Christopher Speck 41f6c6ecb2 Update "arc diff" to amend non-head commits with Mercurial ... Summary: After `arc diff` creates a revision in Phabricator it amends the commit to include a link to the revision in the commit message. For Mercurial this is done with `hg commit --amend --logfile` however this will fail when trying to create a diff for a non-head commit. This updates `ArcanistMercurialAPI::amendCommit()` to allow amending a non-head commit in two ways, depending on whether `evolve` is in use: No evolve: 1. Rebasing the current commit onto the current commit's parent, using the new commit message 2. Rebasing all children + descendants of the current commit onto the new resulting commit 3. Stripping the original commit With evolve: 1. Amend the commit with `hg amend --logfile` 2. Run `hg evolve` to tidy up all commits Test Plan: I created 6 commits in a row placing a bookmark at commits 2 `bookmark1`, 4 `bookmark2`, and 6 `bookmark3`, and ensured I had `arc:bookmark` in my base ruleset. No evolve, non-head changeset: 1. I verified I did not have `evolve` enabled by running `hg debugextensions` and did not see `evolve` in the listed active extensions. 2. I updated to `bookmark1` and modified a file to leave a dirty working state. 3. I ran `arc diff` and when prompted to amend my changes I said "yes", and verified a phab revision was created properly. 4. I checked the status of my repository and verified it was still linear and the bookmarks pointed to the proper commits. 5. I ran `hg log -r bookmark1 --template {desc}` to view the full commit message and verified it contained both `Summary: ...` and `Differential Revision: https://...`. 6. I ran `hg diff -c bookmark1` and verified the changes for that commit included the changes I made in step 2. No evolve, head changeset: 1. I updated to `bookmark3` which is the head commit and modified a file to leave a dirty working state. 2. I ran `arc diff` and when prompted to amend my changes I said "yes", and verified a phab revision was created properly. 3. I checked the status of my repository and verified it was still linear and all the bookmarks pointed to the proper commits. 4. I ran `hg log -r bookmark3 --template {desc}` to view the full commit message and verified it contained both `Summary: ...` and `Differential Revision: https://...`. 5. I ran `hg diff -c bookmar3` and verified the changes for that commit included the changes I made in step 1. With evolve: 1. I enabled `evolve` and verified it was enabled by running `hg debugextensions` and saw `evolve` in the listed active extensions. 2. I updated to `bookmark2` and modified a file to leave a dirty working state. 3. I ran `arc diff` and when prompted to amend my changes I said "yes", and verified a phab revision was created properly. 4. I checked the status of my repository and verified it was still linear and all the bookmarks pointed to the proper commits. 5. I ran `hg log -r bookmark2 --template {desc}` to view the full commit message and verfieid it contained both `Summary: ...` and `Differential Revision: https://...`. 6. I ran `hg diff -c bookmark2` and verified the changes for that commit included the changes I made in step 2. Reviewers: #blessed_reviewers, epriestley Reviewed By: #blessed_reviewers, epriestley Subscribers: Korvin, epriestley Differential Revision: https://secure.phabricator.com/D21686		2021-07-20 16:55:27 -04:00
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arc-hg.py	Update "arc diff" to amend non-head commits with Mercurial	2021-07-20 16:55:27 -04:00