diff --git a/common/lib/capa/capa/tests/test_files/js/.gitignore b/common/lib/capa/capa/tests/test_files/js/.gitignore
new file mode 100644
index 0000000000..d2910668f2
--- /dev/null
+++ b/common/lib/capa/capa/tests/test_files/js/.gitignore
@@ -0,0 +1,4 @@
+test_problem_display.js
+test_problem_generator.js
+test_problem_grader.js
+xproblem.js
\ No newline at end of file
diff --git a/common/lib/capa/capa/tests/test_files/js/test_problem_display.js b/common/lib/capa/capa/tests/test_files/js/test_problem_display.js
deleted file mode 100644
index b61569acea..0000000000
--- a/common/lib/capa/capa/tests/test_files/js/test_problem_display.js
+++ /dev/null
@@ -1,49 +0,0 @@
-// Generated by CoffeeScript 1.4.0
-(function() {
-  var MinimaxProblemDisplay, root,
-    __hasProp = {}.hasOwnProperty,
-    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
-
-  MinimaxProblemDisplay = (function(_super) {
-
-    __extends(MinimaxProblemDisplay, _super);
-
-    function MinimaxProblemDisplay(state, submission, evaluation, container, submissionField, parameters) {
-      this.state = state;
-      this.submission = submission;
-      this.evaluation = evaluation;
-      this.container = container;
-      this.submissionField = submissionField;
-      this.parameters = parameters != null ? parameters : {};
-      MinimaxProblemDisplay.__super__.constructor.call(this, this.state, this.submission, this.evaluation, this.container, this.submissionField, this.parameters);
-    }
-
-    MinimaxProblemDisplay.prototype.render = function() {};
-
-    MinimaxProblemDisplay.prototype.createSubmission = function() {
-      var id, value, _ref, _results;
-      this.newSubmission = {};
-      if (this.submission != null) {
-        _ref = this.submission;
-        _results = [];
-        for (id in _ref) {
-          value = _ref[id];
-          _results.push(this.newSubmission[id] = value);
-        }
-        return _results;
-      }
-    };
-
-    MinimaxProblemDisplay.prototype.getCurrentSubmission = function() {
-      return this.newSubmission;
-    };
-
-    return MinimaxProblemDisplay;
-
-  })(XProblemDisplay);
-
-  root = typeof exports !== "undefined" && exports !== null ? exports : this;
-
-  root.TestProblemDisplay = TestProblemDisplay;
-
-}).call(this);
diff --git a/common/lib/capa/capa/tests/test_files/js/test_problem_generator.js b/common/lib/capa/capa/tests/test_files/js/test_problem_generator.js
deleted file mode 100644
index 4b1d133723..0000000000
--- a/common/lib/capa/capa/tests/test_files/js/test_problem_generator.js
+++ /dev/null
@@ -1,29 +0,0 @@
-// Generated by CoffeeScript 1.4.0
-(function() {
-  var TestProblemGenerator, root,
-    __hasProp = {}.hasOwnProperty,
-    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
-
-  TestProblemGenerator = (function(_super) {
-
-    __extends(TestProblemGenerator, _super);
-
-    function TestProblemGenerator(seed, parameters) {
-      this.parameters = parameters != null ? parameters : {};
-      TestProblemGenerator.__super__.constructor.call(this, seed, this.parameters);
-    }
-
-    TestProblemGenerator.prototype.generate = function() {
-      this.problemState.value = this.parameters.value;
-      return this.problemState;
-    };
-
-    return TestProblemGenerator;
-
-  })(XProblemGenerator);
-
-  root = typeof exports !== "undefined" && exports !== null ? exports : this;
-
-  root.generatorClass = TestProblemGenerator;
-
-}).call(this);
diff --git a/common/lib/capa/capa/tests/test_files/js/test_problem_grader.js b/common/lib/capa/capa/tests/test_files/js/test_problem_grader.js
deleted file mode 100644
index 80d7ad1690..0000000000
--- a/common/lib/capa/capa/tests/test_files/js/test_problem_grader.js
+++ /dev/null
@@ -1,50 +0,0 @@
-// Generated by CoffeeScript 1.4.0
-(function() {
-  var TestProblemGrader, root,
-    __hasProp = {}.hasOwnProperty,
-    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
-
-  TestProblemGrader = (function(_super) {
-
-    __extends(TestProblemGrader, _super);
-
-    function TestProblemGrader(submission, problemState, parameters) {
-      this.submission = submission;
-      this.problemState = problemState;
-      this.parameters = parameters != null ? parameters : {};
-      TestProblemGrader.__super__.constructor.call(this, this.submission, this.problemState, this.parameters);
-    }
-
-    TestProblemGrader.prototype.solve = function() {
-      return this.solution = {
-        0: this.problemState.value
-      };
-    };
-
-    TestProblemGrader.prototype.grade = function() {
-      var allCorrect, id, value, valueCorrect, _ref;
-      if (!(this.solution != null)) {
-        this.solve();
-      }
-      allCorrect = true;
-      _ref = this.solution;
-      for (id in _ref) {
-        value = _ref[id];
-        valueCorrect = this.submission != null ? value === this.submission[id] : false;
-        this.evaluation[id] = valueCorrect;
-        if (!valueCorrect) {
-          allCorrect = false;
-        }
-      }
-      return allCorrect;
-    };
-
-    return TestProblemGrader;
-
-  })(XProblemGrader);
-
-  root = typeof exports !== "undefined" && exports !== null ? exports : this;
-
-  root.graderClass = TestProblemGrader;
-
-}).call(this);
diff --git a/common/lib/capa/capa/tests/test_files/js/xproblem.js b/common/lib/capa/capa/tests/test_files/js/xproblem.js
deleted file mode 100644
index 55a469f7c1..0000000000
--- a/common/lib/capa/capa/tests/test_files/js/xproblem.js
+++ /dev/null
@@ -1,78 +0,0 @@
-// Generated by CoffeeScript 1.4.0
-(function() {
-  var XProblemDisplay, XProblemGenerator, XProblemGrader, root;
-
-  XProblemGenerator = (function() {
-
-    function XProblemGenerator(seed, parameters) {
-      this.parameters = parameters != null ? parameters : {};
-      this.random = new MersenneTwister(seed);
-      this.problemState = {};
-    }
-
-    XProblemGenerator.prototype.generate = function() {
-      return console.error("Abstract method called: XProblemGenerator.generate");
-    };
-
-    return XProblemGenerator;
-
-  })();
-
-  XProblemDisplay = (function() {
-
-    function XProblemDisplay(state, submission, evaluation, container, submissionField, parameters) {
-      this.state = state;
-      this.submission = submission;
-      this.evaluation = evaluation;
-      this.container = container;
-      this.submissionField = submissionField;
-      this.parameters = parameters != null ? parameters : {};
-    }
-
-    XProblemDisplay.prototype.render = function() {
-      return console.error("Abstract method called: XProblemDisplay.render");
-    };
-
-    XProblemDisplay.prototype.updateSubmission = function() {
-      return this.submissionField.val(JSON.stringify(this.getCurrentSubmission()));
-    };
-
-    XProblemDisplay.prototype.getCurrentSubmission = function() {
-      return console.error("Abstract method called: XProblemDisplay.getCurrentSubmission");
-    };
-
-    return XProblemDisplay;
-
-  })();
-
-  XProblemGrader = (function() {
-
-    function XProblemGrader(submission, problemState, parameters) {
-      this.submission = submission;
-      this.problemState = problemState;
-      this.parameters = parameters != null ? parameters : {};
-      this.solution = null;
-      this.evaluation = {};
-    }
-
-    XProblemGrader.prototype.solve = function() {
-      return console.error("Abstract method called: XProblemGrader.solve");
-    };
-
-    XProblemGrader.prototype.grade = function() {
-      return console.error("Abstract method called: XProblemGrader.grade");
-    };
-
-    return XProblemGrader;
-
-  })();
-
-  root = typeof exports !== "undefined" && exports !== null ? exports : this;
-
-  root.XProblemGenerator = XProblemGenerator;
-
-  root.XProblemDisplay = XProblemDisplay;
-
-  root.XProblemGrader = XProblemGrader;
-
-}).call(this);