fix: give both hashes in the untested table

A row said the declared hash was contradicted by the local file and
named neither. The table now prints the hashes the platform declares
and the path and hashes of the copy the collection holds.

tests/test_site_platform_hashes.py

@@ -44,5 +44,31 @@ class EachRowItsDeclaration(unittest.TestCase):
         self.assertNotIn(A, saturn)
 
 
+class AnUntestedRowNamesBothHashes(unittest.TestCase):
+    """The gaps page said "declared hash contradicted by the local file" for
+    RetroDECK's dsifirmware.bin and named neither the dump RetroDECK asks for
+    nor the one the collection holds."""
+
+    def test_declared_and_held(self):
+        import generate_site as gs
+
+        path = "bios/Nintendo/Nintendo DS/dsifirmware.bin"
+        declared, held = "1" * 64, "2" * 64
+        config = {"systems": {"nintendo-ds": {"files": [
+            {"name": "dsifirmware.bin", "sha256": declared}]}}}
+        detail = {"name": "dsifirmware.bin", "system": "nintendo-ds"}
+        problem = {
+            "platform": "RetroDECK", "name": "dsifirmware.bin", "status": "untested",
+            "required": True, "reason": "declared hash contradicted by the local file",
+            "declared": gs._declared_hashes(config, detail), "path": path,
+        }
+        db = {"files": {"f" * 40: {"path": path, "sha256": held}}}
+        table = "\n".join(gs._render_problem_files([problem], db=db))
+        row = next(line for line in table.splitlines() if "dsifirmware" in line)
+        self.assertIn(f"sha256 `{declared}`", row)
+        self.assertIn(f"sha256 `{held}`", row)
+        self.assertIn(f"`{path}`", row)
+
+
 if __name__ == "__main__":
     unittest.main()