[tests] fix warnings about deprecated or bad test code

Author: pawelmhm

tests/test_crawl_manager.py

@@ -334,7 +334,7 @@ def setUp(self):
 
     def test_return_items(self):
         result = self.crawl_manager.return_items(None)
-        self.assertDictContainsSubset(self.expected_result, result)
+        self.assertEqual(dict(result, **self.expected_result), result)
         self.assertEqual(list(sorted(self.stats.keys())), list(result['stats'].keys()))
         # debug = True by default
         self.assertIn('errors', result)

tests/test_resource_realtimeapi.py

@@ -9,7 +9,7 @@
 from scrapyrt.resources import RealtimeApi, ServiceResource, CrawlResource
 
 
-class TestResource(ServiceResource):
+class SampleResource(ServiceResource):
     isLeaf = True
     allowedMethods = ['GET', 'POST']
 
@@ -35,10 +35,10 @@ def test_realtimeapi_with_default_settings(self):
     @patch('scrapyrt.resources.settings', deepcopy(settings))
     def test_realtimeapi_with_custom_settings(self):
         from scrapyrt.resources import settings
-        settings.RESOURCES[b'test.json'] = self._get_class_path('TestResource')
+        settings.RESOURCES[b'test.json'] = self._get_class_path('SampleResource')
         expected_entities = {
             b'crawl.json': CrawlResource,
-            b'test.json': TestResource
+            b'test.json': SampleResource
         }
         service_root = RealtimeApi()
         self._check_entities(service_root, expected_entities)