Merge branch 'gmerge' into gmaster

# Conflicts:
#	cellxgene_gateway/backend_cache.py
#	cellxgene_gateway/cache_entry.py
#	cellxgene_gateway/env.py
#	cellxgene_gateway/gateway.py
#	cellxgene_gateway/subprocess_backend.py
#	tests/test_cache_entry.py
#	tests/test_dir_util.py

tests/test_cache_entry.py

@@ -1,11 +1,15 @@
 import unittest
-from cellxgene_gateway.cache_entry import CacheEntry
+from cellxgene_gateway.cache_entry import CacheEntry, CacheEntryStatus
 from cellxgene_gateway.cache_key import CacheKey
 
 key = CacheKey("czi/pbmc3k.h5ad", "pbmc3k.h5ad", "tmp.csv")
 
 
 class TestRenderEntry(unittest.TestCase):
+    def test_GIVEN_key_and_port_THEN_returns_loading_CacheEntry(self):
+        entry = CacheEntry.for_key("some-key", 1)
+        self.assertEqual(entry.status, CacheEntryStatus.loading)
+
     def test_GIVEN_absolute_static_url_THEN_include_path(self):
         actual = CacheEntry.for_key(key, 8000).rewrite_text_content(
             "src:url(/static/assets/"
@@ -21,3 +25,7 @@ class TestRenderEntry(unittest.TestCase):
         )
         expected = '<link rel="shortcut icon" href="http://localhost:5005/view/czi/pbmc3k.h5ad/static/assets/favicon.ico">'
         self.assertEqual(actual, expected)
+
+
+if __name__ == "__main__":
+    unittest.main()