fix unclosed file ResourceWarning

part of #2830

diff --git a/test/sql/test_types.py b/test/sql/test_types.py
index 91e467aed0e34969e06c9fd18eaf08bd7c9fa0c3..e887e2a7ec7cc32b2121826ae9a00e98ed0d6439 100644 (file)
--- a/test/sql/test_types.py
+++ b/test/sql/test_types.py
@@ -1218,7 +1218,8 @@ class BinaryTest(fixtures.TestBase, AssertsExecutionResults):
 
     def load_stream(self, name):
         f = os.path.join(os.path.dirname(__file__), "..", name)
-        return open(f, mode='rb').read()
+        with open(f, mode='rb') as o:
+            return o.read()
 
 class ExpressionTest(fixtures.TestBase, AssertsExecutionResults, AssertsCompiledSQL):
     __dialect__ = 'default'