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diff --git a/devtools/client/shared/test/browser_cubic-bezier-04.js b/devtools/client/shared/test/browser_cubic-bezier-04.js
new file mode 100644
index 000000000..102428035
--- /dev/null
+++ b/devtools/client/shared/test/browser_cubic-bezier-04.js
@@ -0,0 +1,50 @@
+/* vim: set ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests that the CubicBezierPresetWidget generates markup.
+
+const {CubicBezierPresetWidget} =
+  require("devtools/client/shared/widgets/CubicBezierWidget");
+const {PRESETS} = require("devtools/client/shared/widgets/CubicBezierPresets");
+
+const TEST_URI = `data:text/html,<div id="cubic-bezier-container" />`;
+
+add_task(function* () {
+  let [host,, doc] = yield createHost("bottom", TEST_URI);
+
+  let container = doc.querySelector("#cubic-bezier-container");
+  let w = new CubicBezierPresetWidget(container);
+
+  info("Checking that the presets are created in the parent");
+  ok(container.querySelector(".preset-pane"),
+     "The preset pane has been added");
+
+  ok(container.querySelector("#preset-categories"),
+     "The preset categories have been added");
+  let categories = container.querySelectorAll(".category");
+  is(categories.length, Object.keys(PRESETS).length,
+     "The preset categories have been added");
+  Object.keys(PRESETS).forEach(category => {
+    ok(container.querySelector("#" + category), `${category} has been added`);
+    ok(container.querySelector("#preset-category-" + category),
+       `The preset list for ${category} has been added.`);
+  });
+
+  info("Checking that each of the presets and its preview have been added");
+  Object.keys(PRESETS).forEach(category => {
+    Object.keys(PRESETS[category]).forEach(presetLabel => {
+      let preset = container.querySelector("#" + presetLabel);
+      ok(preset, `${presetLabel} has been added`);
+      ok(preset.querySelector("canvas"),
+         `${presetLabel}'s canvas preview has been added`);
+      ok(preset.querySelector("p"),
+         `${presetLabel}'s label has been added`);
+    });
+  });
+
+  w.destroy();
+  host.destroy();
+});