Fixed generation of pb_types and models in tests

Signed-off-by: Grzegorz Latosinski <glatosinski@antmicro.com>

tests/test_v2x.py

diff --git a/tests/test_v2x.py b/tests/test_v2x.py
index a97841a..3e81843 100644
--- a/tests/test_v2x.py
+++ b/tests/test_v2x.py
@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
 
-import pytest
 from pathlib import Path
 import os
 from functools import cmp_to_key
@@ -55,9 +54,6 @@
         None)
     with open(newpbfile, 'w') as model:
         model.write(pbtypeout)
-    convertedmodel = convert.vtr_stylize_xml(newpbfile)
-    with open(newpbfile, 'w') as model:
-        model.write(convertedmodel)
 
     newpbfile = os.path.join(testdir, 'vtr/lutff-pair/ff/ff.pb_type.xml')
     pbtypeout = vlog_to_pbtype.vlog_to_pbtype(
@@ -66,9 +62,6 @@
         'DFF')
     with open(newpbfile, 'w') as model:
         model.write(pbtypeout)
-    convertedmodel = convert.vtr_stylize_xml(newpbfile)
-    with open(newpbfile, 'w') as model:
-        model.write(convertedmodel)
 
 
 def order_based_on_deps(left, right):
@@ -147,7 +140,7 @@
     convertedgolden = convert.vtr_stylize_xml(modelfile)
     convertedmodel = convert.vtr_stylize_xml(generatedmodelfile)
 
-    with open(generatedmodelfile, 'w') as model:
+    with open(generatedmodelfile + '.actual', 'w') as model:
         model.write(convertedmodel)
 
     assert convertedmodel == convertedgolden
@@ -177,7 +170,7 @@
     convertedgolden = convert.vtr_stylize_xml(testdatafile)
     convertedmodel = convert.vtr_stylize_xml(generatedmodelfile)
 
-    with open(generatedmodelfile, 'w') as model:
+    with open(generatedmodelfile + '.actual', 'w') as model:
         model.write(convertedmodel)
 
     assert convertedmodel == convertedgolden