Allow for empty last_run files for parallel tests #533
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Hi there! Thanks for this great PR! :) Sorry that it took some time to respond, I took the liberty of merging your PR with current master and reopening it as #549! If I have comments I'll try to resolve them myself, so you don't have to get back into it after the time :) Thanks again 🎉 ⚡ |
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0.14.1 2017-03-18 ([changes](simplecov-ruby/simplecov@v0.14.0...v0.14.1)) ======== ## Bugfixes * Files that were skipped as a whole/had no relevant coverage could lead to Float errors. See [#564](simplecov-ruby/simplecov#564) (thanks to @stevehanson for the report in [#563](simplecov-ruby/simplecov#563)) 0.14.0 2017-03-15 ([changes](simplecov-ruby/simplecov@v0.13.0...v0.14.0)) ========== ## Enhancements * Officially support JRuby 9.1+ going forward (should also work with previous releases). See [#547](simplecov-ruby/simplecov#547) (ping @PragTob when encountering issues) * Add Channel group to Rails profile, when `ActionCable` is loaded. See [#492](simplecov-ruby/simplecov#492) (thanks @BenMorganIO) * Stop `extend`ing instances of `Array` and `Hash` during merging results avoiding problems frozen results while manually merging results. See [#558](simplecov-ruby/simplecov#558) (thanks @aroben) ## Bugfixes * Fix parallel_tests when a thread ends up running no tests. See [#533](simplecov-ruby/simplecov#533) (thanks @cshaffer) * Skip the `:nocov:` comments along with the code that they skip. See [#551](simplecov-ruby/simplecov#551) (thanks @ebiven) * Fix crash when Home environment variable is unset. See [#482](simplecov-ruby/simplecov#482) (thanks @waldyr) * Make track_files work again when explicitly setting it to nil. See [#463](simplecov-ruby/simplecov#463) (thanks @craiglittle) * Do not overwrite .last_run.json file when refuse_coverage_drop option is enabled and the coverage has dropped (lead to you being able to just rerun tests and everything was _fine_). See [#553](simplecov-ruby/simplecov#553) (thanks @Miloshes) 0.13.0 2016-01-25 ([changes](simplecov-ruby/simplecov@v0.12.0...v0.13.0)) ========== ## Enhancements * Faster run times when a very large number of files is loaded into SimpleCov. See [#520](simplecov-ruby/simplecov#520) (thanks @alyssais) * Only read in source code files that are actually used (faster when files are ignored etc.). See [#540](simplecov-ruby/simplecov#540) (tahks @yui-knk) ## Bugfixes * Fix merging of resultsets if a file is missing on one side. See [#513](simplecov-ruby/simplecov#513) (thanks @hanazuki) * Fix Ruby 2.4 deprecation warnings by using Integer instead of Fixnum. See [#523](simplecov-ruby/simplecov#523) (thanks @nobu) * Force Ruby 2 to json 2. See [dc7417d50](simplecov-ruby/simplecov@dc7417d) (thanks @amatsuda) * Various other gem dependency fixes for different gems on different ruby versions. (thanks @amatsuda)
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Fixes #410
When running tests in parallel using parallel_tests and parallel_tests-fine_grain_test sometimes one thread will be completely starved from running any tests which results in an empty last_run json file which blows up when collecting all the results. This PR makes it so we don't try to parse an empty string as json and instead return
nilas if the file wasn't there at all.Since there were no tests for
SimpleCov::LastRunI took the liberty of writing tests for everything including the change I made.