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Edit File: file_test.rbs

# 
# FileTest implements file test operations similar to those used in File::Stat.
# It exists as a standalone module, and its methods are also insinuated into the
# File class. (Note that this is not done by inclusion: the interpreter cheats).
#
module FileTest
  # 
  # Returns `true` if the named file is a block device.
  #
  # *file_name* can be an IO object.
  #
  def self?.blockdev?: (String | IO file_name) -> bool

# 
  # Returns `true` if the named file is a character device.
  #
  # *file_name* can be an IO object.
  #
  def self?.chardev?: (String | IO file_name) -> bool

# 
  # Returns `true` if the named file is a directory, or a symlink that points at a
  # directory, and `false` otherwise.
  #
  # *file_name* can be an IO object.
  #
  #     File.directory?(".")
  #
  def self?.directory?: (String | IO file_name) -> bool

# 
  # Returns `true` if the named file exists and has a zero size.
  #
  # *file_name* can be an IO object.
  #
  def self?.empty?: (String | IO file_name) -> bool

# 
  # Returns `true` if the named file is executable by the effective user and group
  # id of this process. See eaccess(3).
  #
  # Windows does not support execute permissions separately from read permissions.
  # On Windows, a file is only considered executable if it ends in .bat, .cmd,
  # .com, or .exe.
  #
  # Note that some OS-level security features may cause this to return true even
  # though the file is not executable by the effective user/group.
  #
  def self?.executable?: (String file_name) -> bool

# 
  # Returns `true` if the named file is executable by the real user and group id
  # of this process. See access(3).
  #
  # Windows does not support execute permissions separately from read permissions.
  # On Windows, a file is only considered executable if it ends in .bat, .cmd,
  # .com, or .exe.
  #
  # Note that some OS-level security features may cause this to return true even
  # though the file is not executable by the real user/group.
  #
  def self?.executable_real?: (String file_name) -> bool

# 
  # Return `true` if the named file exists.
  #
  # *file_name* can be an IO object.
  #
  # "file exists" means that stat() or fstat() system call is successful.
  #
  def self?.exist?: (String | IO file_name) -> bool

# 
  # Returns `true` if the named `file` exists and is a regular file.
  #
  # `file` can be an IO object.
  #
  # If the `file` argument is a symbolic link, it will resolve the symbolic link
  # and use the file referenced by the link.
  #
  def self?.file?: (String | IO file) -> bool

# 
  # Returns `true` if the named file exists and the effective group id of the
  # calling process is the owner of the file. Returns `false` on Windows.
  #
  # *file_name* can be an IO object.
  #
  def self?.grpowned?: (String | IO file_name) -> bool

# 
  # Returns `true` if the named files are identical.
  #
  # *file_1* and *file_2* can be an IO object.
  #
  #     open("a", "w") {}
  #     p File.identical?("a", "a")      #=> true
  #     p File.identical?("a", "./a")    #=> true
  #     File.link("a", "b")
  #     p File.identical?("a", "b")      #=> true
  #     File.symlink("a", "c")
  #     p File.identical?("a", "c")      #=> true
  #     open("d", "w") {}
  #     p File.identical?("a", "d")      #=> false
  #
  def self?.identical?: (String | IO file_1, String | IO file_2) -> bool

# 
  # Returns `true` if the named file exists and the effective used id of the
  # calling process is the owner of the file.
  #
  # *file_name* can be an IO object.
  #
  def self?.owned?: (String | IO file_name) -> bool

# 
  # Returns `true` if the named file is a pipe.
  #
  # *file_name* can be an IO object.
  #
  def self?.pipe?: (String | IO file_name) -> bool

# 
  # Returns `true` if the named file is readable by the effective user and group
  # id of this process. See eaccess(3).
  #
  # Note that some OS-level security features may cause this to return true even
  # though the file is not readable by the effective user/group.
  #
  def self?.readable?: (String file_name) -> bool

# 
  # Returns `true` if the named file is readable by the real user and group id of
  # this process. See access(3).
  #
  # Note that some OS-level security features may cause this to return true even
  # though the file is not readable by the real user/group.
  #
  def self?.readable_real?: (String file_name) -> bool

# 
  # Returns `true` if the named file has the setgid bit set.
  #
  # *file_name* can be an IO object.
  #
  def self?.setgid?: (String | IO file_name) -> bool

# 
  # Returns `true` if the named file has the setuid bit set.
  #
  # *file_name* can be an IO object.
  #
  def self?.setuid?: (String | IO file_name) -> bool

# 
  # Returns the size of `file_name`.
  #
  # *file_name* can be an IO object.
  #
  def self?.size: (String | IO file_name) -> Integer

# 
  # Returns `nil` if `file_name` doesn't exist or has zero size, the size of the
  # file otherwise.
  #
  # *file_name* can be an IO object.
  #
  def self?.size?: (String | IO file_name) -> Integer?

# 
  # Returns `true` if the named file is a socket.
  #
  # *file_name* can be an IO object.
  #
  def self?.socket?: (String | IO file_name) -> bool

# 
  # Returns `true` if the named file has the sticky bit set.
  #
  # *file_name* can be an IO object.
  #
  def self?.sticky?: (String | IO file_name) -> bool

# 
  # Returns `true` if the named file is a symbolic link.
  #
  def self?.symlink?: (String file_name) -> bool

# 
  # If *file_name* is readable by others, returns an integer representing the file
  # permission bits of *file_name*. Returns `nil` otherwise. The meaning of the
  # bits is platform dependent; on Unix systems, see `stat(2)`.
  #
  # *file_name* can be an IO object.
  #
  #     File.world_readable?("/etc/passwd")           #=> 420
  #     m = File.world_readable?("/etc/passwd")
  #     sprintf("%o", m)                              #=> "644"
  #
  def self?.world_readable?: (String | IO file_name) -> Integer?

# 
  # If *file_name* is writable by others, returns an integer representing the file
  # permission bits of *file_name*. Returns `nil` otherwise. The meaning of the
  # bits is platform dependent; on Unix systems, see `stat(2)`.
  #
  # *file_name* can be an IO object.
  #
  #     File.world_writable?("/tmp")                  #=> 511
  #     m = File.world_writable?("/tmp")
  #     sprintf("%o", m)                              #=> "777"
  #
  def self?.world_writable?: (String | IO file_name) -> Integer?

# 
  # Returns `true` if the named file is writable by the effective user and group
  # id of this process. See eaccess(3).
  #
  # Note that some OS-level security features may cause this to return true even
  # though the file is not writable by the effective user/group.
  #
  def self?.writable?: (String file_name) -> bool

# 
  # Returns `true` if the named file is writable by the real user and group id of
  # this process. See access(3).
  #
  # Note that some OS-level security features may cause this to return true even
  # though the file is not writable by the real user/group.
  #
  def self?.writable_real?: (String file_name) -> bool

# 
  # Returns `true` if the named file exists and has a zero size.
  #
  # *file_name* can be an IO object.
  #
  def self?.zero?: (String | IO file_name) -> bool
end

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