Apply suggestions from code review

Co-authored-by: minhkhul <118945681+minhkhul@users.noreply.github.com>

Author: aysim319

nssp/tests/conftest.py

@@ -62,6 +62,12 @@ def params_w_patch(params):
 
 @pytest.fixture(scope="function")
 def run_as_module(params):
+    """
+    Fixture to use TEST_DATA when testing run_module.
+
+    This fixture patches Socrara to return the predefined test data
+    """
+
     with patch('sodapy.Socrata.get') as mock_get:
         def side_effect(*args, **kwargs):
             if kwargs['offset'] == 0:
@@ -76,6 +82,12 @@ def side_effect(*args, **kwargs):
 
 @pytest.fixture(scope="function")
 def run_as_module_hrr(params):
+    """
+    Fixture to use HRR_TEST_DATA when testing run_module.
+
+    This fixture patches socrara to return the predefined test data for HRR region.
+    """
+
     with patch('sodapy.Socrata.get') as mock_get, \
          patch('delphi_nssp.run.GEOS', ["hrr"]):
         def side_effect(*args, **kwargs):

nssp/tests/test_run.py

@@ -58,6 +58,7 @@ def test_output_files_exist(self, params, run_as_module):
 
         assert set(csv_files) == set(expected_files)
 
+        # Verify that all generated file have correct columns.
         for geo in GEOS:
             df = pd.read_csv(
                 f"{export_dir}/weekly_{date_prefix[2]}_{geo}_{metrics[0]}.csv")