Create temp_dir if not exists (#2781)

Closes https://github.com/tox-dev/tox/issues/2770

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/tox_env/test_api.py b/tests/tox_env/test_api.py
new file mode 100644
index 00000000..310e7fb5
--- /dev/null
+++ b/tests/tox_env/test_api.py
@@ -0,0 +1,18 @@
+from pathlib import Path
+
+from tox.pytest import ToxProjectCreator
+
+
+def test_ensure_temp_dir_exists(tox_project: ToxProjectCreator) -> None:
+    ini = "[testenv]\ncommands=python -c 'import os; os.path.exists(r\"{temp_dir}\")'"
+    project = tox_project({"tox.ini": ini})
+    result = project.run()
+    result.assert_success()
+
+
+def test_dont_cleanup_temp_dir(tox_project: ToxProjectCreator, tmp_path: Path) -> None:
+    (tmp_path / "foo" / "bar").mkdir(parents=True)
+    project = tox_project({"tox.ini": "[tox]\ntemp_dir=foo"})
+    result = project.run()
+    result.assert_success()
+    assert (tmp_path / "foo" / "bar").exists()