diff -r 000000000000 -r 6474c204b198 browser/devtools/tilt/test/browser_tilt_visualizer.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/tilt/test/browser_tilt_visualizer.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,126 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+function test() {
+  if (!isTiltEnabled()) {
+    info("Skipping notifications test because Tilt isn't enabled.");
+    return;
+  }
+  if (!isWebGLSupported()) {
+    info("Skipping visualizer test because WebGL isn't supported.");
+    return;
+  }
+
+  let webGLError = false;
+  let webGLLoad = false;
+
+  let visualizer = new TiltVisualizer({
+    chromeWindow: window,
+    contentWindow: gBrowser.selectedBrowser.contentWindow,
+    parentNode: gBrowser.selectedBrowser.parentNode,
+    notifications: Tilt.NOTIFICATIONS,
+    tab: gBrowser.selectedTab,
+
+    onError: function onWebGLError()
+    {
+      webGLError = true;
+    },
+
+    onLoad: function onWebGLLoad()
+    {
+      webGLLoad = true;
+    }
+  });
+  visualizer.init();
+
+  ok(webGLError ^ webGLLoad,
+    "The WebGL context should either be created or not.");
+
+  if (webGLError) {
+    info("Skipping visualizer test because WebGL couldn't be initialized.");
+    return;
+  }
+
+  ok(visualizer.canvas,
+    "Visualizer constructor should have created a child canvas object.");
+  ok(visualizer.presenter,
+    "Visualizer constructor should have created a child presenter object.");
+  ok(visualizer.controller,
+    "Visualizer constructor should have created a child controller object.");
+  ok(visualizer.isInitialized(),
+    "The visualizer should have been initialized properly.");
+  ok(visualizer.presenter.isInitialized(),
+    "The visualizer presenter should have been initialized properly.");
+  ok(visualizer.controller.isInitialized(),
+    "The visualizer controller should have been initialized properly.");
+
+  testPresenter(visualizer.presenter);
+  testController(visualizer.controller);
+
+  visualizer.removeOverlay();
+  is(visualizer.canvas.parentNode, null,
+    "The visualizer canvas wasn't removed from the parent node.");
+
+  visualizer.cleanup();
+  is(visualizer.presenter, undefined,
+    "The visualizer presenter wasn't destroyed.");
+  is(visualizer.controller, undefined,
+    "The visualizer controller wasn't destroyed.");
+  is(visualizer.canvas, undefined,
+    "The visualizer canvas wasn't destroyed.");
+}
+
+function testPresenter(presenter) {
+  ok(presenter._renderer,
+    "The presenter renderer wasn't initialized properly.");
+  ok(presenter._visualizationProgram,
+    "The presenter visualizationProgram wasn't initialized properly.");
+  ok(presenter._texture,
+    "The presenter texture wasn't initialized properly.");
+  ok(!presenter._meshStacks,
+    "The presenter meshStacks shouldn't be initialized yet.");
+  ok(!presenter._meshWireframe,
+    "The presenter meshWireframe shouldn't be initialized yet.");
+  ok(presenter._traverseData,
+    "The presenter nodesInformation wasn't initialized properly.");
+  ok(presenter._highlight,
+    "The presenter highlight wasn't initialized properly.");
+  ok(presenter._highlight.disabled,
+    "The presenter highlight should be initially disabled.");
+  ok(isApproxVec(presenter._highlight.v0, [0, 0, 0]),
+    "The presenter highlight first vertex should be initially zeroed.");
+  ok(isApproxVec(presenter._highlight.v1, [0, 0, 0]),
+    "The presenter highlight second vertex should be initially zeroed.");
+  ok(isApproxVec(presenter._highlight.v2, [0, 0, 0]),
+    "The presenter highlight third vertex should be initially zeroed.");
+  ok(isApproxVec(presenter._highlight.v3, [0, 0, 0]),
+    "The presenter highlight fourth vertex should be initially zeroed.");
+  ok(presenter.transforms,
+    "The presenter transforms wasn't initialized properly.");
+  is(presenter.transforms.zoom, 1,
+    "The presenter transforms zoom should be initially 1.");
+  ok(isApproxVec(presenter.transforms.offset, [0, 0, 0]),
+    "The presenter transforms offset should be initially zeroed.");
+  ok(isApproxVec(presenter.transforms.translation, [0, 0, 0]),
+    "The presenter transforms translation should be initially zeroed.");
+  ok(isApproxVec(presenter.transforms.rotation, [0, 0, 0, 1]),
+    "The presenter transforms rotation should be initially set to identity.");
+
+  presenter.setTranslation([1, 2, 3]);
+  presenter.setRotation([5, 6, 7, 8]);
+
+  ok(isApproxVec(presenter.transforms.translation, [1, 2, 3]),
+    "The presenter transforms translation wasn't modified as it should");
+  ok(isApproxVec(presenter.transforms.rotation, [5, 6, 7, 8]),
+    "The presenter transforms rotation wasn't modified as it should");
+  ok(presenter._redraw,
+    "The new transforms should have issued a redraw request.");
+}
+
+function testController(controller) {
+  ok(controller.arcball,
+    "The controller arcball wasn't initialized properly.");
+  ok(!controller.coordinates,
+    "The presenter meshWireframe shouldn't be initialized yet.");
+}