Add Avisynth video encoding workflow

unit_tests/test_exiftool.py

@@ -0,0 +1,39 @@
+from __future__ import annotations
+
+import subprocess
+import unittest
+from pathlib import Path
+from unittest.mock import patch
+
+from tools.exiftool import run_exiftool_command
+
+
+class ExiftoolInvocationTests(unittest.TestCase):
+    def test_windows_uses_utf8_argument_file_for_unicode_paths(self) -> None:
+        captured: dict[str, object] = {}
+
+        def fake_run(command, **kwargs):
+            captured["command"] = command
+            argument_file = Path(kwargs["cwd"]) / command[-1]
+            captured["contents"] = argument_file.read_text(encoding="utf-8")
+            return subprocess.CompletedProcess(command, 0)
+
+        with (
+            patch("tools.exiftool._use_windows_argument_file", return_value=True),
+            patch("tools.exiftool.subprocess.run", side_effect=fake_run),
+        ):
+            run_exiftool_command(
+                "exiftool.exe",
+                ["-j", "C:\\Photos\\M\u00e4rchen.jpg"],
+                check=True,
+            )
+
+        self.assertEqual(
+            captured["command"],
+            ["exiftool.exe", "-charset", "filename=UTF8", "-@", "arguments.txt"],
+        )
+        self.assertEqual(captured["contents"], "-j\nC:\\Photos\\M\u00e4rchen.jpg\n")
+
+
+if __name__ == "__main__":
+    unittest.main()