Add arg parser to pytest

workflow/tests/test_pool_and_psuedoreplicate.py

@@ -62,7 +62,8 @@ def test_check_controls_single(design_experiment_3):
 
 @pytest.mark.unit
 def test_single_rep(design_experiment_2):
-    single_rep = pool_and_psuedoreplicate.main(design_experiment_2, "true", 1.2)
+    args = self.parser.parse_args(['true', design_experiment_2, 1.2])
+    single_rep = pool_and_psuedoreplicate.main(args.paired, args.design, args.cutoff)
 
 
 @pytest.mark.singleend