1 files changed, 62 insertions, 0 deletions
diff --git a/testing/mozbase/mozprocess/tests/test_detached.py b/testing/mozbase/mozprocess/tests/test_detached.py
new file mode 100644
index 0000000000..bc310fa3db
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/test_detached.py
@@ -0,0 +1,62 @@
+#!/usr/bin/env python
+
+import os
+
+import mozunit
+import proctest
+from mozprocess import processhandler
+
+here = os.path.dirname(os.path.abspath(__file__))
+
+
+class ProcTestDetached(proctest.ProcTest):
+    """Class to test for detached processes."""
+
+    def test_check_for_detached_before_run(self):
+        """Process is not started yet when checked for detached."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+
+        with self.assertRaises(RuntimeError):
+            p.check_for_detached(1234)
+
+    def test_check_for_detached_while_running_with_current_pid(self):
+        """Process is started, and check for detached with original pid."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        p.run()
+
+        orig_pid = p.pid
+        p.check_for_detached(p.pid)
+
+        self.assertEqual(p.pid, orig_pid)
+        self.assertIsNone(p.proc.detached_pid)
+
+        self.determine_status(p, True)
+        p.kill()
+
+    def test_check_for_detached_after_fork(self):
+        """Process is started, and check for detached with new pid."""
+        pass
+
+    def test_check_for_detached_after_kill(self):
+        """Process is killed before checking for detached pid."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        p.run()
+        p.kill()
+
+        orig_pid = p.pid
+        p.check_for_detached(p.pid)
+
+        self.assertEqual(p.pid, orig_pid)
+        self.assertIsNone(p.proc.detached_pid)
+
+        self.determine_status(p)
+
+
+if __name__ == "__main__":
+    mozunit.main()