Merge pull request #66 from edx/will/js-refactor

Studio-editing JavaScript Refactor

.gitignore

@@ -15,7 +15,6 @@ var
 sdist
 develop-eggs
 .installed.cfg
-lib
 lib64
 __pycache__
 
@@ -49,3 +48,4 @@ htmlcov
 # node
 node_modules
 npm-debug.log
+coverage

.travis.yml

@@ -4,7 +4,6 @@ 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
@@ -12,7 +11,6 @@ before_script:
 script:
   - "python manage.py test"
   - "python manage.py harvest"
-  - "npm test"
   - "python setup.py install"
 after_success:
   coveralls

README.rst

@@ -27,18 +27,12 @@ up in the XBlock workbench.
 Running Tests
 =============
 
-To run the Python test suite:
+To run the unit 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/openassessmentblock.py

@@ -252,6 +252,7 @@ class OpenAssessmentBlock(XBlock, SubmissionMixin, PeerAssessmentMixin, SelfAsse
         context = Context(context_dict)
         frag = Fragment(template.render(context))
         frag.add_css(load("static/css/openassessment.css"))
+        frag.add_javascript(load("static/js/src/oa_server.js"))
         frag.add_javascript(load("static/js/src/oa_base.js"))
         frag.initialize_js('OpenAssessmentBlock')
         return frag

apps/openassessment/xblock/static/js/fixtures/oa_edit.html

+<div id="openassessment-edit">
+    <textarea class="openassessment-editor"></textarea>
+    <input type="button" class="openassessment-save-button" value="Save"/>
+    <input type="button" class="openassessment-cancel-button" value="Cancel"/>
+</div>

apps/openassessment/xblock/static/js/lib/jasmine-jquery.js

+/*!
+Jasmine-jQuery: a set of jQuery helpers for Jasmine tests.
+
+Version 1.7.0
+
+https://github.com/velesin/jasmine-jquery
+
+Copyright (c) 2010-2013 Wojciech Zawistowski, Travis Jeffery
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
++function (jasmine, $) { "use strict";
+
+  jasmine.spiedEventsKey = function (selector, eventName) {
+    return [$(selector).selector, eventName].toString()
+  }
+
+  jasmine.getFixtures = function () {
+    return jasmine.currentFixtures_ = jasmine.currentFixtures_ || new jasmine.Fixtures()
+  }
+
+  jasmine.getStyleFixtures = function () {
+    return jasmine.currentStyleFixtures_ = jasmine.currentStyleFixtures_ || new jasmine.StyleFixtures()
+  }
+
+  jasmine.Fixtures = function () {
+    this.containerId = 'jasmine-fixtures'
+    this.fixturesCache_ = {}
+    this.fixturesPath = 'spec/javascripts/fixtures'
+  }
+
+  jasmine.Fixtures.prototype.set = function (html) {
+    this.cleanUp()
+    return this.createContainer_(html)
+  }
+
+  jasmine.Fixtures.prototype.appendSet= function (html) {
+    this.addToContainer_(html)
+  }
+
+  jasmine.Fixtures.prototype.preload = function () {
+    this.read.apply(this, arguments)
+  }
+
+  jasmine.Fixtures.prototype.load = function () {
+    this.cleanUp()
+    this.createContainer_(this.read.apply(this, arguments))
+  }
+
+  jasmine.Fixtures.prototype.appendLoad = function () {
+    this.addToContainer_(this.read.apply(this, arguments))
+  }
+
+  jasmine.Fixtures.prototype.read = function () {
+    var htmlChunks = []
+      , fixtureUrls = arguments
+
+    for(var urlCount = fixtureUrls.length, urlIndex = 0; urlIndex < urlCount; urlIndex++) {
+      htmlChunks.push(this.getFixtureHtml_(fixtureUrls[urlIndex]))
+    }
+
+    return htmlChunks.join('')
+  }
+
+  jasmine.Fixtures.prototype.clearCache = function () {
+    this.fixturesCache_ = {}
+  }
+
+  jasmine.Fixtures.prototype.cleanUp = function () {
+    $('#' + this.containerId).remove()
+  }
+
+  jasmine.Fixtures.prototype.sandbox = function (attributes) {
+    var attributesToSet = attributes || {}
+    return $('<div id="sandbox" />').attr(attributesToSet)
+  }
+
+  jasmine.Fixtures.prototype.createContainer_ = function (html) {
+    var container = $('<div>')
+    .attr('id', this.containerId)
+    .html(html)
+
+    $(document.body).append(container)
+    return container
+  }
+
+  jasmine.Fixtures.prototype.addToContainer_ = function (html){
+    var container = $(document.body).find('#'+this.containerId).append(html)
+    if(!container.length){
+      this.createContainer_(html)
+    }
+  }
+
+  jasmine.Fixtures.prototype.getFixtureHtml_ = function (url) {
+    if (typeof this.fixturesCache_[url] === 'undefined') {
+      this.loadFixtureIntoCache_(url)
+    }
+    return this.fixturesCache_[url]
+  }
+
+  jasmine.Fixtures.prototype.loadFixtureIntoCache_ = function (relativeUrl) {
+    var self = this
+      , url = this.makeFixtureUrl_(relativeUrl)
+      , request = $.ajax({
+        async: false, // must be synchronous to guarantee that no tests are run before fixture is loaded
+        cache: false,
+        url: url,
+        success: function (data, status, $xhr) {
+          self.fixturesCache_[relativeUrl] = $xhr.responseText
+        },
+        error: function (jqXHR, status, errorThrown) {
+          throw new Error('Fixture could not be loaded: ' + url + ' (status: ' + status + ', message: ' + errorThrown.message + ')')
+        }
+      })
+  }
+
+  jasmine.Fixtures.prototype.makeFixtureUrl_ = function (relativeUrl){
+    return this.fixturesPath.match('/$') ? this.fixturesPath + relativeUrl : this.fixturesPath + '/' + relativeUrl
+  }
+
+  jasmine.Fixtures.prototype.proxyCallTo_ = function (methodName, passedArguments) {
+    return this[methodName].apply(this, passedArguments)
+  }
+
+
+  jasmine.StyleFixtures = function () {
+    this.fixturesCache_ = {}
+    this.fixturesNodes_ = []
+    this.fixturesPath = 'spec/javascripts/fixtures'
+  }
+
+  jasmine.StyleFixtures.prototype.set = function (css) {
+    this.cleanUp()
+    this.createStyle_(css)
+  }
+
+  jasmine.StyleFixtures.prototype.appendSet = function (css) {
+    this.createStyle_(css)
+  }
+
+  jasmine.StyleFixtures.prototype.preload = function () {
+    this.read_.apply(this, arguments)
+  }
+
+  jasmine.StyleFixtures.prototype.load = function () {
+    this.cleanUp()
+    this.createStyle_(this.read_.apply(this, arguments))
+  }
+
+  jasmine.StyleFixtures.prototype.appendLoad = function () {
+    this.createStyle_(this.read_.apply(this, arguments))
+  }
+
+  jasmine.StyleFixtures.prototype.cleanUp = function () {
+    while(this.fixturesNodes_.length) {
+      this.fixturesNodes_.pop().remove()
+    }
+  }
+
+  jasmine.StyleFixtures.prototype.createStyle_ = function (html) {
+    var styleText = $('<div></div>').html(html).text()
+      , style = $('<style>' + styleText + '</style>')
+
+    this.fixturesNodes_.push(style)
+    $('head').append(style)
+  }
+
+  jasmine.StyleFixtures.prototype.clearCache = jasmine.Fixtures.prototype.clearCache
+  jasmine.StyleFixtures.prototype.read_ = jasmine.Fixtures.prototype.read
+  jasmine.StyleFixtures.prototype.getFixtureHtml_ = jasmine.Fixtures.prototype.getFixtureHtml_
+  jasmine.StyleFixtures.prototype.loadFixtureIntoCache_ = jasmine.Fixtures.prototype.loadFixtureIntoCache_
+  jasmine.StyleFixtures.prototype.makeFixtureUrl_ = jasmine.Fixtures.prototype.makeFixtureUrl_
+  jasmine.StyleFixtures.prototype.proxyCallTo_ = jasmine.Fixtures.prototype.proxyCallTo_
+
+  jasmine.getJSONFixtures = function () {
+    return jasmine.currentJSONFixtures_ = jasmine.currentJSONFixtures_ || new jasmine.JSONFixtures()
+  }
+
+  jasmine.JSONFixtures = function () {
+    this.fixturesCache_ = {}
+    this.fixturesPath = 'spec/javascripts/fixtures/json'
+  }
+
+  jasmine.JSONFixtures.prototype.load = function () {
+    this.read.apply(this, arguments)
+    return this.fixturesCache_
+  }
+
+  jasmine.JSONFixtures.prototype.read = function () {
+    var fixtureUrls = arguments
+
+    for(var urlCount = fixtureUrls.length, urlIndex = 0; urlIndex < urlCount; urlIndex++) {
+      this.getFixtureData_(fixtureUrls[urlIndex])
+    }
+
+    return this.fixturesCache_
+  }
+
+  jasmine.JSONFixtures.prototype.clearCache = function () {
+    this.fixturesCache_ = {}
+  }
+
+  jasmine.JSONFixtures.prototype.getFixtureData_ = function (url) {
+    if (!this.fixturesCache_[url]) this.loadFixtureIntoCache_(url)
+    return this.fixturesCache_[url]
+  }
+
+  jasmine.JSONFixtures.prototype.loadFixtureIntoCache_ = function (relativeUrl) {
+    var self = this
+      , url = this.fixturesPath.match('/$') ? this.fixturesPath + relativeUrl : this.fixturesPath + '/' + relativeUrl
+
+    $.ajax({
+      async: false, // must be synchronous to guarantee that no tests are run before fixture is loaded
+      cache: false,
+      dataType: 'json',
+      url: url,
+      success: function (data) {
+        self.fixturesCache_[relativeUrl] = data
+      },
+      error: function (jqXHR, status, errorThrown) {
+        throw new Error('JSONFixture could not be loaded: ' + url + ' (status: ' + status + ', message: ' + errorThrown.message + ')')
+      }
+    })
+  }
+
+  jasmine.JSONFixtures.prototype.proxyCallTo_ = function (methodName, passedArguments) {
+    return this[methodName].apply(this, passedArguments)
+  }
+
+  jasmine.jQuery = function () {}
+
+  jasmine.jQuery.browserTagCaseIndependentHtml = function (html) {
+    return $('<div/>').append(html).html()
+  }
+
+  jasmine.jQuery.elementToString = function (element) {
+    return $(element).map(function () { return this.outerHTML; }).toArray().join(', ')
+  }
+
+  jasmine.jQuery.matchersClass = {}
+
+  var data = {
+      spiedEvents: {}
+    , handlers:    []
+  }
+
+  jasmine.jQuery.events = {
+    spyOn: function (selector, eventName) {
+      var handler = function (e) {
+        data.spiedEvents[jasmine.spiedEventsKey(selector, eventName)] = jasmine.util.argsToArray(arguments)
+      }
+
+      $(selector).on(eventName, handler)
+      data.handlers.push(handler)
+
+      return {
+        selector: selector,
+        eventName: eventName,
+        handler: handler,
+        reset: function (){
+          delete data.spiedEvents[jasmine.spiedEventsKey(selector, eventName)]
+        }
+      }
+    },
+
+    args: function (selector, eventName) {
+      var actualArgs = data.spiedEvents[jasmine.spiedEventsKey(selector, eventName)]
+
+      if (!actualArgs) {
+        throw "There is no spy for " + eventName + " on " + selector.toString() + ". Make sure to create a spy using spyOnEvent."
+      }
+
+      return actualArgs
+    },
+
+    wasTriggered: function (selector, eventName) {
+      return !!(data.spiedEvents[jasmine.spiedEventsKey(selector, eventName)])
+    },
+
+    wasTriggeredWith: function (selector, eventName, expectedArgs, env) {
+      var actualArgs = jasmine.jQuery.events.args(selector, eventName).slice(1)
+      if (Object.prototype.toString.call(expectedArgs) !== '[object Array]') {
+        actualArgs = actualArgs[0]
+      }
+      return env.equals_(expectedArgs, actualArgs)
+    },
+
+    wasPrevented: function (selector, eventName) {
+      var args = data.spiedEvents[jasmine.spiedEventsKey(selector, eventName)]
+        , e = args ? args[0] : undefined
+
+      return e && e.isDefaultPrevented()
+    },
+
+    wasStopped: function (selector, eventName) {
+      var args = data.spiedEvents[jasmine.spiedEventsKey(selector, eventName)]
+        , e = args ? args[0] : undefined
+      return e && e.isPropagationStopped()
+    },
+
+    cleanUp: function () {
+      data.spiedEvents = {}
+      data.handlers    = []
+    }
+  }
+
+  var jQueryMatchers = {
+    toHaveClass: function (className) {
+      return this.actual.hasClass(className)
+    },
+
+    toHaveCss: function (css){
+      for (var prop in css){
+        var value = css[prop]
+        // see issue #147 on gh
+        ;if (value === 'auto' && this.actual.get(0).style[prop] === 'auto') continue
+        if (this.actual.css(prop) !== value) return false
+      }
+      return true
+    },
+
+    toBeVisible: function () {
+      return this.actual.is(':visible')
+    },
+
+    toBeHidden: function () {
+      return this.actual.is(':hidden')
+    },
+
+    toBeSelected: function () {
+      return this.actual.is(':selected')
+    },
+
+    toBeChecked: function () {
+      return this.actual.is(':checked')
+    },
+
+    toBeEmpty: function () {
+      return this.actual.is(':empty')
+    },
+
+    toBeInDOM: function () {
+      return $.contains(document.documentElement, this.actual[0])
+    },
+
+    toExist: function () {
+      return this.actual.length
+    },
+
+    toHaveLength: function (length) {
+      return this.actual.length === length
+    },
+
+    toHaveAttr: function (attributeName, expectedAttributeValue) {
+      return hasProperty(this.actual.attr(attributeName), expectedAttributeValue)
+    },
+
+    toHaveProp: function (propertyName, expectedPropertyValue) {
+      return hasProperty(this.actual.prop(propertyName), expectedPropertyValue)
+    },
+
+    toHaveId: function (id) {
+      return this.actual.attr('id') == id
+    },
+
+    toHaveHtml: function (html) {
+      return this.actual.html() == jasmine.jQuery.browserTagCaseIndependentHtml(html)
+    },
+
+    toContainHtml: function (html){
+      var actualHtml = this.actual.html()
+        , expectedHtml = jasmine.jQuery.browserTagCaseIndependentHtml(html)
+
+      return (actualHtml.indexOf(expectedHtml) >= 0)
+    },
+
+    toHaveText: function (text) {
+      var trimmedText = $.trim(this.actual.text())
+
+      if (text && $.isFunction(text.test)) {
+        return text.test(trimmedText)
+      } else {
+        return trimmedText == text
+      }
+    },
+
+    toContainText: function (text) {
+      var trimmedText = $.trim(this.actual.text())
+
+      if (text && $.isFunction(text.test)) {
+        return text.test(trimmedText)
+      } else {
+        return trimmedText.indexOf(text) != -1
+      }
+    },
+
+    toHaveValue: function (value) {
+      return this.actual.val() === value
+    },
+
+    toHaveData: function (key, expectedValue) {
+      return hasProperty(this.actual.data(key), expectedValue)
+    },
+
+    toBe: function (selector) {
+      return this.actual.is(selector)
+    },
+
+    toContain: function (selector) {
+      return this.actual.find(selector).length
+    },
+
+    toBeMatchedBy: function (selector) {
+      return this.actual.filter(selector).length
+    },
+
+    toBeDisabled: function (selector){
+      return this.actual.is(':disabled')
+    },
+
+    toBeFocused: function (selector) {
+      return this.actual[0] === this.actual[0].ownerDocument.activeElement
+    },
+
+    toHandle: function (event) {
+      var events = $._data(this.actual.get(0), "events")
+
+      if(!events || !event || typeof event !== "string") {
+        return false
+      }
+
+      var namespaces = event.split(".")
+        , eventType = namespaces.shift()
+        , sortedNamespaces = namespaces.slice(0).sort()
+        , namespaceRegExp = new RegExp("(^|\\.)" + sortedNamespaces.join("\\.(?:.*\\.)?") + "(\\.|$)")
+
+      if(events[eventType] && namespaces.length) {
+        for(var i = 0; i < events[eventType].length; i++) {
+          var namespace = events[eventType][i].namespace
+
+          if(namespaceRegExp.test(namespace)) {
+            return true
+          }
+        }
+      } else {
+        return events[eventType] && events[eventType].length > 0
+      }
+    },
+
+    toHandleWith: function (eventName, eventHandler) {
+      var normalizedEventName = eventName.split('.')[0]
+        , stack = $._data(this.actual.get(0), "events")[normalizedEventName]
+
+      for (var i = 0; i < stack.length; i++) {
+        if (stack[i].handler == eventHandler) return true
+      }
+
+      return false
+    }
+  }
+
+  var hasProperty = function (actualValue, expectedValue) {
+    if (expectedValue === undefined) return actualValue !== undefined
+
+    return actualValue === expectedValue
+  }
+
+  var bindMatcher = function (methodName) {
+    var builtInMatcher = jasmine.Matchers.prototype[methodName]
+
+    jasmine.jQuery.matchersClass[methodName] = function () {
+      if (this.actual
+        && (this.actual instanceof $
+          || jasmine.isDomNode(this.actual))) {
+            this.actual = $(this.actual)
+            var result = jQueryMatchers[methodName].apply(this, arguments)
+              , element
+
+            if (this.actual.get && (element = this.actual.get()[0]) && !$.isWindow(element) && element.tagName !== "HTML")
+              this.actual = jasmine.jQuery.elementToString(this.actual)
+
+            return result
+          }
+
+          if (builtInMatcher) {
+            return builtInMatcher.apply(this, arguments)
+          }
+
+          return false
+    }
+  }
+
+  for(var methodName in jQueryMatchers) {
+    bindMatcher(methodName)
+  }
+
+  beforeEach(function () {
+    this.addMatchers(jasmine.jQuery.matchersClass)
+    this.addMatchers({
+      toHaveBeenTriggeredOn: function (selector) {
+        this.message = function () {
+          return [
+            "Expected event " + this.actual + " to have been triggered on " + selector,
+            "Expected event " + this.actual + " not to have been triggered on " + selector
+          ]
+        }
+        return jasmine.jQuery.events.wasTriggered(selector, this.actual)
+      }
+    })
+
+    this.addMatchers({
+      toHaveBeenTriggered: function (){
+        var eventName = this.actual.eventName
+          , selector = this.actual.selector
+
+        this.message = function () {
+          return [
+            "Expected event " + eventName + " to have been triggered on " + selector,
+            "Expected event " + eventName + " not to have been triggered on " + selector
+          ]
+        }
+
+        return jasmine.jQuery.events.wasTriggered(selector, eventName)
+      }
+    })
+
+    this.addMatchers({
+      toHaveBeenTriggeredOnAndWith: function () {
+        var selector = arguments[0]
+          , expectedArgs = arguments[1]
+          , wasTriggered = jasmine.jQuery.events.wasTriggered(selector, this.actual)
+
+        this.message = function () {
+          if (wasTriggered) {
+            var actualArgs = jasmine.jQuery.events.args(selector, this.actual, expectedArgs)[1]
+            return [
+              "Expected event " + this.actual + " to have been triggered with " + jasmine.pp(expectedArgs) + "  but it was triggered with " + jasmine.pp(actualArgs),
+              "Expected event " + this.actual + " not to have been triggered with " + jasmine.pp(expectedArgs) + " but it was triggered with " + jasmine.pp(actualArgs)
+            ]
+          } else {
+            return [
+              "Expected event " + this.actual + " to have been triggered on " + selector,
+              "Expected event " + this.actual + " not to have been triggered on " + selector
+            ]
+          }
+        }
+
+        return wasTriggered && jasmine.jQuery.events.wasTriggeredWith(selector, this.actual, expectedArgs, this.env)
+      }
+    })
+
+    this.addMatchers({
+      toHaveBeenPreventedOn: function (selector) {
+        this.message = function () {
+          return [
+            "Expected event " + this.actual + " to have been prevented on " + selector,
+            "Expected event " + this.actual + " not to have been prevented on " + selector
+          ]
+        }
+
+        return jasmine.jQuery.events.wasPrevented(selector, this.actual)
+      }
+    })
+
+    this.addMatchers({
+      toHaveBeenPrevented: function () {
+        var eventName = this.actual.eventName
+          , selector = this.actual.selector
+        this.message = function () {
+          return [
+            "Expected event " + eventName + " to have been prevented on " + selector,
+            "Expected event " + eventName + " not to have been prevented on " + selector
+          ]
+        }
+
+        return jasmine.jQuery.events.wasPrevented(selector, eventName)
+      }
+    })
+
+    this.addMatchers({
+      toHaveBeenStoppedOn: function (selector) {
+        this.message = function () {
+          return [
+            "Expected event " + this.actual + " to have been stopped on " + selector,
+            "Expected event " + this.actual + " not to have been stopped on " + selector
+          ]
+        }
+
+        return jasmine.jQuery.events.wasStopped(selector, this.actual)
+      }
+    })
+
+    this.addMatchers({
+      toHaveBeenStopped: function () {
+        var eventName = this.actual.eventName
+          , selector = this.actual.selector
+        this.message = function () {
+          return [
+            "Expected event " + eventName + " to have been stopped on " + selector,
+            "Expected event " + eventName + " not to have been stopped on " + selector
+          ]
+        }
+        return jasmine.jQuery.events.wasStopped(selector, eventName)
+      }
+    })
+
+    jasmine.getEnv().addEqualityTester(function (a, b) {
+      if(a instanceof $ && b instanceof $) {
+        if(a.size() != b.size()) {
+          return jasmine.undefined
+        }
+        else if(a.is(b)) {
+          return true
+        }
+      }
+
+      return jasmine.undefined
+    })
+  })
+
+  afterEach(function () {
+    jasmine.getFixtures().cleanUp()
+    jasmine.getStyleFixtures().cleanUp()
+    jasmine.jQuery.events.cleanUp()
+  })
+
+  window.readFixtures = function () {
+    return jasmine.getFixtures().proxyCallTo_('read', arguments)
+  }
+
+  window.preloadFixtures = function () {
+    jasmine.getFixtures().proxyCallTo_('preload', arguments)
+  }
+
+  window.loadFixtures = function () {
+    jasmine.getFixtures().proxyCallTo_('load', arguments)
+  }
+
+  window.appendLoadFixtures = function () {
+    jasmine.getFixtures().proxyCallTo_('appendLoad', arguments)
+  }
+
+  window.setFixtures = function (html) {
+    return jasmine.getFixtures().proxyCallTo_('set', arguments)
+  }
+
+  window.appendSetFixtures = function () {
+    jasmine.getFixtures().proxyCallTo_('appendSet', arguments)
+  }
+
+  window.sandbox = function (attributes) {
+    return jasmine.getFixtures().sandbox(attributes)
+  }
+
+  window.spyOnEvent = function (selector, eventName) {
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\ No newline at end of file

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

+/*
+Tests for OA XBlock editing.
+*/
+
+describe("OpenAssessment.StudioUI", function() {
+
+    var runtime = {
+        notify: function(type, data) {}
+    };
+
+    // Stub server that returns dummy data or reports errors.
+    var StubServer = function() {
+        this.loadError = false;
+        this.updateError = false;
+        this.xml = '<openassessment></openassessment>';
+
+        this.errorPromise = $.Deferred(function(defer) {
+            defer.rejectWith(this, ['Test error']);
+        }).promise();
+
+        this.loadXml = function() {
+            var xml = this.xml;
+            if (!this.loadError) {
+                return $.Deferred(function(defer) {
+                    defer.resolveWith(this, [xml]);
+                }).promise();
+            }
+            else {
+                return this.errorPromise;
+            }
+        }
+
+        this.updateXml = function(xml) {
+            if (!this.updateError) {
+                this.xml = xml;
+                return $.Deferred(function(defer) {
+                    defer.resolve();
+                }).promise();
+            }
+            else {
+                return this.errorPromise;
+            }
+        }
+    };
+
+    var server = null;
+    var ui = null;
+
+    beforeEach(function() {
+
+        // Load the DOM fixture
+        jasmine.getFixtures().fixturesPath = 'base/fixtures'
+        loadFixtures('oa_edit.html');
+
+        // Create the stub server
+        server = new StubServer();
+
+        // Mock the runtime
+        spyOn(runtime, 'notify');
+
+        // Create the object under test
+        var el = $('#openassessment-edit').get(0);
+        ui = new OpenAssessment.StudioUI(runtime, el, server);
+    });
+
+    it("loads the XML definition", function() {
+        // Initialize the UI
+        ui.load()
+
+        // Expect that the XML definition was loaded
+        var contents = ui.codeBox.getValue();
+        expect(contents).toEqual('<openassessment></openassessment>');
+    });
+
+    it("saves the XML definition", function() {
+        // Update the XML
+        ui.codeBox.setValue('<openassessment>test!</openassessment>');
+
+        // Save the updated XML
+        ui.save();
+
+        // Expect the saving notification to start/end
+        expect(runtime.notify).toHaveBeenCalledWith('save', {state: 'start'});
+        expect(runtime.notify).toHaveBeenCalledWith('save', {state: 'end'});
+
+        // Expect the server's XML to have been updated
+        expect(server.xml).toEqual('<openassessment>test!</openassessment>');
+    });
+
+    it("cancels editing", function() {
+        ui.cancel();
+        expect(runtime.notify).toHaveBeenCalledWith('cancel', {});
+    });
+
+    it("displays an error when server reports a load XML error", function() {
+        server.loadError = true;
+        ui.load();
+        expect(runtime.notify).toHaveBeenCalledWith('error', {msg: 'Test error'});
+    });
+
+    it("displays an error when server reports an update XML error", function() {
+        server.updateError = true;
+        ui.save('<openassessment>test!</openassessment>');
+        expect(runtime.notify).toHaveBeenCalledWith('error', {msg: 'Test error'});
+    });
+
+});

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

+/*
+Tests for OA XBlock server interactions.
+*/
+
+describe("OpenAssessment.Server", function() {
+
+    // Stub runtime implementation that returns the handler as the URL
+    var runtime = {
+        handlerUrl: function(element, handler) { return "/" + handler }
+    }
+
+    var server = null;
+
+    /**
+    Stub AJAX requests.
+
+    Args:
+        success (bool): If true, return a promise that resolves;
+            otherwise, return a promise that fails.
+
+        responseData(object): Data to pass to the caller if the AJAX
+            call completes successfully.
+    **/
+    var stubAjax = function(success, responseData) {
+        spyOn($, 'ajax').andReturn(
+            $.Deferred(function(defer) {
+                if (success) { defer.resolveWith(this, [responseData]); }
+                else { defer.reject() }
+           }).promise()
+        );
+    }
+
+    beforeEach(function() {
+        // Create the server
+        // Since the runtime is a stub implementation that ignores the element passed to it,
+        // we can set the element parameter to null.
+        server = new OpenAssessment.Server(runtime, null);
+    });
+
+    it("Renders the XBlock as HTML", function() {
+        stubAjax(true, "<div>Open Assessment</div>");
+
+        var loadedHtml = "";
+        server.render('submission').done(function(html) {
+            loadedHtml = html;
+        });
+
+        expect(loadedHtml).toEqual("<div>Open Assessment</div>");
+        expect($.ajax).toHaveBeenCalledWith({
+            url: '/render_submission', type: "POST", dataType: "html"
+        });
+    });
+
+    it("Sends a submission the XBlock", function() {
+        // Status, student ID, attempt number
+        stubAjax(true, [true, 1, 2]);
+
+        var receivedStudentId = null;
+        var receivedAttemptNum = null;
+        server.submit("This is only a test").done(
+            function(studentId, attemptNum) {
+                receivedStudentId = studentId;
+                receivedAttemptNum = attemptNum;
+            }
+        );
+
+        expect(receivedStudentId).toEqual(1);
+        expect(receivedAttemptNum).toEqual(2);
+        expect($.ajax).toHaveBeenCalledWith({
+            url: '/submit',
+            type: "POST",
+            data: {submission: "This is only a test"}
+        });
+    });
+
+    it("loads the XBlock's XML definition", function() {
+        stubAjax(true, { success: true, xml: "<openassessment />" });
+
+        var loadedXml = "";
+        server.loadXml().done(function(xml) {
+            loadedXml = xml;
+        });
+
+        expect(loadedXml).toEqual('<openassessment />');
+        expect($.ajax).toHaveBeenCalledWith({
+            url: '/xml', type: "POST", data: '""'
+        });
+    });
+
+    it("updates the XBlock's XML definition", function() {
+        stubAjax(true, { success: true });
+
+        server.updateXml('<openassessment />');
+        expect($.ajax).toHaveBeenCalledWith({
+            url: '/update_xml', type: "POST",
+            data: JSON.stringify({xml: '<openassessment />'})
+        });
+    });
+
+    it("informs the caller of an Ajax error when rendering as HTML", function() {
+        stubAjax(false, null);
+
+        var receivedMsg = "";
+        server.render('submission').fail(function(msg) {
+            receivedMsg = msg;
+        });
+
+        expect(receivedMsg).toEqual("Could not contact server.");
+    });
+
+    it("informs the caller of an Ajax error when sending a submission", function() {
+        stubAjax(false, null);
+
+        var receivedErrorCode = "";
+        var receivedErrorMsg = "";
+        server.submit('This is only a test.').fail(
+            function(errorCode, errorMsg) {
+                receivedErrorCode = errorCode;
+                receivedErrorMsg = errorMsg;
+            }
+        );
+
+        expect(receivedErrorCode).toEqual("AJAX");
+        expect(receivedErrorMsg).toEqual("Could not contact server.");
+    });
+
+    it("informs the caller of an server error when sending a submission", function() {
+        stubAjax(true, [false, "ENODATA", "Error occurred!"]);
+
+        var receivedErrorCode = "";
+        var receivedErrorMsg = "";
+        server.submit('This is only a test.').fail(
+            function(errorCode, errorMsg) {
+                receivedErrorCode = errorCode;
+                receivedErrorMsg = errorMsg;
+            }
+        );
+
+        expect(receivedErrorCode).toEqual("ENODATA");
+        expect(receivedErrorMsg).toEqual("Error occurred!");
+    });
+
+    it("informs the caller of an Ajax error when loading XML", function() {
+        stubAjax(false, null);
+
+        var receivedMsg = null;
+        server.loadXml().fail(function(msg) {
+            receivedMsg = msg;
+        });
+
+        expect(receivedMsg).toEqual("Could not contact server.");
+    });
+
+    it("informs the caller of an Ajax error when updating XML", function() {
+        stubAjax(false, null);
+
+        var receivedMsg = null;
+        server.updateXml('test').fail(function(msg) {
+            receivedMsg = msg;
+        });
+
+        expect(receivedMsg).toEqual("Could not contact server.");
+    });
+
+    it("informs the caller of a server error when loading XML", function() {
+        stubAjax(true, { success: false, msg: "Test error" });
+
+        var receivedMsg = null;
+        server.updateXml('test').fail(function(msg) {
+            receivedMsg = msg;
+        });
+
+        expect(receivedMsg).toEqual("Test error");
+    });
+
+    it("informs the caller of a server error when updating XML", function() {
+        stubAjax(true, { success: false, msg: "Test error" });
+
+        var receivedMsg = null;
+        server.loadXml().fail(function(msg) {
+            receivedMsg = msg;
+        });
+
+        expect(receivedMsg).toEqual("Test error");
+    });
+});

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);
-  });
-});

apps/openassessment/xblock/static/js/src/oa_base.js

@@ -123,6 +123,7 @@ function OpenAssessmentBlock(runtime, element) {
         $.ajax({
             type: "POST",
             url: renderPeerUrl,
+            dataType: "html",
             success:  function(data) {
                 $(peerListItem, element).replaceWith(data);
                 collapse($(peerListItem, element));
@@ -132,6 +133,7 @@ function OpenAssessmentBlock(runtime, element) {
         $.ajax({
             type: "POST",
             url: renderSelfUrl,
+            dataType: "html",
             success:  function(data) {
                 $(selfListItem, element).replaceWith(data);
                 collapse($(selfListItem, element));
@@ -140,6 +142,7 @@ function OpenAssessmentBlock(runtime, element) {
 
         $.ajax({
             type: "POST",
+            dataType: "html",
             url: renderGradeUrl,
             success:  function(data) {
                 $(gradeListItem, element).replaceWith(data);

apps/openassessment/xblock/static/js/src/oa_edit.js

 /* JavaScript for Studio editing view of Open Assessment XBlock */
-function OpenAssessmentBlock(runtime, element) {
 
-    function displayError(errorMsg) {
-        runtime.notify('error', {msg: errorMsg});
-    }
 
-    // Update editor with the XBlock's current content
-    function updateEditorFromXBlock(editor) {
-        $.ajax({
-            type: "POST",
-            url: runtime.handlerUrl(element, 'xml'),
-            data: "\"\"",
-            success: function(data) {
-                if (data.success) {
-                    editor.setValue(data.xml);
-                }
+/* Namespace for open assessment */
+if (typeof OpenAssessment == "undefined" || !OpenAssessment) {
+    OpenAssessment = {};
+}
 
-                else {
-                    displayError(data.msg);
-                }
-            }
+
+/**
+Interface for editing UI in Studio.
+The constructor initializes the DOM for editing.
+
+Args:
+    runtime (Runtime): an XBlock runtime instance.
+    element (DOM element): The DOM element representing this XBlock.
+    server (OpenAssessment.Server): The interface to the XBlock server.
+
+Returns:
+    OpenAssessment.StudioUI
+**/
+OpenAssessment.StudioUI = function(runtime, element, server) {
+    this.runtime = runtime;
+    this.server = server;
+
+    // Initialize the code box
+    this.codeBox = CodeMirror.fromTextArea(
+        $(element).find('.openassessment-editor').first().get(0),
+        {mode: "xml", lineNumbers: true, lineWrapping: true}
+    );
+
+    // Install click handlers
+    var ui = this;
+    $(element).find('.openassessment-save-button').click(
+        function(eventData) {
+            ui.save();
     });
-    }
 
-    function initializeEditor() {
-        var textAreas = $(element).find('.openassessment-editor');
-        if (textAreas.length < 1) {
-            console.warn("Could not find element for OpenAssessmentBlock XML editor");
-            return null;
+    $(element).find('.openassessment-cancel-button').click(
+        function(eventData) {
+            ui.cancel();
+    });
+};
+
+
+OpenAssessment.StudioUI.prototype = {
+
+    /**
+    Load the XBlock XML definition from the server and display it in the UI.
+    **/
+    load: function() {
+        var ui = this;
+        this.server.loadXml().done(
+            function(xml) {
+                ui.codeBox.setValue(xml);
+            }).fail(function(msg) {
+                ui.showError(msg);
             }
-        else {
-            return CodeMirror.fromTextArea(
-                textAreas[0], {mode: "xml", lineNumbers: true, lineWrapping: true}
         );
-        }
-    }
+    },
 
-    function initializeSaveButton(editor) {
-        saveButtons = $(element).find('.openassessment-save-button');
-        if (saveButtons.length < 1) {
-            console.warn("Could not find element for OpenAssessmentBlock save button");
-        }
-        else {
-            saveButtons.click(function (eventObject) {
+    /**
+    Save the updated XML definition to the server.
+    **/
+    save: function() {
         // Notify the client-side runtime that we are starting
         // to save so it can show the "Saving..." notification
-                runtime.notify('save', {state: 'start'});
-
-                // POST the updated description to the XBlock
-                // The server-side code is responsible for validating and persisting
-                // the updated content.
-                $.ajax({
-                    type: "POST",
-                    url: runtime.handlerUrl(element, 'update_xml'),
-                    data: JSON.stringify({ xml: editor.getValue() }),
-                    success: function(data) {
+        this.runtime.notify('save', {state: 'start'});
+
+        // Send the updated XML to the server
+        var xml = this.codeBox.getValue();
+        var ui = this;
+        this.server.updateXml(xml).done(function() {
             // Notify the client-side runtime that we finished saving
             // so it can hide the "Saving..." notification.
-                        if (data.success) {
-                            runtime.notify('save', {state: 'end'});
-                        }
-
-                        // Display an error alert if any errors occurred
-                        else {
-                            displayError(data.msg);
-                        }
-                    }
-                });
+            ui.runtime.notify('save', {state: 'end'});
+        }).fail(function(msg) {
+            ui.showError(msg);
         });
-        }
-    }
-
-    function initializeCancelButton(editor) {
-        cancelButtons = $(element).find('.openassessment-cancel-button');
-        if (cancelButtons.length < 1) {
-            console.warn("Could not find element for OpenAssessmentBlock cancel button");
-        }
-        else {
-            cancelButtons.click(function (eventObject) {
-                // Revert to the XBlock's current content
-                updateEditorFromXBlock(editor);
+    },
 
+    /**
+    Cancel editing.
+    **/
+    cancel: function() {
         // Notify the client-side runtime so it will close the editing modal.
-                runtime.notify('cancel', {});
-            });
-        }
-    }
+        this.runtime.notify('cancel', {});
+    },
 
-    $(function ($) {
-        editor = initializeEditor();
-        if (editor) {
-            updateEditorFromXBlock(editor);
-            initializeSaveButton(editor);
-            initializeCancelButton(editor);
+    /**
+    Display an error message to the user.
+
+    Args:
+        errorMsg (string): The error message to display.
+    **/
+    showError: function(errorMsg) {
+        this.runtime.notify('error', {msg: errorMsg});
     }
+};
+
+
+/* XBlock entry point for Studio view */
+function OpenAssessmentEditor(runtime, element) {
+
+    /**
+    Initialize the editing interface on page load.
+    **/
+    $(function($) {
+        var server = new OpenAssessment.Server(runtime, element);
+        var ui = new OpenAssessment.StudioUI(runtime, element, server);
+        ui.load();
     });
 }

apps/openassessment/xblock/static/js/src/oa_server.js

+/* JavaScript interface for interacting with server-side OpenAssessment XBlock */
+
+/* Namespace for open assessment */
+if (typeof OpenAssessment == "undefined" || !OpenAssessment) {
+    OpenAssessment = {};
+}
+
+
+/**
+Interface for server-side XBlock handlers.
+
+Args:
+    runtime (Runtime): An XBlock runtime instance.
+    element (DOM element): The DOM element representing this XBlock.
+
+Returns:
+    OpenAssessment.Server
+**/
+OpenAssessment.Server = function(runtime, element) {
+    this.runtime = runtime;
+    this.element = element;
+};
+
+
+OpenAssessment.Server.prototype = {
+
+    /**
+    Construct the URL for the handler, specific to one instance of the XBlock on the page.
+
+    Args:
+        handler (string): The name of the XBlock handler.
+
+    Returns:
+        URL (string)
+    **/
+    url: function(handler) {
+        return this.runtime.handlerUrl(this.element, handler);
+    },
+
+    /**
+    Render the XBlock.
+
+    Args:
+        component (string): The component to render.
+
+    Returns:
+        A JQuery promise, which resolves with the HTML of the rendered XBlock
+        and fails with an error message.
+
+    Example:
+        server.render('submission').done(
+            function(html) { console.log(html); }
+        ).fail(
+            function(err) { console.log(err); }
+        )
+    **/
+    render: function(component) {
+        var url = this.url('render_' + component);
+        return $.Deferred(function(defer) {
+            $.ajax({
+                url: url,
+                type: "POST",
+                dataType: "html"
+            }).done(function(data) {
+                defer.resolveWith(this, [data]);
+            }).fail(function(data) {
+                defer.rejectWith(this, ['Could not contact server.']);
+            })
+        }).promise();
+    },
+
+    /**
+    Send a submission to the XBlock.
+
+    Args:
+        submission (string): The text of the student's submission.
+
+    Returns:
+        A JQuery promise, which resolves with the student's ID and attempt number
+        if the call was successful and fails with an status code and error message otherwise.
+    **/
+    submit: function(submission) {
+        var url = this.url('submit');
+        return $.Deferred(function(defer) {
+            $.ajax({
+                type: "POST",
+                url: url,
+                data: {submission: submission}
+            }).done(function(data) {
+                var success = data[0];
+                if (success) {
+                    var studentId = data[1];
+                    var attemptNum = data[2];
+                    defer.resolveWith(this, [studentId, attemptNum]);
+                }
+                else {
+                    var errorNum = data[1];
+                    var errorMsg = data[2];
+                    defer.rejectWith(this, [errorNum, errorMsg]);
+                }
+            }).fail(function(data) {
+                defer.rejectWith(this, ["AJAX", "Could not contact server."]);
+            })
+        }).promise();
+    },
+
+    /**
+    Load the XBlock's XML definition from the server.
+
+    Returns:
+        A JQuery promise, which resolves with the XML definition
+        and fails with an error message.
+
+    Example:
+        server.loadXml().done(
+            function(xml) { console.log(xml); }
+        ).fail(
+            function(err) { console.log(err); }
+        );
+    **/
+    loadXml: function() {
+        var url = this.url('xml');
+        return $.Deferred(function(defer) {
+            $.ajax({
+                type: "POST", url: url, data: "\"\""
+            }).done(function(data) {
+                if (data.success) { defer.resolveWith(this, [data.xml]); }
+                else { defer.rejectWith(this, [data.msg]); }
+            }).fail(function(data) {
+                defer.rejectWith(this, ['Could not contact server.']);
+            });
+        }).promise();
+    },
+
+    /**
+    Update the XBlock's XML definition on the server.
+
+    Returns:
+        A JQuery promise, which resolves with no arguments
+        and fails with an error message.
+
+    Example usage:
+        server.updateXml(xml).done(
+            function() {}
+        ).fail(
+            function(err) { console.log(err); }
+        );
+    **/
+    updateXml: function(xml) {
+        var url = this.url('update_xml');
+        var payload = JSON.stringify({xml: xml});
+        return $.Deferred(function(defer) {
+            $.ajax({
+                type: "POST", url: url, data: payload
+            }).done(function(data) {
+                if (data.success) { defer.resolve() }
+                else { defer.rejectWith(this, [data.msg]); }
+            }).fail(function(data) {
+                defer.rejectWith(this, ['Could not contact server.']);
+            });
+        }).promise();
+    }
+};

apps/openassessment/xblock/studio_mixin.py

@@ -38,8 +38,9 @@ class StudioMixin(object):
         """
         rendered_template = get_template('openassessmentblock/oa_edit.html').render(Context({}))
         frag = Fragment(rendered_template)
+        frag.add_javascript(pkg_resources.resource_string(__name__, "static/js/src/oa_server.js"))
         frag.add_javascript(pkg_resources.resource_string(__name__, "static/js/src/oa_edit.js"))
-        frag.initialize_js('OpenAssessmentBlock')
+        frag.initialize_js('OpenAssessmentEditor')
         return frag
 
     @XBlock.json_handler

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;
+// Karma configuration
+
+module.exports = function(config) {
+  config.set({
+
+    // base path that will be used to resolve all patterns (eg. files, exclude)
+    basePath: 'apps/openassessment/xblock/static/js',
+
+
+    // frameworks to use
+    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
+    frameworks: ['jasmine'],
+
+
+    // list of files / patterns to load in the browser
+    files: [
+      'lib/jquery.min.js',
+      'lib/*.js',
+      'src/*.js',
+      'spec/*.js',
+
+      // fixtures
+      {
+        pattern: 'fixtures/*.html',
+        served: true, included: false
+      },
+    ],
+
+
+    // 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: {
+      'src/*.js': 'coverage'
+    },
+
+
+    // test results reporter to use
+    // possible values: 'dots', 'progress'
+    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
+    reporters: ['progress', 'coverage'],
+
+    coverageReporter: {
+        type : 'text'
+    },
+
+    // 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: false,
+
+
+    // start these browsers
+    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
+    browsers: ['Firefox'],
+
+
+    // Continuous Integration mode
+    // if true, Karma captures browsers, runs the tests and exits
+    singleRun: true
+
+  });
+
+};

manage.py

@@ -15,3 +15,7 @@ if __name__ == "__main__":
     from django.core.management import execute_from_command_line
 
     execute_from_command_line(sys.argv)
+
+    # Execute JavaScript tests
+    if 'test' in sys.argv:
+        os.system('npm install && npm test')

package.json

 {
-    "devDependencies": {"karma": "~0.8"},
-    "scripts": {"test": "./node_modules/.bin/karma start"}
+  "devDependencies": {
+    "karma": "~0.11",
+    "karma-jasmine": "0.1.3",
+    "karma-coverage": "0.1.5",
+    "karma-firefox-launcher": "~0.1.3"
+  },
+  "scripts": {
+    "test": "./node_modules/karma/bin/karma start"
+  }
 }