1 files changed, 257 insertions, 0 deletions
diff --git a/browser/base/content/test/general/browser_tab_dragdrop.js b/browser/base/content/test/general/browser_tab_dragdrop.js
new file mode 100644
index 0000000000..9ea05842f2
--- /dev/null
+++ b/browser/base/content/test/general/browser_tab_dragdrop.js
@@ -0,0 +1,257 @@
+// Swaps the content of tab a into tab b and then closes tab a.
+function swapTabsAndCloseOther(a, b) {
+  gBrowser.swapBrowsersAndCloseOther(gBrowser.tabs[b], gBrowser.tabs[a]);
+}
+
+// Mirrors the effect of the above function on an array.
+function swapArrayContentsAndRemoveOther(arr, a, b) {
+  arr[b] = arr[a];
+  arr.splice(a, 1);
+}
+
+function checkBrowserIds(expected) {
+  is(
+    gBrowser.tabs.length,
+    expected.length,
+    "Should have the right number of tabs."
+  );
+
+  for (let [i, tab] of gBrowser.tabs.entries()) {
+    is(
+      tab.linkedBrowser.browserId,
+      expected[i],
+      `Tab ${i} should have the right browser ID.`
+    );
+    is(
+      tab.linkedBrowser.browserId,
+      tab.linkedBrowser.browsingContext.browserId,
+      `Browser for tab ${i} has the same browserId as its BrowsingContext`
+    );
+  }
+}
+
+var getClicks = function (tab) {
+  return SpecialPowers.spawn(tab.linkedBrowser, [], function () {
+    return content.wrappedJSObject.clicks;
+  });
+};
+
+var clickTest = async function (tab) {
+  let clicks = await getClicks(tab);
+
+  await SpecialPowers.spawn(tab.linkedBrowser, [], function () {
+    let target = content.document.body;
+    let rect = target.getBoundingClientRect();
+    let left = (rect.left + rect.right) / 2;
+    let top = (rect.top + rect.bottom) / 2;
+
+    let utils = content.windowUtils;
+    utils.sendMouseEvent("mousedown", left, top, 0, 1, 0, false, 0, 0);
+    utils.sendMouseEvent("mouseup", left, top, 0, 1, 0, false, 0, 0);
+  });
+
+  let newClicks = await getClicks(tab);
+  is(newClicks, clicks + 1, "adding 1 more click on BODY");
+};
+
+function loadURI(tab, url) {
+  BrowserTestUtils.loadURIString(tab.linkedBrowser, url);
+  return BrowserTestUtils.browserLoaded(tab.linkedBrowser);
+}
+
+// Creates a framescript which caches the current object value from the plugin
+// in the page. checkObjectValue below verifies that the framescript is still
+// active for the browser and that the cached value matches that from the plugin
+// in the page which tells us the plugin hasn't been reinitialized.
+async function cacheObjectValue(browser) {
+  await SpecialPowers.spawn(browser, [], () => {
+    let plugin = content.document.getElementById("p").wrappedJSObject;
+    info(`plugin is ${plugin}`);
+    let win = content.document.defaultView;
+    info(`win is ${win}`);
+    win.objectValue = plugin.getObjectValue();
+    info(`got objectValue: ${win.objectValue}`);
+  });
+}
+
+// Note, can't run this via registerCleanupFunction because it needs the
+// browser to still be alive and have a messageManager.
+async function cleanupObjectValue(browser) {
+  info("entered cleanupObjectValue");
+  await SpecialPowers.spawn(browser, [], () => {
+    info("in cleanup function");
+    let win = content.document.defaultView;
+    info(`about to delete objectValue: ${win.objectValue}`);
+    delete win.objectValue;
+  });
+  info("exiting cleanupObjectValue");
+}
+
+// See the notes for cacheObjectValue above.
+async function checkObjectValue(browser) {
+  let data = await SpecialPowers.spawn(browser, [], () => {
+    let plugin = content.document.getElementById("p").wrappedJSObject;
+    let win = content.document.defaultView;
+    let result, exception;
+    try {
+      result = plugin.checkObjectValue(win.objectValue);
+    } catch (e) {
+      exception = e.toString();
+    }
+    return {
+      result,
+      exception,
+    };
+  });
+
+  if (data.result === null) {
+    ok(false, "checkObjectValue threw an exception: " + data.exception);
+    throw new Error(data.exception);
+  } else {
+    return data.result;
+  }
+}
+
+add_task(async function () {
+  // create a few tabs
+  let tabs = [
+    gBrowser.tabs[0],
+    BrowserTestUtils.addTab(gBrowser, "about:blank", { skipAnimation: true }),
+    BrowserTestUtils.addTab(gBrowser, "about:blank", { skipAnimation: true }),
+    BrowserTestUtils.addTab(gBrowser, "about:blank", { skipAnimation: true }),
+    BrowserTestUtils.addTab(gBrowser, "about:blank", { skipAnimation: true }),
+  ];
+
+  // Initially 0 1 2 3 4
+  await loadURI(
+    tabs[1],
+    "data:text/html;charset=utf-8,<title>tab1</title><body>tab1<iframe>"
+  );
+  await loadURI(tabs[2], "data:text/plain;charset=utf-8,tab2");
+  await loadURI(
+    tabs[3],
+    "data:text/html;charset=utf-8,<title>tab3</title><body>tab3<iframe>"
+  );
+  await loadURI(
+    tabs[4],
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example.com/browser/browser/base/content/test/general/browser_tab_dragdrop_embed.html"
+  );
+  await BrowserTestUtils.switchTab(gBrowser, tabs[3]);
+
+  let browserIds = tabs.map(t => t.linkedBrowser.browserId);
+  checkBrowserIds(browserIds);
+
+  is(gBrowser.tabs[1], tabs[1], "tab1");
+  is(gBrowser.tabs[2], tabs[2], "tab2");
+  is(gBrowser.tabs[3], tabs[3], "tab3");
+  is(gBrowser.tabs[4], tabs[4], "tab4");
+
+  swapTabsAndCloseOther(2, 3); // now: 0 1 2 4
+  // Tab 2 is gone (what was tab 3 is displaying its content).
+  tabs.splice(2, 1);
+  swapArrayContentsAndRemoveOther(browserIds, 2, 3);
+
+  is(gBrowser.tabs[1], tabs[1], "tab1");
+  is(gBrowser.tabs[2], tabs[2], "tab2");
+  is(gBrowser.tabs[3], tabs[3], "tab4");
+
+  checkBrowserIds(browserIds);
+
+  info("about to cacheObjectValue");
+  await cacheObjectValue(tabs[3].linkedBrowser);
+  info("just finished cacheObjectValue");
+
+  swapTabsAndCloseOther(3, 2); // now: 0 1 4
+  tabs.splice(3, 1);
+  swapArrayContentsAndRemoveOther(browserIds, 3, 2);
+
+  is(
+    Array.prototype.indexOf.call(gBrowser.tabs, gBrowser.selectedTab),
+    2,
+    "The third tab should be selected"
+  );
+
+  checkBrowserIds(browserIds);
+
+  ok(
+    await checkObjectValue(gBrowser.tabs[2].linkedBrowser),
+    "same plugin instance"
+  );
+
+  is(gBrowser.tabs[1], tabs[1], "tab1");
+  is(gBrowser.tabs[2], tabs[2], "tab4");
+
+  let clicks = await getClicks(gBrowser.tabs[2]);
+  is(clicks, 0, "no click on BODY so far");
+  await clickTest(gBrowser.tabs[2]);
+
+  swapTabsAndCloseOther(2, 1); // now: 0 4
+  tabs.splice(2, 1);
+  swapArrayContentsAndRemoveOther(browserIds, 2, 1);
+
+  is(gBrowser.tabs[1], tabs[1], "tab4");
+
+  checkBrowserIds(browserIds);
+
+  ok(
+    await checkObjectValue(gBrowser.tabs[1].linkedBrowser),
+    "same plugin instance"
+  );
+  await cleanupObjectValue(gBrowser.tabs[1].linkedBrowser);
+
+  await clickTest(gBrowser.tabs[1]);
+
+  // Load a new document (about:blank) in tab4, then detach that tab into a new window.
+  // In the new window, navigate back to the original document and click on its <body>,
+  // verify that its onclick was called.
+  is(
+    Array.prototype.indexOf.call(gBrowser.tabs, gBrowser.selectedTab),
+    1,
+    "The second tab should be selected"
+  );
+  is(
+    gBrowser.tabs[1],
+    tabs[1],
+    "The second tab in gBrowser.tabs should be equal to the second tab in our array"
+  );
+  is(
+    gBrowser.selectedTab,
+    tabs[1],
+    "The second tab in our array is the selected tab"
+  );
+  await loadURI(tabs[1], "about:blank");
+  let key = tabs[1].linkedBrowser.permanentKey;
+
+  checkBrowserIds(browserIds);
+
+  let win = gBrowser.replaceTabWithWindow(tabs[1]);
+  await new Promise(resolve => whenDelayedStartupFinished(win, resolve));
+
+  let newWinBrowserId = browserIds[1];
+  browserIds.splice(1, 1);
+  checkBrowserIds(browserIds);
+
+  // Verify that the original window now only has the initial tab left in it.
+  is(gBrowser.tabs[0], tabs[0], "tab0");
+  is(gBrowser.tabs[0].linkedBrowser.currentURI.spec, "about:blank", "tab0 uri");
+
+  let tab = win.gBrowser.tabs[0];
+  is(tab.linkedBrowser.permanentKey, key, "Should have kept the key");
+  is(tab.linkedBrowser.browserId, newWinBrowserId, "Should have kept the ID");
+  is(
+    tab.linkedBrowser.browserId,
+    tab.linkedBrowser.browsingContext.browserId,
+    "Should have kept the ID"
+  );
+
+  let awaitPageShow = BrowserTestUtils.waitForContentEvent(
+    tab.linkedBrowser,
+    "pageshow"
+  );
+  win.gBrowser.goBack();
+  await awaitPageShow;
+
+  await clickTest(tab);
+  promiseWindowClosed(win);
+});