Fix single_reference=True

Author: pllim

CHANGES.md

@@ -1,6 +1,8 @@
 0.7 (unreleased)
 ----------------
 
+- Fix broken ``single_reference=True`` usage. [#43]
+
 0.6 (2023-11-15)
 ----------------
 

pytest_arraydiff/plugin.py

@@ -310,7 +310,7 @@ def pytest_runtest_call(self, item):
         # Find test name to use as plot name
         filename = compare.kwargs.get('filename', None)
         if filename is None:
-            filename = item.name + '.' + extension
+            filename = item.function + '.' + extension
             if not single_reference:
                 filename = filename.replace('[', '_').replace(']', '_')
                 filename = filename.replace('_.' + extension, '.' + extension)