feat: stapler challenge for self discovery

tests/test_handlers.py

@@ -204,6 +204,17 @@ class TestRequestHandler(BaseHandlerTestCase):
         ):
             handler.do_HEAD()
 
+    def test_do_head_stapler(self) -> None:
+        handler = self._get_handler("/.well-known/stapler/something")
+        with (
+            self.expects_status_only(
+                handler,
+                http.HTTPStatus.NO_CONTENT,
+            ),
+            self.seal_mocks(),
+        ):
+            handler.do_HEAD()
+
     def test_do_head_forward(self) -> None:
         handler = self._get_handler("/file")
         with (
@@ -222,6 +233,17 @@ class TestRequestHandler(BaseHandlerTestCase):
         ):
             handler.do_GET()
 
+    def test_do_get_stapler(self) -> None:
+        handler = self._get_handler("/.well-known/stapler/something")
+        with (
+            self.expects_status_only(
+                handler,
+                http.HTTPStatus.NO_CONTENT,
+            ),
+            self.seal_mocks(),
+        ):
+            handler.do_GET()
+
     def test_do_get_forward_on_other_path(self) -> None:
         handler = self._get_handler("/file")
         with (
@@ -1373,3 +1395,14 @@ class TestUpgradeHandler(BaseHandlerTestCase):
             self.seal_mocks(),
         ):
             handler.do_HEAD()
+
+    def test_do_head_stapler(self) -> None:
+        handler = self._get_handler("/.well-known/stapler/something")
+        with (
+            self.expects_status_only(
+                handler,
+                http.HTTPStatus.NO_CONTENT,
+            ),
+            self.seal_mocks(),
+        ):
+            handler.do_HEAD()