Bug 650965 - Test for removal of node using waitForAndContinue. r=mfinkle

mobile/chrome/tests/browser_addons.js

@@ -372,14 +372,15 @@ function installFromURLBar(aAddon) {
                     is(updateButton.disabled, false, "Update button is enabled");
 
                     ExtensionsView.uninstall(elt);
-                    setTimeout(function() {
-                      elt = get_addon_element(aAddon.id);
-                      ok(!elt || !elt.addon, "Addon element removed during uninstall");
-                      if (elt && !elt.addon)
-                        info("Element is still visible in search area");
+                    waitForAndContinue(function() {
+                      let elt = get_addon_element(aAddon.id);
+                      ok(!elt, "Addon element removed during uninstall");
                       Browser.closeTab(gCurrentTab);
                       close_manager(run_next_test);
-                    }, 0);
+                    }, function() {
+                      let elt = get_addon_element(aAddon.id);
+                      return !elt;
+                    });
                   } else {
                     ok(!elt, "Extension not in list");
                     AddonManager.getAllInstalls(function(aInstalls) {

mobile/chrome/tests/head.js

@@ -2,6 +2,7 @@
   Common Helpers functions
 =============================================================================*/
 
+const kDefaultWait = 2000;
 // Wait for a condition and call a supplied callback if condition is met within
 // alloted time. If condition is not met, cause a hard failure, stopping the test.
 function waitFor(callback, test, timeout) {
@@ -11,7 +12,7 @@ function waitFor(callback, test, timeout) {
   }
 
   timeout = timeout || Date.now();
-  if (Date.now() - timeout > 1000)
+  if (Date.now() - timeout > kDefaultWait)
     throw "waitFor timeout";
   setTimeout(waitFor, 50, callback, test, timeout);
 };
@@ -26,7 +27,7 @@ function waitForAndContinue(callback, test, timeout) {
   }
 
   timeout = timeout || Date.now();
-  if (Date.now() - timeout > 1000) {
+  if (Date.now() - timeout > kDefaultWait) {
     callback();
     return;
   }