Change rake test:js to run headless.

To run tests in browser, use rake test:js_in_browser.

Signed-off-by: Anurag Priyam <anurag08priyam@gmail.com>

Gemfile

@@ -10,3 +10,5 @@ gem 'puma',                 '~> 2.8.1'
 gem 'sinatra',              '~> 1.4.4'
 
 gem 'minitest',             '~> 5.3.1'
+gem 'capybara',             '~> 2.4.4'
+gem 'capybara-webkit',      '~> 1.3.1'

Rakefile

@@ -153,8 +153,8 @@ task 'test:pl' do
   system 'prove -I tests/pl/lib -I . -lr tests'
 end
 
-desc 'Run unit tests for JS code.'
-task 'test:js' do
+desc 'Run unit tests for JS code in browser.'
+task 'test:js_in_browser' do
   require_relative 'app'
   static = Class.new(Sinatra::Base)
   static.public_dir = Dir.pwd
@@ -163,4 +163,10 @@ task 'test:js' do
   App.init_server.serve(static)
 end
 
+desc 'Run unit tests for JS code headless, using Capybara.'
+task "test:js" do |t|
+  require_relative 'tests/js/runner'
+  CapybaraJasmine.new.run
+end
+
 task default: [:deps, :'db:init', :'db:migrate', :configure]

tests/js/runner.js

@@ -158,6 +158,36 @@ require(['jasmine/jasmine']
             timer: new jasmine.Timer()
         });
 
+        /**
+         * Extend jsApiReporter for console output via Capybara.
+         */
+        jasmineInterface.jsApiReporter.consoleOutput = function () {
+            var errors = [];
+            var output = [];
+            this.passed = true;
+            for (var i in this.specs()) {
+                var spec = this.specs()[i];
+                var name = spec.fullName;
+                if (spec.status === 'failed') {
+                    for (var j in spec.failedExpectations) {
+                        var item = spec.failedExpectations[j];
+                        if (!item.passed) {
+                            this.passed = false;
+                            errors.push("Failed: " + name + "\n" + item.message);
+                            output.push("F");
+                        }
+                    }
+                } else {
+                    output.push(".");
+                }
+            }
+            output = output.join("")
+            if (errors.length > 0) {
+                output += "\n\n" + errors.join("\n\n") + "\n";
+            }
+            return output;
+        };
+
         /**
          * The `jsApiReporter` also receives spec results, and is used by any environment that needs to extract the results  from JavaScript.
          */

tests/js/runner.rb

@@ -0,0 +1,27 @@
+require 'sinatra'
+require 'capybara-webkit'
+
+# Run Jasmine specs headless using Capybara.
+class CapybaraJasmine
+
+  include Capybara::DSL
+
+  def initialize
+    Capybara.current_driver = :webkit
+    Capybara.app = app
+  end
+
+  def run
+    visit '/tests/js/index.html'
+    sleep 0.05 until evaluate_script("window.jsApiReporter &&
+                                   window.jsApiReporter.finished")
+    puts evaluate_script "window.jsApiReporter.consoleOutput()"
+    exit evaluate_script "window.jsApiReporter.passed"
+  end
+
+  def app
+    static = Class.new(Sinatra::Base)
+    static.public_dir = Dir.pwd
+    static
+  end
+end