[Bugfix] CommitsSinceVersionSource decreases upon deleting a merged Release branch #1635
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Problem:
Upon deleting a merged
release
branch,CommitsSinceVersionSource
decreases as reported in issue #1526.Root Cause:
After the
release
branch is deleted, we have no way to calculate theBaseVersionSource
correctly from the existingBaseVersion
calculation strategies.Assumptions:
release
branch was merged using the--no-ff
policy.Merge branch
andrelease
keywords.Fix:
The intuition behind the fix is that if a
release
branch was merged with the stated assumptions and deleted, then theBaseVersionSource
calculated byMergeMessageBaseVersionStrategy
is updated to point to themerge-base
of the parents of the merge commit. The existing code then calculates theCommitsSinceVersionSource
correctly.