sup

test/unit/util/test_string.rb (1633B) - raw

 # encoding: utf-8
 
 require "test_helper"
 
 require "sup/util"
 
 describe "Sup's String extension" do
   describe "#display_length" do
     let :data do
       [
         ['some words', 10,],
         ['中文', 4,],
         ['ä', 1,],
         ['😱', 2],
         #['🏳️‍🌈', 2],  # Emoji ZWJ sequence not yet supported (see PR #563)
       ]
     end
 
     it "calculates display length of a string" do
       data.each do |(str, length)|
         assert_equal length, str.dup.display_length
       end
     end
   end
 
   describe "#slice_by_display_length(len)" do
     let :data do
       [
         ['some words', 6, 'some w'],
         ['中文', 2, '中'],
         ['älpha', 3, 'älp'],
         ['😱😱', 2, '😱'],
         #['🏳️‍🌈', 2, '🏳️‍🌈'],  # Emoji ZWJ sequence not yet supported (see PR #563)
       ]
     end
 
     it "slices string by display length" do
       data.each do |(str, length, sliced)|
         assert_equal sliced, str.dup.slice_by_display_length(length)
       end
     end
   end
 
   describe "#wrap" do
     let :data do
       [
         ['some words', 6, ['some', 'words']],
         ['some words', 80, ['some words']],
         ['中文', 2, ['中', '文']],
         ['中文', 5, ['中文']],
         ['älpha', 3, ['älp', 'ha']],
         ['😱😱', 2, ['😱', '😱']],
         #['🏳️‍🌈🏳️‍🌈', 2, ['🏳️‍🌈', '🏳️‍🌈']],  # Emoji ZWJ sequence not yet supported (see PR #563)
       ]
     end
 
     it "wraps string by display length" do
       data.each do |(str, length, wrapped)|
         assert_equal wrapped, str.dup.wrap(length)
       end
     end
   end
 end