With #10186 now merged, the tag specific cellar information is being read by brew.
This PR (once merged) will start adding the cellar information for each tag instead
of having a single cellar line on the top of the bottle block.
Each new CI build in homebrew-core will slowly start migrating the cellar lines to
the right place. If keep-old is used, the old "all tag" cellar line is removed and
added to each tag.
- Extract the json reading from the json merging: it makes the code hard to understand.
This helps for the separation of concerns: the jsons are read in one method;
and merged in a second one
- Added a first test to check the merge function
No change in behaviour was done, this change is just there to increase code coverage
and to prepare for #9315
Integration tests are useful in detecting breakages but much slower so
let's only use one per command and install formula outside the
integration test framework (which is also slow).
