update argv arguments

workflow/tests/test_pool_and_psuedoreplicate.py

@@ -63,9 +63,9 @@ def test_check_controls_single(design_experiment_3):
 
 @pytest.mark.unit
 def test_single_rep(design_experiment_2):
-    sys.argv.extend(['--design', design_experiment_2])
+    sys.argv.extend(['--design', 'design_experiment_2'])
     sys.argv.extend(['--paired', 'true'])
-    sys.argv.extend(['--cutoff', 1.2])
+    sys.argv.extend(['--cutoff', '1.2'])
     single_rep = pool_and_psuedoreplicate.main()