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# frozen_string_literal: true
require 'rubygems/test_case'
require 'rubygems/ext'

class TestGemExtRakeBuilder < Gem::TestCase

  def setup
    super

    @ext = File.join @tempdir, 'ext'
    @dest_path = File.join @tempdir, 'prefix'

    FileUtils.mkdir_p @ext
    FileUtils.mkdir_p @dest_path
  end

  def test_class_build
    create_temp_mkrf_file('task :default')
    output = []

    build_rake_in do |rake|
      Dir.chdir @ext do
        Gem::Ext::RakeBuilder.build 'mkrf_conf.rb', @dest_path, output
      end

      output = output.join "\n"

      refute_match %r%^rake failed:%, output
      assert_match %r%^#{Regexp.escape @@ruby} mkrf_conf\.rb%, output
      assert_match %r%^#{Regexp.escape rake} RUBYARCHDIR\\=#{Regexp.escape @dest_path} RUBYLIBDIR\\=#{Regexp.escape @dest_path}%, output
    end
  end

  # https://github.com/rubygems/rubygems/pull/1819
  #
  # It should not fail with a non-empty args list either
  def test_class_build_with_args
    create_temp_mkrf_file('task :default')
    output = []

    build_rake_in do |rake|
      Dir.chdir @ext do
        non_empty_args_list = ['']
        Gem::Ext::RakeBuilder.build 'mkrf_conf.rb', @dest_path, output, non_empty_args_list
      end

      output = output.join "\n"

      refute_match %r%^rake failed:%, output
      assert_match %r%^#{Regexp.escape @@ruby} mkrf_conf\.rb%, output
      assert_match %r%^#{Regexp.escape rake} RUBYARCHDIR\\=#{Regexp.escape @dest_path} RUBYLIBDIR\\=#{Regexp.escape @dest_path}%, output
    end
  end

  def test_class_build_no_mkrf_passes_args
    output = []

    build_rake_in do |rake|
      Dir.chdir @ext do
        Gem::Ext::RakeBuilder.build "ext/Rakefile", @dest_path, output, ["test1", "test2"]
      end

      output = output.join "\n"

      refute_match %r%^rake failed:%, output
      assert_match %r%^#{Regexp.escape rake} RUBYARCHDIR\\=#{Regexp.escape @dest_path} RUBYLIBDIR\\=#{Regexp.escape @dest_path} test1 test2%, output
    end
  end

  def test_class_build_fail
    create_temp_mkrf_file("task :default do abort 'fail' end")
    output = []

    build_rake_in(false) do |rake|
      error = assert_raises Gem::InstallError do
        Dir.chdir @ext do
          Gem::Ext::RakeBuilder.build "mkrf_conf.rb", @dest_path, output
        end
      end

      assert_match %r%^rake failed%, error.message
    end
  end

  def create_temp_mkrf_file(rakefile_content)
    File.open File.join(@ext, 'mkrf_conf.rb'), 'w' do |mkrf_conf|
      mkrf_conf.puts <<-EO_MKRF
        File.open("Rakefile","w") do |f|
          f.puts "#{rakefile_content}"
        end
      EO_MKRF
    end
  end

end