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Diffstat (limited to 'test/irb/test_color_printer.rb')
-rw-r--r-- | test/irb/test_color_printer.rb | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/test/irb/test_color_printer.rb b/test/irb/test_color_printer.rb new file mode 100644 index 0000000000..b42048c1da --- /dev/null +++ b/test/irb/test_color_printer.rb @@ -0,0 +1,71 @@ +# frozen_string_literal: false +require 'test/unit' +require 'irb/color_printer' +require 'rubygems' +require 'stringio' + +module TestIRB + class TestColorPrinter < Test::Unit::TestCase + CLEAR = "\e[0m" + BOLD = "\e[1m" + UNDERLINE = "\e[4m" + REVERSE = "\e[7m" + RED = "\e[31m" + GREEN = "\e[32m" + YELLOW = "\e[33m" + BLUE = "\e[34m" + MAGENTA = "\e[35m" + CYAN = "\e[36m" + + def setup + @get_screen_size = Reline.method(:get_screen_size) + Reline.instance_eval { undef :get_screen_size } + def Reline.get_screen_size + [36, 80] + end + end + + def teardown + Reline.instance_eval { undef :get_screen_size } + Reline.define_singleton_method(:get_screen_size, @get_screen_size) + end + + IRBTestColorPrinter = Struct.new(:a) + + def test_color_printer + unless ripper_lexer_scan_supported? + skip 'Ripper::Lexer#scan is supported in Ruby 2.7+' + end + { + 1 => "#{BLUE}#{BOLD}1#{CLEAR}\n", + IRBTestColorPrinter.new('test') => "#{GREEN}#<struct TestIRB::TestColorPrinter::IRBTestColorPrinter#{CLEAR} a#{GREEN}=#{CLEAR}#{RED}#{BOLD}\"#{CLEAR}#{RED}test#{CLEAR}#{RED}#{BOLD}\"#{CLEAR}#{GREEN}>#{CLEAR}\n", + Ripper::Lexer.new('1').scan => "[#{GREEN}#<Ripper::Lexer::Elem:#{CLEAR} on_int@1:0 END token: #{RED}#{BOLD}\"#{CLEAR}#{RED}1#{CLEAR}#{RED}#{BOLD}\"#{CLEAR}#{GREEN}>#{CLEAR}]\n", + Class.new{define_method(:pretty_print){|q| q.text("[__FILE__, __LINE__, __ENCODING__]")}}.new => "[#{CYAN}#{BOLD}__FILE__#{CLEAR}, #{CYAN}#{BOLD}__LINE__#{CLEAR}, #{CYAN}#{BOLD}__ENCODING__#{CLEAR}]\n", + }.each do |object, result| + actual = with_term { IRB::ColorPrinter.pp(object, '') } + assert_equal(result, actual, "Case: IRB::ColorPrinter.pp(#{object.inspect}, '')") + end + end + + private + + def ripper_lexer_scan_supported? + Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('2.7.0') + end + + def with_term + stdout = $stdout + io = StringIO.new + def io.tty?; true; end + $stdout = io + + env = ENV.to_h.dup + ENV['TERM'] = 'xterm-256color' + + yield + ensure + $stdout = stdout + ENV.replace(env) if env + end + end +end |