Add note to BotoStore docs pointing to GCStore (Python3)

Author: siboehm

docs/boto.rst

@@ -9,6 +9,11 @@ Storage <http://code.google.com/apis/storage/>`_. This is achieved by providing
 a backend that utilizes `boto <http://boto.cloudhackers.com/>`_ (preferably >=
 2.25).
 
+``boto`` doesn't support using Google Storage with Python3. For this
+reason simplekv has a separate Google Storage implementation for Python3 at
+:class:`~simplekv.net.gcstore.GoogleCloudStore` which uses Google's
+``google-cloud-storage`` library.
+
 Note that boto is not a dependency for simplekv. You need to install it
 manually, otherwise you will see an :exc:`~exceptions.ImportError`.
 

tests/test_gcloud_store.py

@@ -39,7 +39,6 @@ def gc_credentials():
         # at https://storage.googleapis.com
         os.environ["STORAGE_EMULATOR_HOST"] = emulator_endpoint
         credentials = AnonymousCredentials()
-    # if no endpoint was defined we're running against actual GC and need credentials
     else:
         # if no endpoint was defined we're running against actual GC and need credentials
         credentials = credentials_path
@@ -125,6 +124,8 @@ def test_gcstore_pickling_attrs():
 class TestExtendedKeysGCStore(TestGoogleCloudStore, ExtendedKeyspaceTests):
     @pytest.fixture(scope="class")
     def dirty_store(self, gc_credentials):
+        # This overwrites the module-level fixture and returns an ExtendedKeysStore
+        # instead of the regular one
         uuid = str(uuid4())
         # if we have a credentials.json that specifies the project name, else we pick one
         if type(gc_credentials) == AnonymousCredentials: