1 files changed, 52 insertions, 0 deletions
diff --git a/devtools/client/framework/test/browser_toolbox_remoteness_change.js b/devtools/client/framework/test/browser_toolbox_remoteness_change.js
new file mode 100644
index 0000000000..af5f105214
--- /dev/null
+++ b/devtools/client/framework/test/browser_toolbox_remoteness_change.js
@@ -0,0 +1,52 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const URL_1 = "about:robots";
+const URL_2 =
+  "data:text/html;charset=UTF-8," +
+  encodeURIComponent('<div id="remote-page">foo</div>');
+
+// Testing navigation between processes
+add_task(async function () {
+  info(`Testing navigation between processes`);
+
+  info("Open a tab on a URL supporting only running in parent process");
+  const tab = await addTab(URL_1);
+  is(
+    tab.linkedBrowser.currentURI.spec,
+    URL_1,
+    "We really are on the expected document"
+  );
+  is(
+    tab.linkedBrowser.getAttribute("remote"),
+    "",
+    "And running in parent process"
+  );
+
+  const toolbox = await openToolboxForTab(tab);
+
+  info("Navigate to a URL supporting remote process");
+  await navigateTo(URL_2);
+
+  is(
+    tab.linkedBrowser.getAttribute("remote"),
+    "true",
+    "Navigated to a data: URI and switching to remote"
+  );
+
+  info("Veryify we are inspecting the new document");
+  const console = await toolbox.selectTool("webconsole");
+  const { ui } = console.hud;
+  ui.wrapper.dispatchEvaluateExpression("document.location.href");
+  await waitUntil(() => ui.outputNode.querySelector(".result"));
+  const url = ui.outputNode.querySelector(".result");
+
+  ok(
+    url.textContent.includes(URL_2),
+    "The console inspects the second document"
+  );
+
+  const { client } = toolbox.target;
+  await toolbox.destroy();
+  ok(client._transportClosed, "The client is closed after closing the toolbox");
+});