From 81a096426d1b80713d044a1aa00033dd283490fa Mon Sep 17 00:00:00 2001
From: Mathieu Kniewallner <mathieu.kniewallner@gmail.com>
Date: Mon, 8 Apr 2024 12:58:03 +0200
Subject: [PATCH] test(conftest): ensure that `pytest_sessionstart` hook runs
 once (#669)

---
 pyproject.toml               |  4 ++++
 tests/functional/conftest.py | 10 +++++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/pyproject.toml b/pyproject.toml
index 984b7b85..14ab1c39 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -107,6 +107,10 @@ warn_unreachable = true
 pretty = true
 show_error_codes = true
 
+[[tool.mypy.overrides]]
+module = ["xdist.*"]
+ignore_missing_imports = true
+
 [tool.deptry]
 extend_exclude = [
     "docs",
diff --git a/tests/functional/conftest.py b/tests/functional/conftest.py
index f9dfc0b7..160d8231 100644
--- a/tests/functional/conftest.py
+++ b/tests/functional/conftest.py
@@ -6,12 +6,20 @@
 from pathlib import Path
 
 import pytest
+import xdist
 
 from tests.functional.utils import DEPTRY_WHEEL_DIRECTORY
 from tests.utils import PDMVenvFactory, PipVenvFactory, PoetryVenvFactory
 
 
-def pytest_sessionstart() -> None:
+def pytest_sessionstart(session: pytest.Session) -> None:
+    # When running the tests on multiple workers with pytest-xdist, the hook will be run several times:
+    # - once from "master" node, when test suite starts
+    # - X times (where X is the number of workers), when tests start in each worker
+    # We only want to run the hook once, so we explicitly skip the hook if running on a pytest-xdist worker.
+    if xdist.is_xdist_worker(session):
+        return None
+
     deptry_wheel_path = Path(DEPTRY_WHEEL_DIRECTORY)
 
     print(f"Building `deptry` wheel in {deptry_wheel_path} to use it on functional tests...")  # noqa: T201