1 files changed, 25 insertions, 0 deletions
diff --git a/lldb/test/API/functionalities/plugins/python_os_plugin/TestPythonOSPlugin.py b/lldb/test/API/functionalities/plugins/python_os_plugin/TestPythonOSPlugin.py
index fe78edd98f4d..e4997f0742d0 100644
--- a/lldb/test/API/functionalities/plugins/python_os_plugin/TestPythonOSPlugin.py
+++ b/lldb/test/API/functionalities/plugins/python_os_plugin/TestPythonOSPlugin.py
@@ -131,6 +131,26 @@ class PluginPythonOSPlugin(TestBase):
             "Make sure there is no thread 0x333333333 after we unload the python OS plug-in",
         )
 
+    tid_regex = re.compile(r"tid = ((0x)?[0-9a-fA-F]+)")
+
+    def get_tid_from_thread_info_command(self, thread, use_backing_thread):
+        interp = self.dbg.GetCommandInterpreter()
+        result = lldb.SBCommandReturnObject()
+
+        backing_thread_arg = ""
+        if use_backing_thread:
+            backing_thread_arg = "--backing-thread"
+
+        interp.HandleCommand(
+            "thread info {0} {1}".format(thread.GetIndexID(), backing_thread_arg),
+            result,
+            True,
+        )
+        self.assertTrue(result.Succeeded(), "failed to run thread info")
+        match = self.tid_regex.search(result.GetOutput())
+        self.assertNotEqual(match, None)
+        return int(match.group(1), 0)
+
     def run_python_os_step(self):
         """Test that the Python operating system plugin works correctly and allows single stepping of a virtual thread that is backed by a real thread"""
 
@@ -209,6 +229,11 @@ class PluginPythonOSPlugin(TestBase):
         # it to
         thread.StepOver()
 
+        tid_os = self.get_tid_from_thread_info_command(thread, False)
+        self.assertEqual(tid_os, 0x111111111)
+        tid_real = self.get_tid_from_thread_info_command(thread, True)
+        self.assertNotEqual(tid_os, tid_real)
+
         frame = thread.GetFrameAtIndex(0)
         self.assertTrue(
             frame.IsValid(), "Make sure we get a frame from thread 0x111111111"