Replace jasmine gem with jasmine via karma

.rubocop.yml

@@ -31,6 +31,10 @@ Metrics/BlockLength:
 RSpec/NestedGroups:
   Enabled: false
 
+RSpec/DescribeClass:
+  Exclude:
+    - 'spec/javascripts/**/*'
+
 RSpec/LeadingSubject:
   Enabled: false
 

.travis.yml

@@ -10,6 +10,7 @@ cache:
 before_install:
   - gem update --system # https://docs.travis-ci.com/user/languages/ruby/#Upgrading-RubyGems
   - gem install bundler
+  - npm install -g karma karma-jasmine karma-chrome-launcher
   - google-chrome-stable --headless --disable-gpu --remote-debugging-port=9222 http://localhost &
 
 rvm:
@@ -19,6 +20,7 @@ rvm:
 
 env:
   global:
+    - CHROME_BIN=google-chrome-stable
     - NOKOGIRI_USE_SYSTEM_LIBRARIES=true
   matrix:
     - "RAILS_VERSION=5.2.0"

Rakefile

@@ -6,14 +6,5 @@ Dir.glob('tasks/*.rake').each { |r| import r }
 
 require 'rspec/core/rake_task'
 require 'engine_cart/rake_task'
-require 'jasmine'
-load 'jasmine/tasks/jasmine.rake'
-
-# Set up the test application prior to running jasmine tasks.
-task 'jasmine:require' => :setup_test_server
-task :setup_test_server do
-  require 'engine_cart'
-  EngineCart.load_application!
-end
 
 task default: [:ci]

karma.conf.js

@@ -0,0 +1,71 @@
+// Karma configuration
+// Generated on Mon Nov 19 2018 13:01:16 GMT-0600 (Central Standard Time)
+
+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: [
+      'spec/javascripts/helpers/jquery.js',
+      'app/assets/javascripts/**/*.js',
+      'spec/javascripts/behavior_spec.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: {
+    },
+
+
+    // 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: ['ChromeHeadless'],
+
+
+    // Continuous Integration mode
+    // if true, Karma captures browsers, runs the tests and exits
+    singleRun: true,
+
+    // Concurrency level
+    // how many browser should be started simultaneous
+    concurrency: Infinity
+  })
+}

spec/javascripts/behavior_spec.js

@@ -1,9 +1,7 @@
 describe("toggleCheckbox", function() { 
-
-it("toggles the value between 1 and 0", function() {
+  it("toggles the value between 1 and 0", function() {
     var html = '<input type="checkbox" name="select_all" id="select_all" value="0" class="ev-select-all"/>';
     var toggled = $.fn.browseEverything.toggleCheckbox($(html)[0]);
     expect($(toggled)[0].value).toEqual("1");
   });
-
 });