Fresh start

1 files changed, 1389 insertions, 0 deletions

diff --git a/jni/ruby/test/pathname/test_pathname.rb b/jni/ruby/test/pathname/test_pathname.rb
new file mode 100644
index 0000000..046f3f0
--- /dev/null
+++ b/jni/ruby/test/pathname/test_pathname.rb
@@ -0,0 +1,1389 @@
+require 'test/unit'
+require 'pathname'
+
+require 'fileutils'
+require 'tmpdir'
+require 'enumerator'
+
+
+class TestPathname < Test::Unit::TestCase
+  def self.define_assertion(name, linenum, &block)
+    name = "test_#{name}_#{linenum}"
+    define_method(name, &block)
+  end
+
+  def self.get_linenum
+    if /:(\d+):/ =~ caller[1]
+      $1.to_i
+    else
+      nil
+    end
+  end
+
+  def self.defassert(name, result, *args)
+    define_assertion(name, get_linenum) {
+      mesg = "#{name}(#{args.map {|a| a.inspect }.join(', ')})"
+      assert_nothing_raised(mesg) {
+        assert_equal(result, self.send(name, *args), mesg)
+      }
+    }
+  end
+
+  def self.defassert_raise(name, exc, *args)
+    define_assertion(name, get_linenum) {
+      message = "#{name}(#{args.map {|a| a.inspect }.join(', ')})"
+      assert_raise(exc, message) { self.send(name, *args) }
+    }
+  end
+
+  DOSISH = File::ALT_SEPARATOR != nil
+  DOSISH_DRIVE_LETTER = File.dirname("A:") == "A:."
+  DOSISH_UNC = File.dirname("//") == "//"
+
+  def cleanpath_aggressive(path)
+    Pathname.new(path).cleanpath.to_s
+  end
+
+  defassert(:cleanpath_aggressive, '/',       '/')
+  defassert(:cleanpath_aggressive, '.',       '')
+  defassert(:cleanpath_aggressive, '.',       '.')
+  defassert(:cleanpath_aggressive, '..',      '..')
+  defassert(:cleanpath_aggressive, 'a',       'a')
+  defassert(:cleanpath_aggressive, '/',       '/.')
+  defassert(:cleanpath_aggressive, '/',       '/..')
+  defassert(:cleanpath_aggressive, '/a',      '/a')
+  defassert(:cleanpath_aggressive, '.',       './')
+  defassert(:cleanpath_aggressive, '..',      '../')
+  defassert(:cleanpath_aggressive, 'a',       'a/')
+  defassert(:cleanpath_aggressive, 'a/b',     'a//b')
+  defassert(:cleanpath_aggressive, 'a',       'a/.')
+  defassert(:cleanpath_aggressive, 'a',       'a/./')
+  defassert(:cleanpath_aggressive, '.',       'a/..')
+  defassert(:cleanpath_aggressive, '.',       'a/../')
+  defassert(:cleanpath_aggressive, '/a',      '/a/.')
+  defassert(:cleanpath_aggressive, '..',      './..')
+  defassert(:cleanpath_aggressive, '..',      '../.')
+  defassert(:cleanpath_aggressive, '..',      './../')
+  defassert(:cleanpath_aggressive, '..',      '.././')
+  defassert(:cleanpath_aggressive, '/',       '/./..')
+  defassert(:cleanpath_aggressive, '/',       '/../.')
+  defassert(:cleanpath_aggressive, '/',       '/./../')
+  defassert(:cleanpath_aggressive, '/',       '/.././')
+  defassert(:cleanpath_aggressive, 'a/b/c',   'a/b/c')
+  defassert(:cleanpath_aggressive, 'b/c',     './b/c')
+  defassert(:cleanpath_aggressive, 'a/c',     'a/./c')
+  defassert(:cleanpath_aggressive, 'a/b',     'a/b/.')
+  defassert(:cleanpath_aggressive, '.',       'a/../.')
+  defassert(:cleanpath_aggressive, '/a',      '/../.././../a')
+  defassert(:cleanpath_aggressive, '../../d', 'a/b/../../../../c/../d')
+
+  if DOSISH_UNC
+    defassert(:cleanpath_aggressive, '//a/b/c', '//a/b/c/')
+  else
+    defassert(:cleanpath_aggressive, '/',       '///')
+    defassert(:cleanpath_aggressive, '/a',      '///a')
+    defassert(:cleanpath_aggressive, '/',       '///..')
+    defassert(:cleanpath_aggressive, '/',       '///.')
+    defassert(:cleanpath_aggressive, '/',       '///a/../..')
+  end
+
+  if DOSISH
+    defassert(:cleanpath_aggressive, 'c:/foo/bar', 'c:\\foo\\bar')
+  end
+
+  def cleanpath_conservative(path)
+    Pathname.new(path).cleanpath(true).to_s
+  end
+
+  defassert(:cleanpath_conservative, '/',      '/')
+  defassert(:cleanpath_conservative, '.',      '')
+  defassert(:cleanpath_conservative, '.',      '.')
+  defassert(:cleanpath_conservative, '..',     '..')
+  defassert(:cleanpath_conservative, 'a',      'a')
+  defassert(:cleanpath_conservative, '/',      '/.')
+  defassert(:cleanpath_conservative, '/',      '/..')
+  defassert(:cleanpath_conservative, '/a',     '/a')
+  defassert(:cleanpath_conservative, '.',      './')
+  defassert(:cleanpath_conservative, '..',     '../')
+  defassert(:cleanpath_conservative, 'a/',     'a/')
+  defassert(:cleanpath_conservative, 'a/b',    'a//b')
+  defassert(:cleanpath_conservative, 'a/.',    'a/.')
+  defassert(:cleanpath_conservative, 'a/.',    'a/./')
+  defassert(:cleanpath_conservative, 'a/..',   'a/../')
+  defassert(:cleanpath_conservative, '/a/.',   '/a/.')
+  defassert(:cleanpath_conservative, '..',     './..')
+  defassert(:cleanpath_conservative, '..',     '../.')
+  defassert(:cleanpath_conservative, '..',     './../')
+  defassert(:cleanpath_conservative, '..',     '.././')
+  defassert(:cleanpath_conservative, '/',      '/./..')
+  defassert(:cleanpath_conservative, '/',      '/../.')
+  defassert(:cleanpath_conservative, '/',      '/./../')
+  defassert(:cleanpath_conservative, '/',      '/.././')
+  defassert(:cleanpath_conservative, 'a/b/c',  'a/b/c')
+  defassert(:cleanpath_conservative, 'b/c',    './b/c')
+  defassert(:cleanpath_conservative, 'a/c',    'a/./c')
+  defassert(:cleanpath_conservative, 'a/b/.',  'a/b/.')
+  defassert(:cleanpath_conservative, 'a/..',   'a/../.')
+  defassert(:cleanpath_conservative, '/a',     '/../.././../a')
+  defassert(:cleanpath_conservative, 'a/b/../../../../c/../d', 'a/b/../../../../c/../d')
+
+  if DOSISH
+    defassert(:cleanpath_conservative, 'c:/foo/bar', 'c:\\foo\\bar')
+  end
+
+  if DOSISH_UNC
+    defassert(:cleanpath_conservative, '//',     '//')
+  else
+    defassert(:cleanpath_conservative, '/',      '//')
+  end
+
+  # has_trailing_separator?(path) -> bool
+  def has_trailing_separator?(path)
+    Pathname.allocate.__send__(:has_trailing_separator?, path)
+  end
+
+  defassert(:has_trailing_separator?, false, "/")
+  defassert(:has_trailing_separator?, false, "///")
+  defassert(:has_trailing_separator?, false, "a")
+  defassert(:has_trailing_separator?, true, "a/")
+
+  def add_trailing_separator(path)
+    Pathname.allocate.__send__(:add_trailing_separator, path)
+  end
+
+  def del_trailing_separator(path)
+    Pathname.allocate.__send__(:del_trailing_separator, path)
+  end
+
+  defassert(:del_trailing_separator, "/", "/")
+  defassert(:del_trailing_separator, "/a", "/a")
+  defassert(:del_trailing_separator, "/a", "/a/")
+  defassert(:del_trailing_separator, "/a", "/a//")
+  defassert(:del_trailing_separator, ".", ".")
+  defassert(:del_trailing_separator, ".", "./")
+  defassert(:del_trailing_separator, ".", ".//")
+
+  if DOSISH_DRIVE_LETTER
+    defassert(:del_trailing_separator, "A:", "A:")
+    defassert(:del_trailing_separator, "A:/", "A:/")
+    defassert(:del_trailing_separator, "A:/", "A://")
+    defassert(:del_trailing_separator, "A:.", "A:.")
+    defassert(:del_trailing_separator, "A:.", "A:./")
+    defassert(:del_trailing_separator, "A:.", "A:.//")
+  end
+
+  if DOSISH_UNC
+    defassert(:del_trailing_separator, "//", "//")
+    defassert(:del_trailing_separator, "//a", "//a")
+    defassert(:del_trailing_separator, "//a", "//a/")
+    defassert(:del_trailing_separator, "//a", "//a//")
+    defassert(:del_trailing_separator, "//a/b", "//a/b")
+    defassert(:del_trailing_separator, "//a/b", "//a/b/")
+    defassert(:del_trailing_separator, "//a/b", "//a/b//")
+    defassert(:del_trailing_separator, "//a/b/c", "//a/b/c")
+    defassert(:del_trailing_separator, "//a/b/c", "//a/b/c/")
+    defassert(:del_trailing_separator, "//a/b/c", "//a/b/c//")
+  else
+    defassert(:del_trailing_separator, "/", "///")
+    defassert(:del_trailing_separator, "///a", "///a/")
+  end
+
+  if DOSISH
+    defassert(:del_trailing_separator, "a", "a\\")
+    defassert(:del_trailing_separator, "\225\\".force_encoding("cp932"), "\225\\\\".force_encoding("cp932"))
+    defassert(:del_trailing_separator, "\225".force_encoding("cp437"), "\225\\\\".force_encoding("cp437"))
+  end
+
+  def test_plus
+    assert_kind_of(Pathname, Pathname("a") + Pathname("b"))
+  end
+
+  def plus(path1, path2) # -> path
+    (Pathname.new(path1) + Pathname.new(path2)).to_s
+  end
+
+  defassert(:plus, '/', '/', '/')
+  defassert(:plus, 'a/b', 'a', 'b')
+  defassert(:plus, 'a', 'a', '.')
+  defassert(:plus, 'b', '.', 'b')
+  defassert(:plus, '.', '.', '.')
+  defassert(:plus, '/b', 'a', '/b')
+
+  defassert(:plus, '/', '/', '..')
+  defassert(:plus, '.', 'a', '..')
+  defassert(:plus, 'a', 'a/b', '..')
+  defassert(:plus, '../..', '..', '..')
+  defassert(:plus, '/c', '/', '../c')
+  defassert(:plus, 'c', 'a', '../c')
+  defassert(:plus, 'a/c', 'a/b', '../c')
+  defassert(:plus, '../../c', '..', '../c')
+
+  defassert(:plus, 'a//b/d//e', 'a//b/c', '../d//e')
+
+  def test_slash
+    assert_kind_of(Pathname, Pathname("a") / Pathname("b"))
+  end
+
+  def test_parent
+    assert_equal(Pathname("."), Pathname("a").parent)
+  end
+
+  def parent(path) # -> path
+    Pathname.new(path).parent.to_s
+  end
+
+  defassert(:parent, '/', '/')
+  defassert(:parent, '/', '/a')
+  defassert(:parent, '/a', '/a/b')
+  defassert(:parent, '/a/b', '/a/b/c')
+  defassert(:parent, '.', 'a')
+  defassert(:parent, 'a', 'a/b')
+  defassert(:parent, 'a/b', 'a/b/c')
+  defassert(:parent, '..', '.')
+  defassert(:parent, '../..', '..')
+
+  def test_join
+    r = Pathname("a").join(Pathname("b"), Pathname("c"))
+    assert_equal(Pathname("a/b/c"), r)
+    r = Pathname("/a").join(Pathname("b"), Pathname("c"))
+    assert_equal(Pathname("/a/b/c"), r)
+    r = Pathname("/a").join(Pathname("/b"), Pathname("c"))
+    assert_equal(Pathname("/b/c"), r)
+    r = Pathname("/a").join(Pathname("/b"), Pathname("/c"))
+    assert_equal(Pathname("/c"), r)
+    r = Pathname("/a").join("/b", "/c")
+    assert_equal(Pathname("/c"), r)
+    r = Pathname("/foo/var").join()
+    assert_equal(Pathname("/foo/var"), r)
+  end
+
+  def test_absolute
+    assert_equal(true, Pathname("/").absolute?)
+    assert_equal(false, Pathname("a").absolute?)
+  end
+
+  def relative?(path)
+    Pathname.new(path).relative?
+  end
+
+  defassert(:relative?, false, '/')
+  defassert(:relative?, false, '/a')
+  defassert(:relative?, false, '/..')
+  defassert(:relative?, true, 'a')
+  defassert(:relative?, true, 'a/b')
+
+  if DOSISH_DRIVE_LETTER
+    defassert(:relative?, false, 'A:')
+    defassert(:relative?, false, 'A:/')
+    defassert(:relative?, false, 'A:/a')
+  end
+
+  if File.dirname('//') == '//'
+    defassert(:relative?, false, '//')
+    defassert(:relative?, false, '//a')
+    defassert(:relative?, false, '//a/')
+    defassert(:relative?, false, '//a/b')
+    defassert(:relative?, false, '//a/b/')
+    defassert(:relative?, false, '//a/b/c')
+  end
+
+  def relative_path_from(dest_directory, base_directory)
+    Pathname.new(dest_directory).relative_path_from(Pathname.new(base_directory)).to_s
+  end
+
+  defassert(:relative_path_from, "../a", "a", "b")
+  defassert(:relative_path_from, "../a", "a", "b/")
+  defassert(:relative_path_from, "../a", "a/", "b")
+  defassert(:relative_path_from, "../a", "a/", "b/")
+  defassert(:relative_path_from, "../a", "/a", "/b")
+  defassert(:relative_path_from, "../a", "/a", "/b/")
+  defassert(:relative_path_from, "../a", "/a/", "/b")
+  defassert(:relative_path_from, "../a", "/a/", "/b/")
+
+  defassert(:relative_path_from, "../b", "a/b", "a/c")
+  defassert(:relative_path_from, "../a", "../a", "../b")
+
+  defassert(:relative_path_from, "a", "a", ".")
+  defassert(:relative_path_from, "..", ".", "a")
+
+  defassert(:relative_path_from, ".", ".", ".")
+  defassert(:relative_path_from, ".", "..", "..")
+  defassert(:relative_path_from, "..", "..", ".")
+
+  defassert(:relative_path_from, "c/d", "/a/b/c/d", "/a/b")
+  defassert(:relative_path_from, "../..", "/a/b", "/a/b/c/d")
+  defassert(:relative_path_from, "../../../../e", "/e", "/a/b/c/d")
+  defassert(:relative_path_from, "../b/c", "a/b/c", "a/d")
+
+  defassert(:relative_path_from, "../a", "/../a", "/b")
+  defassert(:relative_path_from, "../../a", "../a", "b")
+  defassert(:relative_path_from, ".", "/a/../../b", "/b")
+  defassert(:relative_path_from, "..", "a/..", "a")
+  defassert(:relative_path_from, ".", "a/../b", "b")
+
+  defassert(:relative_path_from, "a", "a", "b/..")
+  defassert(:relative_path_from, "b/c", "b/c", "b/..")
+
+  defassert_raise(:relative_path_from, ArgumentError, "/", ".")
+  defassert_raise(:relative_path_from, ArgumentError, ".", "/")
+  defassert_raise(:relative_path_from, ArgumentError, "a", "..")
+  defassert_raise(:relative_path_from, ArgumentError, ".", "..")
+
+  def with_tmpchdir(base=nil)
+    Dir.mktmpdir(base) {|d|
+      d = Pathname.new(d).realpath.to_s
+      Dir.chdir(d) {
+        yield d
+      }
+    }
+  end
+
+  def has_symlink?
+    begin
+      File.symlink(nil, nil)
+    rescue NotImplementedError
+      return false
+    rescue TypeError
+    end
+    return true
+  end
+
+  def realpath(path, basedir=nil)
+    Pathname.new(path).realpath(basedir).to_s
+  end
+
+  def test_realpath
+    return if !has_symlink?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      assert_raise(Errno::ENOENT) { realpath("#{dir}/not-exist") }
+      File.symlink("not-exist-target", "#{dir}/not-exist")
+      assert_raise(Errno::ENOENT) { realpath("#{dir}/not-exist") }
+
+      File.symlink("loop", "#{dir}/loop")
+      assert_raise(Errno::ELOOP) { realpath("#{dir}/loop") }
+      assert_raise(Errno::ELOOP) { realpath("#{dir}/loop", dir) }
+
+      File.symlink("../#{File.basename(dir)}/./not-exist-target", "#{dir}/not-exist2")
+      assert_raise(Errno::ENOENT) { realpath("#{dir}/not-exist2") }
+
+      File.open("#{dir}/exist-target", "w") {}
+      File.symlink("../#{File.basename(dir)}/./exist-target", "#{dir}/exist2")
+      assert_nothing_raised { realpath("#{dir}/exist2") }
+
+      File.symlink("loop-relative", "loop-relative")
+      assert_raise(Errno::ELOOP) { realpath("#{dir}/loop-relative") }
+
+      Dir.mkdir("exist")
+      assert_equal("#{dir}/exist", realpath("exist"))
+      assert_raise(Errno::ELOOP) { realpath("../loop", "#{dir}/exist") }
+
+      File.symlink("loop1/loop1", "loop1")
+      assert_raise(Errno::ELOOP) { realpath("#{dir}/loop1") }
+
+      File.symlink("loop2", "loop3")
+      File.symlink("loop3", "loop2")
+      assert_raise(Errno::ELOOP) { realpath("#{dir}/loop2") }
+
+      Dir.mkdir("b")
+
+      File.symlink("b", "c")
+      assert_equal("#{dir}/b", realpath("c"))
+      assert_equal("#{dir}/b", realpath("c/../c"))
+      assert_equal("#{dir}/b", realpath("c/../c/../c/."))
+
+      File.symlink("..", "b/d")
+      assert_equal("#{dir}/b", realpath("c/d/c/d/c"))
+
+      File.symlink("#{dir}/b", "e")
+      assert_equal("#{dir}/b", realpath("e"))
+
+      Dir.mkdir("f")
+      Dir.mkdir("f/g")
+      File.symlink("f/g", "h")
+      assert_equal("#{dir}/f/g", realpath("h"))
+      File.chmod(0000, "f")
+      assert_raise(Errno::EACCES) { realpath("h") }
+      File.chmod(0755, "f")
+    }
+  end
+
+  def realdirpath(path)
+    Pathname.new(path).realdirpath.to_s
+  end
+
+  def test_realdirpath
+    return if !has_symlink?
+    Dir.mktmpdir('rubytest-pathname') {|dir|
+      rdir = realpath(dir)
+      assert_equal("#{rdir}/not-exist", realdirpath("#{dir}/not-exist"))
+      assert_raise(Errno::ENOENT) { realdirpath("#{dir}/not-exist/not-exist-child") }
+      File.symlink("not-exist-target", "#{dir}/not-exist")
+      assert_equal("#{rdir}/not-exist-target", realdirpath("#{dir}/not-exist"))
+      File.symlink("../#{File.basename(dir)}/./not-exist-target", "#{dir}/not-exist2")
+      assert_equal("#{rdir}/not-exist-target", realdirpath("#{dir}/not-exist2"))
+      File.open("#{dir}/exist-target", "w") {}
+      File.symlink("../#{File.basename(dir)}/./exist-target", "#{dir}/exist")
+      assert_equal("#{rdir}/exist-target", realdirpath("#{dir}/exist"))
+      File.symlink("loop", "#{dir}/loop")
+      assert_raise(Errno::ELOOP) { realdirpath("#{dir}/loop") }
+    }
+  end
+
+  def descend(path)
+    Pathname.new(path).enum_for(:descend).map {|v| v.to_s }
+  end
+
+  defassert(:descend, %w[/ /a /a/b /a/b/c], "/a/b/c")
+  defassert(:descend, %w[a a/b a/b/c], "a/b/c")
+  defassert(:descend, %w[. ./a ./a/b ./a/b/c], "./a/b/c")
+  defassert(:descend, %w[a/], "a/")
+
+  def ascend(path)
+    Pathname.new(path).enum_for(:ascend).map {|v| v.to_s }
+  end
+
+  defassert(:ascend, %w[/a/b/c /a/b /a /], "/a/b/c")
+  defassert(:ascend, %w[a/b/c a/b a], "a/b/c")
+  defassert(:ascend, %w[./a/b/c ./a/b ./a .], "./a/b/c")
+  defassert(:ascend, %w[a/], "a/")
+
+  def test_initialize
+    p1 = Pathname.new('a')
+    assert_equal('a', p1.to_s)
+    p2 = Pathname.new(p1)
+    assert_equal(p1, p2)
+  end
+
+  def test_initialize_nul
+    assert_raise(ArgumentError) { Pathname.new("a\0") }
+  end
+
+  class AnotherStringLike # :nodoc:
+    def initialize(s) @s = s end
+    def to_str() @s end
+    def ==(other) @s == other end
+  end
+
+  def test_equality
+    obj = Pathname.new("a")
+    str = "a"
+    sym = :a
+    ano = AnotherStringLike.new("a")
+    assert_equal(false, obj == str)
+    assert_equal(false, str == obj)
+    assert_equal(false, obj == ano)
+    assert_equal(false, ano == obj)
+    assert_equal(false, obj == sym)
+    assert_equal(false, sym == obj)
+
+    obj2 = Pathname.new("a")
+    assert_equal(true, obj == obj2)
+    assert_equal(true, obj === obj2)
+    assert_equal(true, obj.eql?(obj2))
+  end
+
+  def test_hashkey
+    h = {}
+    h[Pathname.new("a")] = 1
+    h[Pathname.new("a")] = 2
+    assert_equal(1, h.size)
+  end
+
+  def assert_pathname_cmp(e, s1, s2)
+    p1 = Pathname.new(s1)
+    p2 = Pathname.new(s2)
+    r = p1 <=> p2
+    assert(e == r,
+      "#{p1.inspect} <=> #{p2.inspect}: <#{e}> expected but was <#{r}>")
+  end
+  def test_comparison
+    assert_pathname_cmp( 0, "a", "a")
+    assert_pathname_cmp( 1, "b", "a")
+    assert_pathname_cmp(-1, "a", "b")
+    ss = %w(
+      a
+      a/
+      a/b
+      a.
+      a0
+    )
+    s1 = ss.shift
+    ss.each {|s2|
+      assert_pathname_cmp(-1, s1, s2)
+      s1 = s2
+    }
+  end
+
+  def test_comparison_string
+    assert_equal(nil, Pathname.new("a") <=> "a")
+    assert_equal(nil, "a" <=> Pathname.new("a"))
+  end
+
+  def pathsub(path, pat, repl) Pathname.new(path).sub(pat, repl).to_s end
+  defassert(:pathsub, "a.o", "a.c", /\.c\z/, ".o")
+
+  def pathsubext(path, repl) Pathname.new(path).sub_ext(repl).to_s end
+  defassert(:pathsubext, 'a.o', 'a.c', '.o')
+  defassert(:pathsubext, 'a.o', 'a.c++', '.o')
+  defassert(:pathsubext, 'a.png', 'a.gif', '.png')
+  defassert(:pathsubext, 'ruby.tar.bz2', 'ruby.tar.gz', '.bz2')
+  defassert(:pathsubext, 'd/a.o', 'd/a.c', '.o')
+  defassert(:pathsubext, 'foo', 'foo.exe', '')
+  defassert(:pathsubext, 'lex.yy.o', 'lex.yy.c', '.o')
+  defassert(:pathsubext, 'fooaa.o', 'fooaa', '.o')
+  defassert(:pathsubext, 'd.e/aa.o', 'd.e/aa', '.o')
+  defassert(:pathsubext, 'long_enough.bug-3664', 'long_enough.not_to_be_embeded[ruby-core:31640]', '.bug-3664')
+
+  def test_sub_matchdata
+    result = Pathname("abc.gif").sub(/\..*/) {
+      assert_not_nil($~)
+      assert_equal(".gif", $~[0])
+      ".png"
+    }
+    assert_equal("abc.png", result.to_s)
+  end
+
+  def root?(path)
+    Pathname.new(path).root?
+  end
+
+  defassert(:root?, true, "/")
+  defassert(:root?, true, "//")
+  defassert(:root?, true, "///")
+  defassert(:root?, false, "")
+  defassert(:root?, false, "a")
+
+  def test_mountpoint?
+    r = Pathname("/").mountpoint?
+    assert_include([true, false], r)
+  end
+
+  def test_mountpoint_enoent
+    r = Pathname("/nonexistent").mountpoint?
+    assert_equal false, r
+  end
+
+  def test_destructive_update
+    path = Pathname.new("a")
+    path.to_s.replace "b"
+    assert_equal(Pathname.new("a"), path)
+  end
+
+  def test_null_character
+    assert_raise(ArgumentError) { Pathname.new("\0") }
+  end
+
+  def test_taint
+    obj = Pathname.new("a"); assert_same(obj, obj.taint)
+    obj = Pathname.new("a"); assert_same(obj, obj.untaint)
+
+    assert_equal(false, Pathname.new("a"      )           .tainted?)
+    assert_equal(false, Pathname.new("a"      )      .to_s.tainted?)
+    assert_equal(true,  Pathname.new("a"      ).taint     .tainted?)
+    assert_equal(true,  Pathname.new("a"      ).taint.to_s.tainted?)
+    assert_equal(true,  Pathname.new("a".taint)           .tainted?)
+    assert_equal(true,  Pathname.new("a".taint)      .to_s.tainted?)
+    assert_equal(true,  Pathname.new("a".taint).taint     .tainted?)
+    assert_equal(true,  Pathname.new("a".taint).taint.to_s.tainted?)
+
+    str = "a"
+    path = Pathname.new(str)
+    str.taint
+    assert_equal(false, path     .tainted?)
+    assert_equal(false, path.to_s.tainted?)
+  end
+
+  def test_untaint
+    obj = Pathname.new("a"); assert_same(obj, obj.untaint)
+
+    assert_equal(false, Pathname.new("a").taint.untaint     .tainted?)
+    assert_equal(false, Pathname.new("a").taint.untaint.to_s.tainted?)
+
+    str = "a".taint
+    path = Pathname.new(str)
+    str.untaint
+    assert_equal(true, path     .tainted?)
+    assert_equal(true, path.to_s.tainted?)
+  end
+
+  def test_freeze
+    obj = Pathname.new("a"); assert_same(obj, obj.freeze)
+
+    assert_equal(false, Pathname.new("a"       )            .frozen?)
+    assert_equal(false, Pathname.new("a".freeze)            .frozen?)
+    assert_equal(true,  Pathname.new("a"       ).freeze     .frozen?)
+    assert_equal(true,  Pathname.new("a".freeze).freeze     .frozen?)
+    assert_equal(false, Pathname.new("a"       )       .to_s.frozen?)
+    assert_equal(false, Pathname.new("a".freeze)       .to_s.frozen?)
+    assert_equal(false, Pathname.new("a"       ).freeze.to_s.frozen?)
+    assert_equal(false, Pathname.new("a".freeze).freeze.to_s.frozen?)
+  end
+
+  def test_freeze_and_taint
+    obj = Pathname.new("a")
+    obj.freeze
+    assert_equal(false, obj.tainted?)
+    assert_raise(RuntimeError) { obj.taint }
+
+    obj = Pathname.new("a")
+    obj.taint
+    assert_equal(true, obj.tainted?)
+    obj.freeze
+    assert_equal(true, obj.tainted?)
+    assert_nothing_raised { obj.taint }
+  end
+
+  def test_to_s
+    str = "a"
+    obj = Pathname.new(str)
+    assert_equal(str, obj.to_s)
+    assert_not_same(str, obj.to_s)
+    assert_not_same(obj.to_s, obj.to_s)
+  end
+
+  def test_kernel_open
+    count = 0
+    result = Kernel.open(Pathname.new(__FILE__)) {|f|
+      assert(File.identical?(__FILE__, f))
+      count += 1
+      2
+    }
+    assert_equal(1, count)
+    assert_equal(2, result)
+  end
+
+  def test_each_filename
+    result = []
+    Pathname.new("/usr/bin/ruby").each_filename {|f| result << f }
+    assert_equal(%w[usr bin ruby], result)
+    assert_equal(%w[usr bin ruby], Pathname.new("/usr/bin/ruby").each_filename.to_a)
+  end
+
+  def test_kernel_pathname
+    assert_equal(Pathname.new("a"), Pathname("a"))
+  end
+
+  def test_children
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {}
+      open("b", "w") {}
+      Dir.mkdir("d")
+      open("d/x", "w") {}
+      open("d/y", "w") {}
+      assert_equal([Pathname("a"), Pathname("b"), Pathname("d")], Pathname(".").children.sort)
+      assert_equal([Pathname("d/x"), Pathname("d/y")], Pathname("d").children.sort)
+      assert_equal([Pathname("x"), Pathname("y")], Pathname("d").children(false).sort)
+    }
+  end
+
+  def test_each_child
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {}
+      open("b", "w") {}
+      Dir.mkdir("d")
+      open("d/x", "w") {}
+      open("d/y", "w") {}
+      a = []; Pathname(".").each_child {|v| a << v }; a.sort!
+      assert_equal([Pathname("a"), Pathname("b"), Pathname("d")], a)
+      a = []; Pathname("d").each_child {|v| a << v }; a.sort!
+      assert_equal([Pathname("d/x"), Pathname("d/y")], a)
+      a = []; Pathname("d").each_child(false) {|v| a << v }; a.sort!
+      assert_equal([Pathname("x"), Pathname("y")], a)
+    }
+  end
+
+  def test_each_line
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.puts 1, 2 }
+      a = []
+      Pathname("a").each_line {|line| a << line }
+      assert_equal(["1\n", "2\n"], a)
+
+      a = []
+      Pathname("a").each_line("2") {|line| a << line }
+      assert_equal(["1\n2", "\n"], a)
+
+      a = []
+      Pathname("a").each_line(1) {|line| a << line }
+      assert_equal(["1", "\n", "2", "\n"], a)
+
+      a = []
+      Pathname("a").each_line("2", 1) {|line| a << line }
+      assert_equal(["1", "\n", "2", "\n"], a)
+
+      a = []
+      enum = Pathname("a").each_line
+      enum.each {|line| a << line }
+      assert_equal(["1\n", "2\n"], a)
+    }
+  end
+
+  def test_readlines
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.puts 1, 2 }
+      a = Pathname("a").readlines
+      assert_equal(["1\n", "2\n"], a)
+    }
+  end
+
+  def test_read
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.puts 1, 2 }
+      assert_equal("1\n2\n", Pathname("a").read)
+    }
+  end
+
+  def test_binread
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      str = Pathname("a").binread
+      assert_equal("abc", str)
+      assert_equal(Encoding::ASCII_8BIT, str.encoding)
+    }
+  end
+
+  def test_write
+    with_tmpchdir('rubytest-pathname') {|dir|
+      path = Pathname("a")
+      path.write "abc"
+      assert_equal("abc", path.read)
+    }
+  end
+
+  def test_binwrite
+    with_tmpchdir('rubytest-pathname') {|dir|
+      path = Pathname("a")
+      path.binwrite "abc\x80"
+      assert_equal("abc\x80".b, path.binread)
+    }
+  end
+
+  def test_sysopen
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      fd = Pathname("a").sysopen
+      io = IO.new(fd)
+      begin
+        assert_equal("abc", io.read)
+      ensure
+        io.close
+      end
+    }
+  end
+
+  def test_atime
+    assert_kind_of(Time, Pathname(__FILE__).atime)
+  end
+
+  def test_birthtime
+    assert_kind_of(Time, Pathname(__FILE__).birthtime)
+  rescue NotImplementedError
+    assert_raise(NotImplementedError) do
+      File.birthtime(__FILE__)
+    end
+  end
+
+  def test_ctime
+    assert_kind_of(Time, Pathname(__FILE__).ctime)
+  end
+
+  def test_mtime
+    assert_kind_of(Time, Pathname(__FILE__).mtime)
+  end
+
+  def test_chmod
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      path = Pathname("a")
+      old = path.stat.mode
+      path.chmod(0444)
+      assert_equal(0444, path.stat.mode & 0777)
+      path.chmod(old)
+    }
+  end
+
+  def test_lchmod
+    return if !has_symlink?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      File.symlink("a", "l")
+      path = Pathname("l")
+      old = path.lstat.mode
+      begin
+        path.lchmod(0444)
+      rescue NotImplementedError
+        next
+      end
+      assert_equal(0444, path.lstat.mode & 0777)
+      path.chmod(old)
+    }
+  end
+
+  def test_chown
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      path = Pathname("a")
+      old_uid = path.stat.uid
+      old_gid = path.stat.gid
+      begin
+        path.chown(0, 0)
+      rescue Errno::EPERM
+        next
+      end
+      assert_equal(0, path.stat.uid)
+      assert_equal(0, path.stat.gid)
+      path.chown(old_uid, old_gid)
+    }
+  end
+
+  def test_lchown
+    return if !has_symlink?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      File.symlink("a", "l")
+      path = Pathname("l")
+      old_uid = path.stat.uid
+      old_gid = path.stat.gid
+      begin
+        path.lchown(0, 0)
+      rescue Errno::EPERM
+        next
+      end
+      assert_equal(0, path.stat.uid)
+      assert_equal(0, path.stat.gid)
+      path.lchown(old_uid, old_gid)
+    }
+  end
+
+  def test_fnmatch
+    path = Pathname("a")
+    assert_equal(true, path.fnmatch("*"))
+    assert_equal(false, path.fnmatch("*.*"))
+    assert_equal(false, Pathname(".foo").fnmatch("*"))
+    assert_equal(true, Pathname(".foo").fnmatch("*", File::FNM_DOTMATCH))
+  end
+
+  def test_fnmatch?
+    path = Pathname("a")
+    assert_equal(true, path.fnmatch?("*"))
+    assert_equal(false, path.fnmatch?("*.*"))
+  end
+
+  def test_ftype
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal("file", Pathname("f").ftype)
+      Dir.mkdir("d")
+      assert_equal("directory", Pathname("d").ftype)
+    }
+  end
+
+  def test_make_link
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      Pathname("l").make_link(Pathname("a"))
+      assert_equal("abc", Pathname("l").read)
+    }
+  end
+
+  def test_open
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      path = Pathname("a")
+
+      path.open {|f|
+        assert_equal("abc", f.read)
+      }
+
+      path.open("r") {|f|
+        assert_equal("abc", f.read)
+      }
+
+      Pathname("b").open("w", 0444) {|f| f.write "def" }
+      assert_equal(0444, File.stat("b").mode & 0777)
+      assert_equal("def", File.read("b"))
+
+      Pathname("c").open("w", 0444, {}) {|f| f.write "ghi" }
+      assert_equal(0444, File.stat("c").mode & 0777)
+      assert_equal("ghi", File.read("c"))
+
+      g = path.open
+      assert_equal("abc", g.read)
+      g.close
+    }
+  end
+
+  def test_readlink
+    return if !has_symlink?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      File.symlink("a", "l")
+      assert_equal(Pathname("a"), Pathname("l").readlink)
+    }
+  end
+
+  def test_rename
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      Pathname("a").rename(Pathname("b"))
+      assert_equal("abc", File.read("b"))
+    }
+  end
+
+  def test_stat
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      s = Pathname("a").stat
+      assert_equal(3, s.size)
+    }
+  end
+
+  def test_lstat
+    return if !has_symlink?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      File.symlink("a", "l")
+      s = Pathname("l").lstat
+      assert_equal(true, s.symlink?)
+      s = Pathname("l").stat
+      assert_equal(false, s.symlink?)
+      assert_equal(3, s.size)
+      s = Pathname("a").lstat
+      assert_equal(false, s.symlink?)
+      assert_equal(3, s.size)
+    }
+  end
+
+  def test_make_symlink
+    return if !has_symlink?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      Pathname("l").make_symlink(Pathname("a"))
+      s = Pathname("l").lstat
+      assert_equal(true, s.symlink?)
+    }
+  end
+
+  def test_truncate
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      Pathname("a").truncate(2)
+      assert_equal("ab", File.read("a"))
+    }
+  end
+
+  def test_utime
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {|f| f.write "abc" }
+      atime = Time.utc(2000)
+      mtime = Time.utc(1999)
+      Pathname("a").utime(atime, mtime)
+      s = File.stat("a")
+      assert_equal(atime, s.atime)
+      assert_equal(mtime, s.mtime)
+    }
+  end
+
+  def test_basename
+    assert_equal(Pathname("basename"), Pathname("dirname/basename").basename)
+    assert_equal(Pathname("bar"), Pathname("foo/bar.x").basename(".x"))
+  end
+
+  def test_dirname
+    assert_equal(Pathname("dirname"), Pathname("dirname/basename").dirname)
+  end
+
+  def test_extname
+    assert_equal(".ext", Pathname("basename.ext").extname)
+  end
+
+  def test_expand_path
+    drv = DOSISH_DRIVE_LETTER ? Dir.pwd.sub(%r(/.*), '') : ""
+    assert_equal(Pathname(drv + "/a"), Pathname("/a").expand_path)
+    assert_equal(Pathname(drv + "/a"), Pathname("a").expand_path("/"))
+    assert_equal(Pathname(drv + "/a"), Pathname("a").expand_path(Pathname("/")))
+    assert_equal(Pathname(drv + "/b"), Pathname("/b").expand_path(Pathname("/a")))
+    assert_equal(Pathname(drv + "/a/b"), Pathname("b").expand_path(Pathname("/a")))
+  end
+
+  def test_split
+    assert_equal([Pathname("dirname"), Pathname("basename")], Pathname("dirname/basename").split)
+  end
+
+  def test_blockdev?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(false, Pathname("f").blockdev?)
+    }
+  end
+
+  def test_chardev?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(false, Pathname("f").chardev?)
+    }
+  end
+
+  def test_executable?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(false, Pathname("f").executable?)
+    }
+  end
+
+  def test_executable_real?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(false, Pathname("f").executable_real?)
+    }
+  end
+
+  def test_exist?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(true, Pathname("f").exist?)
+    }
+  end
+
+  def test_grpowned?
+    skip "Unix file owner test" if DOSISH
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      File.chown(-1, Process.gid, "f")
+      assert_equal(true, Pathname("f").grpowned?)
+    }
+  end
+
+  def test_directory?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(false, Pathname("f").directory?)
+      Dir.mkdir("d")
+      assert_equal(true, Pathname("d").directory?)
+    }
+  end
+
+  def test_file?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(true, Pathname("f").file?)
+      Dir.mkdir("d")
+      assert_equal(false, Pathname("d").file?)
+    }
+  end
+
+  def test_pipe?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(false, Pathname("f").pipe?)
+    }
+  end
+
+  def test_socket?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(false, Pathname("f").socket?)
+    }
+  end
+
+  def test_owned?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(true, Pathname("f").owned?)
+    }
+  end
+
+  def test_readable?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(true, Pathname("f").readable?)
+    }
+  end
+
+  def test_world_readable?
+    skip "Unix file mode bit test" if DOSISH
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      File.chmod(0400, "f")
+      assert_equal(nil, Pathname("f").world_readable?)
+      File.chmod(0444, "f")
+      assert_equal(0444, Pathname("f").world_readable?)
+    }
+  end
+
+  def test_readable_real?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(true, Pathname("f").readable_real?)
+    }
+  end
+
+  def test_setuid?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(false, Pathname("f").setuid?)
+    }
+  end
+
+  def test_setgid?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(false, Pathname("f").setgid?)
+    }
+  end
+
+  def test_size
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(3, Pathname("f").size)
+      open("z", "w") {|f| }
+      assert_equal(0, Pathname("z").size)
+      assert_raise(Errno::ENOENT) { Pathname("not-exist").size }
+    }
+  end
+
+  def test_size?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(3, Pathname("f").size?)
+      open("z", "w") {|f| }
+      assert_equal(nil, Pathname("z").size?)
+      assert_equal(nil, Pathname("not-exist").size?)
+    }
+  end
+
+  def test_sticky?
+    skip "Unix file mode bit test" if DOSISH
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(false, Pathname("f").sticky?)
+    }
+  end
+
+  def test_symlink?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(false, Pathname("f").symlink?)
+    }
+  end
+
+  def test_writable?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(true, Pathname("f").writable?)
+    }
+  end
+
+  def test_world_writable?
+    skip "Unix file mode bit test" if DOSISH
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      File.chmod(0600, "f")
+      assert_equal(nil, Pathname("f").world_writable?)
+      File.chmod(0666, "f")
+      assert_equal(0666, Pathname("f").world_writable?)
+    }
+  end
+
+  def test_writable_real?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(true, Pathname("f").writable?)
+    }
+  end
+
+  def test_zero?
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      assert_equal(false, Pathname("f").zero?)
+      open("z", "w") {|f| }
+      assert_equal(true, Pathname("z").zero?)
+      assert_equal(false, Pathname("not-exist").zero?)
+    }
+  end
+
+  def test_s_glob
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      Dir.mkdir("d")
+      assert_equal([Pathname("d"), Pathname("f")], Pathname.glob("*").sort)
+      a = []
+      Pathname.glob("*") {|path| a << path }
+      a.sort!
+      assert_equal([Pathname("d"), Pathname("f")], a)
+    }
+  end
+
+  def test_s_getwd
+    wd = Pathname.getwd
+    assert_kind_of(Pathname, wd)
+  end
+
+  def test_s_pwd
+    wd = Pathname.pwd
+    assert_kind_of(Pathname, wd)
+  end
+
+  def test_entries
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {}
+      open("b", "w") {}
+      assert_equal([Pathname("."), Pathname(".."), Pathname("a"), Pathname("b")], Pathname(".").entries.sort)
+    }
+  end
+
+  def test_each_entry
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {}
+      open("b", "w") {}
+      a = []
+      Pathname(".").each_entry {|v| a << v }
+      assert_equal([Pathname("."), Pathname(".."), Pathname("a"), Pathname("b")], a.sort)
+    }
+  end
+
+  def test_mkdir
+    with_tmpchdir('rubytest-pathname') {|dir|
+      Pathname("d").mkdir
+      assert(File.directory?("d"))
+      Pathname("e").mkdir(0770)
+      assert(File.directory?("e"))
+    }
+  end
+
+  def test_rmdir
+    with_tmpchdir('rubytest-pathname') {|dir|
+      Pathname("d").mkdir
+      assert(File.directory?("d"))
+      Pathname("d").rmdir
+      assert(!File.exist?("d"))
+    }
+  end
+
+  def test_opendir
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {}
+      open("b", "w") {}
+      a = []
+      Pathname(".").opendir {|d|
+        d.each {|e| a << e }
+      }
+      assert_equal([".", "..", "a", "b"], a.sort)
+    }
+  end
+
+  def test_find
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("a", "w") {}
+      open("b", "w") {}
+      Dir.mkdir("d")
+      open("d/x", "w") {}
+      open("d/y", "w") {}
+      a = []; Pathname(".").find {|v| a << v }; a.sort!
+      assert_equal([Pathname("."), Pathname("a"), Pathname("b"), Pathname("d"), Pathname("d/x"), Pathname("d/y")], a)
+      a = []; Pathname("d").find {|v| a << v }; a.sort!
+      assert_equal([Pathname("d"), Pathname("d/x"), Pathname("d/y")], a)
+      a = Pathname(".").find.sort
+      assert_equal([Pathname("."), Pathname("a"), Pathname("b"), Pathname("d"), Pathname("d/x"), Pathname("d/y")], a)
+      a = Pathname("d").find.sort
+      assert_equal([Pathname("d"), Pathname("d/x"), Pathname("d/y")], a)
+
+      begin
+        File.unlink("d/y")
+        File.chmod(0600, "d")
+        a = []; Pathname(".").find(ignore_error: true) {|v| a << v }; a.sort!
+        assert_equal([Pathname("."), Pathname("a"), Pathname("b"), Pathname("d"), Pathname("d/x")], a)
+        a = []; Pathname("d").find(ignore_error: true) {|v| a << v }; a.sort!
+        assert_equal([Pathname("d"), Pathname("d/x")], a)
+
+        skip "no meaning test on Windows" if /mswin|mingw/ =~ RUBY_PLATFORM
+        a = [];
+        assert_raise_with_message(Errno::EACCES, %r{d/x}) do
+          Pathname(".").find(ignore_error: false) {|v| a << v }
+        end
+        a.sort!
+        assert_equal([Pathname("."), Pathname("a"), Pathname("b"), Pathname("d"), Pathname("d/x")], a)
+        a = [];
+        assert_raise_with_message(Errno::EACCES, %r{d/x}) do
+          Pathname("d").find(ignore_error: false) {|v| a << v }
+        end
+        a.sort!
+        assert_equal([Pathname("d"), Pathname("d/x")], a)
+      ensure
+        File.chmod(0700, "d")
+      end
+    }
+  end
+
+  def test_mkpath
+    with_tmpchdir('rubytest-pathname') {|dir|
+      Pathname("a/b/c/d").mkpath
+      assert(File.directory?("a/b/c/d"))
+    }
+  end
+
+  def test_rmtree
+    with_tmpchdir('rubytest-pathname') {|dir|
+      Pathname("a/b/c/d").mkpath
+      assert(File.exist?("a/b/c/d"))
+      Pathname("a").rmtree
+      assert(!File.exist?("a"))
+    }
+  end
+
+  def test_unlink
+    with_tmpchdir('rubytest-pathname') {|dir|
+      open("f", "w") {|f| f.write "abc" }
+      Pathname("f").unlink
+      assert(!File.exist?("f"))
+      Dir.mkdir("d")
+      Pathname("d").unlink
+      assert(!File.exist?("d"))
+    }
+  end
+
+  def test_matchop
+    assert_raise(NoMethodError) { Pathname("a") =~ /a/ }
+  end
+
+  def test_file_basename
+    assert_equal("bar", File.basename(Pathname.new("foo/bar")))
+  end
+
+  def test_file_dirname
+    assert_equal("foo", File.dirname(Pathname.new("foo/bar")))
+  end
+
+  def test_file_split
+    assert_equal(["foo", "bar"], File.split(Pathname.new("foo/bar")))
+  end
+
+  def test_file_extname
+    assert_equal(".baz", File.extname(Pathname.new("bar.baz")))
+  end
+
+  def test_file_fnmatch
+    assert(File.fnmatch("*.*", Pathname.new("bar.baz")))
+  end
+
+  def test_file_join
+    assert_equal("foo/bar", File.join(Pathname.new("foo"), Pathname.new("bar")))
+    lambda {
+      $SAFE = 1
+      assert_equal("foo/bar", File.join(Pathname.new("foo"), Pathname.new("bar").taint))
+    }.call
+  end
+
+  def test_relative_path_from_casefold
+    assert_separately([], <<-'end;') #    do
+      module File::Constants
+        remove_const :FNM_SYSCASE
+        FNM_SYSCASE = FNM_CASEFOLD
+      end
+      require 'pathname'
+      foo = Pathname.new("fo\u{f6}")
+      bar = Pathname.new("b\u{e4}r".encode("ISO-8859-1"))
+      assert_instance_of(Pathname, foo.relative_path_from(bar))
+    end;
+  end
+end