JZlibRubyGzipWriter doesn't handle nil arguments gracefully #1088
Description
this works on MRI
> Zlib::GzipWriter.new('works ONLY on MRI', nil, nil)
#<Zlib::GzipWriter:0xa42755c>but blows up on JRuby
> Zlib::GzipWriter.new('works ONLY on MRI', nil, nil)
TypeError: no implicit conversion from nil to integer
from org/jruby/ext/zlib/JZlibRubyGzipWriter.java:108:in `initialize'
from org/jruby/ext/zlib/JZlibRubyGzipWriter.java:49:in `new'
from (irb):2:in `evaluate'
from org/jruby/RubyKernel.java:1121:in `eval'
from org/jruby/RubyKernel.java:1517:in `loop'
from org/jruby/RubyKernel.java:1282:in `catch'
from org/jruby/RubyKernel.java:1282:in `catch'
from /home/gaurish/code/repo/jruby/bin/jirb:13:in `(root)'Why?
This is needed to get this failing test passing in rails. Also, I think its always a good practice to check for nil values & discard them instead of throwing an exception.
Tested on jruby-head