Rename pytest_report_header startpath parameter to start_path

src/_pytest/config/compat.py

@@ -13,7 +13,7 @@ imply_paths_hooks = {
     "pytest_ignore_collect": ("collection_path", "path"),
     "pytest_collect_file": ("file_path", "path"),
     "pytest_pycollect_makemodule": ("module_path", "path"),
-    "pytest_report_header": ("startpath", "startdir"),
+    "pytest_report_header": ("start_path", "startdir"),
     "pytest_report_collectionfinish": ("startpath", "startdir"),
 }
 

src/_pytest/hookspec.py

@@ -674,12 +674,12 @@ def pytest_assertion_pass(item: "Item", lineno: int, orig: str, expl: str) -> No
 
 
 def pytest_report_header(
-    config: "Config", startpath: Path, startdir: "LEGACY_PATH"
+    config: "Config", start_path: Path, startdir: "LEGACY_PATH"
 ) -> Union[str, List[str]]:
     """Return a string or list of strings to be displayed as header info for terminal reporting.
 
     :param pytest.Config config: The pytest config object.
-    :param Path startpath: The starting dir.
+    :param Path start_path: The starting dir.
     :param LEGACY_PATH startdir: The starting dir (deprecated).
 
     .. note::
@@ -696,7 +696,7 @@ def pytest_report_header(
         :ref:`discovers plugins during startup <pluginorder>`.
 
     .. versionchanged:: 7.0.0
-        The ``startpath`` parameter was added as a :class:`pathlib.Path`
+        The ``start_path`` parameter was added as a :class:`pathlib.Path`
         equivalent of the ``startdir`` parameter. The ``startdir`` parameter
         has been deprecated.
     """

src/_pytest/terminal.py

@@ -702,7 +702,7 @@ class TerminalReporter:
                 msg += " -- " + str(sys.executable)
             self.write_line(msg)
             lines = self.config.hook.pytest_report_header(
-                config=self.config, startpath=self.startpath
+                config=self.config, start_path=self.startpath
             )
             self._write_report_lines_from_hooks(lines)
 

testing/test_terminal.py

@@ -1461,8 +1461,8 @@ class TestGenericReporting:
         )
         pytester.mkdir("a").joinpath("conftest.py").write_text(
             """
-def pytest_report_header(config, startpath):
-    return ["line1", str(startpath)]
+def pytest_report_header(config, start_path):
+    return ["line1", str(start_path)]
 """
         )
         result = pytester.runpytest("a")