3 files changed, 79 insertions, 0 deletions
diff --git a/browser/base/content/test/backforward/.eslintrc.js b/browser/base/content/test/backforward/.eslintrc.js
new file mode 100644
index 0000000000..1779fd7f1c
--- /dev/null
+++ b/browser/base/content/test/backforward/.eslintrc.js
@@ -0,0 +1,5 @@
+"use strict";
+
+module.exports = {
+  extends: ["plugin:mozilla/browser-test"],
+};
diff --git a/browser/base/content/test/backforward/browser.ini b/browser/base/content/test/backforward/browser.ini
new file mode 100644
index 0000000000..292963db3b
--- /dev/null
+++ b/browser/base/content/test/backforward/browser.ini
@@ -0,0 +1 @@
+[browser_longpress_session_history_menu.js]
diff --git a/browser/base/content/test/backforward/browser_longpress_session_history_menu.js b/browser/base/content/test/backforward/browser_longpress_session_history_menu.js
new file mode 100644
index 0000000000..d3ccd6ccdc
--- /dev/null
+++ b/browser/base/content/test/backforward/browser_longpress_session_history_menu.js
@@ -0,0 +1,73 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Tests that the session history can be shown by long-pressing the back button.
+// And that middle-click opens one tab (as a regression test for bug 1657992).
+add_task(async function restore_history_entry_by_middle_click() {
+  let tab1 = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "http://example.com"
+  );
+
+  await SpecialPowers.spawn(tab1.linkedBrowser, [], () => {
+    content.history.pushState(null, null, "2.html");
+    content.history.pushState(null, null, "3.html");
+  });
+
+  await new Promise(resolve => SessionStore.getSessionHistory(tab1, resolve));
+
+  let backButton = document.getElementById("back-button");
+  // This is the popup (clone of backForwardMenu) from SetClickAndHoldHandlers.
+  let historyMenu = backButton.firstElementChild;
+
+  info("waiting for the history menu to open");
+
+  let popupShownPromise = BrowserTestUtils.waitForEvent(
+    historyMenu,
+    "popupshown"
+  );
+
+  // Trigger gClickAndHoldListenersOnElement logic in browser.js to open the
+  // history menu that opens after a long press.
+  EventUtils.synthesizeMouseAtCenter(backButton, { type: "mousedown" });
+  let event = await popupShownPromise;
+  EventUtils.synthesizeMouseAtCenter(backButton, { type: "mouseup" });
+
+  info("Waiting for menu items to be populated");
+  await new Promise(resolve => SessionStore.getSessionHistory(tab1, resolve));
+
+  SimpleTest.isDeeply(
+    Array.from(event.target.children, node => node.getAttribute("uri")),
+    [
+      "http://example.com/3.html",
+      "http://example.com/2.html",
+      "http://example.com/",
+    ],
+    "Expected session history items"
+  );
+  let historyMenuItem = event.target.children[1];
+
+  let popupHiddenPromise = BrowserTestUtils.waitForEvent(
+    historyMenu,
+    "popuphidden"
+  );
+
+  let tabRestoredPromise = BrowserTestUtils.waitForEvent(
+    gBrowser.tabContainer,
+    "SSTabRestored"
+  );
+
+  await EventUtils.sendMouseEvent(
+    { type: "click", button: 1 },
+    historyMenuItem
+  );
+
+  info("Waiting for history menu to be hidden");
+  await popupHiddenPromise;
+  info("Waiting for history item to be restored in a new tab");
+  let newTab = (await tabRestoredPromise).target;
+  is(newTab.linkedBrowser.currentURI.spec, "http://example.com/2.html");
+
+  BrowserTestUtils.removeTab(newTab);
+  BrowserTestUtils.removeTab(tab1);
+});