1 files changed, 44 insertions, 0 deletions
diff --git a/toolkit/components/reader/test/browser_readerMode_bc_reuse.js b/toolkit/components/reader/test/browser_readerMode_bc_reuse.js
new file mode 100644
index 0000000000..9ac0e367ca
--- /dev/null
+++ b/toolkit/components/reader/test/browser_readerMode_bc_reuse.js
@@ -0,0 +1,44 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_PATH = getRootDirectory(gTestPath).replace(
+  "chrome://mochitests/content",
+  "http://example.com"
+);
+
+const TEST_URL = TEST_PATH + "readerModeArticle.html";
+
+add_task(async function test_TODO() {
+  await BrowserTestUtils.withNewTab(
+    "data:text/html,<p>Opener",
+    async browser => {
+      let newTabPromise = BrowserTestUtils.waitForNewTab(
+        gBrowser,
+        TEST_URL,
+        true
+      );
+      await SpecialPowers.spawn(browser, [TEST_URL], url => {
+        content.eval(`window.x = open("${url}", "_blank");`);
+      });
+      let newTab = await newTabPromise;
+
+      let readerButton = document.getElementById("reader-mode-button");
+      await BrowserTestUtils.waitForMutationCondition(
+        readerButton,
+        { attributes: true },
+        () => !readerButton.hidden
+      );
+      let tabLoaded = promiseTabLoadEvent(newTab);
+      readerButton.click();
+      await tabLoaded;
+      isnot(
+        newTab.linkedBrowser.browsingContext.group.id,
+        browser.browsingContext.group.id,
+        "BC should be in a different group now."
+      );
+      BrowserTestUtils.removeTab(newTab);
+    }
+  );
+});