使用Jasmine和PhantomJS进行Angular JS测试，错误为0

Question

 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: [ '../scripts/bower_components/angularjs/angular.js', '../scripts/bower_components/angular-mocks/angular-mocks.js', '../scripts/app.js', '../scripts/11.js', '../scripts/controllers/*.js', '../scripts/directives/*.js', '../scripts/services/*.js', 'controllers/controllersTests.js', ], // list of files to exclude exclude: [ ], // preprocess matching files before serving them to the browser // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor preprocessors: { }, // test results reporter to use // possible values: 'dots', 'progress' // available reporters: https://npmjs.org/browse/keyword/karma-reporter reporters: ['progress'], // 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: ['PhantomJS', 'PhantomJS_custom'], customLaunchers: { 'PhantomJS_custom': { base: 'PhantomJS', options: { windowName: 'my-window', settings: { webSecurityEnabled: false }, }, flags: ['--load-images=true'], debug: false } }, phantomjsLauncher: { // Have phantomjs exit if a ResourceError is encountered (useful if karma exits without killing phantom) exitOnResourceError: true }, // Continuous Integration mode // if true, Karma captures browsers, runs the tests and exits singleRun: false }) } 

I need to test code of controllers, but i can't see right result, code below: "slide" array length = 4; but in test i write "toBe(2)" and i see:

PhantomJS 1.9.8 (Linux 0.0.0): Executed 0 of 0 ERROR (0.035 secs / 0 secs)

Why i see 0 errors, if I expect 2, but array length is 4 ???

app.controller('mainCtrl',['$scope', function($scope){
  $scope.slide = [1, 2, 3, 4];
}]);

describe('Tests Controllers', function() {
  beforeEach(module('app'));

  var $controller;

  beforeEach(inject(function(_$controller_, $rootScope){
    $controller = _$controller_;

    it('check slides length, it should be 4', function() {
      var $scope = {};
      var controller = $controller('mainCtrl', { $scope: $scope });
      expect($scope.slide.length).toBe(2);
    });
  }));
});

Answer 1

When Karma can't find your tests and displays Executed 0 of 0 ERROR , the most popular reasons which lead to this behavior are:

• bad path to a test file/folder in karma.conf.js in the files:[] option
• missing specs ( it blocks) in the test file/folder, so Karma has nothing to execute. It may occur also if specs are placed inappropriately within a test file, like in your case you've put it inside beforeEach , but Jasmine does not support it. The idea is to put them on the same level. it spec can live separately in the global scope or right within describe suite blocks.