[macruby-changes] [MacRuby/MacRuby] 85fe95: StringIO#{each, readlines} will raise an ArgumentE...

[noreply at github.com]

Branch: refs/heads/master
Home:   https://github.com/MacRuby/MacRuby

Commit: 85fe9536b427cf0c92bf633836b604dc19c5f4a9
    https://github.com/MacRuby/MacRuby/commit/85fe9536b427cf0c92bf633836b604dc19c5f4a9
Author: Watson <watson1978 at gmail.com>
Date:   2011-04-09 (Sat, 09 Apr 2011)

Changed paths:
  M lib/stringio.rb

Log Message:
-----------
StringIO#{each, readlines} will raise an ArgumentError when was passed 0 to limit because limit 0 causes infinity loop.

Test Script:
{{{
require 'test/unit/assertions.rb'
include Test::Unit::Assertions
require 'stringio'

f = StringIO.new("foo\nbar\nbaz\n")
assert_raise(ArgumentError){ f.readlines(0) }
assert_raise(ArgumentError){ f.readlines("", 0) }
assert_raise(ArgumentError){ f.each_line(0){ }  }
assert_raise(ArgumentError){ f.each_line("", 0){ } }
assert_nothing_raised{ f.each_line(0) }

obj = Object.new
def obj.to_int; 0; end
assert_raise(ArgumentError){ f.readlines(obj) }

puts :ok
}}}