1
0
Fork 0
mirror of https://github.com/rails/rails.git synced 2022-11-09 12:12:34 -05:00
rails--rails/activesupport/test/multibyte_chars_test.rb
Santiago Pastorino e1d4e78b15 Removes unused vars
Signed-off-by: José Valim <jose.valim@gmail.com>
2010-07-24 01:19:44 +02:00

702 lines
26 KiB
Ruby
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

# 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_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
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_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
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_unpack_utf8_strings
assert_equal 4, ActiveSupport::Multibyte::Unicode.u_unpack(UNICODE_STRING).length
assert_equal 5, ActiveSupport::Multibyte::Unicode.u_unpack(ASCII_STRING).length
end
def test_unpack_raises_encoding_error_on_broken_strings
assert_raise(ActiveSupport::Multibyte::EncodingError) do
ActiveSupport::Multibyte::Unicode.u_unpack(BYTE_STRING)
end
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
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 "
end
@byte_order_mark = [65279].pack('U')
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
def test_indexed_insert_accepts_fixnums
@chars[2] = 32
assert_equal 'こに わ', @chars
end
%w{capitalize downcase lstrip reverse rstrip strip upcase}.each do |method|
class_eval(<<-EOTESTS)
def test_#{method}_bang_should_return_self
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
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)
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)
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, '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 @chars.include?('')
assert @chars.include?('ち')
assert @chars.include?('わ')
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
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(//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 = 'úüù'.mb_chars
chars.slice!(0,2)
assert_equal 'úü', 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_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_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_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.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 '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],
[%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