test_result: Tolerate "404 References for commit not found"

When a commit is no longer reachable from a branch, gitlab API does not
allow annotating the commit.

This happens quite often when we push force in the branch after test
result started to run on this branch.

/reviewed-on nexedi/erp5!972

bt5/erp5_test_result/DocumentTemplateItem/portal_components/document.erp5.GitlabRESTConnector.py

@@ -94,6 +94,14 @@ class GitlabRESTConnector(XMLObject):
           "name": name
       },
       timeout=5)
+
+    if response.status_code == requests.codes.not_found and\
+       response.json()['message'] == "404 References for commit Not Found":
+      # It can happen that commit is not found, for example when test start
+      # on a commit and later this commit is no longer reachable from any
+      # branch. This typically happen after a new commit was push-forced to
+      # the tested branch.
+      return
     response.raise_for_status()
 
 

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

@@ -1640,3 +1640,13 @@ class TestGitlabRESTConnectorInterface(ERP5TypeTestCase):
       self.test_result.start()
       self.tic()
 
+  def test_commit_not_found(self):
+    with responses.RequestsMock() as rsps:
+      rsps.add(
+          responses.POST,
+          self.post_commit_status_url,
+          json={"message": "404 References for commit Not Found"},
+          status=404)
+      self.test_result.start()
+      self.tic()
+