'use strict';

import * as mocha from 'mocha';
import { X12Parser, X12Interchange, X12Segment } from '../core';

let fs = require('fs');

describe('X12Parser', () => {
    
    it('should parse a valid X12 document without throwing an error', () => {
        let edi = fs.readFileSync('tests/test-data/850.edi', 'utf8');
        let parser = new X12Parser(true);
        parser.parseX12(edi);
    });
    
    it('should produce accurate line numbers for files with line breaks', () => {
        let edi = fs.readFileSync('tests/test-data/850_3.edi', 'utf8');
        let parser = new X12Parser(true);
        let interchange = parser.parseX12(edi);
        
        let segments = [].concat(
            [interchange.header, interchange.functionalGroups[0].header, interchange.functionalGroups[0].transactions[0].header],
            interchange.functionalGroups[0].transactions[0].segments,
            [interchange.functionalGroups[0].transactions[0].trailer, interchange.functionalGroups[0].trailer, interchange.trailer]
        );
        
        for (let i = 0; i < segments.length; i++) {
            let segment: X12Segment = segments[i];
            
            if (i !== segment.range.start.line) {
                throw new Error(`Segment line number incorrect. Expected ${i}, found ${segment.range.start.line}.`);
            }
        }
    });
    
});