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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 0000000000..1fff1821ff
--- /dev/null
+++ b/devtools/client/shared/test/browser_cubic-bezier-04.js
@@ -0,0 +1,59 @@
+/* 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("resource://devtools/client/shared/widgets/CubicBezierWidget.js");
+const {
+  PRESETS,
+} = require("resource://devtools/client/shared/widgets/CubicBezierPresets.js");
+
+const TEST_URI = CHROME_URL_ROOT + "doc_cubic-bezier-01.html";
+
+add_task(async function () {
+  const { host, doc } = await createHost("bottom", TEST_URI);
+
+  const container = doc.querySelector("#cubic-bezier-container");
+  const 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"
+  );
+  const 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 ${category} has been added.`
+    );
+  });
+
+  info("Checking that each of the presets and its preview have been added");
+  Object.keys(PRESETS).forEach(category => {
+    Object.keys(PRESETS[category]).forEach(presetLabel => {
+      const preset = container.querySelector("#" + presetLabel);
+      ok(preset, `${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();
+});