Fix submittabilty of merge commits that resolve conflicts

Since I41c3c4 [1], problemsForSubmittingChanges() is called for the case
of a merge commit. Beforehand, it was only called for topics. That
change caused the submit button to be greyed out as soon as one change
in the ChangeSet was not mergeable. The issue with that logic was that
merge commits who resolved conflicts at the end of a chain of changes
were considered not mergeable.

We now check if the patch set is mergeable as a whole, taking into
account whether or not there is a resolving merge.

Tests are written according to the setup proposed in [2] and another
test case proposed in this change's comments [3].

[1] https://gerrit-review.googlesource.com/#/c/69745/14
[2] https://groups.google.com/forum/#!msg/repo-discuss/g1cpsRgs2bo/fnrt9vkcDwAJ
[3] https://gerrit-review.googlesource.com/#/c/74461/

Bug: Issue 3811
Change-Id: I30f2f8a8eb573135d98ad5c65ed5b63cb1db5f4b
3 files changed
tree: 4173567001d784190d0b8e554bcaf1ac1cb03df0
  1. .settings/
  2. bucklets/
  3. contrib/
  4. Documentation/
  5. gerrit-acceptance-framework/
  6. gerrit-acceptance-tests/
  7. gerrit-antlr/
  8. gerrit-cache-h2/
  9. gerrit-common/
  10. gerrit-extension-api/
  11. gerrit-gpg/
  12. gerrit-gwtdebug/
  13. gerrit-gwtexpui/
  14. gerrit-gwtui/
  15. gerrit-gwtui-common/
  16. gerrit-httpd/
  17. gerrit-launcher/
  18. gerrit-lucene/
  19. gerrit-main/
  20. gerrit-oauth/
  21. gerrit-openid/
  22. gerrit-patch-commonsnet/
  23. gerrit-patch-jgit/
  24. gerrit-pgm/
  25. gerrit-plugin-api/
  26. gerrit-plugin-archetype/
  27. gerrit-plugin-gwt-archetype/
  28. gerrit-plugin-gwtui/
  29. gerrit-plugin-js-archetype/
  30. gerrit-prettify/
  31. gerrit-reviewdb/
  32. gerrit-server/
  33. gerrit-sshd/
  34. gerrit-util-cli/
  35. gerrit-util-http/
  36. gerrit-util-ssl/
  37. gerrit-war/
  38. lib/
  39. plugins/
  40. ReleaseNotes/
  41. tools/
  42. website/
  43. .buckconfig
  44. .buckversion
  45. .editorconfig
  46. .gitignore
  47. .gitmodules
  48. .mailmap
  49. .pydevproject
  50. .watchmanconfig
  51. BUCK
  52. COPYING
  53. INSTALL
  54. README.md
  55. SUBMITTING_PATCHES
  56. VERSION
README.md

Gerrit Code Review

Gerrit is a code review and project management tool for Git based projects.

Objective

Gerrit makes reviews easier by showing changes in a side-by-side display, and allowing inline comments to be added by any reviewer.

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