Bug 802742 - Marionette should list all failed tests at the end of the testrun, r=mdas

testing/marionette/client/marionette/runtests.py

@@ -426,6 +426,12 @@ class MarionetteTestRunner(object):
         self.logger.info('passed: %d' % self.passed)
         self.logger.info('failed: %d' % self.failed)
         self.logger.info('todo: %d' % self.todo)
+
+        if self.failed > 0:
+            self.logger.info('\nFAILED TESTS\n-------')
+            for failed_test in self.failures:
+                self.logger.info('%s' % failed_test[0])
+
         try:
             self.marionette.check_for_crash()
         except: