tools/fuzz.rb | 2 2 + 0 - 0 !
1 file changed, 2 insertions(+)

 fix shebang for fuzz.rb script file

tests/test_helper.rb | 3 0 + 3 - 0 !
1 file changed, 3 deletions(-)

 let debian/ruby-tests.rb handle the test suite loading

tests/ractor_test.rb | 2 2 + 0 - 0 !
1 file changed, 2 insertions(+)

 tests/ractor_test.rb: make assert_separately available

Require tests/lib/helper.rb to avoid:

NoMethodError: undefined method `assert_separately'