index.js

var util = require('util');

var escapeMessage = function (message) {
  if(message === null || message === undefined) {
    return '';
  }

  return message.toString().
    replace(/\|/g, '||').
    replace(/\'/g, '|\'').
    replace(/\n/g, '|n').
    replace(/\r/g, '|r').
    replace(/\u0085/g, '|x').
    replace(/\u2028/g, '|l').
    replace(/\u2029/g, '|p').
    replace(/\[/g, '|[').
    replace(/\]/g, '|]');
};

var formatMessage = function() {
  var args = Array.prototype.slice.call(arguments);

  for (var i = args.length - 1; i > 0; i--) {
    args[i] = escapeMessage(args[i]);
  }
  return util.format.apply(null, args) + '\n';
};


var MSBuildReporter = function(baseReporterDecorator) {
  baseReporterDecorator(this);

  this.TEST_IGNORED  = 'testIgnored name=\'%s\'';
  this.SUITE_START   = 'testSuiteStarted name=\'%s\'';
  this.SUITE_END     = 'testSuiteFinished name=\'%s\'';
  this.TEST_START    = 'testStarted name=\'%s\'';
  this.TEST_FAILED   = '%s: error: Test \'%s\' Failed: %s';
  this.TEST_END      = 'testFinished name=\'%s\' duration=\'%s\'';
  this.BROWSER_START = 'browserStart name=\'%s\'';
  this.BROWSER_END = 'browserEnd name=\'%s\'';
  this.REG_LINENUMBER = /\?([0-9a-z]+?)\:(\d+)$/;

  var reporter = this;
  var initializeBrowser = function (browser) {
      reporter.browserResults[browser.id] = {
          name: browser.name,
          log: [],
          lastSuite: null
      };
  };

  this.onRunStart = function (browsers) {
      this.browserResults = {};
      // Support Karma 0.10 (TODO: remove)
      browsers.forEach(initializeBrowser);
  };

  this.onBrowserStart = function (browser) {
      initializeBrowser(browser);
  };

  this.specSuccess = function(browser, result) {
    var log = this.getLog(browser, result);
    var testName = result.description;

    log.push(formatMessage(this.TEST_START, testName));
    log.push(formatMessage(this.TEST_END, testName, result.time));
  };

  this.specFailure = function(browser, result) {
    var log = this.getLog(browser, result);
    var testName = result.description;
    var self = this;

    log.push(formatMessage(this.TEST_START, testName));

    console.log(result);
    result.log.forEach(function (item) {
        console.log(self.formatErrorMessageForTest(item, testName));
    });

    //log.push(formatMessage(this.TEST_FAILED, testName, result.log.join("\\n").replace(/\n/g, '$(NewLine)')));
    log.push(formatMessage(this.TEST_END, testName, result.time));
  };

  this.formatErrorMessageForTest = function (message, testName) {
      var cleanedMessage = message.replace(/\\n/g, '');
      var messageInfo = cleanedMessage.split(' at ');
      return formatMessage(this.TEST_FAILED, this.extractFileAndLinenumber(messageInfo[1]), testName, messageInfo[0].replace(/\n/g, '').trim());
  };

  this.extractFileAndLinenumber = function (message) {
      var path = message.indexOf('absolute') > -1 ? message.split('absolute')[1] : message;
      var lineNumMatch = this.REG_LINENUMBER.exec(path);

      if (lineNumMatch) {
          return path.replace(lineNumMatch[0], '') + ' ' + '(' + lineNumMatch[2] + ')';
      }
  };

  this.specSkipped = function(browser, result) {
    var log = this.getLog(browser, result);
    var testName = result.description;

    log.push(formatMessage(this.TEST_IGNORED, testName));
  };

  this.onRunComplete = function() {
    var self = this;

    Object.keys(this.browserResults).forEach(function(browserId) {
      var browserResult = self.browserResults[browserId];
      var log = browserResult.log;
      if(browserResult.lastSuite) {
        log.push(formatMessage(self.SUITE_END, browserResult.lastSuite));
      }
      self.write(formatMessage(self.BROWSER_START, browserResult.name));
      self.write(log.join(''));
      self.write(formatMessage(self.BROWSER_END, browserResult.name));
    });
  };

  this.getLog = function(browser, result) {
    var browserResult = this.browserResults[browser.id];
    var suiteName = result.suite.join(' ');
    var log = browserResult.log;
    if(browserResult.lastSuite !== suiteName) {
      if(browserResult.lastSuite) {
        log.push(formatMessage(this.SUITE_END, browserResult.lastSuite));
      }
      browserResult.lastSuite = suiteName;
      log.push(formatMessage(this.SUITE_START, suiteName));
    }
    return log;
  };

};

MSBuildReporter.$inject = ['baseReporterDecorator'];

module.exports = {
  'reporter:msbuild': ['type', MSBuildReporter]
};