pkgsrc/devel/p5-Test-FailWarnings/DESCR

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This module hooks $SIG{__WARN__} and converts warnings to Test::More's
fail() calls. It is designed to be used with done_testing, when you don't
need to know the test count in advance.
Just as with Test::NoWarnings, this does not catch warnings if other things
localize $SIG{__WARN__}, as this is designed to catch unhandled warnings.