From 3583d442727ff66814e6cea437d823849946b937 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 16 Jul 2008 19:33:15 +0000
Subject: * test/ruby/enc: moved tests for particular encodings.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@18095 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/enc/test_big5.rb         |  28 +++
 test/ruby/enc/test_cp949.rb        |  28 +++
 test/ruby/enc/test_euc_jp.rb       |  20 +++
 test/ruby/enc/test_euc_kr.rb       |  28 +++
 test/ruby/enc/test_euc_tw.rb       |  28 +++
 test/ruby/enc/test_gb18030.rb      | 125 +++++++++++++
 test/ruby/enc/test_gbk.rb          |  28 +++
 test/ruby/enc/test_iso_8859.rb     | 163 +++++++++++++++++
 test/ruby/enc/test_shift_jis.rb    |  27 +++
 test/ruby/enc/test_utf16.rb        | 358 +++++++++++++++++++++++++++++++++++++
 test/ruby/enc/test_utf32.rb        |  93 ++++++++++
 test/ruby/enc/test_windows_1251.rb |  16 ++
 test/ruby/test_big5.rb             |  28 ---
 test/ruby/test_cp949.rb            |  28 ---
 test/ruby/test_euc_jp.rb           |  20 ---
 test/ruby/test_euc_kr.rb           |  28 ---
 test/ruby/test_euc_tw.rb           |  28 ---
 test/ruby/test_gb18030.rb          | 125 -------------
 test/ruby/test_gbk.rb              |  28 ---
 test/ruby/test_iso_8859.rb         | 163 -----------------
 test/ruby/test_shift_jis.rb        |  27 ---
 test/ruby/test_utf16.rb            | 358 -------------------------------------
 test/ruby/test_utf32.rb            |  93 ----------
 test/ruby/test_windows_1251.rb     |  16 --
 24 files changed, 942 insertions(+), 942 deletions(-)
 create mode 100644 test/ruby/enc/test_big5.rb
 create mode 100644 test/ruby/enc/test_cp949.rb
 create mode 100644 test/ruby/enc/test_euc_jp.rb
 create mode 100644 test/ruby/enc/test_euc_kr.rb
 create mode 100644 test/ruby/enc/test_euc_tw.rb
 create mode 100644 test/ruby/enc/test_gb18030.rb
 create mode 100644 test/ruby/enc/test_gbk.rb
 create mode 100644 test/ruby/enc/test_iso_8859.rb
 create mode 100644 test/ruby/enc/test_shift_jis.rb
 create mode 100644 test/ruby/enc/test_utf16.rb
 create mode 100644 test/ruby/enc/test_utf32.rb
 create mode 100644 test/ruby/enc/test_windows_1251.rb
 delete mode 100644 test/ruby/test_big5.rb
 delete mode 100644 test/ruby/test_cp949.rb
 delete mode 100644 test/ruby/test_euc_jp.rb
 delete mode 100644 test/ruby/test_euc_kr.rb
 delete mode 100644 test/ruby/test_euc_tw.rb
 delete mode 100644 test/ruby/test_gb18030.rb
 delete mode 100644 test/ruby/test_gbk.rb
 delete mode 100644 test/ruby/test_iso_8859.rb
 delete mode 100644 test/ruby/test_shift_jis.rb
 delete mode 100644 test/ruby/test_utf16.rb
 delete mode 100644 test/ruby/test_utf32.rb
 delete mode 100644 test/ruby/test_windows_1251.rb

(limited to 'test/ruby')

diff --git a/test/ruby/enc/test_big5.rb b/test/ruby/enc/test_big5.rb
new file mode 100644
index 000000000..e8fe0270a
--- /dev/null
+++ b/test/ruby/enc/test_big5.rb
@@ -0,0 +1,28 @@
+require "test/unit"
+
+class TestBig5 < Test::Unit::TestCase
+  def s(s)
+    s.force_encoding("big5")
+  end
+
+  def test_mbc_enc_len
+    assert_equal(1, s("\xa1\xa1").size)
+  end
+
+  def test_mbc_to_code
+    assert_equal(0xa1a1, s("\xa1\xa1").ord)
+  end
+
+  def test_code_to_mbc
+    assert_equal(s("\xa1\xa1"), 0xa1a1.chr("big5"))
+  end
+
+  def test_mbc_case_fold
+    r = Regexp.new(s("(\xa1\xa1)\\1"), "i")
+    assert_match(r, s("\xa1\xa1\xa1\xa1"))
+  end
+
+  def test_left_adjust_char_head
+    assert_equal(s("\xa1\xa1"), s("\xa1\xa1\xa1\xa1").chop)
+  end
+end
diff --git a/test/ruby/enc/test_cp949.rb b/test/ruby/enc/test_cp949.rb
new file mode 100644
index 000000000..e675c7b80
--- /dev/null
+++ b/test/ruby/enc/test_cp949.rb
@@ -0,0 +1,28 @@
+require "test/unit"
+
+class TestCP949 < Test::Unit::TestCase
+  def s(s)
+    s.force_encoding("cp949")
+  end
+
+  def test_mbc_enc_len
+    assert_equal(1, s("\xa1\xa1").size)
+  end
+
+  def test_mbc_to_code
+    assert_equal(0xa1a1, s("\xa1\xa1").ord)
+  end
+
+  def test_code_to_mbc
+    assert_equal(s("\xa1\xa1"), 0xa1a1.chr("cp949"))
+  end
+
+  def test_mbc_case_fold
+    r = Regexp.new(s("(\xa1\xa1)\\1"), "i")
+    assert_match(r, s("\xa1\xa1\xa1\xa1"))
+  end
+
+  def test_left_adjust_char_head
+    assert_equal(s("\xa1\xa1"), s("\xa1\xa1\xa1\xa1").chop)
+  end
+end
diff --git a/test/ruby/enc/test_euc_jp.rb b/test/ruby/enc/test_euc_jp.rb
new file mode 100644
index 000000000..82abe2116
--- /dev/null
+++ b/test/ruby/enc/test_euc_jp.rb
@@ -0,0 +1,20 @@
+# vim: set fileencoding=euc-jp
+
+require "test/unit"
+
+class TestEUC_JP < Test::Unit::TestCase
+  def test_mbc_case_fold
+    assert_match(/(ａ)(a)\1\2/i, "ａaａA")
+    assert_no_match(/(ａ)(a)\1\2/i, "ａaＡA")
+  end
+
+  def test_property
+    assert_match(/あ{0}\p{Hiragana}{4}/, "ひらがな")
+    assert_no_match(/あ{0}\p{Hiragana}{4}/, "カタカナ")
+    assert_no_match(/あ{0}\p{Hiragana}{4}/, "漢字漢字")
+    assert_no_match(/あ{0}\p{Katakana}{4}/, "ひらがな")
+    assert_match(/あ{0}\p{Katakana}{4}/, "カタカナ")
+    assert_no_match(/あ{0}\p{Katakana}{4}/, "漢字漢字")
+    assert_raise(RegexpError) { Regexp.new('あ{0}\p{foobarbaz}') }
+  end
+end
diff --git a/test/ruby/enc/test_euc_kr.rb b/test/ruby/enc/test_euc_kr.rb
new file mode 100644
index 000000000..087bc795f
--- /dev/null
+++ b/test/ruby/enc/test_euc_kr.rb
@@ -0,0 +1,28 @@
+require "test/unit"
+
+class TestEucKr < Test::Unit::TestCase
+  def s(s)
+    s.force_encoding("euc-kr")
+  end
+
+  def test_mbc_enc_len
+    assert_equal(1, s("\xa1\xa1").size)
+  end
+
+  def test_mbc_to_code
+    assert_equal(0xa1a1, s("\xa1\xa1").ord)
+  end
+
+  def test_code_to_mbc
+    assert_equal(s("\xa1\xa1"), 0xa1a1.chr("euc-kr"))
+  end
+
+  def test_mbc_case_fold
+    r = Regexp.new(s("(\xa1\xa1)\\1"), "i")
+    assert_match(r, s("\xa1\xa1\xa1\xa1"))
+  end
+
+  def test_left_adjust_char_head
+    assert_equal(s("\xa1\xa1"), s("\xa1\xa1\xa1\xa1").chop)
+  end
+end
diff --git a/test/ruby/enc/test_euc_tw.rb b/test/ruby/enc/test_euc_tw.rb
new file mode 100644
index 000000000..f36d86b08
--- /dev/null
+++ b/test/ruby/enc/test_euc_tw.rb
@@ -0,0 +1,28 @@
+require "test/unit"
+
+class TestEucTw < Test::Unit::TestCase
+  def s(s)
+    s.force_encoding("euc-tw")
+  end
+
+  def test_mbc_enc_len
+    assert_equal(1, s("\xa1\xa1").size)
+  end
+
+  def test_mbc_to_code
+    assert_equal(0xa1a1, s("\xa1\xa1").ord)
+  end
+
+  def test_code_to_mbc
+    assert_equal(s("\xa1\xa1"), 0xa1a1.chr("euc-tw"))
+  end
+
+  def test_mbc_case_fold
+    r = Regexp.new(s("(\xa1\xa1)\\1"), "i")
+    assert_match(r, s("\xa1\xa1\xa1\xa1"))
+  end
+
+  def test_left_adjust_char_head
+    assert_equal(s("\xa1\xa1"), s("\xa1\xa1\xa1\xa1").chop)
+  end
+end
diff --git a/test/ruby/enc/test_gb18030.rb b/test/ruby/enc/test_gb18030.rb
new file mode 100644
index 000000000..a33a9eb28
--- /dev/null
+++ b/test/ruby/enc/test_gb18030.rb
@@ -0,0 +1,125 @@
+require "test/unit"
+
+class TestGB18030 < Test::Unit::TestCase
+  def s(s)
+    s.force_encoding("gb18030")
+  end
+
+  def test_mbc_enc_len
+    assert_equal(1, s("\x81\x40").size)
+    assert_equal(1, s("\x81\x30\x81\x30").size)
+  end
+
+  def test_mbc_to_code
+    assert_equal(0x8140, s("\x81\x40").ord)
+  end
+
+  def test_code_to_mbc
+    assert_equal(s("\x81\x40"), 0x8140.chr("gb18030"))
+  end
+
+  def test_mbc_case_fold
+    r = Regexp.new(s("(\x81\x40)\\1"), "i")
+    assert_match(r, s("\x81\x40\x81\x40"))
+  end
+
+  def scheck(c, i)
+    assert_equal(s(c.reverse.take(c.size - i).join), s(c.reverse.join).chop)
+  end
+
+  def fcheck(c)
+    assert_raise(ArgumentError) { s(c.reverse.join).chop }
+  end
+
+  def test_left_adjust_char_head
+    # C1: 00-2f, 3a-3f, 7f, ff
+    # C2: 40-7e, 80
+    # C4: 30-39
+    # CM: 81-fe
+    c1 = "\x2f"
+    c2 = "\x40"
+    c4 = "\x30"
+    cm = "\x81"
+
+    # S_START-c1
+    # S_START-c2-S_one_C2-0
+    # S_START-c2-S_one_C2-c1
+    # S_START-c2-S_one_C2-cm-S_odd_CM_one_CX-c1
+    # S_START-c2-S_one_C2-cm-S_odd_CM_one_CX-cm-S_even_CM_one_CX-c1
+    # S_START-c2-S_one_C2-cm-S_odd_CM_one_CX-cm-S_even_CM_one_CX-cm-S_odd_CM_one_CX(rec)
+    # S_START-c4-S_one_C4-c1
+    # S_START-c4-S_one_C4-cm-S_one_CMC4-c1
+    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-c1
+    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c1
+    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c4-S_one_C4_even_CMC4-c1
+    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c4-S_one_C4_even_CMC4-cm-S_odd_CMC4-c1
+    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c4-S_one_C4_even_CMC4-cm-S_odd_CMC4-c4-S_one_C4_odd_CMC4(rec)
+    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c4-S_one_C4_even_CMC4-cm-S_odd_CMC4-cm-S_odd_CM_odd_CMC4-c1
+    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c4-S_one_C4_even_CMC4-cm-S_odd_CMC4-cm-S_odd_CM_odd_CMC4-cm-S_even_CM_odd_CMC4-c1
+    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c4-S_one_C4_even_CMC4-cm-S_odd_CMC4-cm-S_odd_CM_odd_CMC4-cm-S_even_CM_odd_CMC4-cm-S_odd_CM_odd_CMC4(rec)
+    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-cm-S_odd_CM_even_CMC4-c1
+    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-cm-S_odd_CM_even_CMC4-cm-S_even_CM_even_CMC4-c1
+    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-cm-S_odd_CM_even_CMC4-cm-S_even_CM_even_CMC4-cm-S_odd_CM_even_CMC4(rec)
+    # S_START-c4-S_one_C4-cm-S_one_CMC4-cm-S_even_CM_one_CX(rec)
+    # S_START-cm-S_one_CM-c1
+    # S_START-cm-S_one_CM-c4-S_odd_C4CM-c1
+    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c1
+    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c4-S_even_C4CM-c1
+    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c4-S_even_C4CM-cm-S_one_CM_even_C4CM-c1
+    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c4-S_even_C4CM-cm-S_one_CM_even_C4CM-c4-S_odd_C4CM(rec)
+    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c4-S_even_C4CM-cm-S_one_CM_even_C4CM-cm-S_even_CM_even_C4CM-c1
+    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c4-S_even_C4CM-cm-S_one_CM_even_C4CM-cm-S_even_CM_even_C4CM-cm-S_odd_CM_even_C4CM-c1
+    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c4-S_even_C4CM-cm-S_one_CM_even_C4CM-cm-S_even_CM_even_C4CM-cm-S_odd_CM_even_C4CM-cm-S_even_CM_even_C4CM(rec)
+    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-cm-S_even_CM_odd_C4CM-c1
+    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-cm-S_even_CM_odd_C4CM-cm-S_odd_CM_odd_C4CM-c1
+    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-cm-S_even_CM_odd_C4CM-cm-S_odd_CM_odd_C4CM-cm-S_even_CM_odd_C4CM(rec)
+    # S_START-cm-S_one_CM-cm-S_odd_CM_one_CX(rec)
+
+    scheck([c1], 1)
+    scheck([c2], 1)
+    scheck([c2, c1], 1)
+    scheck([c2, cm, c1], 2)
+    scheck([c2, cm, cm, c1], 1)
+    scheck([c2, cm, cm, cm], 2)
+    scheck([c4], 1)
+    scheck([c4, c1], 1)
+    scheck([c4, cm], 2)
+    fcheck([c4, cm, c1])
+    fcheck([c4, cm, c4, c1])
+    scheck([c4, cm, c4, cm], 4)
+    scheck([c4, cm, c4, cm, c1], 4)
+    scheck([c4, cm, c4, cm, c4], 4)
+    scheck([c4, cm, c4, cm, c4, c1], 4)
+    fcheck([c4, cm, c4, cm, c4, cm])
+    fcheck([c4, cm, c4, cm, c4, cm, c1])
+    fcheck([c4, cm, c4, cm, c4, cm, c4])
+    scheck([c4, cm, c4, cm, c4, cm, cm, c1], 4)
+    fcheck([c4, cm, c4, cm, c4, cm, cm, cm])
+    fcheck([c4, cm, c4, cm, c4, cm, cm, cm, c1])
+    scheck([c4, cm, c4, cm, c4, cm, cm, cm, cm], 4)
+    fcheck([c4, cm, c4, cm, cm, c1])
+    scheck([c4, cm, c4, cm, cm, cm], 4)
+    scheck([c4, cm, c4, cm, cm, cm, c1], 4)
+    fcheck([c4, cm, c4, cm, cm, cm, cm])
+    scheck([c4, cm, cm], 1)
+    scheck([cm], 1)
+    fcheck([cm, c1])
+    fcheck([cm, c4, c1])
+    scheck([cm, c4, cm], 3)
+    fcheck([cm, c4, cm, c1])
+    fcheck([cm, c4, cm, c4])
+    fcheck([cm, c4, cm, c4, c1])
+    fcheck([cm, c4, cm, c4, cm])
+    fcheck([cm, c4, cm, c4, cm, c1])
+    fcheck([cm, c4, cm, c4, cm, c4])
+    fcheck([cm, c4, cm, c4, cm, cm, c1])
+    fcheck([cm, c4, cm, c4, cm, cm, cm])
+    fcheck([cm, c4, cm, c4, cm, cm, cm, c1])
+    fcheck([cm, c4, cm, c4, cm, cm, cm, cm])
+    fcheck([cm, c4, cm, cm, c1])
+    fcheck([cm, c4, cm, cm, cm])
+    fcheck([cm, c4, cm, cm, cm, c1])
+    fcheck([cm, c4, cm, cm, cm, cm])
+    scheck([cm, cm], 2)
+  end
+end
diff --git a/test/ruby/enc/test_gbk.rb b/test/ruby/enc/test_gbk.rb
new file mode 100644
index 000000000..d6dc5d6d1
--- /dev/null
+++ b/test/ruby/enc/test_gbk.rb
@@ -0,0 +1,28 @@
+require "test/unit"
+
+class TestGBK < Test::Unit::TestCase
+  def s(s)
+    s.force_encoding("gbk")
+  end
+
+  def test_mbc_enc_len
+    assert_equal(1, s("\x81\x40").size)
+  end
+
+  def test_mbc_to_code
+    assert_equal(0x8140, s("\x81\x40").ord)
+  end
+
+  def test_code_to_mbc
+    assert_equal(s("\x81\x40"), 0x8140.chr("gbk"))
+  end
+
+  def test_mbc_case_fold
+    r = Regexp.new(s("(\x81\x40)\\1"), "i")
+    assert_match(r, s("\x81\x40\x81\x40"))
+  end
+
+  def test_left_adjust_char_head
+    assert_equal(s("\x81\x40"), s("\x81\x40\x81\x40").chop)
+  end
+end
diff --git a/test/ruby/enc/test_iso_8859.rb b/test/ruby/enc/test_iso_8859.rb
new file mode 100644
index 000000000..64cc7cd76
--- /dev/null
+++ b/test/ruby/enc/test_iso_8859.rb
@@ -0,0 +1,163 @@
+require 'test/unit'
+
+class TestISO8859 < Test::Unit::TestCase
+  ASSERTS = %q(
+    assert_match(/^(\xdf)\1$/i, "\xdf\xdf")
+    assert_match(/^(\xdf)\1$/i, "ssss")
+    # assert_match(/^(\xdf)\1$/i, "\xdfss") # this must be bug...
+    assert_match(/^[\xdfz]+$/i, "sszzsszz")
+    assert_match(/^SS$/i, "\xdf")
+    assert_match(/^Ss$/i, "\xdf")
+    ((0xc0..0xde).to_a - [0xd7]).each do |c|
+      c1 = c.chr("ENCODING")
+      c2 = (c + 0x20).chr("ENCODING")
+      assert_match(/^(#{ c1 })\1$/i, c2 + c1)
+      assert_match(/^(#{ c2 })\1$/i, c1 + c2)
+      assert_match(/^[#{ c1 }]+$/i, c2 + c1)
+      assert_match(/^[#{ c2 }]+$/i, c1 + c2)
+    end
+    assert_match(/^\xff$/i, "\xff")
+  )
+
+  def test_iso_8859_1
+    eval("# encoding: iso8859-1\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-1"))
+  end
+
+  def test_iso_8859_2
+    eval("# encoding: iso8859-2\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-2"))
+  end
+
+  def test_iso_8859_3
+    eval(%q(# encoding: iso8859-3
+      assert_match(/^(\xdf)\1$/i, "\xdf\xdf")
+      assert_match(/^(\xdf)\1$/i, "ssss")
+      assert_match(/^[\xdfz]+$/i, "sszzsszz")
+      assert_match(/^SS$/i, "\xdf")
+      assert_match(/^Ss$/i, "\xdf")
+      [0xa1, 0xa6, *(0xa9..0xac), 0xaf].each do |c|
+        c1 = c.chr("iso8859-3")
+        c2 = (c + 0x10).chr("iso8859-3")
+        assert_match(/^(#{ c1 })\1$/i, c2 + c1)
+        assert_match(/^(#{ c2 })\1$/i, c1 + c2)
+        assert_match(/^[#{ c1 }]+$/i, c2 + c1)
+        assert_match(/^[#{ c2 }]+$/i, c1 + c2)
+      end
+      ([*(0xc0..0xde)] - [0xc3, 0xd0, 0xd7]).each do |c|
+        c1 = c.chr("iso8859-3")
+        c2 = (c + 0x20).chr("iso8859-3")
+        assert_match(/^(#{ c1 })\1$/i, c2 + c1)
+        assert_match(/^(#{ c2 })\1$/i, c1 + c2)
+        assert_match(/^[#{ c1 }]+$/i, c2 + c1)
+        assert_match(/^[#{ c2 }]+$/i, c1 + c2)
+      end
+    ))
+  end
+
+  def test_iso_8859_4
+    eval("# encoding: iso8859-4\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-4"))
+  end
+
+  def test_iso_8859_5
+    eval(%q(# encoding: iso8859-5
+      (0xb0..0xcf).each do |c|
+        c1 = c.chr("iso8859-5")
+        c2 = (c + 0x20).chr("iso8859-5")
+        assert_match(/^(#{ c1 })\1$/i, c2 + c1)
+        assert_match(/^(#{ c2 })\1$/i, c1 + c2)
+        assert_match(/^[#{ c1 }]+$/i, c2 + c1)
+        assert_match(/^[#{ c2 }]+$/i, c1 + c2)
+      end
+      ((0xa1..0xaf).to_a - [0xad]).each do |c|
+        c1 = c.chr("iso8859-5")
+        c2 = (c + 0x50).chr("iso8859-5")
+        assert_match(/^(#{ c1 })\1$/i, c2 + c1)
+        assert_match(/^(#{ c2 })\1$/i, c1 + c2)
+        assert_match(/^[#{ c1 }]+$/i, c2 + c1)
+        assert_match(/^[#{ c2 }]+$/i, c1 + c2)
+      end
+    ))
+  end
+
+  def test_iso_8859_6
+    eval(%q(# encoding: iso8859-6
+      [0xa4, 0xac, 0xbb, 0xbf, *(0xc1..0xda), *(0xe0..0xf2)].each do |c|
+        c1 = c.chr("iso8859-6")
+        assert_match(/^(#{ c1 })\1$/i, c1 * 2)
+      end
+    ))
+  end
+
+  def test_iso_8859_7
+    eval(%q(# encoding: iso8859-7
+      ((0xa0..0xfe).to_a - [0xae, 0xd2]).each do |c|
+        c1 = c.chr("iso8859-7")
+        assert_match(/^(#{ c1 })\1$/i, c1 * 2)
+      end
+      ((0xc1..0xd9).to_a - [0xd2]).each do |c|
+        c1 = c.chr("iso8859-7")
+        c2 = (c + 0x20).chr("iso8859-7")
+        assert_match(/^(#{ c1 })\1$/i, c2 + c1)
+        assert_match(/^(#{ c2 })\1$/i, c1 + c2)
+        assert_match(/^[#{ c1 }]+$/i, c2 + c1)
+        assert_match(/^[#{ c2 }]+$/i, c1 + c2)
+      end
+    ))
+  end
+
+  def test_iso_8859_8
+    eval(%q(# encoding: iso8859-8
+      [0xa0, *(0xa2..0xbe), *(0xdf..0xfa), 0xfc, 0xfd].each do |c|
+        c1 = c.chr("iso8859-8")
+        assert_match(/^(#{ c1 })\1$/i, c1 * 2)
+      end
+    ))
+  end
+
+  def test_iso_8859_9
+    eval(%q(# encoding: iso8859-9
+      assert_match(/^(\xdf)\1$/i, "\xdf\xdf")
+      assert_match(/^(\xdf)\1$/i, "ssss")
+      assert_match(/^[\xdfz]+$/i, "sszzsszz")
+      assert_match(/^SS$/i, "\xdf")
+      assert_match(/^Ss$/i, "\xdf")
+      ([*(0xc0..0xdc)] - [0xd7]).each do |c|
+        c1 = c.chr("iso8859-9")
+        c2 = (c + 0x20).chr("iso8859-9")
+        assert_match(/^(#{ c1 })\1$/i, c2 + c1)
+        assert_match(/^(#{ c2 })\1$/i, c1 + c2)
+        assert_match(/^[#{ c1 }]+$/i, c2 + c1)
+        assert_match(/^[#{ c2 }]+$/i, c1 + c2)
+      end
+    ))
+  end
+
+  def test_iso_8859_10
+    eval("# encoding: iso8859-10\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-10"))
+  end
+
+  def test_iso_8859_11
+    eval(%q(# encoding: iso8859-11
+      [*(0xa0..0xda), *(0xdf..0xfb)].each do |c|
+        c1 = c.chr("iso8859-11")
+        assert_match(/^(#{ c1 })\1$/i, c1 * 2)
+      end
+    ))
+  end
+
+  def test_iso_8859_13
+    eval("# encoding: iso8859-13\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-13"))
+  end
+
+  def test_iso_8859_14
+    eval("# encoding: iso8859-14\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-14"))
+  end
+
+  def test_iso_8859_15
+    eval("# encoding: iso8859-15\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-15"))
+  end
+
+  def test_iso_8859_16
+    eval("# encoding: iso8859-16\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-16"))
+  end
+end
+
diff --git a/test/ruby/enc/test_shift_jis.rb b/test/ruby/enc/test_shift_jis.rb
new file mode 100644
index 000000000..f81cb7801
--- /dev/null
+++ b/test/ruby/enc/test_shift_jis.rb
@@ -0,0 +1,27 @@
+# vim: set fileencoding=shift_jis
+
+require "test/unit"
+
+class TestShiftJIS < Test::Unit::TestCase
+  def test_mbc_case_fold
+    assert_match(/(��)(a)\1\2/i, "��a��A")
+    assert_no_match(/(��)(a)\1\2/i, "��a�`A")
+  end
+
+  def test_property
+    assert_match(/��{0}\p{Hiragana}{4}/, "��������")
+    assert_no_match(/��{0}\p{Hiragana}{4}/, "�J�^�J�i")
+    assert_no_match(/��{0}\p{Hiragana}{4}/, "��������")
+    assert_no_match(/��{0}\p{Katakana}{4}/, "��������")
+    assert_match(/��{0}\p{Katakana}{4}/, "�J�^�J�i")
+    assert_no_match(/��{0}\p{Katakana}{4}/, "��������")
+    assert_raise(RegexpError) { Regexp.new('��{0}\p{foobarbaz}') }
+  end
+
+  def test_code_to_mbclen
+    s = "����������"
+    s << 0x82a9
+    assert_equal("������������", s)
+    assert_raise(ArgumentError) { s << 0x82 }
+  end
+end
diff --git a/test/ruby/enc/test_utf16.rb b/test/ruby/enc/test_utf16.rb
new file mode 100644
index 000000000..c10463b2b
--- /dev/null
+++ b/test/ruby/enc/test_utf16.rb
@@ -0,0 +1,358 @@
+require 'test/unit'
+
+class TestUTF16 < Test::Unit::TestCase
+  def encdump(str)
+    d = str.dump
+    if /\.force_encoding\("[A-Za-z0-9.:_+-]*"\)\z/ =~ d
+      d
+    else
+      "#{d}.force_encoding(#{str.encoding.name.dump})"
+    end
+  end
+
+  def enccall(recv, meth, *args)
+    desc = ''
+    if String === recv
+      desc << encdump(recv)
+    else
+      desc << recv.inspect
+    end
+    desc << '.' << meth.to_s
+    if !args.empty?
+      desc << '('
+      args.each_with_index {|a, i|
+        desc << ',' if 0 < i
+        if String === a
+          desc << encdump(a)
+        else
+          desc << a.inspect
+        end
+      }
+      desc << ')'
+    end
+    result = nil
+    assert_nothing_raised(desc) {
+      result = recv.send(meth, *args)
+    }
+    result
+  end
+
+  def assert_str_equal(expected, actual, message=nil)
+    full_message = build_message(message, <<EOT)
+#{encdump expected} expected but not equal to
+#{encdump actual}.
+EOT
+    assert_block(full_message) { expected == actual }
+  end
+
+  # tests start
+
+  def test_utf16be_valid_encoding
+    [
+      "\x00\x00",
+      "\xd7\xff",
+      "\xd8\x00\xdc\x00",
+      "\xdb\xff\xdf\xff",
+      "\xe0\x00",
+      "\xff\xff",
+    ].each {|s|
+      s.force_encoding("utf-16be")
+      assert_equal(true, s.valid_encoding?, "#{encdump s}.valid_encoding?")
+    }
+    [
+      "\x00",
+      "\xd7",
+      "\xd8\x00",
+      "\xd8\x00\xd8\x00",
+      "\xdc\x00",
+      "\xdc\x00\xd8\x00",
+      "\xdc\x00\xdc\x00",
+      "\xe0",
+      "\xff",
+    ].each {|s|
+      s.force_encoding("utf-16be")
+      assert_equal(false, s.valid_encoding?, "#{encdump s}.valid_encoding?")
+    }
+  end
+
+  def test_utf16le_valid_encoding
+    [
+      "\x00\x00",
+      "\xff\xd7",
+      "\x00\xd8\x00\xdc",
+      "\xff\xdb\xff\xdf",
+      "\x00\xe0",
+      "\xff\xff",
+    ].each {|s|
+      s.force_encoding("utf-16le")
+      assert_equal(true, s.valid_encoding?, "#{encdump s}.valid_encoding?")
+    }
+    [
+      "\x00",
+      "\xd7",
+      "\x00\xd8",
+      "\x00\xd8\x00\xd8",
+      "\x00\xdc",
+      "\x00\xdc\x00\xd8",
+      "\x00\xdc\x00\xdc",
+      "\xe0",
+      "\xff",
+    ].each {|s|
+      s.force_encoding("utf-16le")
+      assert_equal(false, s.valid_encoding?, "#{encdump s}.valid_encoding?")
+    }
+  end
+
+  def test_strftime
+    s = "aa".force_encoding("utf-16be")
+    assert_raise(ArgumentError, "Time.now.strftime(#{encdump s})") { Time.now.strftime(s) }
+  end
+
+  def test_intern
+    s = "aaaa".force_encoding("utf-16be")
+    assert_equal(s.encoding, s.intern.to_s.encoding, "#{encdump s}.intern.to_s.encoding")
+  end
+
+  def test_sym_eq
+    s = "aa".force_encoding("utf-16le")
+    assert(s.intern != :aa, "#{encdump s}.intern != :aa")
+  end
+
+  def test_compatible
+    s1 = "aa".force_encoding("utf-16be")
+    s2 = "z".force_encoding("us-ascii")
+    assert_nil(Encoding.compatible?(s1, s2), "Encoding.compatible?(#{encdump s1}, #{encdump s2})")
+  end
+
+  def test_casecmp
+    s1 = "aa".force_encoding("utf-16be")
+    s2 = "AA"
+    assert_not_equal(0, s1.casecmp(s2), "#{encdump s1}.casecmp(#{encdump s2})")
+  end
+
+  def test_end_with
+    s1 = "ab".force_encoding("utf-16be")
+    s2 = "b".force_encoding("utf-16be")
+    assert_equal(false, s1.end_with?(s2), "#{encdump s1}.end_with?(#{encdump s2})")
+  end
+
+  def test_hex
+    assert_raise(ArgumentError) {
+      "ff".encode("utf-16le").hex
+    }
+    assert_raise(ArgumentError) {
+      "ff".encode("utf-16be").hex
+    }
+  end
+
+  def test_oct
+    assert_raise(ArgumentError) {
+      "77".encode("utf-16le").oct
+    }
+    assert_raise(ArgumentError) {
+      "77".encode("utf-16be").oct
+    }
+  end
+
+  def test_count
+    s1 = "aa".force_encoding("utf-16be")
+    s2 = "aa"
+    assert_raise(ArgumentError, "#{encdump s1}.count(#{encdump s2})") {
+      s1.count(s2)
+    }
+  end
+
+  def test_plus
+    s1 = "a".force_encoding("us-ascii")
+    s2 = "aa".force_encoding("utf-16be")
+    assert_raise(ArgumentError, "#{encdump s1} + #{encdump s2}") {
+      s1 + s2
+    }
+  end
+
+  def test_encoding_find
+    assert_raise(ArgumentError) {
+      Encoding.find("utf-8".force_encoding("utf-16be"))
+    }
+  end
+
+  def test_interpolation
+    s = "aa".force_encoding("utf-16be")
+    assert_raise(ArgumentError, "\"a\#{#{encdump s}}\"") {
+      "a#{s}"
+    }
+  end
+
+  def test_slice!
+    enccall("aa".force_encoding("UTF-16BE"), :slice!, -1)
+  end
+
+  def test_plus_empty1
+    s1 = ""
+    s2 = "aa".force_encoding("utf-16be")
+    assert_nothing_raised("#{encdump s1} << #{encdump s2}") {
+      s1 + s2
+    }
+  end
+
+  def test_plus_empty2
+    s1 = "aa"
+    s2 = "".force_encoding("utf-16be")
+    assert_nothing_raised("#{encdump s1} << #{encdump s2}") {
+      s1 + s2
+    }
+  end
+
+  def test_plus_nonempty
+    s1 = "aa"
+    s2 = "bb".force_encoding("utf-16be")
+    assert_raise(ArgumentError, "#{encdump s1} << #{encdump s2}") {
+      s1 + s2
+    }
+  end
+
+  def test_concat_empty1
+    s1 = ""
+    s2 = "aa".force_encoding("utf-16be")
+    assert_nothing_raised("#{encdump s1} << #{encdump s2}") {
+      s1 << s2
+    }
+  end
+
+  def test_concat_empty2
+    s1 = "aa"
+    s2 = "".force_encoding("utf-16be")
+    assert_nothing_raised("#{encdump s1} << #{encdump s2}") {
+      s1 << s2
+    }
+  end
+
+  def test_concat_nonempty
+    s1 = "aa"
+    s2 = "bb".force_encoding("utf-16be")
+    assert_raise(ArgumentError, "#{encdump s1} << #{encdump s2}") {
+      s1 << s2
+    }
+  end
+
+  def test_chomp
+    s = "\1\n".force_encoding("utf-16be")
+    assert_equal(s, s.chomp, "#{encdump s}.chomp")
+    s = "\0\n".force_encoding("utf-16be")
+    assert_equal("", s.chomp, "#{encdump s}.chomp")
+    s = "\0\r\0\n".force_encoding("utf-16be")
+    assert_equal("", s.chomp, "#{encdump s}.chomp")
+  end
+
+  def test_succ
+    s = "\xff\xff".force_encoding("utf-16be")
+    assert(s.succ.valid_encoding?, "#{encdump s}.succ.valid_encoding?")
+
+    s = "\xdb\xff\xdf\xff".force_encoding("utf-16be")
+    assert(s.succ.valid_encoding?, "#{encdump s}.succ.valid_encoding?")
+  end
+
+  def test_regexp_union
+    enccall(Regexp, :union, "aa".force_encoding("utf-16be"), "bb".force_encoding("utf-16be"))
+  end
+
+  def test_empty_regexp
+    s = "".force_encoding("utf-16be")
+    assert_equal(Encoding.find("utf-16be"), Regexp.new(s).encoding,
+                "Regexp.new(#{encdump s}).encoding")
+  end
+
+  def test_regexp_match
+    assert_raise(ArgumentError) { Regexp.new("aa".force_encoding("utf-16be")) =~ "aa" }
+  end
+
+  def test_gsub
+    s = "abcd".force_encoding("utf-16be")
+    assert_nothing_raised {
+      s.gsub(Regexp.new(".".encode("utf-16be")), "xy")
+    }
+    s = "ab\0\ncd".force_encoding("utf-16be")
+    assert_raise(ArgumentError) {
+      s.gsub(Regexp.new(".".encode("utf-16be")), "xy")
+    }
+  end
+
+  def test_split_awk
+    s = " ab cd ".encode("utf-16be")
+    r = s.split(" ".encode("utf-16be"))
+    assert_equal(2, r.length)
+    assert_str_equal("ab".encode("utf-16be"), r[0])
+    assert_str_equal("cd".encode("utf-16be"), r[1])
+  end
+
+  def test_count2
+    e = "abc".count("^b")
+    assert_equal(e, "abc".encode("utf-16be").count("^b".encode("utf-16be")))
+    assert_equal(e, "abc".encode("utf-16le").count("^b".encode("utf-16le")))
+  end
+
+  def test_header
+    assert_raise(ArgumentError) { eval("# encoding:utf-16le\nfoo") }
+    assert_raise(ArgumentError) { eval("# encoding:utf-16be\nfoo") }
+  end
+
+
+  def test_is_mbc_newline
+    sl = "f\0o\0o\0\n\0b\0a\0r\0\n\0b\0a\0z\0\n\0".force_encoding("utf-16le")
+    sb = "\0f\0o\0o\0\n\0b\0a\0r\0\n\0b\0a\0z\0\n".force_encoding("utf-16be")
+    al = sl.lines.to_a
+    ab = sb.lines.to_a
+    assert_equal("f\0o\0o\0\n\0".force_encoding("utf-16le"), al.shift)
+    assert_equal("b\0a\0r\0\n\0".force_encoding("utf-16le"), al.shift)
+    assert_equal("b\0a\0z\0\n\0".force_encoding("utf-16le"), al.shift)
+    assert_equal("\0f\0o\0o\0\n".force_encoding("utf-16be"), ab.shift)
+    assert_equal("\0b\0a\0r\0\n".force_encoding("utf-16be"), ab.shift)
+    assert_equal("\0b\0a\0z\0\n".force_encoding("utf-16be"), ab.shift)
+
+    sl = "f\0o\0o\0\n\0".force_encoding("utf-16le")
+    sb = "\0f\0o\0o\0\n".force_encoding("utf-16be")
+    sl2 = "f\0o\0o\0".force_encoding("utf-16le")
+    sb2 = "\0f\0o\0o".force_encoding("utf-16be")
+    assert_equal(sl2, sl.chomp)
+    assert_equal(sl2, sl.chomp.chomp)
+    assert_equal(sb2, sb.chomp)
+    assert_equal(sb2, sb.chomp.chomp)
+
+    sl = "f\0o\0o\0\n".force_encoding("utf-16le")
+    sb = "\0f\0o\0o\n".force_encoding("utf-16be")
+    assert_equal(sl, sl.chomp)
+    assert_equal(sb, sb.chomp)
+  end
+
+  def test_code_to_mbc
+    assert_equal("a\0".force_encoding("utf-16le"), "a".ord.chr("utf-16le"))
+    assert_equal("\0a".force_encoding("utf-16be"), "a".ord.chr("utf-16be"))
+  end
+
+  def utf8_to_utf16(s, e)
+    s.chars.map {|c| c.ord.chr(e) }.join
+  end
+
+  def test_mbc_case_fold
+    rl = Regexp.new(utf8_to_utf16("^(\u3042)(a)\\1\\2$", "utf-16le"), "i")
+    rb = Regexp.new(utf8_to_utf16("^(\u3042)(a)\\1\\2$", "utf-16be"), "i")
+    assert_equal(Encoding.find("utf-16le"), rl.encoding)
+    assert_equal(Encoding.find("utf-16be"), rb.encoding)
+    assert_match(rl, utf8_to_utf16("\u3042a\u3042a", "utf-16le"))
+    assert_match(rb, utf8_to_utf16("\u3042a\u3042a", "utf-16be"))
+  end
+
+  def test_surrogate_pair
+    sl = "\x42\xd8\xb7\xdf".force_encoding("utf-16le")
+    sb = "\xd8\x42\xdf\xb7".force_encoding("utf-16be")
+
+    assert_equal(1, sl.size)
+    assert_equal(1, sb.size)
+    assert_equal(0x20bb7, sl.ord)
+    assert_equal(0x20bb7, sb.ord)
+    assert_equal(sl, 0x20bb7.chr("utf-16le"))
+    assert_equal(sb, 0x20bb7.chr("utf-16be"))
+    assert_equal("", sl.chop)
+    assert_equal("", sb.chop)
+  end
+end
diff --git a/test/ruby/enc/test_utf32.rb b/test/ruby/enc/test_utf32.rb
new file mode 100644
index 000000000..3d4a45851
--- /dev/null
+++ b/test/ruby/enc/test_utf32.rb
@@ -0,0 +1,93 @@
+require 'test/unit'
+
+class TestUTF32 < Test::Unit::TestCase
+  def encdump(str)
+    d = str.dump
+    if /\.force_encoding\("[A-Za-z0-9.:_+-]*"\)\z/ =~ d
+      d
+    else
+      "#{d}.force_encoding(#{str.encoding.name.dump})"
+    end
+  end
+
+  def assert_str_equal(expected, actual, message=nil)
+    full_message = build_message(message, <<EOT)
+#{encdump expected} expected but not equal to
+#{encdump actual}.
+EOT
+    assert_block(full_message) { expected == actual }
+  end
+
+  def test_substr
+    assert_str_equal(
+      "abcdefgh".force_encoding("utf-32le"),
+      "abcdefgh".force_encoding("utf-32le")[0,3])
+    assert_str_equal(
+      "abcdefgh".force_encoding("utf-32be"),
+      "abcdefgh".force_encoding("utf-32be")[0,3])
+  end
+
+  def test_mbc_len
+    al = "abcdefghijkl".force_encoding("utf-32le").each_char.to_a
+    ab = "abcdefghijkl".force_encoding("utf-32be").each_char.to_a
+    assert_equal("abcd".force_encoding("utf-32le"), al.shift)
+    assert_equal("efgh".force_encoding("utf-32le"), al.shift)
+    assert_equal("ijkl".force_encoding("utf-32le"), al.shift)
+    assert_equal("abcd".force_encoding("utf-32be"), ab.shift)
+    assert_equal("efgh".force_encoding("utf-32be"), ab.shift)
+    assert_equal("ijkl".force_encoding("utf-32be"), ab.shift)
+  end
+
+  def ascii_to_utf16le(s)
+    s.unpack("C*").map {|x| [x,0,0,0] }.flatten.pack("C*").force_encoding("utf-32le")
+  end
+
+  def ascii_to_utf16be(s)
+    s.unpack("C*").map {|x| [0,0,0,x] }.flatten.pack("C*").force_encoding("utf-32be")
+  end
+
+  def test_mbc_newline
+    al = ascii_to_utf16le("foo\nbar\nbaz\n").lines.to_a
+    ab = ascii_to_utf16be("foo\nbar\nbaz\n").lines.to_a
+
+    assert_equal(ascii_to_utf16le("foo\n"), al.shift)
+    assert_equal(ascii_to_utf16le("bar\n"), al.shift)
+    assert_equal(ascii_to_utf16le("baz\n"), al.shift)
+    assert_equal(ascii_to_utf16be("foo\n"), ab.shift)
+    assert_equal(ascii_to_utf16be("bar\n"), ab.shift)
+    assert_equal(ascii_to_utf16be("baz\n"), ab.shift)
+
+    sl = "a\0".force_encoding("utf-32le")
+    sb = "a\0".force_encoding("utf-32be")
+    assert_equal(sl, sl.chomp)
+    assert_equal(sb, sb.chomp)
+  end
+
+  def test_mbc_to_code
+    sl = "a\0\0\0".force_encoding("utf-32le")
+    sb = "\0\0\0a".force_encoding("utf-32be")
+    assert_equal("a".ord, sl.ord)
+    assert_equal("a".ord, sb.ord)
+  end
+
+  def utf8_to_utf32(s, e)
+    s.chars.map {|c| c.ord.chr(e) }.join
+  end
+
+  def test_mbc_case_fold
+    rl = Regexp.new(utf8_to_utf32("^(\u3042)(a)\\1\\2$", "utf-32le"), "i")
+    rb = Regexp.new(utf8_to_utf32("^(\u3042)(a)\\1\\2$", "utf-32be"), "i")
+    assert_equal(Encoding.find("utf-32le"), rl.encoding)
+    assert_equal(Encoding.find("utf-32be"), rb.encoding)
+    assert_match(rl, utf8_to_utf32("\u3042a\u3042a", "utf-32le"))
+    assert_match(rb, utf8_to_utf32("\u3042a\u3042a", "utf-32be"))
+  end
+
+  def test_code_to_mbc
+    sl = "a\0\0\0".force_encoding("utf-32le")
+    sb = "\0\0\0a".force_encoding("utf-32be")
+    assert_equal(sl, "a".ord.chr("utf-32le"))
+    assert_equal(sb, "a".ord.chr("utf-32be"))
+  end
+end
+
diff --git a/test/ruby/enc/test_windows_1251.rb b/test/ruby/enc/test_windows_1251.rb
new file mode 100644
index 000000000..6fbf3159a
--- /dev/null
+++ b/test/ruby/enc/test_windows_1251.rb
@@ -0,0 +1,16 @@
+# encoding:windows-1251
+
+require "test/unit"
+
+class TestWindows1251 < Test::Unit::TestCase
+  def test_windows_1251
+    (0xc0..0xdf).each do |c|
+      c1 = c.chr("windows-1251")
+      c2 = (c + 0x20).chr("windows-1251")
+      assert_match(/^(#{ c1 })\1$/i, c2 + c1)
+      assert_match(/^(#{ c2 })\1$/i, c1 + c2)
+      assert_match(/^[#{ c1 }]+$/i, c2 + c1)
+      assert_match(/^[#{ c2 }]+$/i, c1 + c2)
+    end
+  end
+end
diff --git a/test/ruby/test_big5.rb b/test/ruby/test_big5.rb
deleted file mode 100644
index e8fe0270a..000000000
--- a/test/ruby/test_big5.rb
+++ /dev/null
@@ -1,28 +0,0 @@
-require "test/unit"
-
-class TestBig5 < Test::Unit::TestCase
-  def s(s)
-    s.force_encoding("big5")
-  end
-
-  def test_mbc_enc_len
-    assert_equal(1, s("\xa1\xa1").size)
-  end
-
-  def test_mbc_to_code
-    assert_equal(0xa1a1, s("\xa1\xa1").ord)
-  end
-
-  def test_code_to_mbc
-    assert_equal(s("\xa1\xa1"), 0xa1a1.chr("big5"))
-  end
-
-  def test_mbc_case_fold
-    r = Regexp.new(s("(\xa1\xa1)\\1"), "i")
-    assert_match(r, s("\xa1\xa1\xa1\xa1"))
-  end
-
-  def test_left_adjust_char_head
-    assert_equal(s("\xa1\xa1"), s("\xa1\xa1\xa1\xa1").chop)
-  end
-end
diff --git a/test/ruby/test_cp949.rb b/test/ruby/test_cp949.rb
deleted file mode 100644
index e675c7b80..000000000
--- a/test/ruby/test_cp949.rb
+++ /dev/null
@@ -1,28 +0,0 @@
-require "test/unit"
-
-class TestCP949 < Test::Unit::TestCase
-  def s(s)
-    s.force_encoding("cp949")
-  end
-
-  def test_mbc_enc_len
-    assert_equal(1, s("\xa1\xa1").size)
-  end
-
-  def test_mbc_to_code
-    assert_equal(0xa1a1, s("\xa1\xa1").ord)
-  end
-
-  def test_code_to_mbc
-    assert_equal(s("\xa1\xa1"), 0xa1a1.chr("cp949"))
-  end
-
-  def test_mbc_case_fold
-    r = Regexp.new(s("(\xa1\xa1)\\1"), "i")
-    assert_match(r, s("\xa1\xa1\xa1\xa1"))
-  end
-
-  def test_left_adjust_char_head
-    assert_equal(s("\xa1\xa1"), s("\xa1\xa1\xa1\xa1").chop)
-  end
-end
diff --git a/test/ruby/test_euc_jp.rb b/test/ruby/test_euc_jp.rb
deleted file mode 100644
index 82abe2116..000000000
--- a/test/ruby/test_euc_jp.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-# vim: set fileencoding=euc-jp
-
-require "test/unit"
-
-class TestEUC_JP < Test::Unit::TestCase
-  def test_mbc_case_fold
-    assert_match(/(ａ)(a)\1\2/i, "ａaａA")
-    assert_no_match(/(ａ)(a)\1\2/i, "ａaＡA")
-  end
-
-  def test_property
-    assert_match(/あ{0}\p{Hiragana}{4}/, "ひらがな")
-    assert_no_match(/あ{0}\p{Hiragana}{4}/, "カタカナ")
-    assert_no_match(/あ{0}\p{Hiragana}{4}/, "漢字漢字")
-    assert_no_match(/あ{0}\p{Katakana}{4}/, "ひらがな")
-    assert_match(/あ{0}\p{Katakana}{4}/, "カタカナ")
-    assert_no_match(/あ{0}\p{Katakana}{4}/, "漢字漢字")
-    assert_raise(RegexpError) { Regexp.new('あ{0}\p{foobarbaz}') }
-  end
-end
diff --git a/test/ruby/test_euc_kr.rb b/test/ruby/test_euc_kr.rb
deleted file mode 100644
index 087bc795f..000000000
--- a/test/ruby/test_euc_kr.rb
+++ /dev/null
@@ -1,28 +0,0 @@
-require "test/unit"
-
-class TestEucKr < Test::Unit::TestCase
-  def s(s)
-    s.force_encoding("euc-kr")
-  end
-
-  def test_mbc_enc_len
-    assert_equal(1, s("\xa1\xa1").size)
-  end
-
-  def test_mbc_to_code
-    assert_equal(0xa1a1, s("\xa1\xa1").ord)
-  end
-
-  def test_code_to_mbc
-    assert_equal(s("\xa1\xa1"), 0xa1a1.chr("euc-kr"))
-  end
-
-  def test_mbc_case_fold
-    r = Regexp.new(s("(\xa1\xa1)\\1"), "i")
-    assert_match(r, s("\xa1\xa1\xa1\xa1"))
-  end
-
-  def test_left_adjust_char_head
-    assert_equal(s("\xa1\xa1"), s("\xa1\xa1\xa1\xa1").chop)
-  end
-end
diff --git a/test/ruby/test_euc_tw.rb b/test/ruby/test_euc_tw.rb
deleted file mode 100644
index f36d86b08..000000000
--- a/test/ruby/test_euc_tw.rb
+++ /dev/null
@@ -1,28 +0,0 @@
-require "test/unit"
-
-class TestEucTw < Test::Unit::TestCase
-  def s(s)
-    s.force_encoding("euc-tw")
-  end
-
-  def test_mbc_enc_len
-    assert_equal(1, s("\xa1\xa1").size)
-  end
-
-  def test_mbc_to_code
-    assert_equal(0xa1a1, s("\xa1\xa1").ord)
-  end
-
-  def test_code_to_mbc
-    assert_equal(s("\xa1\xa1"), 0xa1a1.chr("euc-tw"))
-  end
-
-  def test_mbc_case_fold
-    r = Regexp.new(s("(\xa1\xa1)\\1"), "i")
-    assert_match(r, s("\xa1\xa1\xa1\xa1"))
-  end
-
-  def test_left_adjust_char_head
-    assert_equal(s("\xa1\xa1"), s("\xa1\xa1\xa1\xa1").chop)
-  end
-end
diff --git a/test/ruby/test_gb18030.rb b/test/ruby/test_gb18030.rb
deleted file mode 100644
index a33a9eb28..000000000
--- a/test/ruby/test_gb18030.rb
+++ /dev/null
@@ -1,125 +0,0 @@
-require "test/unit"
-
-class TestGB18030 < Test::Unit::TestCase
-  def s(s)
-    s.force_encoding("gb18030")
-  end
-
-  def test_mbc_enc_len
-    assert_equal(1, s("\x81\x40").size)
-    assert_equal(1, s("\x81\x30\x81\x30").size)
-  end
-
-  def test_mbc_to_code
-    assert_equal(0x8140, s("\x81\x40").ord)
-  end
-
-  def test_code_to_mbc
-    assert_equal(s("\x81\x40"), 0x8140.chr("gb18030"))
-  end
-
-  def test_mbc_case_fold
-    r = Regexp.new(s("(\x81\x40)\\1"), "i")
-    assert_match(r, s("\x81\x40\x81\x40"))
-  end
-
-  def scheck(c, i)
-    assert_equal(s(c.reverse.take(c.size - i).join), s(c.reverse.join).chop)
-  end
-
-  def fcheck(c)
-    assert_raise(ArgumentError) { s(c.reverse.join).chop }
-  end
-
-  def test_left_adjust_char_head
-    # C1: 00-2f, 3a-3f, 7f, ff
-    # C2: 40-7e, 80
-    # C4: 30-39
-    # CM: 81-fe
-    c1 = "\x2f"
-    c2 = "\x40"
-    c4 = "\x30"
-    cm = "\x81"
-
-    # S_START-c1
-    # S_START-c2-S_one_C2-0
-    # S_START-c2-S_one_C2-c1
-    # S_START-c2-S_one_C2-cm-S_odd_CM_one_CX-c1
-    # S_START-c2-S_one_C2-cm-S_odd_CM_one_CX-cm-S_even_CM_one_CX-c1
-    # S_START-c2-S_one_C2-cm-S_odd_CM_one_CX-cm-S_even_CM_one_CX-cm-S_odd_CM_one_CX(rec)
-    # S_START-c4-S_one_C4-c1
-    # S_START-c4-S_one_C4-cm-S_one_CMC4-c1
-    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-c1
-    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c1
-    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c4-S_one_C4_even_CMC4-c1
-    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c4-S_one_C4_even_CMC4-cm-S_odd_CMC4-c1
-    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c4-S_one_C4_even_CMC4-cm-S_odd_CMC4-c4-S_one_C4_odd_CMC4(rec)
-    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c4-S_one_C4_even_CMC4-cm-S_odd_CMC4-cm-S_odd_CM_odd_CMC4-c1
-    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c4-S_one_C4_even_CMC4-cm-S_odd_CMC4-cm-S_odd_CM_odd_CMC4-cm-S_even_CM_odd_CMC4-c1
-    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-c4-S_one_C4_even_CMC4-cm-S_odd_CMC4-cm-S_odd_CM_odd_CMC4-cm-S_even_CM_odd_CMC4-cm-S_odd_CM_odd_CMC4(rec)
-    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-cm-S_odd_CM_even_CMC4-c1
-    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-cm-S_odd_CM_even_CMC4-cm-S_even_CM_even_CMC4-c1
-    # S_START-c4-S_one_C4-cm-S_one_CMC4-c4-S_one_C4_odd_CMC4-cm-S_even_CMC4-cm-S_odd_CM_even_CMC4-cm-S_even_CM_even_CMC4-cm-S_odd_CM_even_CMC4(rec)
-    # S_START-c4-S_one_C4-cm-S_one_CMC4-cm-S_even_CM_one_CX(rec)
-    # S_START-cm-S_one_CM-c1
-    # S_START-cm-S_one_CM-c4-S_odd_C4CM-c1
-    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c1
-    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c4-S_even_C4CM-c1
-    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c4-S_even_C4CM-cm-S_one_CM_even_C4CM-c1
-    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c4-S_even_C4CM-cm-S_one_CM_even_C4CM-c4-S_odd_C4CM(rec)
-    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c4-S_even_C4CM-cm-S_one_CM_even_C4CM-cm-S_even_CM_even_C4CM-c1
-    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c4-S_even_C4CM-cm-S_one_CM_even_C4CM-cm-S_even_CM_even_C4CM-cm-S_odd_CM_even_C4CM-c1
-    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-c4-S_even_C4CM-cm-S_one_CM_even_C4CM-cm-S_even_CM_even_C4CM-cm-S_odd_CM_even_C4CM-cm-S_even_CM_even_C4CM(rec)
-    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-cm-S_even_CM_odd_C4CM-c1
-    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-cm-S_even_CM_odd_C4CM-cm-S_odd_CM_odd_C4CM-c1
-    # S_START-cm-S_one_CM-c4-S_odd_C4CM-cm-S_one_CM_odd_C4CM-cm-S_even_CM_odd_C4CM-cm-S_odd_CM_odd_C4CM-cm-S_even_CM_odd_C4CM(rec)
-    # S_START-cm-S_one_CM-cm-S_odd_CM_one_CX(rec)
-
-    scheck([c1], 1)
-    scheck([c2], 1)
-    scheck([c2, c1], 1)
-    scheck([c2, cm, c1], 2)
-    scheck([c2, cm, cm, c1], 1)
-    scheck([c2, cm, cm, cm], 2)
-    scheck([c4], 1)
-    scheck([c4, c1], 1)
-    scheck([c4, cm], 2)
-    fcheck([c4, cm, c1])
-    fcheck([c4, cm, c4, c1])
-    scheck([c4, cm, c4, cm], 4)
-    scheck([c4, cm, c4, cm, c1], 4)
-    scheck([c4, cm, c4, cm, c4], 4)
-    scheck([c4, cm, c4, cm, c4, c1], 4)
-    fcheck([c4, cm, c4, cm, c4, cm])
-    fcheck([c4, cm, c4, cm, c4, cm, c1])
-    fcheck([c4, cm, c4, cm, c4, cm, c4])
-    scheck([c4, cm, c4, cm, c4, cm, cm, c1], 4)
-    fcheck([c4, cm, c4, cm, c4, cm, cm, cm])
-    fcheck([c4, cm, c4, cm, c4, cm, cm, cm, c1])
-    scheck([c4, cm, c4, cm, c4, cm, cm, cm, cm], 4)
-    fcheck([c4, cm, c4, cm, cm, c1])
-    scheck([c4, cm, c4, cm, cm, cm], 4)
-    scheck([c4, cm, c4, cm, cm, cm, c1], 4)
-    fcheck([c4, cm, c4, cm, cm, cm, cm])
-    scheck([c4, cm, cm], 1)
-    scheck([cm], 1)
-    fcheck([cm, c1])
-    fcheck([cm, c4, c1])
-    scheck([cm, c4, cm], 3)
-    fcheck([cm, c4, cm, c1])
-    fcheck([cm, c4, cm, c4])
-    fcheck([cm, c4, cm, c4, c1])
-    fcheck([cm, c4, cm, c4, cm])
-    fcheck([cm, c4, cm, c4, cm, c1])
-    fcheck([cm, c4, cm, c4, cm, c4])
-    fcheck([cm, c4, cm, c4, cm, cm, c1])
-    fcheck([cm, c4, cm, c4, cm, cm, cm])
-    fcheck([cm, c4, cm, c4, cm, cm, cm, c1])
-    fcheck([cm, c4, cm, c4, cm, cm, cm, cm])
-    fcheck([cm, c4, cm, cm, c1])
-    fcheck([cm, c4, cm, cm, cm])
-    fcheck([cm, c4, cm, cm, cm, c1])
-    fcheck([cm, c4, cm, cm, cm, cm])
-    scheck([cm, cm], 2)
-  end
-end
diff --git a/test/ruby/test_gbk.rb b/test/ruby/test_gbk.rb
deleted file mode 100644
index d6dc5d6d1..000000000
--- a/test/ruby/test_gbk.rb
+++ /dev/null
@@ -1,28 +0,0 @@
-require "test/unit"
-
-class TestGBK < Test::Unit::TestCase
-  def s(s)
-    s.force_encoding("gbk")
-  end
-
-  def test_mbc_enc_len
-    assert_equal(1, s("\x81\x40").size)
-  end
-
-  def test_mbc_to_code
-    assert_equal(0x8140, s("\x81\x40").ord)
-  end
-
-  def test_code_to_mbc
-    assert_equal(s("\x81\x40"), 0x8140.chr("gbk"))
-  end
-
-  def test_mbc_case_fold
-    r = Regexp.new(s("(\x81\x40)\\1"), "i")
-    assert_match(r, s("\x81\x40\x81\x40"))
-  end
-
-  def test_left_adjust_char_head
-    assert_equal(s("\x81\x40"), s("\x81\x40\x81\x40").chop)
-  end
-end
diff --git a/test/ruby/test_iso_8859.rb b/test/ruby/test_iso_8859.rb
deleted file mode 100644
index 64cc7cd76..000000000
--- a/test/ruby/test_iso_8859.rb
+++ /dev/null
@@ -1,163 +0,0 @@
-require 'test/unit'
-
-class TestISO8859 < Test::Unit::TestCase
-  ASSERTS = %q(
-    assert_match(/^(\xdf)\1$/i, "\xdf\xdf")
-    assert_match(/^(\xdf)\1$/i, "ssss")
-    # assert_match(/^(\xdf)\1$/i, "\xdfss") # this must be bug...
-    assert_match(/^[\xdfz]+$/i, "sszzsszz")
-    assert_match(/^SS$/i, "\xdf")
-    assert_match(/^Ss$/i, "\xdf")
-    ((0xc0..0xde).to_a - [0xd7]).each do |c|
-      c1 = c.chr("ENCODING")
-      c2 = (c + 0x20).chr("ENCODING")
-      assert_match(/^(#{ c1 })\1$/i, c2 + c1)
-      assert_match(/^(#{ c2 })\1$/i, c1 + c2)
-      assert_match(/^[#{ c1 }]+$/i, c2 + c1)
-      assert_match(/^[#{ c2 }]+$/i, c1 + c2)
-    end
-    assert_match(/^\xff$/i, "\xff")
-  )
-
-  def test_iso_8859_1
-    eval("# encoding: iso8859-1\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-1"))
-  end
-
-  def test_iso_8859_2
-    eval("# encoding: iso8859-2\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-2"))
-  end
-
-  def test_iso_8859_3
-    eval(%q(# encoding: iso8859-3
-      assert_match(/^(\xdf)\1$/i, "\xdf\xdf")
-      assert_match(/^(\xdf)\1$/i, "ssss")
-      assert_match(/^[\xdfz]+$/i, "sszzsszz")
-      assert_match(/^SS$/i, "\xdf")
-      assert_match(/^Ss$/i, "\xdf")
-      [0xa1, 0xa6, *(0xa9..0xac), 0xaf].each do |c|
-        c1 = c.chr("iso8859-3")
-        c2 = (c + 0x10).chr("iso8859-3")
-        assert_match(/^(#{ c1 })\1$/i, c2 + c1)
-        assert_match(/^(#{ c2 })\1$/i, c1 + c2)
-        assert_match(/^[#{ c1 }]+$/i, c2 + c1)
-        assert_match(/^[#{ c2 }]+$/i, c1 + c2)
-      end
-      ([*(0xc0..0xde)] - [0xc3, 0xd0, 0xd7]).each do |c|
-        c1 = c.chr("iso8859-3")
-        c2 = (c + 0x20).chr("iso8859-3")
-        assert_match(/^(#{ c1 })\1$/i, c2 + c1)
-        assert_match(/^(#{ c2 })\1$/i, c1 + c2)
-        assert_match(/^[#{ c1 }]+$/i, c2 + c1)
-        assert_match(/^[#{ c2 }]+$/i, c1 + c2)
-      end
-    ))
-  end
-
-  def test_iso_8859_4
-    eval("# encoding: iso8859-4\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-4"))
-  end
-
-  def test_iso_8859_5
-    eval(%q(# encoding: iso8859-5
-      (0xb0..0xcf).each do |c|
-        c1 = c.chr("iso8859-5")
-        c2 = (c + 0x20).chr("iso8859-5")
-        assert_match(/^(#{ c1 })\1$/i, c2 + c1)
-        assert_match(/^(#{ c2 })\1$/i, c1 + c2)
-        assert_match(/^[#{ c1 }]+$/i, c2 + c1)
-        assert_match(/^[#{ c2 }]+$/i, c1 + c2)
-      end
-      ((0xa1..0xaf).to_a - [0xad]).each do |c|
-        c1 = c.chr("iso8859-5")
-        c2 = (c + 0x50).chr("iso8859-5")
-        assert_match(/^(#{ c1 })\1$/i, c2 + c1)
-        assert_match(/^(#{ c2 })\1$/i, c1 + c2)
-        assert_match(/^[#{ c1 }]+$/i, c2 + c1)
-        assert_match(/^[#{ c2 }]+$/i, c1 + c2)
-      end
-    ))
-  end
-
-  def test_iso_8859_6
-    eval(%q(# encoding: iso8859-6
-      [0xa4, 0xac, 0xbb, 0xbf, *(0xc1..0xda), *(0xe0..0xf2)].each do |c|
-        c1 = c.chr("iso8859-6")
-        assert_match(/^(#{ c1 })\1$/i, c1 * 2)
-      end
-    ))
-  end
-
-  def test_iso_8859_7
-    eval(%q(# encoding: iso8859-7
-      ((0xa0..0xfe).to_a - [0xae, 0xd2]).each do |c|
-        c1 = c.chr("iso8859-7")
-        assert_match(/^(#{ c1 })\1$/i, c1 * 2)
-      end
-      ((0xc1..0xd9).to_a - [0xd2]).each do |c|
-        c1 = c.chr("iso8859-7")
-        c2 = (c + 0x20).chr("iso8859-7")
-        assert_match(/^(#{ c1 })\1$/i, c2 + c1)
-        assert_match(/^(#{ c2 })\1$/i, c1 + c2)
-        assert_match(/^[#{ c1 }]+$/i, c2 + c1)
-        assert_match(/^[#{ c2 }]+$/i, c1 + c2)
-      end
-    ))
-  end
-
-  def test_iso_8859_8
-    eval(%q(# encoding: iso8859-8
-      [0xa0, *(0xa2..0xbe), *(0xdf..0xfa), 0xfc, 0xfd].each do |c|
-        c1 = c.chr("iso8859-8")
-        assert_match(/^(#{ c1 })\1$/i, c1 * 2)
-      end
-    ))
-  end
-
-  def test_iso_8859_9
-    eval(%q(# encoding: iso8859-9
-      assert_match(/^(\xdf)\1$/i, "\xdf\xdf")
-      assert_match(/^(\xdf)\1$/i, "ssss")
-      assert_match(/^[\xdfz]+$/i, "sszzsszz")
-      assert_match(/^SS$/i, "\xdf")
-      assert_match(/^Ss$/i, "\xdf")
-      ([*(0xc0..0xdc)] - [0xd7]).each do |c|
-        c1 = c.chr("iso8859-9")
-        c2 = (c + 0x20).chr("iso8859-9")
-        assert_match(/^(#{ c1 })\1$/i, c2 + c1)
-        assert_match(/^(#{ c2 })\1$/i, c1 + c2)
-        assert_match(/^[#{ c1 }]+$/i, c2 + c1)
-        assert_match(/^[#{ c2 }]+$/i, c1 + c2)
-      end
-    ))
-  end
-
-  def test_iso_8859_10
-    eval("# encoding: iso8859-10\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-10"))
-  end
-
-  def test_iso_8859_11
-    eval(%q(# encoding: iso8859-11
-      [*(0xa0..0xda), *(0xdf..0xfb)].each do |c|
-        c1 = c.chr("iso8859-11")
-        assert_match(/^(#{ c1 })\1$/i, c1 * 2)
-      end
-    ))
-  end
-
-  def test_iso_8859_13
-    eval("# encoding: iso8859-13\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-13"))
-  end
-
-  def test_iso_8859_14
-    eval("# encoding: iso8859-14\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-14"))
-  end
-
-  def test_iso_8859_15
-    eval("# encoding: iso8859-15\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-15"))
-  end
-
-  def test_iso_8859_16
-    eval("# encoding: iso8859-16\n" + ASSERTS.gsub(/ENCODING/m, "iso8859-16"))
-  end
-end
-
diff --git a/test/ruby/test_shift_jis.rb b/test/ruby/test_shift_jis.rb
deleted file mode 100644
index f81cb7801..000000000
--- a/test/ruby/test_shift_jis.rb
+++ /dev/null
@@ -1,27 +0,0 @@
-# vim: set fileencoding=shift_jis
-
-require "test/unit"
-
-class TestShiftJIS < Test::Unit::TestCase
-  def test_mbc_case_fold
-    assert_match(/(��)(a)\1\2/i, "��a��A")
-    assert_no_match(/(��)(a)\1\2/i, "��a�`A")
-  end
-
-  def test_property
-    assert_match(/��{0}\p{Hiragana}{4}/, "��������")
-    assert_no_match(/��{0}\p{Hiragana}{4}/, "�J�^�J�i")
-    assert_no_match(/��{0}\p{Hiragana}{4}/, "��������")
-    assert_no_match(/��{0}\p{Katakana}{4}/, "��������")
-    assert_match(/��{0}\p{Katakana}{4}/, "�J�^�J�i")
-    assert_no_match(/��{0}\p{Katakana}{4}/, "��������")
-    assert_raise(RegexpError) { Regexp.new('��{0}\p{foobarbaz}') }
-  end
-
-  def test_code_to_mbclen
-    s = "����������"
-    s << 0x82a9
-    assert_equal("������������", s)
-    assert_raise(ArgumentError) { s << 0x82 }
-  end
-end
diff --git a/test/ruby/test_utf16.rb b/test/ruby/test_utf16.rb
deleted file mode 100644
index c10463b2b..000000000
--- a/test/ruby/test_utf16.rb
+++ /dev/null
@@ -1,358 +0,0 @@
-require 'test/unit'
-
-class TestUTF16 < Test::Unit::TestCase
-  def encdump(str)
-    d = str.dump
-    if /\.force_encoding\("[A-Za-z0-9.:_+-]*"\)\z/ =~ d
-      d
-    else
-      "#{d}.force_encoding(#{str.encoding.name.dump})"
-    end
-  end
-
-  def enccall(recv, meth, *args)
-    desc = ''
-    if String === recv
-      desc << encdump(recv)
-    else
-      desc << recv.inspect
-    end
-    desc << '.' << meth.to_s
-    if !args.empty?
-      desc << '('
-      args.each_with_index {|a, i|
-        desc << ',' if 0 < i
-        if String === a
-          desc << encdump(a)
-        else
-          desc << a.inspect
-        end
-      }
-      desc << ')'
-    end
-    result = nil
-    assert_nothing_raised(desc) {
-      result = recv.send(meth, *args)
-    }
-    result
-  end
-
-  def assert_str_equal(expected, actual, message=nil)
-    full_message = build_message(message, <<EOT)
-#{encdump expected} expected but not equal to
-#{encdump actual}.
-EOT
-    assert_block(full_message) { expected == actual }
-  end
-
-  # tests start
-
-  def test_utf16be_valid_encoding
-    [
-      "\x00\x00",
-      "\xd7\xff",
-      "\xd8\x00\xdc\x00",
-      "\xdb\xff\xdf\xff",
-      "\xe0\x00",
-      "\xff\xff",
-    ].each {|s|
-      s.force_encoding("utf-16be")
-      assert_equal(true, s.valid_encoding?, "#{encdump s}.valid_encoding?")
-    }
-    [
-      "\x00",
-      "\xd7",
-      "\xd8\x00",
-      "\xd8\x00\xd8\x00",
-      "\xdc\x00",
-      "\xdc\x00\xd8\x00",
-      "\xdc\x00\xdc\x00",
-      "\xe0",
-      "\xff",
-    ].each {|s|
-      s.force_encoding("utf-16be")
-      assert_equal(false, s.valid_encoding?, "#{encdump s}.valid_encoding?")
-    }
-  end
-
-  def test_utf16le_valid_encoding
-    [
-      "\x00\x00",
-      "\xff\xd7",
-      "\x00\xd8\x00\xdc",
-      "\xff\xdb\xff\xdf",
-      "\x00\xe0",
-      "\xff\xff",
-    ].each {|s|
-      s.force_encoding("utf-16le")
-      assert_equal(true, s.valid_encoding?, "#{encdump s}.valid_encoding?")
-    }
-    [
-      "\x00",
-      "\xd7",
-      "\x00\xd8",
-      "\x00\xd8\x00\xd8",
-      "\x00\xdc",
-      "\x00\xdc\x00\xd8",
-      "\x00\xdc\x00\xdc",
-      "\xe0",
-      "\xff",
-    ].each {|s|
-      s.force_encoding("utf-16le")
-      assert_equal(false, s.valid_encoding?, "#{encdump s}.valid_encoding?")
-    }
-  end
-
-  def test_strftime
-    s = "aa".force_encoding("utf-16be")
-    assert_raise(ArgumentError, "Time.now.strftime(#{encdump s})") { Time.now.strftime(s) }
-  end
-
-  def test_intern
-    s = "aaaa".force_encoding("utf-16be")
-    assert_equal(s.encoding, s.intern.to_s.encoding, "#{encdump s}.intern.to_s.encoding")
-  end
-
-  def test_sym_eq
-    s = "aa".force_encoding("utf-16le")
-    assert(s.intern != :aa, "#{encdump s}.intern != :aa")
-  end
-
-  def test_compatible
-    s1 = "aa".force_encoding("utf-16be")
-    s2 = "z".force_encoding("us-ascii")
-    assert_nil(Encoding.compatible?(s1, s2), "Encoding.compatible?(#{encdump s1}, #{encdump s2})")
-  end
-
-  def test_casecmp
-    s1 = "aa".force_encoding("utf-16be")
-    s2 = "AA"
-    assert_not_equal(0, s1.casecmp(s2), "#{encdump s1}.casecmp(#{encdump s2})")
-  end
-
-  def test_end_with
-    s1 = "ab".force_encoding("utf-16be")
-    s2 = "b".force_encoding("utf-16be")
-    assert_equal(false, s1.end_with?(s2), "#{encdump s1}.end_with?(#{encdump s2})")
-  end
-
-  def test_hex
-    assert_raise(ArgumentError) {
-      "ff".encode("utf-16le").hex
-    }
-    assert_raise(ArgumentError) {
-      "ff".encode("utf-16be").hex
-    }
-  end
-
-  def test_oct
-    assert_raise(ArgumentError) {
-      "77".encode("utf-16le").oct
-    }
-    assert_raise(ArgumentError) {
-      "77".encode("utf-16be").oct
-    }
-  end
-
-  def test_count
-    s1 = "aa".force_encoding("utf-16be")
-    s2 = "aa"
-    assert_raise(ArgumentError, "#{encdump s1}.count(#{encdump s2})") {
-      s1.count(s2)
-    }
-  end
-
-  def test_plus
-    s1 = "a".force_encoding("us-ascii")
-    s2 = "aa".force_encoding("utf-16be")
-    assert_raise(ArgumentError, "#{encdump s1} + #{encdump s2}") {
-      s1 + s2
-    }
-  end
-
-  def test_encoding_find
-    assert_raise(ArgumentError) {
-      Encoding.find("utf-8".force_encoding("utf-16be"))
-    }
-  end
-
-  def test_interpolation
-    s = "aa".force_encoding("utf-16be")
-    assert_raise(ArgumentError, "\"a\#{#{encdump s}}\"") {
-      "a#{s}"
-    }
-  end
-
-  def test_slice!
-    enccall("aa".force_encoding("UTF-16BE"), :slice!, -1)
-  end
-
-  def test_plus_empty1
-    s1 = ""
-    s2 = "aa".force_encoding("utf-16be")
-    assert_nothing_raised("#{encdump s1} << #{encdump s2}") {
-      s1 + s2
-    }
-  end
-
-  def test_plus_empty2
-    s1 = "aa"
-    s2 = "".force_encoding("utf-16be")
-    assert_nothing_raised("#{encdump s1} << #{encdump s2}") {
-      s1 + s2
-    }
-  end
-
-  def test_plus_nonempty
-    s1 = "aa"
-    s2 = "bb".force_encoding("utf-16be")
-    assert_raise(ArgumentError, "#{encdump s1} << #{encdump s2}") {
-      s1 + s2
-    }
-  end
-
-  def test_concat_empty1
-    s1 = ""
-    s2 = "aa".force_encoding("utf-16be")
-    assert_nothing_raised("#{encdump s1} << #{encdump s2}") {
-      s1 << s2
-    }
-  end
-
-  def test_concat_empty2
-    s1 = "aa"
-    s2 = "".force_encoding("utf-16be")
-    assert_nothing_raised("#{encdump s1} << #{encdump s2}") {
-      s1 << s2
-    }
-  end
-
-  def test_concat_nonempty
-    s1 = "aa"
-    s2 = "bb".force_encoding("utf-16be")
-    assert_raise(ArgumentError, "#{encdump s1} << #{encdump s2}") {
-      s1 << s2
-    }
-  end
-
-  def test_chomp
-    s = "\1\n".force_encoding("utf-16be")
-    assert_equal(s, s.chomp, "#{encdump s}.chomp")
-    s = "\0\n".force_encoding("utf-16be")
-    assert_equal("", s.chomp, "#{encdump s}.chomp")
-    s = "\0\r\0\n".force_encoding("utf-16be")
-    assert_equal("", s.chomp, "#{encdump s}.chomp")
-  end
-
-  def test_succ
-    s = "\xff\xff".force_encoding("utf-16be")
-    assert(s.succ.valid_encoding?, "#{encdump s}.succ.valid_encoding?")
-
-    s = "\xdb\xff\xdf\xff".force_encoding("utf-16be")
-    assert(s.succ.valid_encoding?, "#{encdump s}.succ.valid_encoding?")
-  end
-
-  def test_regexp_union
-    enccall(Regexp, :union, "aa".force_encoding("utf-16be"), "bb".force_encoding("utf-16be"))
-  end
-
-  def test_empty_regexp
-    s = "".force_encoding("utf-16be")
-    assert_equal(Encoding.find("utf-16be"), Regexp.new(s).encoding,
-                "Regexp.new(#{encdump s}).encoding")
-  end
-
-  def test_regexp_match
-    assert_raise(ArgumentError) { Regexp.new("aa".force_encoding("utf-16be")) =~ "aa" }
-  end
-
-  def test_gsub
-    s = "abcd".force_encoding("utf-16be")
-    assert_nothing_raised {
-      s.gsub(Regexp.new(".".encode("utf-16be")), "xy")
-    }
-    s = "ab\0\ncd".force_encoding("utf-16be")
-    assert_raise(ArgumentError) {
-      s.gsub(Regexp.new(".".encode("utf-16be")), "xy")
-    }
-  end
-
-  def test_split_awk
-    s = " ab cd ".encode("utf-16be")
-    r = s.split(" ".encode("utf-16be"))
-    assert_equal(2, r.length)
-    assert_str_equal("ab".encode("utf-16be"), r[0])
-    assert_str_equal("cd".encode("utf-16be"), r[1])
-  end
-
-  def test_count2
-    e = "abc".count("^b")
-    assert_equal(e, "abc".encode("utf-16be").count("^b".encode("utf-16be")))
-    assert_equal(e, "abc".encode("utf-16le").count("^b".encode("utf-16le")))
-  end
-
-  def test_header
-    assert_raise(ArgumentError) { eval("# encoding:utf-16le\nfoo") }
-    assert_raise(ArgumentError) { eval("# encoding:utf-16be\nfoo") }
-  end
-
-
-  def test_is_mbc_newline
-    sl = "f\0o\0o\0\n\0b\0a\0r\0\n\0b\0a\0z\0\n\0".force_encoding("utf-16le")
-    sb = "\0f\0o\0o\0\n\0b\0a\0r\0\n\0b\0a\0z\0\n".force_encoding("utf-16be")
-    al = sl.lines.to_a
-    ab = sb.lines.to_a
-    assert_equal("f\0o\0o\0\n\0".force_encoding("utf-16le"), al.shift)
-    assert_equal("b\0a\0r\0\n\0".force_encoding("utf-16le"), al.shift)
-    assert_equal("b\0a\0z\0\n\0".force_encoding("utf-16le"), al.shift)
-    assert_equal("\0f\0o\0o\0\n".force_encoding("utf-16be"), ab.shift)
-    assert_equal("\0b\0a\0r\0\n".force_encoding("utf-16be"), ab.shift)
-    assert_equal("\0b\0a\0z\0\n".force_encoding("utf-16be"), ab.shift)
-
-    sl = "f\0o\0o\0\n\0".force_encoding("utf-16le")
-    sb = "\0f\0o\0o\0\n".force_encoding("utf-16be")
-    sl2 = "f\0o\0o\0".force_encoding("utf-16le")
-    sb2 = "\0f\0o\0o".force_encoding("utf-16be")
-    assert_equal(sl2, sl.chomp)
-    assert_equal(sl2, sl.chomp.chomp)
-    assert_equal(sb2, sb.chomp)
-    assert_equal(sb2, sb.chomp.chomp)
-
-    sl = "f\0o\0o\0\n".force_encoding("utf-16le")
-    sb = "\0f\0o\0o\n".force_encoding("utf-16be")
-    assert_equal(sl, sl.chomp)
-    assert_equal(sb, sb.chomp)
-  end
-
-  def test_code_to_mbc
-    assert_equal("a\0".force_encoding("utf-16le"), "a".ord.chr("utf-16le"))
-    assert_equal("\0a".force_encoding("utf-16be"), "a".ord.chr("utf-16be"))
-  end
-
-  def utf8_to_utf16(s, e)
-    s.chars.map {|c| c.ord.chr(e) }.join
-  end
-
-  def test_mbc_case_fold
-    rl = Regexp.new(utf8_to_utf16("^(\u3042)(a)\\1\\2$", "utf-16le"), "i")
-    rb = Regexp.new(utf8_to_utf16("^(\u3042)(a)\\1\\2$", "utf-16be"), "i")
-    assert_equal(Encoding.find("utf-16le"), rl.encoding)
-    assert_equal(Encoding.find("utf-16be"), rb.encoding)
-    assert_match(rl, utf8_to_utf16("\u3042a\u3042a", "utf-16le"))
-    assert_match(rb, utf8_to_utf16("\u3042a\u3042a", "utf-16be"))
-  end
-
-  def test_surrogate_pair
-    sl = "\x42\xd8\xb7\xdf".force_encoding("utf-16le")
-    sb = "\xd8\x42\xdf\xb7".force_encoding("utf-16be")
-
-    assert_equal(1, sl.size)
-    assert_equal(1, sb.size)
-    assert_equal(0x20bb7, sl.ord)
-    assert_equal(0x20bb7, sb.ord)
-    assert_equal(sl, 0x20bb7.chr("utf-16le"))
-    assert_equal(sb, 0x20bb7.chr("utf-16be"))
-    assert_equal("", sl.chop)
-    assert_equal("", sb.chop)
-  end
-end
diff --git a/test/ruby/test_utf32.rb b/test/ruby/test_utf32.rb
deleted file mode 100644
index 3d4a45851..000000000
--- a/test/ruby/test_utf32.rb
+++ /dev/null
@@ -1,93 +0,0 @@
-require 'test/unit'
-
-class TestUTF32 < Test::Unit::TestCase
-  def encdump(str)
-    d = str.dump
-    if /\.force_encoding\("[A-Za-z0-9.:_+-]*"\)\z/ =~ d
-      d
-    else
-      "#{d}.force_encoding(#{str.encoding.name.dump})"
-    end
-  end
-
-  def assert_str_equal(expected, actual, message=nil)
-    full_message = build_message(message, <<EOT)
-#{encdump expected} expected but not equal to
-#{encdump actual}.
-EOT
-    assert_block(full_message) { expected == actual }
-  end
-
-  def test_substr
-    assert_str_equal(
-      "abcdefgh".force_encoding("utf-32le"),
-      "abcdefgh".force_encoding("utf-32le")[0,3])
-    assert_str_equal(
-      "abcdefgh".force_encoding("utf-32be"),
-      "abcdefgh".force_encoding("utf-32be")[0,3])
-  end
-
-  def test_mbc_len
-    al = "abcdefghijkl".force_encoding("utf-32le").each_char.to_a
-    ab = "abcdefghijkl".force_encoding("utf-32be").each_char.to_a
-    assert_equal("abcd".force_encoding("utf-32le"), al.shift)
-    assert_equal("efgh".force_encoding("utf-32le"), al.shift)
-    assert_equal("ijkl".force_encoding("utf-32le"), al.shift)
-    assert_equal("abcd".force_encoding("utf-32be"), ab.shift)
-    assert_equal("efgh".force_encoding("utf-32be"), ab.shift)
-    assert_equal("ijkl".force_encoding("utf-32be"), ab.shift)
-  end
-
-  def ascii_to_utf16le(s)
-    s.unpack("C*").map {|x| [x,0,0,0] }.flatten.pack("C*").force_encoding("utf-32le")
-  end
-
-  def ascii_to_utf16be(s)
-    s.unpack("C*").map {|x| [0,0,0,x] }.flatten.pack("C*").force_encoding("utf-32be")
-  end
-
-  def test_mbc_newline
-    al = ascii_to_utf16le("foo\nbar\nbaz\n").lines.to_a
-    ab = ascii_to_utf16be("foo\nbar\nbaz\n").lines.to_a
-
-    assert_equal(ascii_to_utf16le("foo\n"), al.shift)
-    assert_equal(ascii_to_utf16le("bar\n"), al.shift)
-    assert_equal(ascii_to_utf16le("baz\n"), al.shift)
-    assert_equal(ascii_to_utf16be("foo\n"), ab.shift)
-    assert_equal(ascii_to_utf16be("bar\n"), ab.shift)
-    assert_equal(ascii_to_utf16be("baz\n"), ab.shift)
-
-    sl = "a\0".force_encoding("utf-32le")
-    sb = "a\0".force_encoding("utf-32be")
-    assert_equal(sl, sl.chomp)
-    assert_equal(sb, sb.chomp)
-  end
-
-  def test_mbc_to_code
-    sl = "a\0\0\0".force_encoding("utf-32le")
-    sb = "\0\0\0a".force_encoding("utf-32be")
-    assert_equal("a".ord, sl.ord)
-    assert_equal("a".ord, sb.ord)
-  end
-
-  def utf8_to_utf32(s, e)
-    s.chars.map {|c| c.ord.chr(e) }.join
-  end
-
-  def test_mbc_case_fold
-    rl = Regexp.new(utf8_to_utf32("^(\u3042)(a)\\1\\2$", "utf-32le"), "i")
-    rb = Regexp.new(utf8_to_utf32("^(\u3042)(a)\\1\\2$", "utf-32be"), "i")
-    assert_equal(Encoding.find("utf-32le"), rl.encoding)
-    assert_equal(Encoding.find("utf-32be"), rb.encoding)
-    assert_match(rl, utf8_to_utf32("\u3042a\u3042a", "utf-32le"))
-    assert_match(rb, utf8_to_utf32("\u3042a\u3042a", "utf-32be"))
-  end
-
-  def test_code_to_mbc
-    sl = "a\0\0\0".force_encoding("utf-32le")
-    sb = "\0\0\0a".force_encoding("utf-32be")
-    assert_equal(sl, "a".ord.chr("utf-32le"))
-    assert_equal(sb, "a".ord.chr("utf-32be"))
-  end
-end
-
diff --git a/test/ruby/test_windows_1251.rb b/test/ruby/test_windows_1251.rb
deleted file mode 100644
index 6fbf3159a..000000000
--- a/test/ruby/test_windows_1251.rb
+++ /dev/null
@@ -1,16 +0,0 @@
-# encoding:windows-1251
-
-require "test/unit"
-
-class TestWindows1251 < Test::Unit::TestCase
-  def test_windows_1251
-    (0xc0..0xdf).each do |c|
-      c1 = c.chr("windows-1251")
-      c2 = (c + 0x20).chr("windows-1251")
-      assert_match(/^(#{ c1 })\1$/i, c2 + c1)
-      assert_match(/^(#{ c2 })\1$/i, c1 + c2)
-      assert_match(/^[#{ c1 }]+$/i, c2 + c1)
-      assert_match(/^[#{ c2 }]+$/i, c1 + c2)
-    end
-  end
-end
-- 
cgit