Refs #4878, add another test.

tests/PHPUnit/Integration/BackwardsCompatibility1XTest.php

@@ -108,7 +108,10 @@ class Test_Piwik_Integration_BackwardsCompatibility1XTest extends IntegrationTes
                                               'disableArchiving' => false)),
 
             array('VisitFrequency.get', array('idSite' => $idSite, 'date' => '2012-03-06,2012-12-31',
-                                              'periods' => array('range'), 'disableArchiving' => true))
+                                              'periods' => array('range'), 'disableArchiving' => true)),
+
+            array('VisitFrequency.get', array('idSite' => $idSite, 'date' => '2012-03-03,2012-12-12', 'periods' => array('month'),
+                                              'testSuffix' => '_multipleOldNew', 'disableArchiving' => true))
         );
     }
 }

tests/PHPUnit/Integration/expected/test_BackwardsCompatibility1XTest_multipleOldNew__VisitFrequency.get_month.xml

+<?xml version="1.0" encoding="utf-8" ?>
+<results>
+	<result date="2012-03">
+		<nb_uniq_visitors_returning>0</nb_uniq_visitors_returning>
+		<nb_visits_returning>1</nb_visits_returning>
+		<nb_actions_returning>1</nb_actions_returning>
+		<nb_visits_converted_returning>1</nb_visits_converted_returning>
+		<bounce_count_returning>1</bounce_count_returning>
+		<sum_visit_length_returning>0</sum_visit_length_returning>
+		<max_actions_returning>1</max_actions_returning>
+		<bounce_rate_returning>100%</bounce_rate_returning>
+		<nb_actions_per_visit_returning>1</nb_actions_per_visit_returning>
+		<avg_time_on_site_returning>0</avg_time_on_site_returning>
+	</result>
+	<result date="2012-04" />
+	<result date="2012-05" />
+	<result date="2012-06" />
+	<result date="2012-07" />
+	<result date="2012-08" />
+	<result date="2012-09" />
+	<result date="2012-10" />
+	<result date="2012-11" />
+	<result date="2012-12">
+		<nb_uniq_visitors_returning>1</nb_uniq_visitors_returning>
+		<nb_visits_returning>1</nb_visits_returning>
+		<nb_actions_returning>1</nb_actions_returning>
+		<nb_visits_converted_returning>0</nb_visits_converted_returning>
+		<bounce_count_returning>1</bounce_count_returning>
+		<sum_visit_length_returning>0</sum_visit_length_returning>
+		<max_actions_returning>1</max_actions_returning>
+		<bounce_rate_returning>100%</bounce_rate_returning>
+		<nb_actions_per_visit_returning>1</nb_actions_per_visit_returning>
+		<avg_time_on_site_returning>0</avg_time_on_site_returning>
+	</result>
+</results>
\ No newline at end of file