Fix bug

- Content of --help sections were accumulating

fastargs/config.py

@@ -73,8 +73,8 @@ def augment_argparse(self, parser):
         previous_epilog = ""
         while True:
             epilog = ""
-            table_content = [['Name', 'Default', 'Constraint', 'Description']]
             for sec_path, entries in self.sections_to_entries.items():
+                table_content = [['Name', 'Default', 'Constraint', 'Description']]
                 for path in entries:
                     param = self.entries[path]
                     if not param.section.is_enabled(self):

tests/test_sources.py

@@ -262,6 +262,33 @@ def test_flag(self):
         self.assertTrue(cfg['a.a'])
         self.assertFalse(cfg['a.b'])
 
+    def test_duplicate_sections(self):
+        Section('a').params(
+            a=Param(int)
+        )
+        Section('b').params(
+            b=Param(int)
+        )
+
+        cfg = get_current_config()
+        parser = argparse.ArgumentParser(description='Test lib')
+
+        def fake_exit(*args, **kwargs):
+            pass
+
+        fakeio = io.StringIO("")
+
+        with patch('sys.argv', ['pp', '--help']):
+            with patch('sys.exit', fake_exit):
+                with patch('sys.stdout', fakeio):
+                    cfg.augment_argparse(parser)
+                    cfg.collect_argparse_args(parser)
+
+        output = fakeio.getvalue()
+
+        self.assertEqual(output.count('a.a'), 1)
+        self.assertEqual(output.count('b.b'), 1)
+
 
 if __name__ == '__main__':
     unittest.main()