1 files changed, 8 insertions, 1 deletions
diff --git a/Cython/Compiler/Tests/TestParseTreeTransforms.py b/Cython/Compiler/Tests/TestParseTreeTransforms.py
index e6889f8f2..6e29263e5 100644
--- a/Cython/Compiler/Tests/TestParseTreeTransforms.py
+++ b/Cython/Compiler/Tests/TestParseTreeTransforms.py
@@ -1,7 +1,9 @@
-import os
+import os.path
+import unittest
 
 from Cython.TestUtils import TransformTest
 from Cython.Compiler.ParseTreeTransforms import *
+from Cython.Compiler.ParseTreeTransforms import _calculate_pickle_checksums
 from Cython.Compiler.Nodes import *
 from Cython.Compiler import Main, Symtab, Options
 
@@ -276,6 +278,11 @@ class TestDebugTransform(DebuggerTestCase):
             raise
 
 
+class TestAnalyseDeclarationsTransform(unittest.TestCase):
+    def test_calculate_pickle_checksums(self):
+        checksums = _calculate_pickle_checksums(['member1', 'member2', 'member3'])
+        assert 2 <= len(checksums) <= 3, checksums  # expecting ['0xc0af380' (MD5), '0x0c75bd4', '0xa7a7b94']
+
 
 if __name__ == "__main__":
     import unittest