Bug 1411913 - Enable Marionette trace log for mochitest/reftest by default. r=jmaher

MozReview-Commit-ID: 1cGy3YlJml1

--HG--
extra : rebase_source : 23106578640a64848c164121a96cdddebd13cad8

layout/tools/reftest/runreftest.py

@@ -327,6 +327,10 @@ class RefTest(object):
             port = options.marionette.split(':')[1]
             prefs['marionette.defaultPrefs.port'] = int(port)
 
+            # Enable tracing output for detailed failures in case of
+            # failing connection attempts, and hangs (bug 1397201)
+            prefs['marionette.logging'] = "TRACE"
+
         preference_file = os.path.join(here, 'reftest-preferences.js')
         prefs.update(mozprofile.Preferences.read_prefs(preference_file))
 

testing/mochitest/runtests.py

@@ -1805,6 +1805,12 @@ toolbar#nav-bar {
             "idle.lastDailyNotification=%d" %
             int(time.time()))
 
+        # Enable tracing output for detailed failures in case of
+        # failing connection attempts, and hangs (bug 1397201)
+        options.extraPrefs.append(
+            "marionette.logging=%s" %
+            "TRACE")
+
         # get extensions to install
         extensions = self.getExtensionsToInstall(options)