[Tests] Fixed fil_test.py assertions

- PyTest 6 failed to catch the assert, but 7 does

kibot/gs.py

@@ -84,6 +84,7 @@ class GS(object):
     # Name for the output we are generating
     current_output = None
     test_boolean = True
+    test_number = 5
     stackup = None
     #
     # Global defaults

tests/.config/kiplot/plugins/fil_test.py

@@ -6,12 +6,14 @@ logger = log.get_logger(__name__)
 
 
 with document:
-    avar = GS.debug_level
+    avar = GS.test_number
     """ Documentation """
     bvar = GS.test_boolean
     """ Other doc """
-assert _help_avar == '[number=0] Documentation. Affected by global options', _help_avar  # noqa: F821
+assert _help_avar == '[number=5] Documentation. Affected by global options', _help_avar  # noqa: F821
 assert _help_bvar == '[boolean=true] Other doc. Affected by global options', _help_bvar  # noqa: F821
+logger.debug('Test filter imported, assertions passed, debug_level: {}'.format(GS.debug_level))
+logger.debug('_help_avar: {}'.format(_help_avar))  # noqa: F821
 
 
 @filter_class