From b3da26a04572506aea92da377cbefb6899a8d1df Mon Sep 17 00:00:00 2001
From: Zakui <zakuijules@gmail.com>
Date: Fri, 12 Sep 2025 13:02:10 -0500
Subject: [PATCH 1/2] Added support for async to timer panel

---
 .gitignore                      |  2 +-
 debug_toolbar/panels/timer.py   |  1 +
 docs/architecture.rst           |  2 +-
 docs/changes.rst                |  1 +
 tests/test_integration_async.py | 24 ++++++++++++++++++++++++
 5 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/.gitignore b/.gitignore
index 1b23b0a2d..1bb868787 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,5 +15,5 @@ coverage.xml
 venv
 .direnv/
 .envrc
-venv
+.venv
 .vscode
diff --git a/debug_toolbar/panels/timer.py b/debug_toolbar/panels/timer.py
index 6ef9f0d7c..c2e63cf10 100644
--- a/debug_toolbar/panels/timer.py
+++ b/debug_toolbar/panels/timer.py
@@ -16,6 +16,7 @@ class TimerPanel(Panel):
     """
     Panel that displays the time a response took in milliseconds.
     """
+    is_async = True
 
     def nav_subtitle(self):
         stats = self.get_stats()
diff --git a/docs/architecture.rst b/docs/architecture.rst
index 54b3b9318..f3bae60df 100644
--- a/docs/architecture.rst
+++ b/docs/architecture.rst
@@ -81,7 +81,7 @@ Problematic Parts
   the main benefit of the toolbar
 - Support for async and multi-threading: ``debug_toolbar.middleware.DebugToolbarMiddleware``
   is now async compatible and can process async requests. However certain
-  panels such as ``TimerPanel``, ``RequestPanel`` and ``ProfilingPanel`` aren't
+  panels such as ``RequestPanel`` and ``ProfilingPanel`` aren't
   fully compatible and currently being worked on. For now, these panels
   are disabled by default when running in async environment.
   follow the progress of this issue in `Async compatible toolbar project <https://github.com/orgs/jazzband/projects/9>`_.
diff --git a/docs/changes.rst b/docs/changes.rst
index 6a58f7e77..452242279 100644
--- a/docs/changes.rst
+++ b/docs/changes.rst
@@ -4,6 +4,7 @@ Change log
 Pending
 -------
 
+* Added support for async to timer panel.
 * Added a note about the default password in ``make example``.
 * Removed logging about the toolbar failing to serialize a value into JSON.
 * Moved the the import statement of ``debug_toolbar.urls`` to within the if
diff --git a/tests/test_integration_async.py b/tests/test_integration_async.py
index 3cc2889c5..8c3176542 100644
--- a/tests/test_integration_async.py
+++ b/tests/test_integration_async.py
@@ -1,4 +1,5 @@
 import unittest
+import re
 from unittest.mock import patch
 
 import html5lib
@@ -506,6 +507,29 @@ async def test_intercept_redirects(self):
         # Link to LOCATION header.
         self.assertIn(b'href="/regular/redirect/"', response.content)
 
+    async def test_server_timing_headers(self):
+        response = await self.async_client.get("/execute_sql/")
+        server_timing = response["Server-Timing"]
+        expected_partials = [
+            r'TimerPanel_utime;dur=(\d)*(\.(\d)*)?;desc="User CPU time", ',
+            r'TimerPanel_stime;dur=(\d)*(\.(\d)*)?;desc="System CPU time", ',
+            r'TimerPanel_total;dur=(\d)*(\.(\d)*)?;desc="Total CPU time", ',
+            r'TimerPanel_total_time;dur=(\d)*(\.(\d)*)?;desc="Elapsed time", ',
+            r'SQLPanel_sql_time;dur=(\d)*(\.(\d)*)?;desc="SQL 1 queries", ',
+            r'CachePanel_total_time;dur=0;desc="Cache 0 Calls"',
+        ]
+        for expected in expected_partials:
+            self.assertTrue(re.compile(expected).search(server_timing))
+
+    @override_settings(DEBUG_TOOLBAR_CONFIG={"RENDER_PANELS": True})
+    async def test_timer_panel(self):
+        response = await self.async_client.get("/regular/basic/")
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(
+            response,
+            '<script type="module" src="/static/debug_toolbar/js/timer.js" async>',
+        )
+
     async def test_auth_login_view_without_redirect(self):
         response = await self.async_client.get("/login_without_redirect/")
         self.assertEqual(response.status_code, 200)

From 2498274834a63b938fcfc5136b4488385169a6a9 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Fri, 12 Sep 2025 18:10:53 +0000
Subject: [PATCH 2/2] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 debug_toolbar/panels/timer.py   | 1 +
 tests/test_integration_async.py | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/debug_toolbar/panels/timer.py b/debug_toolbar/panels/timer.py
index c2e63cf10..f766d6db0 100644
--- a/debug_toolbar/panels/timer.py
+++ b/debug_toolbar/panels/timer.py
@@ -16,6 +16,7 @@ class TimerPanel(Panel):
     """
     Panel that displays the time a response took in milliseconds.
     """
+
     is_async = True
 
     def nav_subtitle(self):
diff --git a/tests/test_integration_async.py b/tests/test_integration_async.py
index 8c3176542..a9cfbb28a 100644
--- a/tests/test_integration_async.py
+++ b/tests/test_integration_async.py
@@ -1,5 +1,5 @@
-import unittest
 import re
+import unittest
 from unittest.mock import patch
 
 import html5lib