add docker compose

layercake/tests/test_dynamodb.py

@@ -58,9 +58,12 @@ def test_keypair():
 
 def test_prefixkey():
     key = PrefixKey('emails')
-    assert key == 'emails'
+    assert key == 'emails#'
     assert isinstance(key, PrefixKey)
 
+    delimiter = PrefixKey('emails', None)
+    assert delimiter == 'emails'
+
 
 def test_transact_write_items(
     dynamodb_seeds,
@@ -195,7 +198,7 @@ def test_collection_get_items(
 
     # This data was added from seeds
     emails = collect.get_items(
-        KeyPair('5OxmMjL-ujoR5IMGegQz', PrefixKey('emails#')),
+        KeyPair('5OxmMjL-ujoR5IMGegQz', PrefixKey('emails')),
     )
     assert emails == {
         'items': [