godosa-engine: initial public history

1 files changed, 42 insertions, 0 deletions

diff --git a/scripts/test_digest_compare.py b/scripts/test_digest_compare.py
new file mode 100644
index 0000000..400e057
--- /dev/null
+++ b/scripts/test_digest_compare.py
@@ -0,0 +1,42 @@
+import subprocess
+import sys
+import tempfile
+import unittest
+from pathlib import Path
+
+SCRIPT = Path(__file__).with_name("digest_compare.py")
+
+
+def run(a: str, b: str) -> subprocess.CompletedProcess:
+    with tempfile.TemporaryDirectory() as d:
+        pa, pb = Path(d, "a.log"), Path(d, "b.log")
+        pa.write_text(a)
+        pb.write_text(b)
+        return subprocess.run([sys.executable, str(SCRIPT), str(pa), str(pb)], capture_output=True, text=True)
+
+
+class DigestCompareTests(unittest.TestCase):
+    def test_equal(self):
+        r = run("x\ndigest 1 0 00000000000000aa\n", "y\ndigest 1 0 00000000000000aa\n")
+        self.assertEqual(0, r.returncode)
+        self.assertIn("1 digests equal", r.stdout)
+
+    def test_first_difference(self):
+        r = run("digest 1 0 00000000000000aa\ndigest 2 0 00000000000000bb\n",
+                "digest 1 0 00000000000000aa\ndigest 2 0 00000000000000cc\n")
+        self.assertEqual(1, r.returncode)
+        self.assertIn("digest 2 differs", r.stdout)
+
+    def test_count_mismatch(self):
+        r = run("digest 1 0 00000000000000aa\n", "digest 1 0 00000000000000aa\ndigest 2 0 00000000000000bb\n")
+        self.assertEqual(1, r.returncode)
+        self.assertIn("1 vs 2 digests", r.stdout)
+
+    def test_none(self):
+        r = run("x\n", "y\n")
+        self.assertEqual(1, r.returncode)
+        self.assertIn("no digest lines", r.stdout)
+
+
+if __name__ == "__main__":
+    unittest.main()