Update return.

workflow/tests/test_pool_and_psuedoreplicate.py

@@ -36,9 +36,9 @@ def design_experiment_3(design_experiment):
     # Drop Replicate A_2
     design_df = design_experiment.drop(design_experiment.index[1])
     # Update to be paired as first
-    design_experiment.loc[0, 'control_tag_align'] = 'B_1.bedpe.gz'
-    design_experiment.loc[0, 'tag_align'] = 'A_1.bedpe.gz'
-    return design_experiment
+    design_df.loc[0, 'control_tag_align'] = 'B_1.bedpe.gz'
+    design_df.loc[0, 'tag_align'] = 'A_1.bedpe.gz'
+    return design_df
 
 
 @pytest.mark.unit