public function testget_notification_recipients() { $call = new Call(); //test without setting any user list $result = $call->get_notification_recipients(); $this->assertTrue(is_array($result)); //test with a user in notofication list set $call->users_arr = array(1); $result = $call->get_notification_recipients(); $this->assertTrue(is_array($result)); $this->assertEquals(1, count($result)); }