[FIX] printing_auto_base: don't print twice

Fix same record printed multiple times

printing_auto_base/tests/model_test.py

@@ -0,0 +1,37 @@
+from odoo import fields, models
+
+
+def setup_test_model(env, model_cls):
+    """Pass a test model class and initialize it.
+
+    Courtesy of SBidoul from https://github.com/OCA/mis-builder :)
+    """
+    model_cls._build_model(env.registry, env.cr)
+    env.registry.setup_models(env.cr)
+    env.registry.init_models(
+        env.cr, [model_cls._name], dict(env.context, update_custom_fields=True)
+    )
+
+
+def teardown_test_model(env, model_cls):
+    """Pass a test model class and deinitialize it.
+
+    Courtesy of SBidoul from https://github.com/OCA/mis-builder :)
+    """
+    if not getattr(model_cls, "_teardown_no_delete", False):
+        del env.registry.models[model_cls._name]
+    env.registry.setup_models(env.cr)
+
+
+class PrintingAutoTesterChild(models.Model):
+    _name = "printingauto.tester.child"
+
+    name = fields.Char()
+
+
+class PrintingAutoTester(models.Model):
+    _name = "printingauto.tester"
+    _inherit = "printing.auto.mixin"
+
+    name = fields.Char()
+    child_ids = fields.Many2many("printingauto.tester.child")