git-cl upload: adjust code-review score on TBR.

Since git-cl TBR always sets +1, it does not allow auto-submit where
using +2 score as approval.  Let me make git-cl automatically adjust
to proper score.

Bug: 762425
Change-Id: I71fe1af1b8bf5e68d2509c60e8bf05024b6bdbb7
Reviewed-on: https://chromium-review.googlesource.com/680717
Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
Commit-Queue: Yoshisato Yanagisawa <yyanagisawa@chromium.org>

git_cl.py

@@ -149,7 +149,7 @@ def RunGitWithCode(args, suppress_stderr=False):
                                              stderr=stderr)
     return code, out
   except subprocess2.CalledProcessError as e:
-    logging.debug('Failed running %s', args)
+    logging.debug('Failed running %s', ['git'] + args)
     return e.returncode, e.stdout
 
 
@@ -3116,10 +3116,15 @@ class _GerritChangelistImpl(_ChangelistCodereviewBase):
         notify=bool(options.send_mail))
 
     if change_desc.get_reviewers(tbr_only=True):
-      print('Adding self-LGTM (Code-Review +1) because of TBRs.')
+      labels = self._GetChangeDetail(['LABELS']).get('labels', {})
+      score = 1
+      if 'Code-Review' in labels and 'values' in labels['Code-Review']:
+        score = max([int(x) for x in labels['Code-Review']['values'].keys()])
+      print('Adding self-LGTM (Code-Review +%d) because of TBRs.' % score)
       gerrit_util.SetReview(
           self._GetGerritHost(), self.GetIssue(),
-          msg='Self-approving for TBR', labels={'Code-Review': 1})
+          msg='Self-approving for TBR',
+          labels={'Code-Review': score})
 
     return 0
 

tests/git_cl_test.py

@@ -1617,9 +1617,24 @@ class TestGitCl(TestCase):
     ]
     if tbr:
       calls += [
+        (('GetChangeDetail', 'chromium-review.googlesource.com', '123456',
+          ['LABELS']), {
+             'labels': {
+                 'Code-Review': {
+                     'default_value': 0,
+                     'all': [],
+                     'values': {
+                         '+2': 'lgtm, approved',
+                         '+1': 'lgtm, but someone else must approve',
+                         ' 0': 'No score',
+                         '-1': 'Don\'t submit as-is',
+                     }
+                 }
+              }
+          }),
         (('SetReview', 'chromium-review.googlesource.com',
           123456 if squash else None, 'Self-approving for TBR',
-          {'Code-Review': 1}, None), ''),
+          {'Code-Review': 2}, None), ''),
       ]
     calls += cls._git_post_upload_calls()
     return calls
@@ -1743,10 +1758,9 @@ class TestGitCl(TestCase):
         [],
         'desc\nTBR=reviewer@example.com\nBUG=\nR=another@example.com\n'
         'CC=more@example.com,people@example.com\n\n'
-        'Change-Id: 123456789\n',
+        'Change-Id: 123456789',
         ['reviewer@example.com', 'another@example.com'],
-        squash=False,
+        expected_upstream_ref='origin/master',
-        squash_mode='override_nosquash',
         cc=['more@example.com', 'people@example.com'],
         tbr='reviewer@example.com')