tests: increase coverage of check again

Signed-off-by: Henry Schreiner <[email protected]>

tests/test_virtualenv.py

@@ -389,7 +389,10 @@ def test_create(monkeypatch, make_one):
  assert dir_.join("test.txt").check()
 
 
-def test_create_reuse_environment(make_one):
+def test_create_reuse_environment(make_one, monkeypatch):
+ # Making the reuse requirement more strict
+ monkeypatch.setenv("NOX_ENABLE_STALENESS_CHECK", "1")
+
  venv, location = make_one(reuse_existing=True)
  venv.create()
 
@@ -430,36 +433,20 @@ def test_create_reuse_stale_venv_environment(make_one):
 
  reused = not venv.create()
 
- # The environment is not reused because it is a uv-style
- # environment.
  assert not reused
 
 
-def test_stale_venv_to_conda_environment(make_one):
+def test_not_stale_virtualenv_environment(make_one):
  venv, location = make_one(reuse_existing=True, venv_backend="virtualenv")
  venv.create()
 
  venv, location = make_one(reuse_existing=True, venv_backend="virtualenv")
- reused = venv.create()
+ reused = not venv.create()
 
- # The environment is not reused because it is now venv style
- # environment.
- assert not reused
+ assert reused
 
 
 @has_conda
-def test_stale_conda_to_venv_environment(make_one):
- venv, location = make_one(reuse_existing=True, venv_backend="conda")
- venv.create()
-
- venv, location = make_one(reuse_existing=True, venv_backend="virtualenv")
- reused = venv._check_reused_environment_type()
-
- # The environment is not reused because it is now conda style
- # environment.
- assert not reused
-
-
 def test_stale_virtualenv_to_conda_environment(make_one):
  venv, location = make_one(reuse_existing=True, venv_backend="virtualenv")
  venv.create()
@@ -472,11 +459,12 @@ def test_stale_virtualenv_to_conda_environment(make_one):
  assert not reused
 
 
+@has_conda
 def test_reuse_conda_environment(make_one):
- venv, location = make_one(reuse_existing=True, venv_backend="conda")
+ venv, _ = make_one(reuse_existing=True, venv_backend="conda")
  venv.create()
 
- venv, location = make_one(reuse_existing=True, venv_backend="conda")
+ venv, _ = make_one(reuse_existing=True, venv_backend="conda")
  reused = not venv.create()
 
  assert reused
@@ -489,20 +477,22 @@ def test_reuse_conda_environment(make_one):
  ("venv", "virtualenv", True),
  ("virtualenv", "uv", True),
  pytest.param("uv", "virtualenv", False, marks=has_uv),
+ pytest.param("conda", "virtualenv", False, marks=has_conda),
  ],
 )
 def test_stale_environment(make_one, frm, to, result):
- venv, location = make_one(reuse_existing=True, venv_backend=frm)
+ venv, _ = make_one(reuse_existing=True, venv_backend=frm)
  venv.create()
 
- venv.venv_backend = to
+ venv, _ = make_one(reuse_existing=True, venv_backend=to)
  reused = venv._check_reused_environment_type()
 
  assert reused == result
 
 
 @has_uv
-def test_create_reuse_stale_virtualenv_environment(make_one):
+def test_create_reuse_stale_virtualenv_environment(make_one, monkeypatch):
+ monkeypatch.setenv("NOX_ENABLE_STALENESS_CHECK", "1")
  venv, location = make_one(reuse_existing=True, venv_backend="venv")
  venv.create()