1 files changed, 65 insertions, 0 deletions
diff --git a/dom/events/test/browser_dragimage.js b/dom/events/test/browser_dragimage.js
new file mode 100644
index 0000000000..503c0ac449
--- /dev/null
+++ b/dom/events/test/browser_dragimage.js
@@ -0,0 +1,65 @@
+const TEST_URI = "dragimage.html";
+
+// This test checks that dragging an image onto the same document
+// does not drop it, even when the page cancels the dragover event.
+add_task(async function dragimage_remote_tab() {
+  var tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "http://www.example.com/browser/dom/events/test/" + TEST_URI
+  );
+
+  let dropHappened = false;
+  let oldHandler = tab.linkedBrowser.droppedLinkHandler;
+  tab.linkedBrowser.droppedLinkHandler = () => {
+    dropHappened = true;
+  };
+
+  await SpecialPowers.spawn(tab.linkedBrowser, [], async () => {
+    let image = content.document.body.firstElementChild;
+    let target = content.document.body.lastElementChild;
+
+    await EventUtils.synthesizePlainDragAndDrop({
+      srcElement: image,
+      destElement: target,
+      srcWindow: content,
+      destWindow: content,
+      id: content.windowUtils.DEFAULT_MOUSE_POINTER_ID,
+    });
+  });
+
+  tab.linkedBrowser.droppedLinkHandler = oldHandler;
+
+  ok(!dropHappened, "drop did not occur");
+
+  BrowserTestUtils.removeTab(tab);
+});
+
+// This test checks the same but with an in-process page.
+add_task(async function dragimage_local_tab() {
+  var tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    getRootDirectory(gTestPath) + TEST_URI
+  );
+
+  let dropHappened = false;
+  let oldHandler = tab.linkedBrowser.droppedLinkHandler;
+  tab.linkedBrowser.droppedLinkHandler = () => {
+    dropHappened = true;
+  };
+
+  let image = tab.linkedBrowser.contentDocument.body.firstElementChild;
+  let target = tab.linkedBrowser.contentDocument.body.lastElementChild;
+
+  await EventUtils.synthesizePlainDragAndDrop({
+    srcElement: image,
+    destElement: target,
+    srcWindow: tab.linkedBrowser.contentWindow,
+    destWindow: tab.linkedBrowser.contentWindow,
+  });
+
+  tab.linkedBrowser.droppedLinkHandler = oldHandler;
+
+  ok(!dropHappened, "drop did not occur");
+
+  BrowserTestUtils.removeTab(tab);
+});