[#1651] Avoid testing with httpretty + Solr on Python 2.6

When running on Python 2.6, httpretty doesn't play nice with Solr (it
causes read timeouts). The tests are still run but we avoid using Solr,
either by using `use_cache`=False on `package_show` or disabling the
automatic indexing of datatasets when running on Python 2.6.

ckanext/datapusher/tests/test.py

@@ -47,11 +47,21 @@ def setup_class(cls):
         set_url_type(
             model.Package.get('annakarenina').resources, cls.sysadmin_user)
 
+        # Httpretty crashes with Solr on Python 2.6, disable the automatic
+        # Solr indexing
+        if (sys.version_info[0] == 2 and sys.version_info[1] == 6
+                and p.plugin_loaded('synchronous_search')):
+            p.unload('synchronous_search')
+
     @classmethod
     def teardown_class(cls):
         rebuild_all_dbs(cls.Session)
         p.unload('datastore')
         p.unload('datapusher')
+        # Reenable Solr indexing
+        if (sys.version_info[0] == 2 and sys.version_info[1] == 6
+                and not p.plugin_loaded('synchronous_search')):
+            p.load('synchronous_search')
 
     def test_create_ckan_resource_in_package(self):
         package = model.Package.get('annakarenina')

ckanext/resourceproxy/tests/test_proxy.py

@@ -1,3 +1,4 @@
+import sys
 import requests
 import unittest
 import json
@@ -27,7 +28,8 @@ def set_resource_url(url):
     context = {
         'model': model,
         'session': model.Session,
-        'user': model.User.get('testsysadmin').name
+        'user': model.User.get('testsysadmin').name,
+        'use_cache': False,
     }
 
     resource = p.toolkit.get_action('resource_show')(
@@ -55,12 +57,23 @@ def setup_class(cls):
         wsgiapp = middleware.make_app(config['global_conf'], **config)
         cls.app = paste.fixture.TestApp(wsgiapp)
         create_test_data.CreateTestData.create()
+        # Httpretty crashes with Solr on Python 2.6, disable the automatic
+        # Solr indexing
+        if (sys.version_info[0] == 2 and sys.version_info[1] == 6
+                and p.plugin_loaded('synchronous_search')):
+            p.unload('synchronous_search')
+
 
     @classmethod
     def teardown_class(cls):
         config.clear()
         config.update(cls._original_config)
         model.repo.rebuild_db()
+        # Reenable Solr indexing
+        if (sys.version_info[0] == 2 and sys.version_info[1] == 6
+                and not p.plugin_loaded('synchronous_search')):
+            p.load('synchronous_search')
+
 
     def setUp(self):
         self.url = 'http://www.ckan.org/static/example.json'