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# encoding: utf-8
require 'abstract_unit'
require 'multibyte_test_helpers'
class MultibyteUtilsTest < ActiveSupport::TestCase
include MultibyteTestHelpers
test "valid_character returns an expression for the current encoding" do
with_encoding('None') do
assert_nil ActiveSupport::Multibyte.valid_character
end
with_encoding('UTF8') do
assert_equal ActiveSupport::Multibyte::VALID_CHARACTER['UTF-8'], ActiveSupport::Multibyte.valid_character
end
with_encoding('SJIS') do
assert_equal ActiveSupport::Multibyte::VALID_CHARACTER['Shift_JIS'], ActiveSupport::Multibyte.valid_character
end
end
test "verify verifies ASCII strings are properly encoded" do
with_encoding('None') do
examples.each do |example|
assert ActiveSupport::Multibyte.verify(example)
end
end
end
test "verify verifies UTF-8 strings are properly encoded" do
with_encoding('UTF8') do
assert ActiveSupport::Multibyte.verify(example('valid UTF-8'))
assert !ActiveSupport::Multibyte.verify(example('invalid UTF-8'))
end
end
test "verify verifies Shift-JIS strings are properly encoded" do
with_encoding('SJIS') do
assert ActiveSupport::Multibyte.verify(example('valid Shift-JIS'))
assert !ActiveSupport::Multibyte.verify(example('invalid Shift-JIS'))
end
end
test "verify! raises an exception when it finds an invalid character" do
with_encoding('UTF8') do
assert_raises(ActiveSupport::Multibyte::EncodingError) do
ActiveSupport::Multibyte.verify!(example('invalid UTF-8'))
end
end
end
test "verify! doesn't raise an exception when the encoding is valid" do
with_encoding('UTF8') do
assert_nothing_raised do
ActiveSupport::Multibyte.verify!(example('valid UTF-8'))
end
end
end
test "clean is a no-op" do
with_encoding('UTF8') do
assert_equal example('invalid Shift-JIS'), ActiveSupport::Multibyte.clean(example('invalid Shift-JIS'))
end
end
private
STRINGS = {
'valid ASCII' => [65, 83, 67, 73, 73].pack('C*'),
'invalid ASCII' => [128].pack('C*'),
'valid UTF-8' => [227, 129, 147, 227, 129, 171, 227, 129, 161, 227, 130, 143].pack('C*'),
'invalid UTF-8' => [184, 158, 8, 136, 165].pack('C*'),
'valid Shift-JIS' => [131, 122, 129, 91, 131, 128].pack('C*'),
'invalid Shift-JIS' => [184, 158, 8, 0, 255, 136, 165].pack('C*')
}
if Kernel.const_defined?(:Encoding)
def example(key)
STRINGS[key].force_encoding(Encoding.default_external)
end
def examples
STRINGS.values.map { |s| s.force_encoding(Encoding.default_external) }
end
else
def example(key)
STRINGS[key]
end
def examples
STRINGS.values
end
end
KCODE_TO_ENCODING = Hash.new(Encoding::BINARY).
update('UTF8' => Encoding::UTF_8, 'SJIS' => Encoding::Shift_JIS)
def with_encoding(enc)
before = Encoding.default_external
silence_warnings { Encoding.default_external = KCODE_TO_ENCODING[enc] }
yield
silence_warnings { Encoding.default_external = before }
end
end
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