Honor the advertised debugger detection marker override

pytest_timeout.py

@@ -408,13 +408,16 @@ def _parse_marker(marker):
     if not marker.args and not marker.kwargs:
         raise TypeError("Timeout marker must have at least one argument")
     timeout = method = func_only = NOTSET = object()  # noqa: N806
+    disable_debugger_detection = None
     for kw, val in marker.kwargs.items():
         if kw == "timeout":
             timeout = val
         elif kw == "method":
             method = val
         elif kw == "func_only":
             func_only = val
+        elif kw == "disable_debugger_detection":
+            disable_debugger_detection = val
         else:
             msg = f"Invalid keyword argument for timeout marker: {kw}"
             raise TypeError(msg)
@@ -434,7 +437,7 @@ def _parse_marker(marker):
         method = None
     if func_only is NOTSET:
         func_only = None
-    return Settings(timeout, method, func_only, None)
+    return Settings(timeout, method, func_only, disable_debugger_detection)
 
 
 def _validate_timeout(timeout, where):

test_pytest_timeout.py

@@ -729,3 +729,19 @@ def test_two():
     result = pytester.runpytest_subprocess()
     result.stdout.fnmatch_lines(["*!! session-timeout: 1.0 sec exceeded !!!*"])
     result.assert_outcomes(passed=1)
+
+
+@pytest.mark.parametrize("disabled", [True, False])
+def test_debugger_detection_marker(pytester, disabled):
+    pytester.makepyfile(f"""
+        import pytest
+        import pytest_timeout
+
+        @pytest.mark.timeout(0, disable_debugger_detection={disabled})
+        def test_settings(request):
+            settings = pytest_timeout._get_item_settings(request.node)
+            assert settings.disable_debugger_detection is {disabled}
+    """)
+    result = pytester.runpytest_subprocess()
+    result.assert_outcomes(passed=1)
+    assert result.ret == 0