'use strict';

var builder = require('./builder');
var fs = require('fs');
var path = require('path');

var errors = 0;

var baseDir = path.join(__dirname, 'fixtures');
var files = fs.readdirSync(baseDir).filter(function (name) {
  return /-expected\./.test(name);
}).map(function (name) {
  return path.join(baseDir, name);
});
files.forEach(function(expectationFilename) {
  var inFilename = expectationFilename.replace('-expected', '');
  var expectation = fs.readFileSync(expectationFilename).toString().trim()
    .replace(/__filename/g, fs.realpathSync(inFilename));
  var outLines = [];

  var outFilename = function(line) {
    outLines.push(line);
  };
  var defines = {
    TRUE: true,
    FALSE: false,
  };
  var out;
  try {
    builder.preprocess(inFilename, outFilename, defines);
    out = outLines.join('\n').trim();
  } catch (e) {
    out = ('Error: ' + e.message).replace(/^/gm, '//');
  }
  if (out !== expectation) {
    errors++;

    console.log('Assertion failed for ' + inFilename);
    console.log('--------------------------------------------------');
    console.log('EXPECTED:');
    console.log(expectation);
    console.log('--------------------------------------------------');
    console.log('ACTUAL');
    console.log(out);
    console.log('--------------------------------------------------');
    console.log();
  }
});

if (errors) {
  console.error('Found ' + errors + ' expectation failures.');
  process.exit(1);
} else {
  console.log('All tests completed without errors.');
  process.exit(0);
}