Explanation of Warnings From MRI's Test Suite

Blogged: Explanation of Warnings From MRI's Test Suite:

JRuby has, for some time now, run the same test suite as MRI (C Ruby, Matz's Ruby). Because not all tests pass, we use minitest-excludes to mask out the failures, and over time we unmask stuff as we fix it. However, there's a number of warnings we get from the suite that are nonfatal and unmaskable. I thought I'd show them to you and tell their stories. JRuby 1.9 mode only supports the `psych` YAML engine; ignoring `syck` When we started implementing support for the new "psych" YAML engine that Aaron Patterson created (atop libyaml) for Ruby 1.9, we decided that we would not support the broken "syck" engine anymore. The libyaml version is strictly YAML spec compliant, and this is our contribution to ridding the world of "syck"'s broken YAML forever. GC.stress= does nothing on JRuby JRuby does not have direct control over the JVM's GC, and so we can't implement things like ...

Full article: http://blog.headius.com/2012/09/explanation-of-warnings-f...