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Diffstat (limited to 'activesupport/test/multibyte_handler_test.rb')
-rw-r--r-- | activesupport/test/multibyte_handler_test.rb | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/activesupport/test/multibyte_handler_test.rb b/activesupport/test/multibyte_handler_test.rb new file mode 100644 index 0000000000..08291c1212 --- /dev/null +++ b/activesupport/test/multibyte_handler_test.rb @@ -0,0 +1,261 @@ +require File.dirname(__FILE__) + '/abstract_unit' + +$KCODE = 'UTF8' + +class String + # Unicode Inspect returns the codepoints of the string in hex + def ui + "#{self} " + ("[%s]" % unpack("U*").map{|cp| cp.to_s(16) }.join(' ')) + end unless ''.respond_to?(:ui) +end + +module UTF8HandlingTest + + def common_setup + # This is an ASCII string with some russian strings and a ligature. It's nicely calibrated, because + # slicing it at some specific bytes will kill your characters if you use standard Ruby routines. + # It has both capital and standard letters, so that we can test case conversions easily. + # It has 26 charactes and 28 when the ligature gets split during normalization. + @string = "Abcd Блå ffi бла бла бла бла" + @string_kd = "Abcd Блå ffi бла бла бла бла" + @string_kc = "Abcd Блå ffi бла бла бла бла" + @string_c = "Abcd Блå ffi бла бла бла бла" + @string_d = "Abcd Блå ffi бла бла бла бла" + @bytestring = "\270\236\010\210\245" # Not UTF-8 + + # Characters from the character classes as described in UAX #29 + @character_from_class = { + :l => 0x1100, :v => 0x1160, :t => 0x11A8, :lv => 0xAC00, :lvt => 0xAC01, :cr => 0x000D, :lf => 0x000A, + :extend => 0x094D, :n => 0x64 + } + end + + def test_utf8_recognition + assert ActiveSupport::Multibyte::Handlers::UTF8Handler.consumes?(@string), + "Should recognize as a valid UTF-8 string" + assert !ActiveSupport::Multibyte::Handlers::UTF8Handler.consumes?(@bytestring), "This is bytestring, not UTF-8" + end + + def test_simple_normalization + # Normalization of DEVANAGARI LETTER QA breaks when composition exclusion isn't used correctly + assert_equal [0x915, 0x93c].pack('U*').ui, [0x915, 0x93c].pack('U*').chars.normalize(:c).to_s.ui + + null_byte_str = "Test\0test" + + assert_equal '', @handler.normalize(''), "Empty string should not break things" + assert_equal null_byte_str.ui, @handler.normalize(null_byte_str, :kc).ui, "Null byte should remain" + assert_equal null_byte_str.ui, @handler.normalize(null_byte_str, :c).ui, "Null byte should remain" + assert_equal null_byte_str.ui, @handler.normalize(null_byte_str, :d).ui, "Null byte should remain" + assert_equal null_byte_str.ui, @handler.normalize(null_byte_str, :kd).ui, "Null byte should remain" + assert_equal null_byte_str.ui, @handler.decompose(null_byte_str).ui, "Null byte should remain" + assert_equal null_byte_str.ui, @handler.compose(null_byte_str).ui, "Null byte should remain" + + comp_str = [ + 44, # LATIN CAPITAL LETTER D + 307, # COMBINING DOT ABOVE + 328, # COMBINING OGONEK + 323 # COMBINING DOT BELOW + ].pack("U*") + norm_str_KC = [44,105,106,328,323].pack("U*") + norm_str_C = [44,307,328,323].pack("U*") + norm_str_D = [44,307,110,780,78,769].pack("U*") + norm_str_KD = [44,105,106,110,780,78,769].pack("U*") + + assert_equal norm_str_KC.ui, @handler.normalize(comp_str, :kc).ui, "Should normalize KC" + assert_equal norm_str_C.ui, @handler.normalize(comp_str, :c).ui, "Should normalize C" + assert_equal norm_str_D.ui, @handler.normalize(comp_str, :d).ui, "Should normalize D" + assert_equal norm_str_KD.ui, @handler.normalize(comp_str, :kd).ui, "Should normalize KD" + + assert_raise(ActiveSupport::Multibyte::Handlers::EncodingError) { @handler.normalize(@bytestring) } + end + + # Test for the Public Review Issue #29, bad explaination of composition might lead to a + # bad implementation: http://www.unicode.org/review/pr-29.html + def test_normalization_C_pri_29 + [ + [0x0B47, 0x0300, 0x0B3E], + [0x1100, 0x0300, 0x1161] + ].map { |c| c.pack('U*') }.each do |c| + assert_equal c.ui, @handler.normalize(c, :c).ui, "Composition is implemented incorrectly" + end + end + + def test_casefolding + simple_str = "abCdef" + simple_str_upcase = "ABCDEF" + simple_str_downcase = "abcdef" + + assert_equal '', @handler.downcase(@handler.upcase('')), "Empty string should not break things" + assert_equal simple_str_upcase, @handler.upcase(simple_str), "should upcase properly" + assert_equal simple_str_downcase, @handler.downcase(simple_str), "should downcase properly" + assert_equal simple_str_downcase, @handler.downcase(@handler.upcase(simple_str_downcase)), "upcase and downcase should be mirrors" + + rus_str = "аБвгд\0f" + rus_str_upcase = "АБВГД\0F" + rus_str_downcase = "абвгд\0f" + assert_equal rus_str_upcase, @handler.upcase(rus_str), "should upcase properly honoring null-byte" + assert_equal rus_str_downcase, @handler.downcase(rus_str), "should downcase properly honoring null-byte" + + jap_str = "の埋め込み化対応はほぼ完成" + assert_equal jap_str, @handler.upcase(jap_str), "Japanse has no upcase, should remain unchanged" + assert_equal jap_str, @handler.downcase(jap_str), "Japanse has no downcase, should remain unchanged" + + assert_raise(ActiveSupport::Multibyte::Handlers::EncodingError) { @handler.upcase(@bytestring) } + end + + def test_capitalize + { 'аБвг аБвг' => 'Абвг абвг', + 'аБвг АБВГ' => 'Абвг абвг', + 'АБВГ АБВГ' => 'Абвг абвг', + '' => '' }.each do |f,t| + assert_equal t, @handler.capitalize(f), "Capitalize should work as expected" + end + assert_raise(ActiveSupport::Multibyte::Handlers::EncodingError) { @handler.capitalize(@bytestring) } + end + + def test_translate_offset + str = "Блaå" # [2, 2, 1, 2] bytes + assert_equal 0, @handler.translate_offset('', 0), "Offset for an empty string makes no sense, return 0" + assert_equal 0, @handler.translate_offset(str, 0), "First character, first byte" + assert_equal 0, @handler.translate_offset(str, 1), "First character, second byte" + assert_equal 1, @handler.translate_offset(str, 2), "Second character, third byte" + assert_equal 1, @handler.translate_offset(str, 3), "Second character, fourth byte" + assert_equal 2, @handler.translate_offset(str, 4), "Third character, fifth byte" + assert_equal 3, @handler.translate_offset(str, 5), "Fourth character, sixth byte" + assert_equal 3, @handler.translate_offset(str, 6), "Fourth character, seventh byte" + assert_raise(ActiveSupport::Multibyte::Handlers::EncodingError) { @handler.translate_offset(@bytestring, 3) } + end + + def test_insert + assert_equal '', @handler.insert('', 0, ''), "Empty string should not break things" + assert_equal "Abcd Блå ffiБУМ бла бла бла бла", @handler.insert(@string, 10, "БУМ"), + "Text should be inserted at right codepoints" + assert_equal "Abcd Блå ffiБУМ бла бла бла бла", @string, "Insert should be destructive" + assert_raise(ActiveSupport::Multibyte::Handlers::EncodingError) do + @handler.insert(@bytestring, 2, "\210") + end + end + + def test_reverse + str = "wБлåa \n" + rev = "\n aåлБw" + assert_equal '', @handler.reverse(''), "Empty string shouldn't change" + assert_equal rev.ui, @handler.reverse(str).ui, "Should reverse properly" + assert_raise(ActiveSupport::Multibyte::Handlers::EncodingError) { @handler.reverse(@bytestring) } + end + + def test_size + assert_equal 0, @handler.size(''), "Empty string has size 0" + assert_equal 26, @handler.size(@string), "String length should be 26" + assert_equal 26, @handler.length(@string), "String length method should be properly aliased" + assert_raise(ActiveSupport::Multibyte::Handlers::EncodingError) { @handler.size(@bytestring) } + end + + def test_slice + assert_equal 0x41, @handler.slice(@string, 0), "Singular characters should return codepoints" + assert_equal 0xE5, @handler.slice(@string, 7), "Singular characters should return codepoints" + assert_equal nil, @handler.slice('', -1..1), "Broken range should return nil" + assert_equal '', @handler.slice('', 0..10), "Empty string should not break things" + assert_equal "d Блå ffi", @handler.slice(@string, 3..9), "Unicode characters have to be returned" + assert_equal " Блå ffi ", @handler.slice(@string, 4..10), "Unicode characters have to be returned" + assert_equal "", @handler.slice(@string, 7..6), "Range is empty, should return an empty string" + assert_raise(ActiveSupport::Multibyte::Handlers::EncodingError) { @handler.slice(@bytestring, 2..3) } + end + + def test_grapheme_cluster_length + assert_equal 0, @handler.g_length(''), "String should count 0 grapheme clusters" + assert_equal 2, @handler.g_length([0x0924, 0x094D, 0x0930].pack('U*')), "String should count 2 grapheme clusters" + assert_equal 1, @handler.g_length(string_from_classes(%w(cr lf))), "Don't cut between CR and LF" + assert_equal 1, @handler.g_length(string_from_classes(%w(l l))), "Don't cut between L" + assert_equal 1, @handler.g_length(string_from_classes(%w(l v))), "Don't cut between L and V" + assert_equal 1, @handler.g_length(string_from_classes(%w(l lv))), "Don't cut between L and LV" + assert_equal 1, @handler.g_length(string_from_classes(%w(l lvt))), "Don't cut between L and LVT" + assert_equal 1, @handler.g_length(string_from_classes(%w(lv v))), "Don't cut between LV and V" + assert_equal 1, @handler.g_length(string_from_classes(%w(lv t))), "Don't cut between LV and T" + assert_equal 1, @handler.g_length(string_from_classes(%w(v v))), "Don't cut between V and V" + assert_equal 1, @handler.g_length(string_from_classes(%w(v t))), "Don't cut between V and T" + assert_equal 1, @handler.g_length(string_from_classes(%w(lvt t))), "Don't cut between LVT and T" + assert_equal 1, @handler.g_length(string_from_classes(%w(t t))), "Don't cut between T and T" + assert_equal 1, @handler.g_length(string_from_classes(%w(n extend))), "Don't cut before Extend" + assert_equal 2, @handler.g_length(string_from_classes(%w(n n))), "Cut between normal characters" + assert_equal 3, @handler.g_length(string_from_classes(%w(n cr lf n))), "Don't cut between CR and LF" + assert_equal 2, @handler.g_length(string_from_classes(%w(n l v t))), "Don't cut between L, V and T" + assert_raise(ActiveSupport::Multibyte::Handlers::EncodingError) { @handler.g_length(@bytestring) } + end + + def test_index + s = "Καλημέρα κόσμε!" + assert_equal 0, @handler.index('', ''), "The empty string is always found at the beginning of the string" + assert_equal 0, @handler.index('haystack', ''), "The empty string is always found at the beginning of the string" + assert_equal 0, @handler.index(s, 'Κ'), "Greek K is at 0" + assert_equal 1, @handler.index(s, 'α'), "Greek Alpha is at 1" + + assert_equal nil, @handler.index(@bytestring, 'a') + assert_raise(ActiveSupport::Multibyte::Handlers::EncodingError) { @handler.index(@bytestring, "\010") } + end + + def test_strip + # A unicode aware version of strip should strip all 26 types of whitespace. This includes the NO BREAK SPACE + # aka BOM (byte order mark). The byte order mark has no place in UTF-8 because it's used to detect LE and BE. + b = "\n" + [ + 32, # SPACE + 8195, # EM SPACE + 8199, # FIGURE SPACE, + 8201, # THIN SPACE + 8202, # HAIR SPACE + 65279, # NO BREAK SPACE (ZW) + ].pack('U*') + m = "word блин\n\n\n word" + e = [ + 65279, # NO BREAK SPACE (ZW) + 8201, # THIN SPACE + 8199, # FIGURE SPACE, + 32, # SPACE + ].pack('U*') + string = b+m+e + + assert_equal '', @handler.strip(''), "Empty string should stay empty" + assert_equal m+e, @handler.lstrip(string), "Whitespace should be gone on the left" + assert_equal b+m, @handler.rstrip(string), "Whitespace should be gone on the right" + assert_equal m, @handler.strip(string), "Whitespace should be stripped on both sides" + + bs = "\n #{@bytestring} \n\n" + assert_equal @bytestring, @handler.strip(bs), "Invalid unicode strings should still strip" + end + + def test_tidy_bytes + assert_equal "\010", @handler.tidy_bytes(@bytestring) + assert_equal "a\010a", @handler.tidy_bytes('a' + @bytestring + 'a') + assert_nothing_raised { @handler.tidy_bytes(@bytestring).unpack('U*') } + end + + protected + + def string_from_classes(classes) + classes.collect do |k| + @character_from_class[k.intern] + end.pack('U*') + end +end + + +begin + require_library_or_gem('utf8proc_native') + require 'active_record/multibyte/handlers/utf8_handler_proc' + class UTF8HandlingTestProc < Test::Unit::TestCase + include UTF8HandlingTest + def setup + common_setup + @handler = ::ActiveSupport::Multibyte::Handlers::UTF8HandlerProc + end + end +rescue LoadError +end + +class UTF8HandlingTestPure < Test::Unit::TestCase + include UTF8HandlingTest + def setup + common_setup + @handler = ::ActiveSupport::Multibyte::Handlers::UTF8Handler + end +end
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