'use strict';

// Tests for combinations of single + multi-line comments;

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

describe('Mixed:', function () {

    describe('special slash cases', function () {
        it('must be ignored', function () {
            expect(decomment('\'\f\'')).toBe('\'\f\'');

            expect(decomment('\'\\\'\'')).toBe('\'\\\'\'');
            expect(decomment('"\\""')).toBe('"\\""');
            expect(decomment('`\\``')).toBe('`\\``');

            expect(decomment('\'\\\'\\\'\'')).toBe('\'\\\'\\\'\'');
            expect(decomment('"\\"\\""')).toBe('"\\"\\""');
            expect(decomment('`\\`\\``')).toBe('`\\`\\``');

            expect(decomment('\'\\\\\'')).toBe('\'\\\\\'');
            expect(decomment('"\\\\"')).toBe('"\\\\"');
            expect(decomment('`\\\\`')).toBe('`\\\\`');

            expect(decomment('\'\\\\\\\'\'')).toBe('\'\\\\\\\'\'');
            expect(decomment('\'\\\\\\\'\';')).toBe('\'\\\\\\\'\';');

            expect(decomment('"\\\\\\""')).toBe('"\\\\\\""');
            expect(decomment('"\\\\\\"";')).toBe('"\\\\\\"";');

            expect(decomment('`\\\\\\``')).toBe('`\\\\\\``');
            expect(decomment('`\\\\\\``;')).toBe('`\\\\\\``;');

        });
    });

    describe('single-line gaps', function () {
        it('must be removed', function () {
            expect(decomment('//one' + LB + '//two' + LB + '//three')).toBe('');
        });
    });

    describe('multi-line gaps', function () {
        it('must be removed', function () {
            expect(decomment('/*one*/' + LB + '/*two*/' + LB + '/*three*/')).toBe('');
        });
    });

    describe('mixed comments', function () {
        it('must be removed', function () {
            expect(decomment('//one' + LB + '/*two*/' + LB + '//three')).toBe('');
        });
    });

    describe('Automatic EOL', function () {

        it('must always ignore solo \\r symbols', function () {
            expect(decomment('//comment\r\rtext', {trim: true})).toBe('');
            expect(decomment('/*comment*/\r\rtext', {trim: true})).toBe('\r\rtext');
        });
        it('must determine Unix and break on \\n', function () {
            expect(decomment('//comment\n\ntext', {trim: true})).toBe('text');
            expect(decomment('/*comment*/\n\ntext', {trim: true})).toBe('text');
        });
        it('must determine Windows and break on \\r\\n', function () {
            expect(decomment('//comment\r\n\r\ntext', {trim: true})).toBe('text');
            expect(decomment('/*comment*/\r\n\r\ntext', {trim: true})).toBe('text');
        });

    });

});