apple: 3\n' +
            'banana: 2\n' +
            'orange: 1'
        );
    });

    it('should handle sorting by count and not ignoring case', () => {
        const input = 'apple,banana,apple,orange,banana,apple,Banana';
        const result = TopItemsList('symbol', 'count', 'count', ',', input, false, false, false);
        expect(result).toEqual(
            'apple: 3\n' +
            'banana: 2\n' +
            'orange: 1\n' +
            'Banana: 1'
        );
    });

    it('should handle regex split operator', () => {
        const input = 'apple123banana456apple789orange012banana345apple678';
        const result = TopItemsList('regex', 'count', 'count', '\\d+', input, false, false, false);
        expect(result).toEqual(
            'apple: 3\n' +
            'banana: 2\n' +
            'orange: 1'
        );
    });

    it('should handle percentage display format', () => {
        const input = 'apple,banana,apple,orange,banana,apple';
        const result = TopItemsList('symbol', 'count', 'percentage', ',', input, false, false, false);
        expect(result).toEqual(
            'apple: 3 (50.00%)\n' +
            'banana: 2 (33.33%)\n' +
            'orange: 1 (16.67%)'
        );
    });

    it('should handle total display format', () => {
        const input = 'apple,banana,apple,orange,banana,apple';
        const result = TopItemsList('symbol', 'count', 'total', ',', input, false, false, false);
        expect(result).toEqual(
            'apple: 3 (3 / 6)\n' +
            'banana: 2 (2 / 6)\n' +
            'orange: 1 (1 / 6)'
        );
    });

    it('should handle trimming and ignoring empty items', () => {
        const input = ' apple , banana , apple , orange , banana , apple ';
        const result = TopItemsList('symbol', 'count', 'count', ',', input, true, false, true);
        expect(result).toEqual(
            'apple: 3\n' +
            'banana: 2\n' +
            'orange: 1'
        );
    });
});