test.js

/* global it */
import {expect} from 'chai';
import normalizeUrl from './index.js';

it('main', () => {
	expect(normalizeUrl('sindresorhus.com')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('sindresorhus.com ')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('sindresorhus.com.')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('SindreSorhus.com')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('sindresorhus.com', {defaultProtocol: 'https:'})).to.deep.equal('https://sindresorhus.com');
	expect(normalizeUrl('HTTP://sindresorhus.com')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('//sindresorhus.com')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com:80')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('https://sindresorhus.com:443')).to.deep.equal('https://sindresorhus.com');
	expect(normalizeUrl('ftp://sindresorhus.com:21')).to.deep.equal('ftp://sindresorhus.com');
	expect(normalizeUrl('http://www.sindresorhus.com')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('www.com')).to.deep.equal('http://www.com');
	expect(normalizeUrl('http://www.www.sindresorhus.com')).to.deep.equal('http://www.www.sindresorhus.com');
	expect(normalizeUrl('www.sindresorhus.com')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/foo/')).to.deep.equal('http://sindresorhus.com/foo');
	expect(normalizeUrl('sindresorhus.com/?foo=bar baz')).to.deep.equal('http://sindresorhus.com/?foo=bar+baz');
	expect(normalizeUrl('https://foo.com/https://bar.com')).to.deep.equal('https://foo.com/https://bar.com');
	expect(normalizeUrl('https://foo.com/https://bar.com/foo//bar')).to.deep.equal('https://foo.com/https://bar.com/foo/bar');
	expect(normalizeUrl('https://foo.com/http://bar.com')).to.deep.equal('https://foo.com/http://bar.com');
	expect(normalizeUrl('https://foo.com/http://bar.com/foo//bar')).to.deep.equal('https://foo.com/http://bar.com/foo/bar');
	expect(normalizeUrl('http://sindresorhus.com/%7Efoo/')).to.deep.equal('http://sindresorhus.com/~foo', 'decode URI octets');
	expect(normalizeUrl('https://foo.com/%FAIL%/07/94/ca/55.jpg')).to.deep.equal('https://foo.com/%FAIL%/07/94/ca/55.jpg');
	expect(normalizeUrl('http://sindresorhus.com/?')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('êxample.com')).to.deep.equal('http://xn--xample-hva.com');
	expect(normalizeUrl('http://sindresorhus.com/?b=bar&a=foo')).to.deep.equal('http://sindresorhus.com/?a=foo&b=bar');
	expect(normalizeUrl('http://sindresorhus.com/?foo=bar*|<>:"')).to.deep.equal('http://sindresorhus.com/?foo=bar*%7C%3C%3E%3A%22');
	expect(normalizeUrl('http://sindresorhus.com:5000')).to.deep.equal('http://sindresorhus.com:5000');
	expect(normalizeUrl('//sindresorhus.com/', {normalizeProtocol: false})).to.deep.equal('//sindresorhus.com');
	expect(normalizeUrl('//sindresorhus.com:80/', {normalizeProtocol: false})).to.deep.equal('//sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/foo#bar')).to.deep.equal('http://sindresorhus.com/foo#bar');
	expect(normalizeUrl('http://sindresorhus.com/foo#bar', {stripHash: true})).to.deep.equal('http://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com/foo#bar:~:text=hello%20world', {stripHash: true})).to.deep.equal('http://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com/foo/bar/../baz')).to.deep.equal('http://sindresorhus.com/foo/baz');
	expect(normalizeUrl('http://sindresorhus.com/foo/bar/./baz')).to.deep.equal('http://sindresorhus.com/foo/bar/baz');
	expect(normalizeUrl('https://i.vimeocdn.com/filter/overlay?src0=https://i.vimeocdn.com/video/598160082_1280x720.jpg&src1=https://f.vimeocdn.com/images_v6/share/play_icon_overlay.png')).to.deep.equal('https://i.vimeocdn.com/filter/overlay?src0=https%3A%2F%2Fi.vimeocdn.com%2Fvideo%2F598160082_1280x720.jpg&src1=https%3A%2F%2Ff.vimeocdn.com%2Fimages_v6%2Fshare%2Fplay_icon_overlay.png');
});

// https://nodejs.org/api/url.html#url_special_schemes
it('main: non-special-protocol-schemes', () => {
	expect(normalizeUrl('sindre://www.sorhus.com')).to.deep.equal('sindre://sorhus.com');
	expect(normalizeUrl('sindre://www.sorhus.com/')).to.deep.equal('sindre://sorhus.com');
	expect(normalizeUrl('sindre://www.sorhus.com/foo/bar')).to.deep.equal('sindre://sorhus.com/foo/bar');
});

it('stripAuthentication option', () => {
	expect(normalizeUrl('http://user:password@www.sindresorhus.com')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('https://user:password@www.sindresorhus.com')).to.deep.equal('https://sindresorhus.com');
	expect(normalizeUrl('https://user:password@www.sindresorhus.com/@user')).to.deep.equal('https://sindresorhus.com/@user');
	expect(normalizeUrl('user:password@sindresorhus.com')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://user:password@www.êxample.com')).to.deep.equal('http://xn--xample-hva.com');

	const options = {stripAuthentication: false};
	expect(normalizeUrl('http://user:password@www.sindresorhus.com', options)).to.deep.equal('http://user:password@sindresorhus.com');
	expect(normalizeUrl('https://user:password@www.sindresorhus.com', options)).to.deep.equal('https://user:password@sindresorhus.com');
	expect(normalizeUrl('https://user:password@www.sindresorhus.com/@user', options)).to.deep.equal('https://user:password@sindresorhus.com/@user');
	expect(normalizeUrl('user:password@sindresorhus.com', options)).to.deep.equal('http://user:password@sindresorhus.com');
	expect(normalizeUrl('http://user:password@www.êxample.com', options)).to.deep.equal('http://user:password@xn--xample-hva.com');
});

it('stripAuthentication option: non-special-protocol-schemes', () => {
	expect(normalizeUrl('sindre://user:password@www.sorhus.com')).to.deep.equal('sindre://sorhus.com');

	const options = {stripAuthentication: false};
	expect(normalizeUrl('sindre://user:password@www.sorhus.com', options)).to.deep.equal('sindre://user:password@sorhus.com');
});

it('stripProtocol option', () => {
	const options = {stripProtocol: true};
	expect(normalizeUrl('http://www.sindresorhus.com', options)).to.deep.equal('sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com', options)).to.deep.equal('sindresorhus.com');
	expect(normalizeUrl('https://www.sindresorhus.com', options)).to.deep.equal('sindresorhus.com');
	expect(normalizeUrl('//www.sindresorhus.com', options)).to.deep.equal('sindresorhus.com');
});

it('stripProtocol option: non-special-protocol-schemes', () => {
	const options = {stripProtocol: true};
	expect(normalizeUrl('sindre://user:password@www.sorhus.com', options)).to.deep.equal('sindre://sorhus.com');
	expect(normalizeUrl('sindre://www.sorhus.com', options)).to.deep.equal('sindre://sorhus.com');
});

it('stripTextFragment option', () => {
	expect(normalizeUrl('http://sindresorhus.com')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/about#')).to.deep.equal('http://sindresorhus.com/about');
	expect(normalizeUrl('http://sindresorhus.com/about#:~:text=hello')).to.deep.equal('http://sindresorhus.com/about');
	expect(normalizeUrl('http://sindresorhus.com/about#main')).to.deep.equal('http://sindresorhus.com/about#main');
	expect(normalizeUrl('http://sindresorhus.com/about#main:~:text=hello')).to.deep.equal('http://sindresorhus.com/about#main');
	expect(normalizeUrl('http://sindresorhus.com/about#main:~:text=hello%20world')).to.deep.equal('http://sindresorhus.com/about#main');

	const options = {stripTextFragment: false};
	expect(normalizeUrl('http://sindresorhus.com', options)).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/about#:~:text=hello', options)).to.deep.equal('http://sindresorhus.com/about#:~:text=hello');
	expect(normalizeUrl('http://sindresorhus.com/about#main', options)).to.deep.equal('http://sindresorhus.com/about#main');
	expect(normalizeUrl('http://sindresorhus.com/about#main:~:text=hello', options)).to.deep.equal('http://sindresorhus.com/about#main:~:text=hello');
	expect(normalizeUrl('http://sindresorhus.com/about#main:~:text=hello%20world', options)).to.deep.equal('http://sindresorhus.com/about#main:~:text=hello%20world');

	const options2 = {stripHash: true, stripTextFragment: false};
	expect(normalizeUrl('http://sindresorhus.com', options2)).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/about#:~:text=hello', options2)).to.deep.equal('http://sindresorhus.com/about');
	expect(normalizeUrl('http://sindresorhus.com/about#main', options2)).to.deep.equal('http://sindresorhus.com/about');
	expect(normalizeUrl('http://sindresorhus.com/about#main:~:text=hello', options2)).to.deep.equal('http://sindresorhus.com/about');
	expect(normalizeUrl('http://sindresorhus.com/about#main:~:text=hello%20world', options2)).to.deep.equal('http://sindresorhus.com/about');
});

it('stripWWW option', () => {
	const options = {stripWWW: false};
	expect(normalizeUrl('http://www.sindresorhus.com', options)).to.deep.equal('http://www.sindresorhus.com');
	expect(normalizeUrl('www.sindresorhus.com', options)).to.deep.equal('http://www.sindresorhus.com');
	expect(normalizeUrl('http://www.êxample.com', options)).to.deep.equal('http://www.xn--xample-hva.com');

	const options2 = {stripWWW: true};
	expect(normalizeUrl('http://www.vue.amsterdam', options2)).to.deep.equal('http://vue.amsterdam');
	expect(normalizeUrl('http://www.sorhus.xx--bck1b9a5dre4c', options2)).to.deep.equal('http://sorhus.xx--bck1b9a5dre4c');

	const tooLongTLDURL = 'http://www.sorhus.' + 'a'.repeat(64);
	expect(normalizeUrl(tooLongTLDURL, options2)).to.deep.equal(tooLongTLDURL);
});

it('stripWWW option: non-special-protocol-schemes', () => {
	const options = {stripWWW: false};
	expect(normalizeUrl('sindre://www.sorhus.com', options)).to.deep.equal('sindre://www.sorhus.com');
});

it('removeQueryParameters option', () => {
	const options = {
		stripWWW: false,
		removeQueryParameters: [/^utm_\w+/i, 'ref'],
	};
	expect(normalizeUrl('www.sindresorhus.com?foo=bar&utm_medium=test')).to.deep.equal('http://sindresorhus.com/?foo=bar');
	expect(normalizeUrl('http://www.sindresorhus.com', options)).to.deep.equal('http://www.sindresorhus.com');
	expect(normalizeUrl('www.sindresorhus.com?foo=bar', options)).to.deep.equal('http://www.sindresorhus.com/?foo=bar');
	expect(normalizeUrl('www.sindresorhus.com?foo=bar&utm_medium=test&ref=test_ref', options)).to.deep.equal('http://www.sindresorhus.com/?foo=bar');
});

it('removeQueryParameters boolean `true` option', () => {
	const options = {
		stripWWW: false,
		removeQueryParameters: true,
	};

	expect(normalizeUrl('http://www.sindresorhus.com', options)).to.deep.equal('http://www.sindresorhus.com');
	expect(normalizeUrl('www.sindresorhus.com?foo=bar', options)).to.deep.equal('http://www.sindresorhus.com');
	expect(normalizeUrl('www.sindresorhus.com?foo=bar&utm_medium=test&ref=test_ref', options)).to.deep.equal('http://www.sindresorhus.com');
});

it('removeQueryParameters boolean `false` option', () => {
	const options = {
		stripWWW: false,
		removeQueryParameters: false,
	};

	expect(normalizeUrl('http://www.sindresorhus.com', options)).to.deep.equal('http://www.sindresorhus.com');
	expect(normalizeUrl('www.sindresorhus.com?foo=bar', options)).to.deep.equal('http://www.sindresorhus.com/?foo=bar');
	expect(normalizeUrl('www.sindresorhus.com?foo=bar&utm_medium=test&ref=test_ref', options)).to.deep.equal('http://www.sindresorhus.com/?foo=bar&ref=test_ref&utm_medium=test');
});

it('forceHttp option', () => {
	const options = {forceHttp: true};
	expect(normalizeUrl('https://sindresorhus.com')).to.deep.equal('https://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com', options)).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('https://www.sindresorhus.com', options)).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('//sindresorhus.com', options)).to.deep.equal('http://sindresorhus.com');
});

it('forceHttp option with forceHttps', () => {
	expect(() => {
		normalizeUrl('https://www.sindresorhus.com', {forceHttp: true, forceHttps: true});
	}).to.throw('The `forceHttp` and `forceHttps` options cannot be used together');
});

it('forceHttps option', () => {
	const options = {forceHttps: true};
	expect(normalizeUrl('https://sindresorhus.com')).to.deep.equal('https://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com', options)).to.deep.equal('https://sindresorhus.com');
	expect(normalizeUrl('https://www.sindresorhus.com', options)).to.deep.equal('https://sindresorhus.com');
	expect(normalizeUrl('//sindresorhus.com', options)).to.deep.equal('https://sindresorhus.com');
});

it('removeTrailingSlash option', () => {
	const options = {removeTrailingSlash: false};
	expect(normalizeUrl('http://sindresorhus.com')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/')).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com', options)).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/', options)).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/redirect')).to.deep.equal('http://sindresorhus.com/redirect');
	expect(normalizeUrl('http://sindresorhus.com/redirect/')).to.deep.equal('http://sindresorhus.com/redirect');
	expect(normalizeUrl('http://sindresorhus.com/redirect/', options)).to.deep.equal('http://sindresorhus.com/redirect/');
	expect(normalizeUrl('http://sindresorhus.com/redirect/', options)).to.deep.equal('http://sindresorhus.com/redirect/');
	expect(normalizeUrl('http://sindresorhus.com/#/')).to.deep.equal('http://sindresorhus.com/#/');
	expect(normalizeUrl('http://sindresorhus.com/#/', options)).to.deep.equal('http://sindresorhus.com/#/');
	expect(normalizeUrl('http://sindresorhus.com/?unicorns=true')).to.deep.equal('http://sindresorhus.com/?unicorns=true');
	expect(normalizeUrl('http://sindresorhus.com/?unicorns=true', options)).to.deep.equal('http://sindresorhus.com/?unicorns=true');
});

it('removeSingleSlash option', () => {
	const options = {removeSingleSlash: false};
	expect(normalizeUrl('https://sindresorhus.com', options)).to.deep.equal('https://sindresorhus.com');
	expect(normalizeUrl('https://sindresorhus.com/', options)).to.deep.equal('https://sindresorhus.com/');
	expect(normalizeUrl('https://sindresorhus.com/redirect', options)).to.deep.equal('https://sindresorhus.com/redirect');
	expect(normalizeUrl('https://sindresorhus.com/redirect/', options)).to.deep.equal('https://sindresorhus.com/redirect');
	expect(normalizeUrl('https://sindresorhus.com/#/', options)).to.deep.equal('https://sindresorhus.com/#/');
	expect(normalizeUrl('https://sindresorhus.com/?unicorns=true', options)).to.deep.equal('https://sindresorhus.com/?unicorns=true');
});

it('removeSingleSlash option combined with removeTrailingSlash option', () => {
	const options = {removeTrailingSlash: false, removeSingleSlash: false};
	expect(normalizeUrl('https://sindresorhus.com', options)).to.deep.equal('https://sindresorhus.com');
	expect(normalizeUrl('https://sindresorhus.com/', options)).to.deep.equal('https://sindresorhus.com/');
	expect(normalizeUrl('https://sindresorhus.com/redirect', options)).to.deep.equal('https://sindresorhus.com/redirect');
	expect(normalizeUrl('https://sindresorhus.com/redirect/', options)).to.deep.equal('https://sindresorhus.com/redirect/');
	expect(normalizeUrl('https://sindresorhus.com/#/', options)).to.deep.equal('https://sindresorhus.com/#/');
	expect(normalizeUrl('https://sindresorhus.com/?unicorns=true', options)).to.deep.equal('https://sindresorhus.com/?unicorns=true');
});

it('removeDirectoryIndex option', () => {
	const options1 = {removeDirectoryIndex: ['index.html', 'index.php']};
	expect(normalizeUrl('http://sindresorhus.com/index.html')).to.deep.equal('http://sindresorhus.com/index.html');
	expect(normalizeUrl('http://sindresorhus.com/index.html', options1)).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/index.htm', options1)).to.deep.equal('http://sindresorhus.com/index.htm');
	expect(normalizeUrl('http://sindresorhus.com/index.php', options1)).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/path/index.html')).to.deep.equal('http://sindresorhus.com/path/index.html');
	expect(normalizeUrl('http://sindresorhus.com/path/index.html', options1)).to.deep.equal('http://sindresorhus.com/path');
	expect(normalizeUrl('http://sindresorhus.com/path/index.htm', options1)).to.deep.equal('http://sindresorhus.com/path/index.htm');
	expect(normalizeUrl('http://sindresorhus.com/path/index.php', options1)).to.deep.equal('http://sindresorhus.com/path');
	expect(normalizeUrl('http://sindresorhus.com/foo/bar/index.html', options1)).to.deep.equal('http://sindresorhus.com/foo/bar');

	const options2 = {removeDirectoryIndex: [/^index\.[a-z]+$/, 'remove.html']};
	expect(normalizeUrl('http://sindresorhus.com/index.html')).to.deep.equal('http://sindresorhus.com/index.html');
	expect(normalizeUrl('http://sindresorhus.com/index.html', options2)).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/index/index.html', options2)).to.deep.equal('http://sindresorhus.com/index');
	expect(normalizeUrl('http://sindresorhus.com/remove.html', options2)).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/default.htm', options2)).to.deep.equal('http://sindresorhus.com/default.htm');
	expect(normalizeUrl('http://sindresorhus.com/index.php', options2)).to.deep.equal('http://sindresorhus.com');

	const options3 = {removeDirectoryIndex: true};
	expect(normalizeUrl('http://sindresorhus.com/index.html')).to.deep.equal('http://sindresorhus.com/index.html');
	expect(normalizeUrl('http://sindresorhus.com/index.html', options3)).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/index.htm', options3)).to.deep.equal('http://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/index.php', options3)).to.deep.equal('http://sindresorhus.com');
});

it('removeTrailingSlash and removeDirectoryIndex options)', () => {
	const options1 = {
		removeTrailingSlash: true,
		removeDirectoryIndex: true,
	};
	expect(normalizeUrl('http://sindresorhus.com/path/', options1)).to.deep.equal('http://sindresorhus.com/path');
	expect(normalizeUrl('http://sindresorhus.com/path/index.html', options1)).to.deep.equal('http://sindresorhus.com/path');
	expect(normalizeUrl('http://sindresorhus.com/#/path/', options1)).to.deep.equal('http://sindresorhus.com/#/path/');
	expect(normalizeUrl('http://sindresorhus.com/foo/#/bar/', options1)).to.deep.equal('http://sindresorhus.com/foo#/bar/');

	const options2 = {
		removeTrailingSlash: false,
		removeDirectoryIndex: true,
	};
	expect(normalizeUrl('http://sindresorhus.com/path/', options2)).to.deep.equal('http://sindresorhus.com/path/');
	expect(normalizeUrl('http://sindresorhus.com/path/index.html', options2)).to.deep.equal('http://sindresorhus.com/path/');
	expect(normalizeUrl('http://sindresorhus.com/#/path/', options2)).to.deep.equal('http://sindresorhus.com/#/path/');
});

it('sortQueryParameters option', () => {
	const options1 = {
		sortQueryParameters: true,
	};
	expect(normalizeUrl('http://sindresorhus.com/?a=Z&b=Y&c=X&d=W', options1)).to.deep.equal('http://sindresorhus.com/?a=Z&b=Y&c=X&d=W');
	expect(normalizeUrl('http://sindresorhus.com/?b=Y&c=X&a=Z&d=W', options1)).to.deep.equal('http://sindresorhus.com/?a=Z&b=Y&c=X&d=W');
	expect(normalizeUrl('http://sindresorhus.com/?a=Z&d=W&b=Y&c=X', options1)).to.deep.equal('http://sindresorhus.com/?a=Z&b=Y&c=X&d=W');
	expect(normalizeUrl('http://sindresorhus.com/', options1)).to.deep.equal('http://sindresorhus.com');

	const options2 = {
		sortQueryParameters: false,
	};
	expect(normalizeUrl('http://sindresorhus.com/?a=Z&b=Y&c=X&d=W', options2)).to.deep.equal('http://sindresorhus.com/?a=Z&b=Y&c=X&d=W');
	expect(normalizeUrl('http://sindresorhus.com/?b=Y&c=X&a=Z&d=W', options2)).to.deep.equal('http://sindresorhus.com/?b=Y&c=X&a=Z&d=W');
	expect(normalizeUrl('http://sindresorhus.com/?a=Z&d=W&b=Y&c=X', options2)).to.deep.equal('http://sindresorhus.com/?a=Z&d=W&b=Y&c=X');
	expect(normalizeUrl('http://sindresorhus.com/', options2)).to.deep.equal('http://sindresorhus.com');
});

it('sortQueryParameters option (old browser)', () => {
	const options1 = {
		sortQueryParameters: true, preferURLSearchParamsSort: false,
	};
	expect(normalizeUrl('http://sindresorhus.com/?a=Z&b=Y&c=X&d=W', options1)).to.deep.equal('http://sindresorhus.com/?a=Z&b=Y&c=X&d=W');
	expect(normalizeUrl('http://sindresorhus.com/?b=Y&c=X&a=Z&d=W', options1)).to.deep.equal('http://sindresorhus.com/?a=Z&b=Y&c=X&d=W');
	expect(normalizeUrl('http://sindresorhus.com/?a=Z&d=W&b=Y&c=X', options1)).to.deep.equal('http://sindresorhus.com/?a=Z&b=Y&c=X&d=W');
	expect(normalizeUrl('http://sindresorhus.com/', options1)).to.deep.equal('http://sindresorhus.com');

	const options2 = {
		sortQueryParameters: false, preferURLSearchParamsSort: false,
	};
	expect(normalizeUrl('http://sindresorhus.com/?a=Z&b=Y&c=X&d=W', options2)).to.deep.equal('http://sindresorhus.com/?a=Z&b=Y&c=X&d=W');
	expect(normalizeUrl('http://sindresorhus.com/?b=Y&c=X&a=Z&d=W', options2)).to.deep.equal('http://sindresorhus.com/?b=Y&c=X&a=Z&d=W');
	expect(normalizeUrl('http://sindresorhus.com/?a=Z&d=W&b=Y&c=X', options2)).to.deep.equal('http://sindresorhus.com/?a=Z&d=W&b=Y&c=X');
	expect(normalizeUrl('http://sindresorhus.com/', options2)).to.deep.equal('http://sindresorhus.com');
});

it('invalid urls loose', () => {
	expect(() => {
		normalizeUrl('http://');
	}).to.throw(/^Invalid URL/);

	expect(() => {
		normalizeUrl('/');
	}).to.throw(/^Invalid URL/);

	expect(() => {
		normalizeUrl('/relative/path/');
	}).to.throw(/^Invalid URL/);
});

it('remove duplicate pathname slashes v4 with JsRegexpLookbehind', () => {
	expect(normalizeUrl('http://sindresorhus.com////foo/bar')).to.deep.equal('http://sindresorhus.com/foo/bar');
	expect(normalizeUrl('http://sindresorhus.com////foo////bar')).to.deep.equal('http://sindresorhus.com/foo/bar');
	expect(normalizeUrl('//sindresorhus.com//foo', {normalizeProtocol: false})).to.deep.equal('//sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com:5000///foo')).to.deep.equal('http://sindresorhus.com:5000/foo');
	expect(normalizeUrl('http://sindresorhus.com///foo')).to.deep.equal('http://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com:5000//foo')).to.deep.equal('http://sindresorhus.com:5000/foo');
	expect(normalizeUrl('http://sindresorhus.com//foo')).to.deep.equal('http://sindresorhus.com/foo');
});

it('remove duplicate pathname slashes v4 without JsRegexpLookbehind', () => {
	const options = {
		preferJsRegexpLookbehind: false,
	};

	expect(normalizeUrl('http://sindresorhus.com////foo/bar', options)).to.deep.equal('http://sindresorhus.com/foo/bar');
	expect(normalizeUrl('http://sindresorhus.com////foo////bar', options)).to.deep.equal('http://sindresorhus.com/foo/bar');
	expect(normalizeUrl('//sindresorhus.com//foo', {normalizeProtocol: false, preferJsRegexpLookbehind: false})).to.deep.equal('//sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com:5000///foo', options)).to.deep.equal('http://sindresorhus.com:5000/foo');
	expect(normalizeUrl('http://sindresorhus.com///foo', options)).to.deep.equal('http://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com:5000//foo', options)).to.deep.equal('http://sindresorhus.com:5000/foo');
	expect(normalizeUrl('http://sindresorhus.com//foo', options)).to.deep.equal('http://sindresorhus.com/foo');
});

it('remove duplicate pathname slashes v7 with JsRegexpLookbehind', () => {
	expect(normalizeUrl('http://sindresorhus.com////foo/bar')).to.deep.equal('http://sindresorhus.com/foo/bar');
	expect(normalizeUrl('http://sindresorhus.com////foo////bar')).to.deep.equal('http://sindresorhus.com/foo/bar');
	expect(normalizeUrl('//sindresorhus.com//foo', {normalizeProtocol: false})).to.deep.equal('//sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com:5000///foo')).to.deep.equal('http://sindresorhus.com:5000/foo');
	expect(normalizeUrl('http://sindresorhus.com///foo')).to.deep.equal('http://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com:5000//foo')).to.deep.equal('http://sindresorhus.com:5000/foo');
	expect(normalizeUrl('http://sindresorhus.com//foo')).to.deep.equal('http://sindresorhus.com/foo');

	expect(normalizeUrl('http://sindresorhus.com/s3://sindresorhus.com')).to.deep.equal('http://sindresorhus.com/s3://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/s3://sindresorhus.com//foo')).to.deep.equal('http://sindresorhus.com/s3://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com//foo/s3://sindresorhus.com')).to.deep.equal('http://sindresorhus.com/foo/s3://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/git://sindresorhus.com')).to.deep.equal('http://sindresorhus.com/git://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/git://sindresorhus.com//foo')).to.deep.equal('http://sindresorhus.com/git://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com//foo/git://sindresorhus.com//foo')).to.deep.equal('http://sindresorhus.com/foo/git://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com/a://sindresorhus.com//foo')).to.deep.equal('http://sindresorhus.com/a:/sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com/alongprotocolwithin50charlimitxxxxxxxxxxxxxxxxxxxx://sindresorhus.com//foo')).to.deep.equal('http://sindresorhus.com/alongprotocolwithin50charlimitxxxxxxxxxxxxxxxxxxxx://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com/alongprotocolexceeds50charlimitxxxxxxxxxxxxxxxxxxxxx://sindresorhus.com//foo')).to.deep.equal('http://sindresorhus.com/alongprotocolexceeds50charlimitxxxxxxxxxxxxxxxxxxxxx:/sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com/a2-.+://sindresorhus.com')).to.deep.equal('http://sindresorhus.com/a2-.+://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/a2-.+_://sindresorhus.com')).to.deep.equal('http://sindresorhus.com/a2-.+_:/sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/2abc://sindresorhus.com')).to.deep.equal('http://sindresorhus.com/2abc:/sindresorhus.com');
});

it('remove duplicate pathname slashes v7 without JsRegexpLookbehind', () => {
	const options = {
		preferJsRegexpLookbehind: false,
	};
	expect(normalizeUrl('http://sindresorhus.com////foo/bar', options)).to.deep.equal('http://sindresorhus.com/foo/bar');
	expect(normalizeUrl('http://sindresorhus.com////foo////bar', options)).to.deep.equal('http://sindresorhus.com/foo/bar');
	expect(normalizeUrl('//sindresorhus.com//foo', {normalizeProtocol: false, preferJsRegexpLookbehind: false})).to.deep.equal('//sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com:5000///foo', options)).to.deep.equal('http://sindresorhus.com:5000/foo');
	expect(normalizeUrl('http://sindresorhus.com///foo', options)).to.deep.equal('http://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com:5000//foo', options)).to.deep.equal('http://sindresorhus.com:5000/foo');
	expect(normalizeUrl('http://sindresorhus.com//foo', options)).to.deep.equal('http://sindresorhus.com/foo');

	expect(normalizeUrl('http://sindresorhus.com/s3://sindresorhus.com', options)).to.deep.equal('http://sindresorhus.com/s3://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/s3://sindresorhus.com//foo', options)).to.deep.equal('http://sindresorhus.com/s3://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com//foo/s3://sindresorhus.com', options)).to.deep.equal('http://sindresorhus.com/foo/s3://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/git://sindresorhus.com', options)).to.deep.equal('http://sindresorhus.com/git://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/git://sindresorhus.com//foo', options)).to.deep.equal('http://sindresorhus.com/git://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com//foo/git://sindresorhus.com//foo', options)).to.deep.equal('http://sindresorhus.com/foo/git://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com/a://sindresorhus.com//foo', options)).to.deep.equal('http://sindresorhus.com/a:/sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com/alongprotocolwithin50charlimitxxxxxxxxxxxxxxxxxxxx://sindresorhus.com//foo', options)).to.deep.equal('http://sindresorhus.com/alongprotocolwithin50charlimitxxxxxxxxxxxxxxxxxxxx://sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com/alongprotocolexceeds50charlimitxxxxxxxxxxxxxxxxxxxxx://sindresorhus.com//foo', options)).to.deep.equal('http://sindresorhus.com/alongprotocolexceeds50charlimitxxxxxxxxxxxxxxxxxxxxx:/sindresorhus.com/foo');
	expect(normalizeUrl('http://sindresorhus.com/a2-.+://sindresorhus.com', options)).to.deep.equal('http://sindresorhus.com/a2-.+://sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/a2-.+_://sindresorhus.com', options)).to.deep.equal('http://sindresorhus.com/a2-.+_:/sindresorhus.com');
	expect(normalizeUrl('http://sindresorhus.com/2abc://sindresorhus.com', options)).to.deep.equal('http://sindresorhus.com/2abc:/sindresorhus.com');
});

it('data URL', () => {
	// Invalid URL.
	expect(() => {
		normalizeUrl('data:');
	}).to.throw('Invalid URL: data:');

	// Strip default MIME type
	expect(normalizeUrl('data:text/plain,foo')).to.deep.equal('data:,foo');

	// Strip default charset
	expect(normalizeUrl('data:;charset=us-ascii,foo')).to.deep.equal('data:,foo');

	// Normalize away trailing semicolon.
	expect(normalizeUrl('data:;charset=UTF-8;,foo')).to.deep.equal('data:;charset=utf-8,foo');

	// Empty MIME type.
	expect(normalizeUrl('data:,')).to.deep.equal('data:,');

	// Empty MIME type with charset.
	expect(normalizeUrl('data:;charset=utf-8,foo')).to.deep.equal('data:;charset=utf-8,foo');

	// Lowercase the MIME type.
	expect(normalizeUrl('data:TEXT/HTML,foo')).to.deep.equal('data:text/html,foo');

	// Strip empty hash.
	expect(normalizeUrl('data:,foo# ')).to.deep.equal('data:,foo');

	// Key only mediaType attribute.
	expect(normalizeUrl('data:;foo=;bar,')).to.deep.equal('data:;foo;bar,');

	// Lowercase the charset.
	expect(normalizeUrl('data:;charset=UTF-8,foo')).to.deep.equal('data:;charset=utf-8,foo');

	// Remove spaces after the comma when it's base64.
	expect(normalizeUrl('data:;base64, Zm9v #foo #bar')).to.deep.equal('data:;base64,Zm9v#foo #bar');

	// Keep spaces when it's not base64.
	expect(normalizeUrl('data:, foo #bar')).to.deep.equal('data:, foo #bar');

	// Options.
	const options = {
		defaultProtocol: 'http:',
		normalizeProtocol: true,
		forceHttp: true,
		stripHash: true,
		stripWWW: true,
		stripProtocol: true,
		removeQueryParameters: [/^utm_\w+/i, 'ref'],
		sortQueryParameters: true,
		removeTrailingSlash: true,
		removeDirectoryIndex: true,
	};
	expect(normalizeUrl('data:,sindresorhus.com/', options)).to.deep.equal('data:,sindresorhus.com/');
	expect(normalizeUrl('data:,sindresorhus.com/index.html', options)).to.deep.equal('data:,sindresorhus.com/index.html');
	expect(normalizeUrl('data:,sindresorhus.com?foo=bar&a=a&utm_medium=test', options)).to.deep.equal('data:,sindresorhus.com?foo=bar&a=a&utm_medium=test');
	expect(normalizeUrl('data:,foo#bar', options)).to.deep.equal('data:,foo');
	expect(normalizeUrl('data:,www.sindresorhus.com', options)).to.deep.equal('data:,www.sindresorhus.com');
});

it('prevents homograph attack', () => {
	// The input string uses Unicode to make it look like a valid `ebay.com` URL.
	expect(normalizeUrl('https://ebаy.com')).to.deep.equal('https://xn--eby-7cd.com');
});

it('view-source URL', () => {
	expect(() => {
		normalizeUrl('view-source:https://www.sindresorhus.com');
	}).to.throw('`view-source:` is not supported as it is a non-standard protocol');
});

it('does not have exponential performance for data URLs', () => {
	for (let index = 0; index < 1000; index += 50) {
		const url = 'data:' + Array.from({length: index}).fill(',#').join('') + '\ra';
		const start = Date.now();

		try {
			normalizeUrl(url);
		} catch {}

		const difference = Date.now() - start;
		expect(difference < 100, `Execution time: ${difference}`).to.deep.equal(true);
	}
});