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# frozen_string_literal: true
require "abstract_unit"
require "active_support/inflector/transliterate"
class TransliterateTest < ActiveSupport::TestCase
def test_transliterate_should_not_change_ascii_chars
(0..127).each do |byte|
char = [byte].pack("U")
assert_equal char, ActiveSupport::Inflector.transliterate(char)
end
end
def test_transliterate_should_approximate_ascii
# create string with range of Unicode's western characters with
# diacritics, excluding the division and multiplication signs which for
# some reason or other are floating in the middle of all the letters.
string = (0xC0..0x17E).to_a.reject { |c| [0xD7, 0xF7].include?(c) }.pack("U*")
string.each_char do |char|
assert_match %r{^[a-zA-Z']*$}, ActiveSupport::Inflector.transliterate(char)
end
end
def test_transliterate_should_work_with_custom_i18n_rules_and_uncomposed_utf8
char = [117, 776].pack("U*") # "ü" as ASCII "u" plus COMBINING DIAERESIS
I18n.backend.store_translations(:de, i18n: { transliterate: { rule: { "ü" => "ue" } } })
default_locale, I18n.locale = I18n.locale, :de
assert_equal "ue", ActiveSupport::Inflector.transliterate(char)
ensure
I18n.locale = default_locale
end
def test_transliterate_respects_the_locale_argument
char = [117, 776].pack("U*") # "ü" as ASCII "u" plus COMBINING DIAERESIS
I18n.backend.store_translations(:de, i18n: { transliterate: { rule: { "ü" => "ue" } } })
assert_equal "ue", ActiveSupport::Inflector.transliterate(char, locale: :de)
end
def test_transliterate_should_allow_a_custom_replacement_char
assert_equal "a*b", ActiveSupport::Inflector.transliterate("a索b", "*")
end
def test_transliterate_handles_empty_string
assert_equal "", ActiveSupport::Inflector.transliterate("")
end
def test_transliterate_handles_nil
exception = assert_raises ArgumentError do
ActiveSupport::Inflector.transliterate(nil)
end
assert_equal "Can only transliterate strings. Received NilClass", exception.message
end
def test_transliterate_handles_unknown_object
exception = assert_raises ArgumentError do
ActiveSupport::Inflector.transliterate(Object.new)
end
assert_equal "Can only transliterate strings. Received Object", exception.message
end
def test_transliterate_handles_strings_with_valid_utf8_encodings
string = String.new("A", encoding: Encoding::UTF_8)
assert_equal "A", ActiveSupport::Inflector.transliterate(string)
end
def test_transliterate_handles_strings_with_valid_us_ascii_encodings
string = String.new("A", encoding: Encoding::US_ASCII)
transcoded = ActiveSupport::Inflector.transliterate(string)
assert_equal "A", transcoded
assert_equal Encoding::US_ASCII, transcoded.encoding
end
def test_transliterate_handles_strings_with_valid_gb18030_encodings
string = String.new("A", encoding: Encoding::GB18030)
transcoded = ActiveSupport::Inflector.transliterate(string)
assert_equal "A", transcoded
assert_equal Encoding::GB18030, transcoded.encoding
end
def test_transliterate_handles_strings_with_incompatible_encodings
incompatible_encodings = Encoding.list - [
Encoding::UTF_8,
Encoding::US_ASCII,
Encoding::GB18030
]
incompatible_encodings.each do |encoding|
string = String.new("", encoding: encoding)
exception = assert_raises ArgumentError do
ActiveSupport::Inflector.transliterate(string)
end
assert_equal "Can not transliterate strings with #{encoding} encoding", exception.message
end
end
def test_transliterate_handles_strings_with_invalid_utf8_bytes
string = String.new("\255", encoding: Encoding::UTF_8)
assert_equal "?", ActiveSupport::Inflector.transliterate(string)
end
def test_transliterate_handles_strings_with_invalid_us_ascii_bytes
string = String.new("\255", encoding: Encoding::US_ASCII)
assert_equal "?", ActiveSupport::Inflector.transliterate(string)
end
def test_transliterate_handles_strings_with_invalid_gb18030_bytes
string = String.new("\255", encoding: Encoding::GB18030)
assert_equal "?", ActiveSupport::Inflector.transliterate(string)
end
end
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