[FIX] sale_mrp, sale_mrp_margin: deduplicate tests

By inheriting from a test class that contains test methods, these tests
are executed twice.

closes odoo/odoo#150272

X-original-commit: 835f600eac6fd1ec202cd21876457b14d3d0af06
Signed-off-by: William Henrotin (whe) <whe@odoo.com>
Signed-off-by: Christophe Monniez (moc) <moc@odoo.com>

addons/sale_mrp/tests/test_sale_mrp_flow.py

@@ -9,8 +9,7 @@ from odoo.addons.stock_account.tests.test_stockvaluation import _create_accounti
 
 
 # these tests create accounting entries, and therefore need a chart of accounts
-@common.tagged('post_install', '-at_install')
-class TestSaleMrpFlow(ValuationReconciliationTestCommon):
+class TestSaleMrpFlowCommon(ValuationReconciliationTestCommon):
 
     @classmethod
     def setUpClass(cls, chart_template_ref=None):
@@ -237,6 +236,9 @@ class TestSaleMrpFlow(ValuationReconciliationTestCommon):
             move_line.quantity = qty_to_process[comp][0]
             move._action_done()
 
+
+@common.tagged('post_install', '-at_install')
+class TestSaleMrpFlow(TestSaleMrpFlowCommon):
     def test_00_sale_mrp_flow(self):
         """ Test sale to mrp flow with diffrent unit of measure."""
 

addons/sale_mrp_margin/tests/test_sale_mrp_flow.py

@@ -6,7 +6,7 @@ from odoo.tests import common, Form
 
 
 @common.tagged('post_install', '-at_install')
-class TestSaleMrpFlow(test_sale_mrp_flow.TestSaleMrpFlow):
+class TestSaleMrpFlow(test_sale_mrp_flow.TestSaleMrpFlowCommon):
 
     def test_kit_cost_calculation(self):
         """ Check that the average cost price is computed correctly after SO confirmation: