'use strict';

// Tests for skipping regular expressions;

const decomment = require('../lib');
const os = require('os');
const LB = os.EOL;

describe('RegEx:', function () {

    describe('with apostrophe', function () {
        it('must ignore the apostrophe', function () {
            expect(decomment('/\'/')).toBe('/\'/');
            expect(decomment('/\'/' + LB)).toBe('/\'/' + LB);
            expect(decomment('/\'/')).toBe('/\'/');
            expect(decomment('/\'/text')).toBe('/\'/text');
        });
    });

    describe('with a quote', function () {
        it('must ignore the quote', function () {
            expect(decomment('/"/')).toBe('/"/');
            expect(decomment('/"/' + LB)).toBe('/"/' + LB);
            expect(decomment('/"/')).toBe('/"/');
            expect(decomment('/"/text')).toBe('/"/text');
        });
    });

    describe('with an es6 apostrophe', function () {
        it('must ignore the apostrophe', function () {
            expect(decomment('/`/')).toBe('/`/');
            expect(decomment('/`/' + LB)).toBe('/`/' + LB);
            expect(decomment('/`/')).toBe('/`/');
        });
    });

    describe('with a back-slash', function () {
        it('must ignore the back-slash', function () {
            expect(decomment('/\\//')).toBe('/\\//');
            expect(decomment('/\\//')).toBe('/\\//');
        });
    });

    describe('with a multi-line', function () {
        it('must ignore the multi-line', function () {
            expect(decomment('/\\/*/')).toBe('/\\/*/');
            expect(decomment('/\\/*/')).toBe('/\\/*/');
        });
    });

    describe('with a multi-line opener', function () {
        it('must ignore the multi-line', function () {
            expect(decomment('/\\*/')).toBe('/\\*/');
            expect(decomment('/\\*/')).toBe('/\\*/');
        });
    });

    describe('valid regular expressions', function () {
        it('must repent any content', function () {
            expect(decomment('t=/\'/')).toBe('t=/\'/');
            expect(decomment(LB + 't=/\'/')).toBe(LB + 't=/\'/');
            expect(decomment('/[\']/')).toBe('/[\']/');
        });
    });

    describe('multiple regEx in one line', function () {
        it('must be detected correctly', function () {
            expect(decomment('/[\']/, /[\']/')).toBe('/[\']/, /[\']/');
            expect(decomment('/[\']/, /[\']/, /[`]/')).toBe('/[\']/, /[\']/, /[`]/');
        });
    });

    describe('with comments on the outside', function () {
        it('must remove the comments', function () {
            expect(decomment('/*comment*/ /text/')).toBe(' /text/');
            expect(decomment('/text/ //comment')).toBe('/text/ ');
        });
    });
});