Sourced from simplecov's releases.

v0.21.0

The "Collate++" release making it more viable for big CI setups by limiting memory consumption. Also includes some nice new additions for branch coverage settings.

Enhancements

• Performance of SimpleCov.collate improved - it should both run faster and consume much less memory esp. when run with many files (memory consumption should not increase with number of files any more)
• Can now define the minimum_coverage_by_file, maximum_coverage_drop and refuse_coverage_drop by branch as well as line coverage. Thanks to @jemmaissroff
• Can set primary coverage to something other than line by setting primary_coverage :branch in SimpleCov Configuration. Thanks to @jemmaissroff

Misc

• reduce gem size by splitting Changelog into Changelog.md and a pre 0.18 Changelog.old.md, the latter of which is not included in the gem
• The interface of ResultMeger.merge_and_store is changed to support the collate performance improvements mentioned above. It's not considered an official API, hence this is not in the breaking section. For people using it to merge results from different machines, it's recommended to migrate to collate.

Sourced from simplecov's changelog.

0.21.0 (2021-01-03)

The "Collate++" release making it more viable for big CI setups by limiting memory consumption. Also includes some nice new additions for branch coverage settings.

Enhancements

• Performance of SimpleCov.collate improved - it should both run faster and consume much less memory esp. when run with many files (memory consumption should not increase with number of files any more)
• Can now define the minimum_coverage_by_file, maximum_coverage_drop and refuse_coverage_drop by branch as well as line coverage. Thanks to @jemmaissroff
• Can set primary coverage to something other than line by setting primary_coverage :branch in SimpleCov Configuration. Thanks to @jemmaissroff

Misc

• reduce gem size by splitting Changelog into Changelog.md and a pre 0.18 Changelog.old.md, the latter of which is not included in the gem
• The interface of ResultMeger.merge_and_store is changed to support the collate performance improvements mentioned above. It's not considered an official API, hence this is not in the breaking section. For people using it to merge results from different machines, it's recommended to migrate to collate.

0.20.0 (2020-11-29)

The "JSON formatter" release. Starting now a JSON formatter is included by default in the release. This is mostly done for Code Climate reasons, you can find more details in this issue. Shipping with so much by default is sub-optimal, we know. It's the long term plan to also provide simplecov-core without the HTML or JSON formatters for those who don't need them/for other formatters to rely on.

Enhancements

• simplecov_json_formatter included by default (docs), this should enable the Code Climate test reporter to work again once it's updated
• invalidate internal cache after switching SimpleCov.root, should help with some bugs

0.19.1 (2020-10-25)

Bugfixes

• No more warnings triggered by enable_for_subprocesses. Thanks to @mame
• Avoid trying to patch Process.fork when it isn't available. Thanks to @MSP-Greg

0.19.0 (2020-08-16)

Breaking Changes

• Dropped support for Ruby 2.4, it reached EOL

Enhancements

• observe forked processes (enable with SimpleCov.enable_for_subprocesses). See #881, thanks to @robotdana
• SimpleCov distinguishes better that it stopped processing because of a previous error vs. SimpleCov is the originator of said error due to coverage requirements.

Bugfixes

• Changing the SimpleCov.root combined with the root filtering didn't work. Now they do! Thanks to @deivid-rodriguez and see #894
• in parallel test execution it could happen that the last coverage result was written to disk when it didn't complete yet, changed to only write it once it's the final result
• if you run parallel tests only the final process will report violations of the configured test coverage, not all previous processes
• changed the parallel_tests merging mechanisms to do the waiting always in the last process, should reduce race conditions

Noteworthy

• The repo has moved to https://github.com/simplecov-ruby/simplecov - everything stays the same, redirects should work but you might wanna update anyhow

• 20af434 Release prep for 0.21.0 (#963)
• b95ce9a Enable and fix new cops
• 9cdc07b Upgrade rubocop and fix offenses
• 168f244 highlight why we can do result.to_hash.first
• 19d59bb Make collate able to ignore timeouts or not
• 20ddc38 Only synchronize resultset around read not whole result creation
• 04c3019 Explicitly make collate ignore the merge timeout
• 08d82c1 Restructure specs
• ed03db5 Improve performance of collate & reduce memorty consumption
• 0fe63fd minor gem updates (#961)
• Additional commits viewable in compare view

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