redesign

tests/test_source_conversion.py

@@ -1,4 +1,5 @@
 import unittest
+import hashlib
 
 from source_conversion import (
     InvalidSourceError,
@@ -58,6 +59,10 @@ class ConvertSourceTests(unittest.TestCase):
         self.assertEqual(b''.join(body_chunks), b'0.0.0.0 first.test\n0.0.0.0 second.test\n')
         self.assertTrue(result.output.closed)
         self.assertEqual(result.lines_emitted, 2)
+        self.assertEqual(
+            result.content_sha256,
+            hashlib.sha256(b'0.0.0.0 first.test\n0.0.0.0 second.test\n').hexdigest(),
+        )
 
     def test_octet_stream_without_charset(self):
         result = run_conversion(