[REF] tests: Detecting duplicated lines occurrences (#504)

* Add a missing clean for consider-merging-classes-inherited check

src/pylint_odoo/checkers/odoo_addons.py

@@ -579,7 +579,6 @@ def __init__(self, linter: PyLinter):
 
     def close(self):
         """Final process get all cached values and add messages"""
-        self.linter.config.deprecated_odoo_model_methods = set()
         for (_manifest_path, odoo_class_inherit), inh_nodes in self._odoo_inherit_items.items():
             # Skip _inherit='other.model' _name='model.name' because is valid
             inh_nodes = {
@@ -597,6 +596,7 @@ def close(self):
             self.add_message(
                 "consider-merging-classes-inherited", node=first_node, args=(odoo_class_inherit, ", ".join(path_nodes))
             )
+        self._odoo_inherit_items = defaultdict(set)
 
     def visit_module(self, node):
         """Initizalize the cache to save the original library name

tests/test_main.py

@@ -5,7 +5,7 @@
 import sys
 import unittest
 import warnings
-from collections import defaultdict
+from collections import Counter, defaultdict
 from glob import glob
 from io import StringIO
 from tempfile import NamedTemporaryFile
@@ -426,13 +426,18 @@ def test_175_prohibited_method_override(self):
 
     def test_180_jobs(self):
         """Using jobs could raise new errors"""
-        self.default_extra_params += ["--jobs=4"]
+        self.default_extra_params += ["--jobs=2"]
         pylint_res = self.run_pylint(self.paths_modules, verbose=True)
         # pylint_res.linter.stats.by_msg has a issue generating the stats wrong with --jobs
         res = self._get_messages_from_output(pylint_res)
         real_errors = {key: len(set(lines)) for key, lines in res.items()}
         self.assertEqual(self.expected_errors, real_errors)
 
+        for key, lines in res.items():
+            lines_counter = Counter(tuple(lines))
+            for line, count in lines_counter.items():
+                self.assertLessEqual(count, 2, "%s duplicated more than 2 times. Line %s" % (key, line))
+
     @staticmethod
     def re_replace(sub_start, sub_end, substitution, content):
         re_sub = re.compile(rf"^{re.escape(sub_start)}$.*^{re.escape(sub_end)}$", re.M | re.S)