* test/ruby/enc: moved tests for particular encodings.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@18095 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

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