2 files changed, 234 insertions, 0 deletions
diff --git a/browser/base/content/test/gesture/browser.ini b/browser/base/content/test/gesture/browser.ini
new file mode 100644
index 0000000000..1ae3ad6df5
--- /dev/null
+++ b/browser/base/content/test/gesture/browser.ini
@@ -0,0 +1 @@
+[browser_gesture_navigation.js]
diff --git a/browser/base/content/test/gesture/browser_gesture_navigation.js b/browser/base/content/test/gesture/browser_gesture_navigation.js
new file mode 100644
index 0000000000..667a1f07b6
--- /dev/null
+++ b/browser/base/content/test/gesture/browser_gesture_navigation.js
@@ -0,0 +1,233 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+add_setup(async () => {
+  // Disable window occlusion. See bug 1733955 / bug 1779559.
+  if (navigator.platform.indexOf("Win") == 0) {
+    await SpecialPowers.pushPrefEnv({
+      set: [["widget.windows.window_occlusion_tracking.enabled", false]],
+    });
+  }
+});
+
+add_task(async () => {
+  // Open a new browser window to make sure there is no navigation history.
+  const newBrowser = await BrowserTestUtils.openNewBrowserWindow({});
+
+  let event = {
+    direction: SimpleGestureEvent.DIRECTION_LEFT,
+  };
+  ok(!newBrowser.gGestureSupport._shouldDoSwipeGesture(event));
+
+  event = {
+    direction: SimpleGestureEvent.DIRECTION_RIGHT,
+  };
+  ok(!newBrowser.gGestureSupport._shouldDoSwipeGesture(event));
+
+  await BrowserTestUtils.closeWindow(newBrowser);
+});
+
+function createSimpleGestureEvent(type, direction) {
+  let event = document.createEvent("SimpleGestureEvent");
+  event.initSimpleGestureEvent(
+    type,
+    false /* canBubble */,
+    false /* cancelableArg */,
+    window,
+    0 /* detail */,
+    0 /* screenX */,
+    0 /* screenY */,
+    0 /* clientX */,
+    0 /* clientY */,
+    false /* ctrlKey */,
+    false /* altKey */,
+    false /* shiftKey */,
+    false /* metaKey */,
+    0 /* button */,
+    null /* relatedTarget */,
+    0 /* allowedDirections */,
+    direction,
+    1 /* delta */
+  );
+  return event;
+}
+
+add_task(async () => {
+  await SpecialPowers.pushPrefEnv({
+    set: [["ui.swipeAnimationEnabled", false]],
+  });
+
+  // Open a new browser window and load two pages so that the browser can go
+  // back but can't go forward.
+  const newWindow = await BrowserTestUtils.openNewBrowserWindow({});
+
+  // gHistroySwipeAnimation gets initialized in a requestIdleCallback so we need
+  // to wait for the initialization.
+  await TestUtils.waitForCondition(() => {
+    return (
+      // There's no explicit notification for the initialization, so we wait
+      // until `isLTR` matches the browser locale state.
+      newWindow.gHistorySwipeAnimation.isLTR != Services.locale.isAppLocaleRTL
+    );
+  });
+
+  BrowserTestUtils.loadURIString(
+    newWindow.gBrowser.selectedBrowser,
+    "about:mozilla"
+  );
+  await BrowserTestUtils.browserLoaded(
+    newWindow.gBrowser.selectedBrowser,
+    false,
+    "about:mozilla"
+  );
+  BrowserTestUtils.loadURIString(
+    newWindow.gBrowser.selectedBrowser,
+    "about:about"
+  );
+  await BrowserTestUtils.browserLoaded(
+    newWindow.gBrowser.selectedBrowser,
+    false,
+    "about:about"
+  );
+
+  let event = createSimpleGestureEvent(
+    "MozSwipeGestureMayStart",
+    SimpleGestureEvent.DIRECTION_LEFT
+  );
+  newWindow.gGestureSupport._shouldDoSwipeGesture(event);
+
+  // Assuming we are on LTR environment.
+  is(
+    event.allowedDirections,
+    SimpleGestureEvent.DIRECTION_LEFT,
+    "Allows only swiping to left, i.e. backward"
+  );
+
+  event = createSimpleGestureEvent(
+    "MozSwipeGestureMayStart",
+    SimpleGestureEvent.DIRECTION_RIGHT
+  );
+  newWindow.gGestureSupport._shouldDoSwipeGesture(event);
+  is(
+    event.allowedDirections,
+    SimpleGestureEvent.DIRECTION_LEFT,
+    "Allows only swiping to left, i.e. backward"
+  );
+
+  await BrowserTestUtils.closeWindow(newWindow);
+});
+
+add_task(async () => {
+  await SpecialPowers.pushPrefEnv({
+    set: [["ui.swipeAnimationEnabled", true]],
+  });
+
+  // Open a new browser window and load two pages so that the browser can go
+  // back but can't go forward.
+  const newWindow = await BrowserTestUtils.openNewBrowserWindow({});
+
+  if (!newWindow.gHistorySwipeAnimation._isSupported()) {
+    await BrowserTestUtils.closeWindow(newWindow);
+    return;
+  }
+
+  function sendSwipeSequence(sendEnd) {
+    let event = createSimpleGestureEvent(
+      "MozSwipeGestureMayStart",
+      SimpleGestureEvent.DIRECTION_LEFT
+    );
+    newWindow.gGestureSupport.handleEvent(event);
+
+    event = createSimpleGestureEvent(
+      "MozSwipeGestureStart",
+      SimpleGestureEvent.DIRECTION_LEFT
+    );
+    newWindow.gGestureSupport.handleEvent(event);
+
+    event = createSimpleGestureEvent(
+      "MozSwipeGestureUpdate",
+      SimpleGestureEvent.DIRECTION_LEFT
+    );
+    newWindow.gGestureSupport.handleEvent(event);
+
+    event = createSimpleGestureEvent(
+      "MozSwipeGestureUpdate",
+      SimpleGestureEvent.DIRECTION_LEFT
+    );
+    newWindow.gGestureSupport.handleEvent(event);
+
+    if (sendEnd) {
+      sendSwipeEnd();
+    }
+  }
+  function sendSwipeEnd() {
+    let event = createSimpleGestureEvent(
+      "MozSwipeGestureEnd",
+      SimpleGestureEvent.DIRECTION_LEFT
+    );
+    newWindow.gGestureSupport.handleEvent(event);
+  }
+
+  // gHistroySwipeAnimation gets initialized in a requestIdleCallback so we need
+  // to wait for the initialization.
+  await TestUtils.waitForCondition(() => {
+    return (
+      // There's no explicit notification for the initialization, so we wait
+      // until `isLTR` matches the browser locale state.
+      newWindow.gHistorySwipeAnimation.isLTR != Services.locale.isAppLocaleRTL
+    );
+  });
+
+  BrowserTestUtils.loadURIString(
+    newWindow.gBrowser.selectedBrowser,
+    "about:mozilla"
+  );
+  await BrowserTestUtils.browserLoaded(
+    newWindow.gBrowser.selectedBrowser,
+    false,
+    "about:mozilla"
+  );
+  BrowserTestUtils.loadURIString(
+    newWindow.gBrowser.selectedBrowser,
+    "about:about"
+  );
+  await BrowserTestUtils.browserLoaded(
+    newWindow.gBrowser.selectedBrowser,
+    false,
+    "about:about"
+  );
+
+  // Start a swipe that's not enough to navigate
+  sendSwipeSequence(/* sendEnd = */ true);
+
+  // Wait two frames
+  await new Promise(r =>
+    window.requestAnimationFrame(() => window.requestAnimationFrame(r))
+  );
+
+  // The transition to fully stopped shouldn't have had enough time yet to
+  // become fully stopped.
+  ok(
+    newWindow.gHistorySwipeAnimation._isStoppingAnimation,
+    "should be stopping anim"
+  );
+
+  // Start another swipe.
+  sendSwipeSequence(/* sendEnd = */ false);
+
+  // Wait two frames
+  await new Promise(r =>
+    window.requestAnimationFrame(() => window.requestAnimationFrame(r))
+  );
+
+  // We should have started a new swipe, ie we shouldn't be stopping.
+  ok(
+    !newWindow.gHistorySwipeAnimation._isStoppingAnimation,
+    "should not be stopping anim"
+  );
+
+  sendSwipeEnd();
+
+  await BrowserTestUtils.closeWindow(newWindow);
+});