Use test_name in place of item name for saved array

Previously tests could not be inherited from classes in a way that let each class save its own array. This change makes the file written use the full test name, including the class name, instead of just the test name within the class.

Author: csaluski

pytest_arraydiff/plugin.py

@@ -313,7 +313,9 @@ def pytest_runtest_call(self, item):
             if single_reference:
                 filename = item.originalname + '.' + extension
             else:
-                filename = item.name + '.' + extension
+                filename = test_name
+                filename = filename.replace('.', '_')
+                filename = filename + '.' + extension
                 filename = filename.replace('[', '_').replace(']', '_')
                 filename = filename.replace('_.' + extension, '.' + extension)