require 'test/unit'
require File.join(File.expand_path(File.dirname(__FILE__)), 'gemutilities')
require 'rubygems/ext'

class TestGemExtConfigureBuilder < RubyGemTestCase

  def setup
    super

    @makefile_body =  "all:\n\t@echo ok\ninstall:\n\t@echo ok"

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

    FileUtils.mkdir_p @ext
    FileUtils.mkdir_p @dest_path
  end

  def test_self_build
    return if RUBY_PLATFORM =~ /mswin/ # HACK

    File.open File.join(@ext, './configure'), 'w' do |configure|
      configure.puts "#!/bin/sh\necho \"#{@makefile_body}\" > Makefile"
    end

    output = []

    Dir.chdir @ext do
      Gem::Ext::ConfigureBuilder.build nil, nil, @dest_path, output
    end

    expected = [
      "sh ./configure --prefix=#{@dest_path}",
      "", "make", "ok\n", "make install", "ok\n"
    ]

    assert_equal expected, output
  end

  def test_self_build_fail
    return if RUBY_PLATFORM =~ /mswin/ # HACK
    output = []

    error = assert_raise Gem::InstallError do
      Dir.chdir @ext do
        Gem::Ext::ConfigureBuilder.build nil, nil, @dest_path, output
      end
    end

    shell_error_msg = %r{(\./configure: No such file or directory)|(Can't open \./configure)}
    sh_prefix_configure = "sh ./configure --prefix="
    
    expected = %r(configure failed:

#{Regexp.escape sh_prefix_configure}#{Regexp.escape @dest_path}
.*?: #{shell_error_msg}
)

    assert_match expected, error.message

    assert_equal "#{sh_prefix_configure}#{@dest_path}", output.shift
    assert_match %r(#{shell_error_msg}\n), output.shift
    assert_equal true, output.empty?
  end

  def test_self_build_has_makefile
    File.open File.join(@ext, 'Makefile'), 'w' do |makefile|
      makefile.puts @makefile_body
    end

    output = []
    Dir.chdir @ext do
      Gem::Ext::ConfigureBuilder.build nil, nil, @dest_path, output
    end

    case RUBY_PLATFORM
    when /mswin/ then
      assert_equal 'nmake', output[0]
      assert_equal 'nmake install', output[2]
    else
      assert_equal 'make', output[0]
      assert_equal 'make install', output[2]
    end
  end

end