1 files changed, 53 insertions, 0 deletions
diff --git a/devtools/server/tests/browser/browser_canvasframe_helper_02.js b/devtools/server/tests/browser/browser_canvasframe_helper_02.js
new file mode 100644
index 0000000000..bd54a03933
--- /dev/null
+++ b/devtools/server/tests/browser/browser_canvasframe_helper_02.js
@@ -0,0 +1,53 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that the CanvasFrameAnonymousContentHelper does not insert content in
+// XUL windows.
+
+add_task(async function () {
+  const tab = await addTab(
+    "chrome://mochitests/content/browser/devtools/server/tests/browser/test-window.xhtml"
+  );
+
+  await SpecialPowers.spawn(tab.linkedBrowser, [], async function () {
+    const { require } = ChromeUtils.importESModule(
+      "resource://devtools/shared/loader/Loader.sys.mjs"
+    );
+    const {
+      HighlighterEnvironment,
+    } = require("resource://devtools/server/actors/highlighters.js");
+    const {
+      CanvasFrameAnonymousContentHelper,
+    } = require("resource://devtools/server/actors/highlighters/utils/markup.js");
+    const doc = content.document;
+
+    const nodeBuilder = () => {
+      const root = doc.createElement("div");
+      const child = doc.createElement("div");
+      child.style = "width:200px;height:200px;background:red;";
+      child.id = "child-element";
+      child.className = "child-element";
+      child.textContent = "test element";
+      root.appendChild(child);
+      return root;
+    };
+
+    info("Building the helper");
+    const env = new HighlighterEnvironment();
+    env.initFromWindow(doc.defaultView);
+    const helper = new CanvasFrameAnonymousContentHelper(env, nodeBuilder);
+
+    ok(!helper.content, "The AnonymousContent was not inserted in the window");
+    ok(
+      !helper.getTextContentForElement("child-element"),
+      "No text content is returned"
+    );
+
+    env.destroy();
+    helper.destroy();
+  });
+
+  gBrowser.removeCurrentTab();
+});