require "abstract_unit" require "multibyte_test_helpers" require "active_support/core_ext/string/multibyte" class MultibyteCharsTest < ActiveSupport::TestCase include MultibyteTestHelpers def setup @proxy_class = ActiveSupport::Multibyte::Chars @chars = @proxy_class.new UNICODE_STRING.dup end def test_wraps_the_original_string assert_equal UNICODE_STRING, @chars.to_s assert_equal UNICODE_STRING, @chars.wrapped_string end def test_should_allow_method_calls_to_string @chars.wrapped_string.singleton_class.class_eval { def __method_for_multibyte_testing; "result"; end } assert_nothing_raised do @chars.__method_for_multibyte_testing end assert_raise NoMethodError do @chars.__unknown_method end end def test_forwarded_method_calls_should_return_new_chars_instance @chars.wrapped_string.singleton_class.class_eval { def __method_for_multibyte_testing; "result"; end } assert_kind_of @proxy_class, @chars.__method_for_multibyte_testing assert_not_equal @chars.object_id, @chars.__method_for_multibyte_testing.object_id end def test_forwarded_bang_method_calls_should_return_the_original_chars_instance_when_result_is_not_nil @chars.wrapped_string.singleton_class.class_eval { def __method_for_multibyte_testing!; "result"; end } assert_kind_of @proxy_class, @chars.__method_for_multibyte_testing! assert_equal @chars.object_id, @chars.__method_for_multibyte_testing!.object_id end def test_forwarded_bang_method_calls_should_return_nil_when_result_is_nil @chars.wrapped_string.singleton_class.class_eval { def __method_for_multibyte_testing_that_returns_nil!; end } assert_nil @chars.__method_for_multibyte_testing_that_returns_nil! end def test_methods_are_forwarded_to_wrapped_string_for_byte_strings assert_equal BYTE_STRING.length, BYTE_STRING.mb_chars.length end def test_forwarded_method_with_non_string_result_should_be_returned_vertabim str = "" str.singleton_class.class_eval { def __method_for_multibyte_testing_with_integer_result; 1; end } @chars.wrapped_string.singleton_class.class_eval { def __method_for_multibyte_testing_with_integer_result; 1; end } assert_equal str.__method_for_multibyte_testing_with_integer_result, @chars.__method_for_multibyte_testing_with_integer_result end def test_should_concatenate mb_a = "a".mb_chars mb_b = "b".mb_chars assert_equal "ab", mb_a + "b" assert_equal "ab", "a" + mb_b assert_equal "ab", mb_a + mb_b assert_equal "ab", mb_a << "b" assert_equal "ab", "a" << mb_b assert_equal "abb", mb_a << mb_b end def test_consumes_utf8_strings assert @proxy_class.consumes?(UNICODE_STRING) assert @proxy_class.consumes?(ASCII_STRING) assert !@proxy_class.consumes?(BYTE_STRING) end def test_concatenation_should_return_a_proxy_class_instance assert_equal ActiveSupport::Multibyte.proxy_class, ("a".mb_chars + "b").class assert_equal ActiveSupport::Multibyte.proxy_class, ("a".mb_chars << "b").class end def test_ascii_strings_are_treated_at_utf8_strings assert_equal ActiveSupport::Multibyte.proxy_class, ASCII_STRING.mb_chars.class end def test_concatenate_should_return_proxy_instance assert(("a".mb_chars + "b").kind_of?(@proxy_class)) assert(("a".mb_chars + "b".mb_chars).kind_of?(@proxy_class)) assert(("a".mb_chars << "b").kind_of?(@proxy_class)) assert(("a".mb_chars << "b".mb_chars).kind_of?(@proxy_class)) end def test_should_return_string_as_json assert_equal UNICODE_STRING, @chars.as_json end end class MultibyteCharsUTF8BehaviourTest < ActiveSupport::TestCase include MultibyteTestHelpers def setup @chars = UNICODE_STRING.dup.mb_chars # Ruby 1.9 only supports basic whitespace @whitespace = "\n\t " end def test_split_should_return_an_array_of_chars_instances @chars.split(//).each do |character| assert_kind_of ActiveSupport::Multibyte.proxy_class, character end end %w{capitalize downcase lstrip reverse rstrip swapcase upcase}.each do |method| class_eval(<<-EOTESTS, __FILE__, __LINE__ + 1) def test_#{method}_bang_should_return_self_when_modifying_wrapped_string chars = ' él piDió Un bUen café ' assert_equal chars.object_id, chars.send("#{method}!").object_id end def test_#{method}_bang_should_change_wrapped_string original = ' él piDió Un bUen café ' proxy = chars(original.dup) proxy.send("#{method}!") assert_not_equal original, proxy.to_s end EOTESTS end def test_tidy_bytes_bang_should_return_self assert_equal @chars.object_id, @chars.tidy_bytes!.object_id end def test_tidy_bytes_bang_should_change_wrapped_string original = " Un bUen café \x92" proxy = chars(original.dup) proxy.tidy_bytes! assert_not_equal original, proxy.to_s end def test_unicode_string_should_have_utf8_encoding assert_equal Encoding::UTF_8, UNICODE_STRING.encoding end def test_identity assert_equal @chars, @chars assert @chars.eql?(@chars) assert !@chars.eql?(UNICODE_STRING) end def test_string_methods_are_chainable assert chars("").insert(0, "").kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").rjust(1).kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").ljust(1).kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").center(1).kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").rstrip.kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").lstrip.kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").strip.kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").reverse.kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars(" ").slice(0).kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").limit(0).kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").upcase.kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").downcase.kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").capitalize.kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").normalize.kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").decompose.kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").compose.kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").tidy_bytes.kind_of?(ActiveSupport::Multibyte.proxy_class) assert chars("").swapcase.kind_of?(ActiveSupport::Multibyte.proxy_class) end def test_should_be_equal_to_the_wrapped_string assert_equal UNICODE_STRING, @chars assert_equal @chars, UNICODE_STRING end def test_should_not_be_equal_to_an_other_string assert_not_equal @chars, "other" assert_not_equal "other", @chars end def test_sortability words = %w(builder armor zebra).sort_by(&:mb_chars) assert_equal %w(armor builder zebra), words end def test_should_return_character_offset_for_regexp_matches assert_nil(@chars =~ /wrong/u) assert_equal 0, (@chars =~ /こ/u) assert_equal 0, (@chars =~ /こに/u) assert_equal 1, (@chars =~ /に/u) assert_equal 2, (@chars =~ /ち/u) assert_equal 3, (@chars =~ /わ/u) end def test_should_use_character_offsets_for_insert_offsets assert_equal "", "".mb_chars.insert(0, "") assert_equal "こわにちわ", @chars.insert(1, "わ") assert_equal "こわわわにちわ", @chars.insert(2, "わわ") assert_equal "わこわわわにちわ", @chars.insert(0, "わ") assert_equal "わこわわわにちわ", @chars.wrapped_string end def test_insert_should_be_destructive @chars.insert(1, "わ") assert_equal "こわにちわ", @chars end def test_insert_throws_index_error assert_raise(IndexError) { @chars.insert(-12, "わ") } assert_raise(IndexError) { @chars.insert(12, "わ") } end def test_should_know_if_one_includes_the_other assert_includes @chars, "" assert_includes @chars, "ち" assert_includes @chars, "わ" assert_not_includes @chars, "こちわ" assert_not_includes @chars, "a" end def test_include_raises_when_nil_is_passed assert_raises TypeError, NoMethodError, "Expected chars.include?(nil) to raise TypeError or NoMethodError" do @chars.include?(nil) end end def test_index_should_return_character_offset assert_nil @chars.index("u") assert_equal 0, @chars.index("こに") assert_equal 2, @chars.index("ち") assert_equal 2, @chars.index("ち", -2) assert_equal nil, @chars.index("ち", -1) assert_equal 3, @chars.index("わ") assert_equal 5, "ééxééx".mb_chars.index("x", 4) end def test_rindex_should_return_character_offset assert_nil @chars.rindex("u") assert_equal 1, @chars.rindex("に") assert_equal 2, @chars.rindex("ち", -2) assert_nil @chars.rindex("ち", -3) assert_equal 6, "Café périferôl".mb_chars.rindex("é") assert_equal 13, "Café périferôl".mb_chars.rindex(/\w/u) end def test_indexed_insert_should_take_character_offsets @chars[2] = "a" assert_equal "こにaわ", @chars @chars[2] = "ηη" assert_equal "こにηηわ", @chars @chars[3, 2] = "λλλ" assert_equal "こにηλλλ", @chars @chars[1, 0] = "λ" assert_equal "こλにηλλλ", @chars @chars[4..6] = "ηη" assert_equal "こλにηηη", @chars @chars[/ηη/] = "λλλ" assert_equal "こλにλλλη", @chars @chars[/(λλ)(.)/, 2] = "α" assert_equal "こλにλλαη", @chars @chars["α"] = "¢" assert_equal "こλにλλ¢η", @chars @chars["λλ"] = "ααα" assert_equal "こλにααα¢η", @chars end def test_indexed_insert_should_raise_on_index_overflow before = @chars.to_s assert_raise(IndexError) { @chars[10] = "a" } assert_raise(IndexError) { @chars[10, 4] = "a" } assert_raise(IndexError) { @chars[/ii/] = "a" } assert_raise(IndexError) { @chars[/()/, 10] = "a" } assert_equal before, @chars end def test_indexed_insert_should_raise_on_range_overflow before = @chars.to_s assert_raise(RangeError) { @chars[10..12] = "a" } assert_equal before, @chars end def test_rjust_should_raise_argument_errors_on_bad_arguments assert_raise(ArgumentError) { @chars.rjust(10, "") } assert_raise(ArgumentError) { @chars.rjust } end def test_rjust_should_count_characters_instead_of_bytes assert_equal UNICODE_STRING, @chars.rjust(-3) assert_equal UNICODE_STRING, @chars.rjust(0) assert_equal UNICODE_STRING, @chars.rjust(4) assert_equal " #{UNICODE_STRING}", @chars.rjust(5) assert_equal " #{UNICODE_STRING}", @chars.rjust(7) assert_equal "---#{UNICODE_STRING}", @chars.rjust(7, "-") assert_equal "ααα#{UNICODE_STRING}", @chars.rjust(7, "α") assert_equal "aba#{UNICODE_STRING}", @chars.rjust(7, "ab") assert_equal "αηα#{UNICODE_STRING}", @chars.rjust(7, "αη") assert_equal "αηαη#{UNICODE_STRING}", @chars.rjust(8, "αη") end def test_ljust_should_raise_argument_errors_on_bad_arguments assert_raise(ArgumentError) { @chars.ljust(10, "") } assert_raise(ArgumentError) { @chars.ljust } end def test_ljust_should_count_characters_instead_of_bytes assert_equal UNICODE_STRING, @chars.ljust(-3) assert_equal UNICODE_STRING, @chars.ljust(0) assert_equal UNICODE_STRING, @chars.ljust(4) assert_equal "#{UNICODE_STRING} ", @chars.ljust(5) assert_equal "#{UNICODE_STRING} ", @chars.ljust(7) assert_equal "#{UNICODE_STRING}---", @chars.ljust(7, "-") assert_equal "#{UNICODE_STRING}ααα", @chars.ljust(7, "α") assert_equal "#{UNICODE_STRING}aba", @chars.ljust(7, "ab") assert_equal "#{UNICODE_STRING}αηα", @chars.ljust(7, "αη") assert_equal "#{UNICODE_STRING}αηαη", @chars.ljust(8, "αη") end def test_center_should_raise_argument_errors_on_bad_arguments assert_raise(ArgumentError) { @chars.center(10, "") } assert_raise(ArgumentError) { @chars.center } end def test_center_should_count_characters_instead_of_bytes assert_equal UNICODE_STRING, @chars.center(-3) assert_equal UNICODE_STRING, @chars.center(0) assert_equal UNICODE_STRING, @chars.center(4) assert_equal "#{UNICODE_STRING} ", @chars.center(5) assert_equal " #{UNICODE_STRING} ", @chars.center(6) assert_equal " #{UNICODE_STRING} ", @chars.center(7) assert_equal "--#{UNICODE_STRING}--", @chars.center(8, "-") assert_equal "--#{UNICODE_STRING}---", @chars.center(9, "-") assert_equal "αα#{UNICODE_STRING}αα", @chars.center(8, "α") assert_equal "αα#{UNICODE_STRING}ααα", @chars.center(9, "α") assert_equal "a#{UNICODE_STRING}ab", @chars.center(7, "ab") assert_equal "ab#{UNICODE_STRING}ab", @chars.center(8, "ab") assert_equal "abab#{UNICODE_STRING}abab", @chars.center(12, "ab") assert_equal "α#{UNICODE_STRING}αη", @chars.center(7, "αη") assert_equal "αη#{UNICODE_STRING}αη", @chars.center(8, "αη") end def test_lstrip_strips_whitespace_from_the_left_of_the_string assert_equal UNICODE_STRING, UNICODE_STRING.mb_chars.lstrip assert_equal UNICODE_STRING, (@whitespace + UNICODE_STRING).mb_chars.lstrip assert_equal UNICODE_STRING + @whitespace, (@whitespace + UNICODE_STRING + @whitespace).mb_chars.lstrip end def test_rstrip_strips_whitespace_from_the_right_of_the_string assert_equal UNICODE_STRING, UNICODE_STRING.mb_chars.rstrip assert_equal UNICODE_STRING, (UNICODE_STRING + @whitespace).mb_chars.rstrip assert_equal @whitespace + UNICODE_STRING, (@whitespace + UNICODE_STRING + @whitespace).mb_chars.rstrip end def test_strip_strips_whitespace assert_equal UNICODE_STRING, UNICODE_STRING.mb_chars.strip assert_equal UNICODE_STRING, (@whitespace + UNICODE_STRING).mb_chars.strip assert_equal UNICODE_STRING, (UNICODE_STRING + @whitespace).mb_chars.strip assert_equal UNICODE_STRING, (@whitespace + UNICODE_STRING + @whitespace).mb_chars.strip end def test_stripping_whitespace_leaves_whitespace_within_the_string_intact string_with_whitespace = UNICODE_STRING + @whitespace + UNICODE_STRING assert_equal string_with_whitespace, string_with_whitespace.mb_chars.strip assert_equal string_with_whitespace, string_with_whitespace.mb_chars.lstrip assert_equal string_with_whitespace, string_with_whitespace.mb_chars.rstrip end def test_size_returns_characters_instead_of_bytes assert_equal 0, "".mb_chars.size assert_equal 4, @chars.size assert_equal 4, @chars.length assert_equal 5, ASCII_STRING.mb_chars.size end def test_reverse_reverses_characters assert_equal "", "".mb_chars.reverse assert_equal "わちにこ", @chars.reverse end def test_reverse_should_work_with_normalized_strings str = "bös" reversed_str = "söb" assert_equal chars(reversed_str).normalize(:kc), chars(str).normalize(:kc).reverse assert_equal chars(reversed_str).normalize(:c), chars(str).normalize(:c).reverse assert_equal chars(reversed_str).normalize(:d), chars(str).normalize(:d).reverse assert_equal chars(reversed_str).normalize(:kd), chars(str).normalize(:kd).reverse assert_equal chars(reversed_str).decompose, chars(str).decompose.reverse assert_equal chars(reversed_str).compose, chars(str).compose.reverse end def test_slice_should_take_character_offsets assert_equal nil, "".mb_chars.slice(0) assert_equal "こ", @chars.slice(0) assert_equal "わ", @chars.slice(3) assert_equal nil, "".mb_chars.slice(-1..1) assert_equal nil, "".mb_chars.slice(-1, 1) assert_equal "", "".mb_chars.slice(0..10) assert_equal "にちわ", @chars.slice(1..3) assert_equal "にちわ", @chars.slice(1, 3) assert_equal "こ", @chars.slice(0, 1) assert_equal "ちわ", @chars.slice(2..10) assert_equal "", @chars.slice(4..10) assert_equal "に", @chars.slice(/に/u) assert_equal "にち", @chars.slice(/に./u) assert_equal nil, @chars.slice(/unknown/u) assert_equal "にち", @chars.slice(/(にち)/u, 1) assert_equal nil, @chars.slice(/(にち)/u, 2) assert_equal nil, @chars.slice(7..6) end def test_slice_bang_returns_sliced_out_substring assert_equal "にち", @chars.slice!(1..2) end def test_slice_bang_returns_nil_on_out_of_bound_arguments assert_equal nil, @chars.mb_chars.slice!(9..10) end def test_slice_bang_removes_the_slice_from_the_receiver chars = "úüù".mb_chars chars.slice!(0, 2) assert_equal "ù", chars end def test_slice_bang_returns_nil_and_does_not_modify_receiver_if_out_of_bounds string = "úüù" chars = string.mb_chars assert_nil chars.slice!(4, 5) assert_equal "úüù", chars assert_equal "úüù", string end def test_slice_should_throw_exceptions_on_invalid_arguments assert_raise(TypeError) { @chars.slice(2..3, 1) } assert_raise(TypeError) { @chars.slice(1, 2..3) } assert_raise(ArgumentError) { @chars.slice(1, 1, 1) } end def test_ord_should_return_unicode_value_for_first_character assert_equal 12371, @chars.ord end def test_upcase_should_upcase_ascii_characters assert_equal "", "".mb_chars.upcase assert_equal "ABC", "aBc".mb_chars.upcase end def test_downcase_should_downcase_ascii_characters assert_equal "", "".mb_chars.downcase assert_equal "abc", "aBc".mb_chars.downcase end def test_swapcase_should_swap_ascii_characters assert_equal "", "".mb_chars.swapcase assert_equal "AbC", "aBc".mb_chars.swapcase end def test_capitalize_should_work_on_ascii_characters assert_equal "", "".mb_chars.capitalize assert_equal "Abc", "abc".mb_chars.capitalize end def test_titleize_should_work_on_ascii_characters assert_equal "", "".mb_chars.titleize assert_equal "Abc Abc", "abc abc".mb_chars.titleize end def test_respond_to_knows_which_methods_the_proxy_responds_to assert "".mb_chars.respond_to?(:slice) # Defined on Chars assert "".mb_chars.respond_to?(:capitalize!) # Defined on Chars assert "".mb_chars.respond_to?(:gsub) # Defined on String assert !"".mb_chars.respond_to?(:undefined_method) # Not defined end def test_method_works_for_proxyed_methods assert_equal "ll", "hello".mb_chars.method(:slice).call(2..3) # Defined on Chars chars = "hello".mb_chars assert_equal "Hello", chars.method(:capitalize!).call # Defined on Chars assert_equal "Hello", chars assert_equal "jello", "hello".mb_chars.method(:gsub).call(/h/, "j") # Defined on String assert_raise(NameError) { "".mb_chars.method(:undefined_method) } # Not defined end def test_acts_like_string assert "Bambi".mb_chars.acts_like_string? end end # The default Multibyte Chars proxy has more features than the normal string implementation. Tests # for the implementation of these features should run on all Ruby versions and shouldn't be tested # through the proxy methods. class MultibyteCharsExtrasTest < ActiveSupport::TestCase include MultibyteTestHelpers def test_upcase_should_be_unicode_aware assert_equal "АБВГД\0F", chars("аБвгд\0f").upcase assert_equal "こにちわ", chars("こにちわ").upcase end def test_downcase_should_be_unicode_aware assert_equal "абвгд\0f", chars("аБвгд\0F").downcase assert_equal "こにちわ", chars("こにちわ").downcase end def test_swapcase_should_be_unicode_aware assert_equal "аaéÜ\0f", chars("АAÉü\0F").swapcase assert_equal "こにちわ", chars("こにちわ").swapcase end def test_capitalize_should_be_unicode_aware { "аБвг аБвг" => "Абвг абвг", "аБвг АБВГ" => "Абвг абвг", "АБВГ АБВГ" => "Абвг абвг", "" => "" }.each do |f, t| assert_equal t, chars(f).capitalize end end def test_titleize_should_be_unicode_aware assert_equal "Él Que Se Enteró", chars("ÉL QUE SE ENTERÓ").titleize assert_equal "Абвг Абвг", chars("аБвг аБвг").titleize end def test_titleize_should_not_affect_characters_that_do_not_case_fold assert_equal "日本語", chars("日本語").titleize end def test_limit_should_not_break_on_blank_strings example = chars("") assert_equal example, example.limit(0) assert_equal example, example.limit(1) end def test_limit_should_work_on_a_multibyte_string example = chars(UNICODE_STRING) bytesize = UNICODE_STRING.bytesize assert_equal UNICODE_STRING, example.limit(bytesize) assert_equal "", example.limit(0) assert_equal "", example.limit(1) assert_equal "こ", example.limit(3) assert_equal "こに", example.limit(6) assert_equal "こに", example.limit(8) assert_equal "こにち", example.limit(9) assert_equal "こにちわ", example.limit(50) end def test_limit_should_work_on_an_ascii_string ascii = chars(ASCII_STRING) assert_equal ASCII_STRING, ascii.limit(ASCII_STRING.length) assert_equal "", ascii.limit(0) assert_equal "o", ascii.limit(1) assert_equal "oh", ascii.limit(2) assert_equal "ohay", ascii.limit(4) assert_equal "ohayo", ascii.limit(50) end def test_limit_should_keep_under_the_specified_byte_limit example = chars(UNICODE_STRING) (1..UNICODE_STRING.length).each do |limit| assert example.limit(limit).to_s.length <= limit end end def test_composition_exclusion_is_set_up_properly # Normalization of DEVANAGARI LETTER QA breaks when composition exclusion isn't used correctly qa = [0x915, 0x93c].pack("U*") assert_equal qa, chars(qa).normalize(:c) end # Test for the Public Review Issue #29, bad explanation 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_codepoints c, chars(c).normalize(:c) end end def test_normalization_shouldnt_strip_null_bytes null_byte_str = "Test\0test" assert_equal null_byte_str, chars(null_byte_str).normalize(:kc) assert_equal null_byte_str, chars(null_byte_str).normalize(:c) assert_equal null_byte_str, chars(null_byte_str).normalize(:d) assert_equal null_byte_str, chars(null_byte_str).normalize(:kd) assert_equal null_byte_str, chars(null_byte_str).decompose assert_equal null_byte_str, chars(null_byte_str).compose end def test_simple_normalization comp_str = [ 44, # LATIN CAPITAL LETTER D 307, # COMBINING DOT ABOVE 328, # COMBINING OGONEK 323 # COMBINING DOT BELOW ].pack("U*") assert_equal_codepoints "", chars("").normalize assert_equal_codepoints [44, 105, 106, 328, 323].pack("U*"), chars(comp_str).normalize(:kc).to_s assert_equal_codepoints [44, 307, 328, 323].pack("U*"), chars(comp_str).normalize(:c).to_s assert_equal_codepoints [44, 307, 110, 780, 78, 769].pack("U*"), chars(comp_str).normalize(:d).to_s assert_equal_codepoints [44, 105, 106, 110, 780, 78, 769].pack("U*"), chars(comp_str).normalize(:kd).to_s end def test_should_compute_grapheme_length [ ["", 0], ["abc", 3], ["こにちわ", 4], [[0x0924, 0x094D, 0x0930].pack("U*"), 2], # GB3 [%w(cr lf), 1], # GB4 [%w(cr n), 2], [%w(lf n), 2], [%w(control n), 2], [%w(cr extend), 2], [%w(lf extend), 2], [%w(control extend), 2], # GB 5 [%w(n cr), 2], [%w(n lf), 2], [%w(n control), 2], [%w(extend cr), 2], [%w(extend lf), 2], [%w(extend control), 2], # GB 6 [%w(l l), 1], [%w(l v), 1], [%w(l lv), 1], [%w(l lvt), 1], # GB7 [%w(lv v), 1], [%w(lv t), 1], [%w(v v), 1], [%w(v t), 1], # GB8 [%w(lvt t), 1], [%w(t t), 1], # GB8a [%w(r r), 1], # GB9 [%w(n extend), 1], # GB9a [%w(n spacingmark), 1], # GB10 [%w(n n), 2], # Other [%w(n cr lf n), 3], [%w(n l v t), 2], [%w(cr extend n), 3], ].each do |input, expected_length| if input.kind_of?(Array) str = string_from_classes(input) else str = input end assert_equal expected_length, chars(str).grapheme_length, input.inspect end end def test_tidy_bytes_should_tidy_bytes single_byte_cases = { "\x21" => "!", # Valid ASCII byte, low "\x41" => "A", # Valid ASCII byte, mid "\x7E" => "~", # Valid ASCII byte, high "\x80" => "€", # Continuation byte, low (cp125) "\x94" => "”", # Continuation byte, mid (cp125) "\x9F" => "Ÿ", # Continuation byte, high (cp125) "\xC0" => "À", # Overlong encoding, start of 2-byte sequence, but codepoint < 128 "\xC1" => "Á", # Overlong encoding, start of 2-byte sequence, but codepoint < 128 "\xC2" => "Â", # Start of 2-byte sequence, low "\xC8" => "È", # Start of 2-byte sequence, mid "\xDF" => "ß", # Start of 2-byte sequence, high "\xE0" => "à", # Start of 3-byte sequence, low "\xE8" => "è", # Start of 3-byte sequence, mid "\xEF" => "ï", # Start of 3-byte sequence, high "\xF0" => "ð", # Start of 4-byte sequence "\xF1" => "ñ", # Unused byte "\xFF" => "ÿ", # Restricted byte "\x00" => "\x00" # null char } single_byte_cases.each do |bad, good| assert_equal good, chars(bad).tidy_bytes.to_s assert_equal "#{good}#{good}", chars("#{bad}#{bad}").tidy_bytes assert_equal "#{good}#{good}#{good}", chars("#{bad}#{bad}#{bad}").tidy_bytes assert_equal "#{good}a", chars("#{bad}a").tidy_bytes assert_equal "#{good}á", chars("#{bad}á").tidy_bytes assert_equal "a#{good}a", chars("a#{bad}a").tidy_bytes assert_equal "á#{good}á", chars("á#{bad}á").tidy_bytes assert_equal "a#{good}", chars("a#{bad}").tidy_bytes assert_equal "á#{good}", chars("á#{bad}").tidy_bytes end byte_string = "\270\236\010\210\245" tidy_string = [0xb8, 0x17e, 0x8, 0x2c6, 0xa5].pack("U*") assert_equal_codepoints tidy_string, chars(byte_string).tidy_bytes assert_nothing_raised { chars(byte_string).tidy_bytes.to_s.unpack("U*") } # UTF-8 leading byte followed by too few continuation bytes assert_equal_codepoints "\xc3\xb0\xc2\xa5\xc2\xa4\x21", chars("\xf0\xa5\xa4\x21").tidy_bytes end def test_tidy_bytes_should_forcibly_tidy_bytes_if_specified byte_string = "\xF0\xA5\xA4\xA4" # valid as both CP-1252 and UTF-8, but with different interpretations. assert_not_equal "𥤤", chars(byte_string).tidy_bytes # Forcible conversion to UTF-8 assert_equal "𥤤", chars(byte_string).tidy_bytes(true) end def test_class_is_not_forwarded assert_equal BYTE_STRING.dup.mb_chars.class, ActiveSupport::Multibyte::Chars end private def string_from_classes(classes) # 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, spacingmark: 0x0903, r: 0x1F1E6, control: 0x0001 } classes.collect do |k| character_from_class[k.intern] end.pack("U*") end end class MultibyteInternalsTest < ActiveSupport::TestCase include MultibyteTestHelpers test "Chars translates a character offset to a byte offset" do example = chars("Puisque c'était son erreur, il m'a aidé") [ [0, 0], [3, 3], [12, 11], [14, 13], [41, 39] ].each do |byte_offset, character_offset| assert_equal character_offset, example.send(:translate_offset, byte_offset), "Expected byte offset #{byte_offset} to translate to #{character_offset}" end end end