enable test_stats and test_utils_log tests in Python 3

scrapy/statscollectors.py

@@ -50,6 +50,7 @@ class StatsCollector(object):
     def _persist_stats(self, stats, spider):
         pass
 
+
 class MemoryStatsCollector(StatsCollector):
 
     def __init__(self, crawler):

tests/py3-ignores.txt

@@ -30,9 +30,7 @@ tests/test_spidermiddleware_httperror.py
 tests/test_spidermiddleware_offsite.py
 tests/test_spidermiddleware_referer.py
 tests/test_spider.py
-tests/test_stats.py
 tests/test_utils_iterators.py
-tests/test_utils_log.py
 tests/test_utils_template.py
 tests/test_webclient.py
 

tests/test_stats.py

@@ -4,6 +4,7 @@ from scrapy.spiders import Spider
 from scrapy.statscollectors import StatsCollector, DummyStatsCollector
 from scrapy.utils.test import get_crawler
 
+
 class StatsCollectorTest(unittest.TestCase):
 
     def setUp(self):
@@ -50,6 +51,3 @@ class StatsCollectorTest(unittest.TestCase):
         stats.set_value('test', 'value', spider=self.spider)
         self.assertEqual(stats.get_stats(), {})
         self.assertEqual(stats.get_stats('a'), {})
-
-if __name__ == "__main__":
-    unittest.main()