Additional test cases on Integer#chr regarding invalid codepoints.
Additional test cases on Integer#chr regarding invalid codepoints.

Additional tests have been written to ensure RangeError is raised on
a selection of invalid codepoints from UTF-8 and UTF-16.

nobu/rubyspec,iliabylich/rubyspec,askl56/rubyspec,alexch/rubyspec,eregon/rubyspec,ruby/spec,bl4ckdu5t/rubyspec,yous/rubyspec,yous/rubyspec,DawidJanczak/rubyspec,ruby/spec,askl56/rubyspec,BanzaiMan/rubyspec,BanzaiMan/rubyspec,ruby/spec,kachick/rubyspec,benlovell/rubyspec,DavidEGrayson/rubyspec,kidaa/rubyspec,lucaspinto/rubyspec,chesterbr/rubyspec,Aesthetikx/rubyspec,ruby/rubyspec,sgarciac/spec,jannishuebl/rubyspec,chesterbr/rubyspec,ruby/rubyspec,DawidJanczak/rubyspec,wied03/rubyspec,eregon/rubyspec,kachick/rubyspec,jannishuebl/rubyspec,eregon/rubyspec,kachick/rubyspec,Aesthetikx/rubyspec,benlovell/rubyspec,saturnflyer/rubyspec,sgarciac/spec,alexch/rubyspec,yaauie/rubyspec,wied03/rubyspec,DavidEGrayson/rubyspec,nobu/rubyspec,lucaspinto/rubyspec,saturnflyer/rubyspec,wied03/rubyspec,iliabylich/rubyspec,nobu/rubyspec,yaauie/rubyspec,kidaa/rubyspec,bl4ckdu5t/rubyspec,sgarciac/spec