fixed file paths in test files for the changed tests structure

Author: Alison Wu

tests/conftest.py

@@ -22,8 +22,9 @@ def user_filesystem(tmp_path):
 @pytest.fixture
 def datafile():
     """Fixture to dynamically load any test file."""
+    base_path = Path(__file__).parent / "testdata"  # Adjusted base path
 
     def _load(filename):
-        return "tests/testdata/" + filename
+        return str(base_path / filename)
 
     return _load

tests/diffpy/utils/parsers/test_serialization.py

@@ -7,20 +7,19 @@
 from diffpy.utils.parsers.loaddata import loadData
 from diffpy.utils.parsers.serialization import deserialize_data, serialize_data
 
-tests_dir = os.path.dirname(os.path.abspath(locals().get("__file__", "file.py")))
-
 
 def test_load_multiple(tmp_path, datafile):
     # Load test data
     targetjson = datafile("targetjson.json")
     generatedjson = tmp_path / "generated_serialization.json"
 
-    tlm_list = os.listdir(os.path.join(tests_dir, "testdata", "dbload"))
-    tlm_list.sort()
+    dbload_dir = os.path.dirname(datafile("dbload/e1.gr"))
+    tlm_list = sorted(os.listdir(dbload_dir))
+
     generated_data = None
     for hfname in tlm_list:
         # gather data using loadData
-        headerfile = os.path.normpath(os.path.join(tests_dir, "testdata", "dbload", hfname))
+        headerfile = os.path.join(dbload_dir, hfname)
         hdata = loadData(headerfile, headers=True)
         data_table = loadData(headerfile)