Fix test errors

Author: ElliottKasoar

conftest.py

@@ -5,6 +5,8 @@
 
 from __future__ import annotations
 
+import sys
+
 import pytest
 
 
@@ -34,3 +36,11 @@ def pytest_collection_modifyitems(config, items):
     for item in items:
         if "extra_mlips" in item.keywords:
             item.add_marker(skip_extra_mlips)
+
+
+@pytest.fixture(autouse=True)
+def capture_wrap():
+    """Block closure of stderr and stdout."""
+    sys.stderr.close = lambda *args, **kwargs: None
+    sys.stdout.close = lambda *args, **kwargs: None
+    yield

tests/test_neb_cli.py

@@ -42,30 +42,26 @@ def test_neb():
 
     assert not results_dir.exists()
 
-    import subprocess
-
     try:
-        result = subprocess.run(
+        result = runner.invoke(
+            app,
             [
-                "janus",
                 "neb",
                 "--init-struct",
-                str(DATA_PATH / "LiFePO4_start.cif"),
+                DATA_PATH / "LiFePO4_start.cif",
                 "--final-struct",
-                str(DATA_PATH / "LiFePO4_end.cif"),
+                DATA_PATH / "LiFePO4_end.cif",
                 "--interpolator",
                 "pymatgen",
                 "--fmax",
-                str(5),
+                5,
                 "--n-images",
-                str(5),
+                5,
                 "--plot-band",
                 "--write-band",
             ],
-            capture_output=True,
-            check=True,
         )
-        assert result.returncode == 0
+        assert result.exit_code == 0
 
         assert results_path.exists()
         assert band_path.exists()