Fix cpu percentage interpretations

tests/unit/test_process.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 from pathlib import Path
 import sys
 import unittest
+from unittest.mock import patch
 
 
 SRC_ROOT = Path(__file__).resolve().parents[2] / "src"
@@ -69,11 +70,11 @@ class ProcessTests(unittest.TestCase):
     def test_get_wrapped_command_sequence_wraps_cpulimit_around_nice_when_both_configured(self):
         wrapped = getWrappedCommandSequence(
             ["ffmpeg", "-i", "input.mkv"],
-            context={"resource_limits": {"niceness": 5, "cpu_percent": 42}},
+            context={"resource_limits": {"niceness": 5, "cpu_limit": 200}},
         )
 
         self.assertEqual(
-            ["cpulimit", "-l", "42", "--", "nice", "-n", "5", "ffmpeg", "-i", "input.mkv"],
+            ["cpulimit", "-l", "200", "--", "nice", "-n", "5", "ffmpeg", "-i", "input.mkv"],
             wrapped,
         )
 
@@ -83,6 +84,13 @@ class ProcessTests(unittest.TestCase):
     def test_normalize_cpu_percent_accepts_disabled_sentinel(self):
         self.assertIsNone(normalizeCpuPercent(0))
 
+    def test_normalize_cpu_percent_accepts_absolute_cpulimit_values(self):
+        self.assertEqual(200, normalizeCpuPercent(200))
+
+    def test_normalize_cpu_percent_converts_percent_of_present_cores(self):
+        with patch("ffx.process.getPresentCpuCount", return_value=8):
+            self.assertEqual(200, normalizeCpuPercent("25%"))
+
 
 if __name__ == "__main__":
     unittest.main()