FileTest methods not showing up in File.singleton_methods
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Key: JRUBY-5276
URL: http://jira.codehaus.org/browse/JRUBY-5276
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.5.6
Environment: "jruby 1.5.6 (ruby 1.8.7 patchlevel 249) (2010-12-24
6586) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_22) [x86_64-java]"
Reporter: rubyfan1
File.directory? and other singleton methods don't show up in JRuby
in File.singleton_methods(false), but do in MRI 1.8.7.
The methods work, they just aren't visible.
I found this when I was doing some metaprogramming with the File class.
> irb
>> RUBY_DESCRIPTION
=> "ruby 1.8.7 (2009-06-12 patchlevel 174) [universal-darwin10.0]"
>> File.open("/tmp/187_methods", "w") do |file|
?> file.write(File.singleton_methods(false).sort.join(","));
?> end
=> 411
>> quit
> ./jirb
irb(main):001:0> irb_methods = File.read("/tmp/187_methods").split(",")
=> ["atime", "basename", "blockdev?", "chardev?", "chmod", "chown", "ctime",
"delete", "directory?", "dirname", "executable?", "executable_real?", "exist?",
"exists?", "expand_path", "extname", "file?", "fnmatch", "fnmatch?", "ftype",
"grpowned?", "identical?", "join", "lchmod", "lchown", "link", "lstat",
"mtime", "owned?", "pipe?", "readable?", "readable_real?", "readlink",
"rename", "setgid?", "setuid?", "size", "size?", "socket?", "split", "stat",
"sticky?", "symlink", "symlink?", "truncate", "umask", "unlink", "utime",
"writable?", "writable_real?", "zero?"]
irb(main):002:0> irb_methods.each do |method|
irb(main):003:1* unless (File.singleton_methods(false).include?(method))
irb(main):004:2> puts "missing #{method}, respond_to?
#{File.respond_to?(method)}";
irb(main):005:2* end
irb(main):006:1> end
missing blockdev?, respond_to? true
missing chardev?, respond_to? true
missing directory?, respond_to? true
missing executable?, respond_to? true
missing executable_real?, respond_to? true
missing exist?, respond_to? true
missing exists?, respond_to? true
missing file?, respond_to? true
missing grpowned?, respond_to? true
missing identical?, respond_to? true
missing owned?, respond_to? true
missing pipe?, respond_to? true
missing readable?, respond_to? true
missing readable_real?, respond_to? true
missing setgid?, respond_to? true
missing setuid?, respond_to? true
missing size, respond_to? true
missing size?, respond_to? true
missing socket?, respond_to? true
missing sticky?, respond_to? true
missing symlink?, respond_to? true
missing writable?, respond_to? true
missing writable_real?, respond_to? true
missing zero?, respond_to? true
=> ["atime", "basename", "blockdev?", "chardev?", "chmod", "chown", "ctime",
"delete", "directory?", "dirname", "executable?", "executable_real?", "exist?",
"exists?", "expand_path", "extname", "file?", "fnmatch", "fnmatch?", "ftype",
"grpowned?", "identical?", "join", "lchmod", "lchown", "link", "lstat",
"mtime", "owned?", "pipe?", "readable?", "readable_real?", "readlink",
"rename", "setgid?", "setuid?", "size", "size?", "socket?", "split", "stat",
"sticky?", "symlink", "symlink?", "truncate", "umask", "unlink", "utime",
"writable?", "writable_real?", "zero?"]
irb(main):007:0>
irb(main):008:0* File.singleton_methods(false).sort.each do |method|
irb(main):009:1* unless (irb_methods.include?(method))
irb(main):010:2> puts "extra #{method}";
irb(main):011:2* end
irb(main):012:1> end
=> ["atime", "basename", "chmod", "chown", "ctime", "delete", "dirname",
"expand_path", "extname", "fnmatch", "fnmatch?", "ftype", "join", "lchmod",
"lchown", "link", "lstat", "mtime", "readlink", "rename", "split", "stat",
"symlink", "truncate", "umask", "unlink", "utime"]
irb(main):013:0> RUBY_DESCRIPTION
=> "jruby 1.5.6 (ruby 1.8.7 patchlevel 249) (2010-12-24 6586) (Java HotSpot(TM)
64-Bit Server VM 1.6.0_22) [x86_64-java]"
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