Added Karma configuration for running JS tests

.gitignore

@@ -45,3 +45,6 @@ nosetests.xml
 # PyCharm
 .idea
 
+# node
+node_modules
+npm-debug.log

.travis.yml

@@ -4,7 +4,12 @@ python:
 install:
   - "pip install -r requirements/test.txt --use-mirrors"
   - "pip install -e ."
+  - "npm install"
+before_script:
+  - export DISPLAY=:99.0
+  - sh -e /etc/init.d/xvfb start
 script:
   - "python manage.py test"
   - "python manage.py harvest"
+  - "npm test"
   - "python setup.py install"

README.rst

@@ -15,6 +15,22 @@ for development purposes, run::
 The second line is necessary to register edx-tim's XBlock so that it will show
 up in the XBlock workbench.
 
+Running Tests
+=============
+
+To run the Python test suite:
+
+.. code:: bash
+
+    python manage.py test
+
+To run the JavaScript test suite (after installing `node <http://nodejs.org/download/>`_)
+
+.. code:: bash
+
+    npm install && npm test
+
+
 License
 =======
 

apps/openassessment/xblock/static/js/spec/test.js

+/*
+Dummy test to verify that Karma is working.
+Replace this with a real test when we've written JS with non-trivial logic.
+*/
+describe("A suite", function() {
+  it("contains spec with an expectation", function() {
+    expect(true).toBe(true);
+  });
+});

karma.conf.js

+// base path, that will be used to resolve files and exclude
+basePath = '.';
+
+// list of files / patterns to load in the browser
+files = [
+  JASMINE,
+  JASMINE_ADAPTER,
+  './**/src/*.js',
+  './**/spec/*.js'
+];
+
+// list of files to exclude
+exclude = [
+    "karma.conf.js"
+];
+
+// use dots reporter, as travis terminal does not support escaping sequences
+// possible values: 'dots', 'progress', 'junit', 'teamcity'
+// CLI --reporters progress
+reporters = ['progress'];
+
+// web server port
+// CLI --port 9876
+port = 9876;
+
+// cli runner port
+// CLI --runner-port 9100
+runnerPort = 9100;
+
+// enable / disable colors in the output (reporters and logs)
+// CLI --colors --no-colors
+colors = true;
+
+// level of logging
+// possible values: LOG_DISABLE || LOG_ERROR || LOG_WARN || LOG_INFO || LOG_DEBUG
+// CLI --log-level debug
+logLevel = LOG_INFO;
+
+// enable / disable watching file and executing tests whenever any file changes
+// CLI --auto-watch --no-auto-watch
+autoWatch = true;
+
+// Start these browsers, currently available:
+// - Chrome
+// - ChromeCanary
+// - Firefox
+// - Opera
+// - Safari (only Mac)
+// - PhantomJS
+// - IE (only Windows)
+// CLI --browsers Chrome,Firefox,Safari
+browsers = ["Firefox"];
+
+// If browser does not capture in given timeout [ms], kill it
+// CLI --capture-timeout 5000
+captureTimeout = 5000;
+
+// Auto run tests on start (when browsers are captured) and exit
+// CLI --single-run --no-single-run
+singleRun = true;
+
+// report which specs are slower than 500ms
+// CLI --report-slower-than 500
+reportSlowerThan = 500;

package.json

+{
+    "devDependencies": {"karma": "~0.8"},
+    "scripts": {"test": "./node_modules/.bin/karma start"}
+}