browser chrome test for the all-tabs panel

browser/base/content/browser-tabPreviews.js

@@ -576,7 +576,7 @@ var allTabs = {
     if (this._initiated)
       return;
     this._initiated = true;
-	
+
     Array.forEach(gBrowser.mTabs, function (tab) {
       this._addPreview(tab);
     }, this);

browser/base/content/test/Makefile.in

@@ -82,6 +82,7 @@ _TEST_FILES = \
 
 _BROWSER_FILES = \
                  browser_NetworkPrioritizer.js \
+                 browser_allTabsPanel.js \
                  browser_alltabslistener.js \
                  browser_bug304198.js \
                  browser_bug321000.js \

browser/base/content/test/browser_allTabsPanel.js

@@ -0,0 +1,154 @@
+function test() {
+  waitForExplicitFinish();
+  allTabs.init();
+  nextSequence();
+}
+
+var sequences = 3;
+var chars = "ABCDEFGHI";
+var closedTabs;
+var history;
+var steps;
+var whenOpen = [
+  startSearch,
+  clearSearch, clearSearch,
+  closeTab,
+  moveTab,
+  closePanel,
+];
+var whenClosed = [
+  openPanel, openPanel, openPanel, openPanel, openPanel, openPanel,
+  closeTab, closeTab, closeTab,
+  moveTab, moveTab, moveTab,
+  selectTab, selectTab,
+  undoCloseTab,
+  openTab,
+];
+
+function rand(min, max) {
+  return min + Math.floor(Math.random() * (max - min + 1));
+}
+function pickOne(array) {
+  return array[rand(0, array.length - 1)];
+}
+function pickOneTab() {
+  var tab = pickOne(gBrowser.tabContainer.childNodes);
+  return [tab, Array.indexOf(gBrowser.tabContainer.childNodes, tab)];
+}
+function nextSequence() {
+  while (gBrowser.browsers.length > 1)
+    gBrowser.removeCurrentTab();
+  if (sequences-- <= 0) {
+    allTabs.close();
+    gBrowser.addTab();
+    gBrowser.removeCurrentTab();
+    finish();
+    return;
+  }
+  closedTabs = 0;
+  steps = rand(10, 20);
+  var initialTabs = "";
+  while (gBrowser.browsers.length < rand(3, 20)) {
+    let tabChar = pickOne(chars);
+    initialTabs += tabChar;
+    gBrowser.addTab("data:text/plain," + tabChar);
+  }
+  history = [initialTabs];
+  gBrowser.removeCurrentTab();
+  next();
+}
+function next() {
+  executeSoon(function () {
+    is(allTabs.previews.length, gBrowser.browsers.length,
+       history.join(", "));
+    if (steps-- <= 0) {
+      nextSequence();
+      return;
+    }
+    var step;
+    var rv;
+    do {
+      step = pickOne(allTabs.isOpen ? whenOpen : whenClosed);
+      rv = step();
+    } while (rv === false);
+    history.push(step.name + (rv !== true && rv !== undefined ? " " + rv : ""));
+  });
+}
+
+function openPanel() {
+  if (allTabs.isOpen)
+    return false;
+  allTabs.panel.addEventListener("popupshown", function () {
+    allTabs.panel.removeEventListener("popupshown", arguments.callee, false);
+    next();
+  }, false);
+  allTabs.open();
+  return true;
+}
+
+function closePanel() {
+  allTabs.panel.addEventListener("popuphidden", function () {
+    allTabs.panel.removeEventListener("popuphidden", arguments.callee, false);
+    next();
+  }, false);
+  allTabs.close();
+}
+
+function closeTab() {
+  if (gBrowser.browsers.length == 1)
+    return false;
+  var [tab, index] = pickOneTab();
+  gBrowser.removeTab(tab);
+  closedTabs++;
+  next();
+  return index;
+}
+
+function startSearch() {
+  allTabs.filterField.value = pickOne(chars);
+  allTabs.filter();
+  next();
+  return allTabs.filterField.value;
+}
+
+function clearSearch() {
+  if (!allTabs.filterField.value)
+    return false;
+  allTabs.filterField.value = "";
+  allTabs.filter();
+  next();
+  return true;
+}
+
+function undoCloseTab() {
+  if (!closedTabs)
+    return false;
+  window.undoCloseTab(0);
+  closedTabs--;
+  next();
+  return true;
+}
+
+function selectTab() {
+  var [tab, index] = pickOneTab();
+  gBrowser.selectedTab = tab;
+  next();
+  return index;
+}
+
+function openTab() {
+  BrowserOpenTab();
+  next();
+}
+
+function moveTab() {
+  if (gBrowser.browsers.length == 1)
+    return false;
+  var currentIndex = rand(0, gBrowser.browsers.length - 1);
+  do {
+    var newIndex = rand(0, gBrowser.browsers.length - 1);
+  } while (newIndex == currentIndex);
+  gBrowser.moveTabTo(gBrowser.tabContainer.childNodes[currentIndex], newIndex);
+  next();
+  return currentIndex + "->" + newIndex;
+}