task distribution: avoid to reset reference on test suite if invalidated/revalidated

bt5/erp5_test_result/TestTemplateItem/portal_components/test.erp5.testTaskDistribution.py

@@ -164,6 +164,25 @@ class TestTaskDistribution(ERP5TypeTestCase):
     test_suite.invalidate()
     self.assertRaises(ValidationFailed, self.portal.portal_workflow.doActionFor, test_suite, 'validate_action')
 
+  def test_02c_checkTestSuiteReference(self):
+    """
+    Make sure validation of test suite generate a reference, and revalidating
+    a test suite should not change reference
+    """
+    test_suite, = self._createTestSuite()
+    self.assertTrue(test_suite.getReference() != None)
+    self.tic()
+    test_suite.invalidate()
+    self.tic()
+    test_suite.setReference(None)
+    test_suite.validate()
+    reference = test_suite.getReference()
+    self.assertTrue(reference != None)
+    test_suite.invalidate()
+    self.tic()
+    test_suite.validate()
+    self.assertEqual(reference, test_suite.getReference())
+
   def _callOptimizeAlarm(self):
     self.portal.portal_alarms.task_distributor_alarm_optimize.activeSense()
     self.tic()

bt5/erp5_test_result/WorkflowTemplateItem/portal_workflow/test_suite_workflow/scripts/TestSuite_afterValidate.py

@@ -13,8 +13,9 @@ def int2letter(i):
   d, m = divmod(i, 26)
   return int2letter(d - 1) + int2letter(m)
 
-new_id = portal.portal_ids.generateNewId(id_generator="uid", id_group="test_suite_reference")
-test_suite.setReference(int2letter(new_id))
+if test_suite.getReference() is None:
+  new_id = portal.portal_ids.generateNewId(id_generator="uid", id_group="test_suite_reference")
+  test_suite.setReference(int2letter(new_id))
 
 def generateRandomString(size):
   tab = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"