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# encoding: utf-8
require 'abstract_unit'
require 'multibyte_test_helpers'
class String
def __method_for_multibyte_testing_with_integer_result; 1; end
def __method_for_multibyte_testing; 'result'; end
def __method_for_multibyte_testing!; 'result'; end
end
class MultibyteCharsTest < Test::Unit::TestCase
include MultibyteTestHelpers
def setup
@proxy_class = ActiveSupport::Multibyte::Chars
@chars = @proxy_class.new UNICODE_STRING
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
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
assert @chars.__method_for_multibyte_testing.kind_of?(@proxy_class)
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
assert @chars.__method_for_multibyte_testing!.kind_of?(@proxy_class)
assert_equal @chars.object_id, @chars.__method_for_multibyte_testing!.object_id
end
def test_methods_are_forwarded_to_wrapped_string_for_byte_strings
assert_equal BYTE_STRING.class, BYTE_STRING.mb_chars.class
end
def test_forwarded_method_with_non_string_result_should_be_returned_vertabim
assert_equal ''.__method_for_multibyte_testing_with_integer_result, @chars.__method_for_multibyte_testing_with_integer_result
end
def test_should_concatenate
assert_equal 'ab', 'a'.mb_chars + 'b'
assert_equal 'ab', 'a' + 'b'.mb_chars
assert_equal 'ab', 'a'.mb_chars + 'b'.mb_chars
assert_equal 'ab', 'a'.mb_chars << 'b'
assert_equal 'ab', 'a' << 'b'.mb_chars
assert_equal 'ab', 'a'.mb_chars << 'b'.mb_chars
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_unpack_utf8_strings
assert_equal 4, @proxy_class.u_unpack(UNICODE_STRING).length
assert_equal 5, @proxy_class.u_unpack(ASCII_STRING).length
end
def test_unpack_raises_encoding_error_on_broken_strings
assert_raise(ActiveSupport::Multibyte::EncodingError) do
@proxy_class.u_unpack(BYTE_STRING)
end
end
if RUBY_VERSION < '1.9'
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
end
end
class MultibyteCharsUTF8BehaviourTest < Test::Unit::TestCase
include MultibyteTestHelpers
def setup
@chars = UNICODE_STRING.dup.mb_chars
if RUBY_VERSION < '1.9'
# Multibyte support all kinds of whitespace (ie. NEWLINE, SPACE, EM SPACE)
@whitespace = "\n\t#{[32, 8195].pack('U*')}"
else
# Ruby 1.9 only supports basic whitespace
@whitespace = "\n\t ".force_encoding(Encoding::UTF_8)
end
@byte_order_mark = [65279].pack('U')
end
if RUBY_VERSION < '1.9'
def test_split_should_return_an_array_of_chars_instances
@chars.split(//).each do |character|
assert character.kind_of?(ActiveSupport::Multibyte.proxy_class)
end
end
def test_indexed_insert_accepts_fixnums
@chars[2] = 32
assert_equal 'こに わ', @chars
end
def test_overridden_bang_methods_return_self
[:rstrip!, :lstrip!, :strip!, :reverse!, :upcase!, :downcase!, :capitalize!].each do |method|
assert_equal @chars.object_id, @chars.send(method).object_id
end
end
def test_overridden_bang_methods_change_wrapped_string
[:rstrip!, :lstrip!, :strip!, :reverse!, :upcase!, :downcase!].each do |method|
original = ' Café '
proxy = chars(original.dup)
proxy.send(method)
assert_not_equal original, proxy.to_s
end
proxy = chars('òu')
proxy.capitalize!
assert_equal 'Òu', proxy.to_s
end
end
if RUBY_VERSION >= '1.9'
def test_unicode_string_should_have_utf8_encoding
assert_equal Encoding::UTF_8, UNICODE_STRING.encoding
end
end
def test_identity
assert_equal @chars, @chars
assert @chars.eql?(@chars)
if RUBY_VERSION <= '1.9'
assert !@chars.eql?(UNICODE_STRING)
else
assert @chars.eql?(UNICODE_STRING)
end
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)
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 { |s| s.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 =~ //u)
assert_equal 0, (@chars =~ /こに/u)
assert_equal 1, (@chars =~ //u)
assert_equal 2, (@chars =~ //u)
assert_equal 3, (@chars =~ //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, '')
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, '')
assert_equal 'わこわわわにちわ', @chars.wrapped_string if RUBY_VERSION < '1.9'
end
def test_insert_should_be_destructive
@chars.insert(1, '')
assert_equal 'こわにちわ', @chars
end
def test_insert_throws_index_error
assert_raise(IndexError) { @chars.insert(-12, '')}
assert_raise(IndexError) { @chars.insert(12, '') }
end
def test_should_know_if_one_includes_the_other
assert @chars.include?('')
assert @chars.include?('')
assert @chars.include?('')
assert !@chars.include?('こちわ')
assert !@chars.include?('a')
end
def test_include_raises_when_nil_is_passed
@chars.include?(nil)
flunk "Expected chars.include?(nil) to raise TypeError or NoMethodError"
rescue Exception => e
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('')
assert_equal 2, @chars.index('', -2)
assert_equal nil, @chars.index('', -1)
assert_equal 3, @chars.index('')
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('')
assert_equal 2, @chars.rindex('', -2)
assert_nil @chars.rindex('', -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_charactes_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 '', @chars.slice(0)
assert_equal '', @chars.slice(3)
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 '', @chars.slice(0, 1)
assert_equal 'ちわ', @chars.slice(2..10)
assert_equal '', @chars.slice(4..10)
assert_equal '', @chars.slice(//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_removes_the_slice_from_the_receiver
@chars.slice!(1..2)
assert_equal 'こわ', @chars
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_capitalize_should_work_on_ascii_characters
assert_equal '', ''.mb_chars.capitalize
assert_equal 'Abc', 'abc'.mb_chars.capitalize
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_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 < Test::Unit::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_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_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.respond_to?(:bytesize) ? UNICODE_STRING.bytesize : UNICODE_STRING.size
assert_equal UNICODE_STRING, example.limit(bytesize)
assert_equal '', example.limit(0)
assert_equal '', example.limit(1)
assert_equal '', 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],
[%w(cr lf), 1],
[%w(l l), 1],
[%w(l v), 1],
[%w(l lv), 1],
[%w(l lvt), 1],
[%w(lv v), 1],
[%w(lv t), 1],
[%w(v v), 1],
[%w(v t), 1],
[%w(lvt t), 1],
[%w(t t), 1],
[%w(n extend), 1],
[%w(n n), 2],
[%w(n cr lf n), 3],
[%w(n l v t), 2]
].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).g_length
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
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
}
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
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