Change tests permission (#74)

Author: ggurioli

tests/test_blade.py

@@ -33,4 +33,4 @@ def test_exception(self):
 
     def test_init(self):
         sh = Shaft("tests/test_datasets/shaft.iges")
-        assert sh.filename == "tests/test_datasets/shaft.iges"
+        assert sh.filename == "tests/test_datasets/shaft.iges"