[] == ![]

console.log('b' + 'a' + + 'a' + 'a');

 3  - 1
 3  + 1
'3' - 1
'3' + 1

document.createElement("div");

describe("A suite is just a function", function() {
  var a;

  it("and so is a spec", function() {
    a = true;

    expect(a).toBe(true);
  });
});

// Karma configuration
// Generated on Tue Jun 19 2018 12:16:30 GMT+0300 (Turkey Standard Time)
process.env.CHROME_BIN = require('puppeteer').executablePath();
const path = require('path');

module.exports = function(config) {
  config.set({

    // base path that will be used to resolve all patterns (eg. files, exclude)
    basePath: '',


    // frameworks to use
    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
    frameworks: ['jasmine'],


    // list of files / patterns to load in the browser
    files: [
      './Static/dist/scripts/hurriyet/hurriyet.vendor.min.js',
      './Static/test/tests.webpack.js',
    ],


    // list of files / patterns to exclude
    exclude: [
    ],


    // preprocess matching files before serving them to the browser
    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
    preprocessors: {
      './Static/test/tests.webpack.js': [ 'webpack', 'sourcemap' ],
    },
    
    //webpack configuration with coverage loader
    webpack: {
      mode: 'development',
      devtool: 'inline-source-map',
      module: {
        rules: [
          {
            enforce: 'post',
            test: /Static\\src\\scripts\\\w+\\.*\.js$/,
            loader: 'istanbul-instrumenter-loader',
            exclude: [
              // 'node_modules'
            ],
            query: {
              esModules: true
            }
          }
        ]
      }
    },


    // Webpack std out off
    webpackServer: { noInfo: true },


    // test results reporter to use
    // possible values: 'dots', 'progress'
    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
    reporters: ['progress', 'coverage-istanbul'],

    // code coverage configuration
    coverageIstanbulReporter: {
      reports: [ 'html', 'text-summary', 'json', 'json-summary', 'text' ],
      fixWebpackSourcePaths: true,
      dir: path.join(__dirname, 'coverage')
    },

    // web server port
    port: 9876,


    // enable / disable colors in the output (reporters and logs)
    colors: true,


    // level of logging
    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
    logLevel: config.LOG_INFO,


    // enable / disable watching file and executing tests whenever any file changes
    autoWatch: true,


    // start these browsers
    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
    browsers: [
      //'Chrome', 
      'MyChromeHeadless'
    ],
    customLaunchers: { //"--window-size=1920,1048"
      MyChromeHeadless: {
        base: 'ChromeHeadless',
        flags: ["--window-size=1920,1048"],
      }
    },

    // Continuous Integration mode
    // if true, Karma captures browsers, runs the tests and exits
    singleRun: false,

    // Concurrency level
    // how many browser should be started simultaneous
    concurrency: Infinity
  })
}

import TurkishLetter from '../../src/scripts/common/turkish-letter';

describe("TurkishLetter class'ı", function(){
    let turkishLetter;
    
    beforeEach(function(){
        turkishLetter = new TurkishLetter();
    });

    it("Türkçe büyük harfleri küçük harf yapabilmeli", function(){
        expect(turkishLetter.toLower("İIŞĞÜÖÇ")).toBe("iışğüöç");
    });

    it("Türkçe küçük harfleri büyük harf yapabilmeli", function(){
        expect(turkishLetter.toUpper("iışğüöç")).toBe("İIŞĞÜÖÇ");
    });
});