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76 lines
2.5 KiB
Ruby
76 lines
2.5 KiB
Ruby
# encoding: utf-8
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require 'abstract_unit'
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require 'fileutils'
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require 'open-uri'
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require 'tmpdir'
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class MultibyteGraphemeBreakConformanceTest < ActiveSupport::TestCase
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class Downloader
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def self.download(from, to)
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unless File.exist?(to)
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$stderr.puts "Downloading #{from} to #{to}"
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unless File.exist?(File.dirname(to))
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system "mkdir -p #{File.dirname(to)}"
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end
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open(from) do |source|
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File.open(to, 'w') do |target|
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source.each_line do |l|
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target.write l
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end
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end
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end
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end
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end
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end
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TEST_DATA_URL = "http://www.unicode.org/Public/#{ActiveSupport::Multibyte::Unicode::UNICODE_VERSION}/ucd/auxiliary"
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TEST_DATA_FILE = '/GraphemeBreakTest.txt'
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CACHE_DIR = File.join(Dir.tmpdir, 'cache')
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def setup
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FileUtils.mkdir_p(CACHE_DIR)
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Downloader.download(TEST_DATA_URL + TEST_DATA_FILE, CACHE_DIR + TEST_DATA_FILE)
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end
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def test_breaks
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each_line_of_break_tests do |*cols|
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*clusters, comment = *cols
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packed = ActiveSupport::Multibyte::Unicode.pack_graphemes(clusters)
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assert_equal clusters, ActiveSupport::Multibyte::Unicode.unpack_graphemes(packed), comment
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end
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end
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protected
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def each_line_of_break_tests(&block)
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lines = 0
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max_test_lines = 0 # Don't limit below 21, because that's the header of the testfile
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File.open(File.join(CACHE_DIR, TEST_DATA_FILE), 'r') do | f |
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until f.eof? || (max_test_lines > 21 and lines > max_test_lines)
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lines += 1
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line = f.gets.chomp!
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next if (line.empty? || line =~ /^\#/)
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cols, comment = line.split("#")
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# Cluster breaks are represented by ÷
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clusters = cols.split("÷").map{|e| e.strip}.reject{|e| e.empty? }
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clusters = clusters.map do |cluster|
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# Codepoints within each cluster are separated by ×
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codepoints = cluster.split("×").map{|e| e.strip}.reject{|e| e.empty? }
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# codepoints are in hex in the test suite, pack wants them as integers
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codepoints.map{|codepoint| codepoint.to_i(16)}
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end
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# The tests contain a solitary U+D800 <Non Private Use High
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# Surrogate, First> character, which Ruby does not allow to stand
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# alone in a UTF-8 string. So we'll just skip it.
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next if clusters.flatten.include?(0xd800)
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clusters << comment.strip
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yield(*clusters)
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end
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end
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end
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end
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