diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..b48fd4a
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,24 @@
+"""pytest fixtures"""
+from importlib import reload
+import os
+import types
+from unittest import mock
+
+import pytest
+
+import tljh
+
+
+@pytest.fixture
+def tljh_dir(tmpdir):
+    """Fixture for setting up a temporary tljh dir"""
+    tljh_dir = str(tmpdir.join("tljh").mkdir())
+    with mock.patch.dict(os.environ, {"TLJH_INSTALL_PREFIX": tljh_dir}):
+        reload(tljh)
+        for name in dir(tljh):
+            mod = getattr(tljh, name)
+            if isinstance(mod, types.ModuleType) and mod.__name__.startswith('tljh.'):
+                reload(mod)
+        assert tljh.config.INSTALL_PREFIX == tljh_dir
+        os.makedirs(tljh.config.STATE_DIR)
+        yield tljh_dir
diff --git a/tests/test_config.py b/tests/test_config.py
index aed0f49..f84582a 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -2,7 +2,6 @@
 Test configuration commandline tools
 """
 
-from importlib import reload
 import os
 import tempfile
 from unittest import mock
@@ -12,21 +11,6 @@ import pytest
 from tljh import config, configurer
 
 
-@pytest.fixture
-def tljh_dir(tmpdir):
-    """Fixture for setting up a temporary tljh dir"""
-    tljh_dir = str(tmpdir.join("tljh").mkdir())
-    with mock.patch.dict(
-        os.environ,
-        {"TLJH_INSTALL_PREFIX": tljh_dir}
-    ):
-        reload(config)
-        reload(configurer)
-        assert config.INSTALL_PREFIX == tljh_dir
-        os.makedirs(config.STATE_DIR)
-        yield tljh_dir
-
-
 def test_set_no_mutate():
     conf = {}