1 files changed, 58 insertions, 0 deletions
diff --git a/devtools/client/framework/browser-toolbox/test/browser_browser_toolbox_print_preview.js b/devtools/client/framework/browser-toolbox/test/browser_browser_toolbox_print_preview.js
new file mode 100644
index 0000000000..81ff0808fb
--- /dev/null
+++ b/devtools/client/framework/browser-toolbox/test/browser_browser_toolbox_print_preview.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// There are shutdown issues for which multiple rejections are left uncaught.
+// See bug 1018184 for resolving these issues.
+const { PromiseTestUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/PromiseTestUtils.sys.mjs"
+);
+PromiseTestUtils.allowMatchingRejectionsGlobally(/File closed/);
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/devtools/client/inspector/test/shared-head.js",
+  this
+);
+
+// On debug test machine, it takes about 50s to run the test.
+requestLongerTimeout(4);
+
+// Test that the MultiProcessBrowserToolbox can be opened when print preview is
+// started, and can select elements in the print preview document.
+add_task(async function () {
+  // Forces the Browser Toolbox to open on the inspector by default
+  await pushPref("devtools.browsertoolbox.panel", "inspector");
+
+  // Enable Multiprocess Browser Toolbox
+  await pushPref("devtools.browsertoolbox.scope", "everything");
+
+  // Open the tab *after* opening the Browser Toolbox in order to force creating the remote frames
+  // late and exercise frame target watching code.
+  await addTab(`data:text/html,<div id="test-div">PRINT PREVIEW TEST</div>`);
+
+  info("Start the print preview for the current tab");
+  document.getElementById("cmd_print").doCommand();
+
+  const ToolboxTask = await initBrowserToolboxTask();
+  await ToolboxTask.importFunctions({
+    getNodeFront,
+    getNodeFrontInFrames,
+    selectNode,
+    // selectNodeInFrames depends on selectNode, getNodeFront, getNodeFrontInFrames.
+    selectNodeInFrames,
+  });
+
+  const hasCloseButton = await ToolboxTask.spawn(null, async () => {
+    /* global gToolbox */
+    const inspector = gToolbox.getPanel("inspector");
+
+    info("Select the #test-div element in the printpreview document");
+    await selectNodeInFrames(
+      ['browser[printpreview="true"]', "#test-div"],
+      inspector
+    );
+    return !!gToolbox.doc.getElementById("toolbox-close");
+  });
+  ok(!hasCloseButton, "Browser toolbox doesn't have a close button");
+
+  await ToolboxTask.destroy();
+});