utils.spec.js

import { toBool, getDeltaText, iconForDifference, diffTable, fileExists, stripHash } from '../src/utils.js';

test('toBool', () => {
	expect(toBool('1')).toBe(true);
	expect(toBool('true')).toBe(true);
	expect(toBool('yes')).toBe(true);

	expect(toBool('0')).toBe(false);
	expect(toBool('false')).toBe(false);
	expect(toBool('no')).toBe(false);
});

test('getDeltaText', () => {
	expect(getDeltaText(5000, 20000)).toBe('+5 kB (+25%)');
	expect(getDeltaText(-5000, 20000)).toBe('-5 kB (-25%)');
	expect(getDeltaText(210, 0)).toBe('+210 B (new file)');
	expect(getDeltaText(0, 0)).toBe('0 B');
	expect(getDeltaText(4875, 20000)).toBe('+4.88 kB (+24.38%)');
	expect(getDeltaText(-4875, 20000)).toBe('-4.88 kB (-24.38%)');
});

test('iconForDifference', () => {
	expect(iconForDifference(0, 5000)).toBe('');
	expect(iconForDifference(5500, 5000)).toBe('🆘');
	expect(iconForDifference(-550, 5000)).toBe('👏');
});

test('diffTable', () => {
	const files = [
		{
			filename: 'one.js',
			size: 5000,
			delta: 2500
		},
		{
			filename: 'two.js',
			size: 5000,
			delta: -2500
		},
		{
			filename: 'three.js',
			size: 300,
			delta: 0
		},
		{
			filename: 'four.js',
			size: 4500,
			delta: 9
		},
		{
			filename: 'five.js',
			size: 6500,
			delta: 0
		},
	];
	const defaultOptions = {
		showTotal: true,
		collapseUnchanged: true,
		omitUnchanged: false,
		minimumChangeThreshold: 1,
		sortBy: /** @type {const} */ ('Filename:asc')
	};

	expect(diffTable(files, { ...defaultOptions })).toMatchSnapshot();
	expect(diffTable(files, { ...defaultOptions, showTotal: false })).toMatchSnapshot();
	expect(diffTable(files, { ...defaultOptions, collapseUnchanged: false })).toMatchSnapshot();
	expect(diffTable(files, { ...defaultOptions, omitUnchanged: true })).toMatchSnapshot();
	expect(diffTable(files, { ...defaultOptions, minimumChangeThreshold: 10 })).toMatchSnapshot();
	expect(diffTable(files.map(file => ({ ...file, delta: 0 })), { ...defaultOptions })).toMatchSnapshot();

	expect(diffTable([files[2]], { ...defaultOptions })).toMatchSnapshot();

	expect(diffTable(files, { ...defaultOptions, sortBy: 'Filename:desc' })).toMatchSnapshot();
	expect(diffTable(files, { ...defaultOptions, sortBy: 'Size:asc' })).toMatchSnapshot();
	expect(diffTable(files, { ...defaultOptions, sortBy: 'Change:desc' })).toMatchSnapshot();
});

test('fileExists', async () => {
	expect(await fileExists('package.json')).toBe(true);
	expect(await fileExists('file-that-does-not-exist')).toBe(false);
});

test('stripHash', () => {
	expect(stripHash('\\b\\w{5}\\.')('foo.abcde.js')).toBe('foo.js');
	expect(stripHash('\\.(\\w{5})\\.chunk\\.js$')('foo.abcde.chunk.js')).toBe('foo.*****.chunk.js');
	expect(stripHash('')).toBe(undefined);
});