diff --git a/pkgs/clan-cli/tests/__init__.py b/pkgs/clan-cli/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/pkgs/clan-cli/tests/environment.py b/pkgs/clan-cli/tests/environment.py
new file mode 100644
index 0000000..24226db
--- /dev/null
+++ b/pkgs/clan-cli/tests/environment.py
@@ -0,0 +1,14 @@
+import os
+from contextlib import contextmanager
+from typing import Iterator
+
+
+@contextmanager
+def mock_env(**environ: str) -> Iterator[None]:
+    original_environ = dict(os.environ)
+    os.environ.update(environ)
+    try:
+        yield
+    finally:
+        os.environ.clear()
+        os.environ.update(original_environ)
diff --git a/pkgs/clan-cli/tests/test_clan_ssh.py b/pkgs/clan-cli/tests/test_clan_ssh.py
index e864a18..628bc0e 100644
--- a/pkgs/clan-cli/tests/test_clan_ssh.py
+++ b/pkgs/clan-cli/tests/test_clan_ssh.py
@@ -1,7 +1,5 @@
-import os
 import sys
-from contextlib import contextmanager
-from typing import Iterator, Union
+from typing import Union
 
 import pytest
 import pytest_subprocess.fake_process
@@ -9,6 +7,8 @@ from pytest_subprocess import utils
 
 import clan_cli.ssh
 
+from .environment import mock_env
+
 
 def test_no_args(
     capsys: pytest.CaptureFixture, monkeypatch: pytest.MonkeyPatch
@@ -20,17 +20,6 @@ def test_no_args(
     assert captured.err.startswith("usage:")
 
 
-@contextmanager
-def mock_env(**environ: str) -> Iterator[None]:
-    original_environ = dict(os.environ)
-    os.environ.update(environ)
-    try:
-        yield
-    finally:
-        os.environ.clear()
-        os.environ.update(original_environ)
-
-
 # using fp fixture from pytest-subprocess
 def test_ssh_no_pass(fp: pytest_subprocess.fake_process.FakeProcess) -> None:
     with mock_env(CLAN_FLAKE="/mocked-flake"):