Initial server source import

tests/test_process_identity_linux.py

@@ -0,0 +1,35 @@
+from pathlib import Path
+import subprocess
+import sys
+import unittest
+
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / 'app'))
+
+import process_identity
+
+
+@unittest.skipUnless(sys.platform.startswith('linux'), 'requires Linux pidfds')
+class LinuxProcessIdentityTests(unittest.TestCase):
+    def test_pidfd_is_bound_before_exact_identity_and_drives_termination(self):
+        process = subprocess.Popen([
+            sys.executable, '-I', '-S', '-B', '-c', 'import time; time.sleep(60)',
+        ])
+        try:
+            retained = process_identity.open_process(process.pid, terminate=True)
+            self.assertIsNotNone(retained._pidfd)
+            self.assertEqual(retained.identity.pid, process.pid)
+            retained.terminate()
+            self.assertTrue(retained.wait(5))
+            retained.close()
+            process.wait(timeout=5)
+            self.assertIsNotNone(process.returncode)
+        finally:
+            if process.poll() is None:
+                process.kill()
+                process.wait(timeout=5)
+
+
+if __name__ == '__main__':
+    unittest.main()