1 files changed, 158 insertions, 0 deletions
diff --git a/layout/xul/test/browser_bug706743.js b/layout/xul/test/browser_bug706743.js
new file mode 100644
index 0000000000..c28721e831
--- /dev/null
+++ b/layout/xul/test/browser_bug706743.js
@@ -0,0 +1,158 @@
+add_task(async function () {
+  const url =
+    "data:text/html,<html><head></head><body>" +
+    '<a id="target" href="about:blank" title="This is tooltip text" ' +
+    'style="display:block;height:20px;margin:10px;" ' +
+    'onclick="return false;">here is an anchor element</a></body></html>';
+
+  let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, url);
+  let browser = gBrowser.selectedBrowser;
+
+  await new Promise(resolve => {
+    SpecialPowers.pushPrefEnv({ set: [["ui.tooltipDelay", 0]] }, resolve);
+  });
+
+  // Send a mousemove at a known position to start the test.
+  await BrowserTestUtils.synthesizeMouse(
+    "#target",
+    -5,
+    -5,
+    { type: "mousemove" },
+    browser
+  );
+
+  // show tooltip by mousemove into target.
+  let popupShownPromise = BrowserTestUtils.waitForEvent(document, "popupshown");
+  await BrowserTestUtils.synthesizeMouse(
+    "#target",
+    5,
+    15,
+    { type: "mousemove" },
+    browser
+  );
+  await popupShownPromise;
+
+  // hide tooltip by mousemove to outside.
+  let popupHiddenPromise = BrowserTestUtils.waitForEvent(
+    document,
+    "popuphidden"
+  );
+  await BrowserTestUtils.synthesizeMouse(
+    "#target",
+    -5,
+    15,
+    { type: "mousemove" },
+    browser
+  );
+  await popupHiddenPromise;
+
+  // mousemove into the target and start drag by emulation via nsIDragService.
+  // Note that on some platforms, we cannot actually start the drag by
+  // synthesized events.  E.g., Windows waits an actual mousemove event after
+  // dragstart.
+
+  // Emulate a buggy mousemove event.  widget might dispatch mousemove event
+  // during drag.
+
+  function tooltipNotExpected() {
+    ok(false, "tooltip is shown during drag");
+  }
+  addEventListener("popupshown", tooltipNotExpected, true);
+
+  let dragService = Cc["@mozilla.org/widget/dragservice;1"].getService(
+    Ci.nsIDragService
+  );
+  dragService.startDragSessionForTests(
+    Ci.nsIDragService.DRAGDROP_ACTION_MOVE |
+      Ci.nsIDragService.DRAGDROP_ACTION_COPY |
+      Ci.nsIDragService.DRAGDROP_ACTION_LINK
+  );
+  try {
+    await BrowserTestUtils.synthesizeMouse(
+      "#target",
+      5,
+      15,
+      { type: "mousemove" },
+      browser
+    );
+
+    // eslint-disable-next-line mozilla/no-arbitrary-setTimeout
+    await new Promise(resolve => setTimeout(resolve, 100));
+  } finally {
+    removeEventListener("popupshown", tooltipNotExpected, true);
+    dragService.endDragSession(true);
+  }
+
+  await BrowserTestUtils.synthesizeMouse(
+    "#target",
+    -5,
+    -5,
+    { type: "mousemove" },
+    browser
+  );
+
+  // If tooltip listener used a flag for managing D&D state, we would need
+  // to test if the tooltip is shown after drag.
+
+  // show tooltip by mousemove into target.
+  popupShownPromise = BrowserTestUtils.waitForEvent(document, "popupshown");
+  await BrowserTestUtils.synthesizeMouse(
+    "#target",
+    5,
+    15,
+    { type: "mousemove" },
+    browser
+  );
+  await popupShownPromise;
+
+  // hide tooltip by mousemove to outside.
+  popupHiddenPromise = BrowserTestUtils.waitForEvent(document, "popuphidden");
+  await BrowserTestUtils.synthesizeMouse(
+    "#target",
+    -5,
+    15,
+    { type: "mousemove" },
+    browser
+  );
+  await popupHiddenPromise;
+
+  // Show tooltip after mousedown
+  popupShownPromise = BrowserTestUtils.waitForEvent(document, "popupshown");
+  await BrowserTestUtils.synthesizeMouse(
+    "#target",
+    5,
+    15,
+    { type: "mousemove" },
+    browser
+  );
+  await popupShownPromise;
+
+  popupHiddenPromise = BrowserTestUtils.waitForEvent(document, "popuphidden");
+  await BrowserTestUtils.synthesizeMouse(
+    "#target",
+    5,
+    15,
+    { type: "mousedown" },
+    browser
+  );
+  await popupHiddenPromise;
+
+  await BrowserTestUtils.synthesizeMouse(
+    "#target",
+    5,
+    15,
+    { type: "mouseup" },
+    browser
+  );
+  await BrowserTestUtils.synthesizeMouse(
+    "#target",
+    -5,
+    15,
+    { type: "mousemove" },
+    browser
+  );
+
+  ok(true, "tooltips appear properly");
+
+  gBrowser.removeCurrentTab();
+});