Bug 890409 - Re-enable browser_aboutHome.js but ignoring uncaught exceptions.

r=ttaubert

browser/base/content/test/Makefile.in

@@ -51,7 +51,6 @@ endif
 # The following tests are disabled because they are unreliable:
 #   browser_bug423833.js is bug 428712
 #   browser_sanitize-download-history.js is bug 432425
-#   browser_aboutHome.js is bug 890409
 #
 # browser_sanitizeDialog_treeView.js is disabled until the tree view is added
 # back to the clear recent history dialog (sanitize.xul), if it ever is (bug
@@ -72,6 +71,7 @@ MOCHITEST_BROWSER_FILES = \
                  blockPluginVulnerableNoUpdate.xml \
                  blockPluginVulnerableUpdatable.xml \
                  browser_aboutHealthReport.js \
+                 browser_aboutHome.js \
                  browser_aboutSyncProgress.js \
                  browser_addKeywordSearch.js \
                  browser_addon_bar_aomlistener.js \

browser/base/content/test/browser_aboutHome.js

@@ -104,23 +104,23 @@ let gTests = [
     let numSearchesBefore = 0;
     let deferred = Promise.defer();
     let doc = gBrowser.contentDocument;
+    let engineName = doc.documentElement.getAttribute("searchEngineName");
 
     // We rely on the listener in browser.js being installed and fired before
     // this one. If this ever changes, we should add an executeSoon() or similar.
     doc.addEventListener("AboutHomeSearchEvent", function onSearch(e) {
-      let engineName = doc.documentElement.getAttribute("searchEngineName");
       is(e.detail, engineName, "Detail is search engine name");
 
       gBrowser.stop();
 
-      getNumberOfSearches().then(num => {
+      getNumberOfSearches(engineName).then(num => {
         is(num, numSearchesBefore + 1, "One more search recorded.");
         deferred.resolve();
       });
     }, true, true);
 
     // Get the current number of recorded searches.
-    getNumberOfSearches().then(num => {
+    getNumberOfSearches(engineName).then(num => {
       numSearchesBefore = num;
 
       info("Perform a search.");
@@ -263,6 +263,7 @@ function test()
 {
   waitForExplicitFinish();
   requestLongerTimeout(2);
+  ignoreAllUncaughtExceptions();
 
   Task.spawn(function () {
     for (let test of gTests) {
@@ -394,9 +395,12 @@ function promiseBrowserAttributes(aTab)
 /**
  * Retrieves the number of about:home searches recorded for the current day.
  *
+ * @param aEngineName
+ *        name of the setup search engine.
+ *
  * @return {Promise} Returns a promise resolving to the number of searches.
  */
-function getNumberOfSearches() {
+function getNumberOfSearches(aEngineName) {
   let reporter = Components.classes["@mozilla.org/datareporting/service;1"]
                                    .getService()
                                    .wrappedJSObject
@@ -419,17 +423,15 @@ function getNumberOfSearches() {
       // different days. Tests are always run with an empty profile so there
       // are no searches from yesterday, normally. Should the test happen to run
       // past midnight we make sure to count them in as well.
-      return getNumberOfSearchesByDate(data, now) +
+      return getNumberOfSearchesByDate(aEngineName, data, now) +
-             getNumberOfSearchesByDate(data, yday);
+             getNumberOfSearchesByDate(aEngineName, data, yday);
     });
   });
 }
 
-function getNumberOfSearchesByDate(aData, aDate) {
+function getNumberOfSearchesByDate(aEngineName, aData, aDate) {
   if (aData.days.hasDay(aDate)) {
-    let doc = gBrowser.contentDocument;
+    let id = Services.search.getEngineByName(aEngineName).identifier;
-    let engineName = doc.documentElement.getAttribute("searchEngineName");
-    let id = Services.search.getEngineByName(engineName).identifier;
 
     let day = aData.days.getDay(aDate);
     let field = id + ".abouthome";