Update virtual env management in unit tests for Poetry 2.0

Author: smkent

tests/conftest.py

@@ -1,10 +1,19 @@
 import os
 from tempfile import TemporaryDirectory
 from typing import Iterator
+from unittest.mock import patch
 
 import pytest
 
 
+@pytest.fixture(scope="session", autouse=True)
+def subprocess_environment() -> Iterator[None]:
+    with patch.dict(os.environ, {}) as patched_env:
+        if "VIRTUAL_ENV" in patched_env:
+            del patched_env["VIRTUAL_ENV"]
+        yield
+
+
 def pytest_addoption(parser: pytest.Parser) -> None:
     group = parser.getgroup("cookie", "python-cookie test helpers")
     group.addoption(

tests/test_new_cookie.py

@@ -40,13 +40,15 @@ def test_new_cookie_create(temp_dir: str) -> None:
     ), "Untracked files present in template-rendered project"
 
     # Verify cruft is up to date
-    subprocess.check_call(["poetry", "run", "pip", "install", "toml"])
+    subprocess.check_call(
+        ["poetry", "run", "pip", "install", "toml"], cwd=project_dir
+    )
     subprocess.check_call(
         ["poetry", "run", "cruft", "diff", "--exit-code"], cwd=project_dir
     )
 
     # Install rendered project
-    subprocess.check_call(["poetry", "install"], cwd=project_dir)
+    subprocess.check_call(["poetry", "sync"], cwd=project_dir)
     # Run rendered project's tests
     subprocess.check_call(["poetry", "run", "poe", "test"], cwd=project_dir)
     # Build container for rendered project