require 'test_helper'

class WickedPdfBinaryTest < ActiveSupport::TestCase
  setup do
    @saved_config = WickedPdf.config
    WickedPdf.config = {}
  end

  teardown do
    WickedPdf.config = @saved_config
  end

  test 'should extract old wkhtmltopdf version' do
    version_info_sample = "Name:V\n  wkhtmltopdf 0.9.9\n\nLicense:\n  Copyright (C) 2008,2009 Wkhtmltopdf Authors.\n\n\n\n  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n  This is free software: you are free to change and redistribute it. There is NO\n  WARRANTY, to the extent permitted by law.\n\nAuthors:\n  Written by Jakob Truelsen. Patches by Mrio Silva, Benoit Garret and Emmanuel\n  Bouthenot.\n"
    assert_equal Gem::Version.new('0.9.9'), binary.parse_version_string(version_info_sample)
  end

  test 'should extract new wkhtmltopdf version' do
    version_info_sample = "Name:\n  wkhtmltopdf 0.12.0 rc2\n\nLicense:\n  Copyright (C) 2010 wkhtmltopdf/wkhtmltoimage Authors.\n\n\n\n  License LGPLv3+: GNU Lesser General Public License version 3 or later\n  <http://gnu.org/licenses/lgpl.html>. This is free software: you are free to\n  change and redistribute it. There is NO WARRANTY, to the extent permitted by\n  law.\n\nAuthors:\n  Written by Jan Habermann, Christian Sciberras and Jakob Truelsen. Patches by\n  Mehdi Abbad, Lyes Amazouz, Pascal Bach, Emmanuel Bouthenot, Benoit Garret and\n  Mario Silva."
    assert_equal Gem::Version.new('0.12.0'), binary.parse_version_string(version_info_sample)
  end

  test 'should extract wkhtmltopdf version with nondigit symbols' do
    version_info_sample = "Name:\n  wkhtmltopdf 0.12.4b\n\nLicense:\n  Copyright (C) 2008,2009 Wkhtmltopdf Authors.\n\n\n\n  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n  This is free software: you are free to change and redistribute it. There is NO\n  WARRANTY, to the extent permitted by law.\n\nAuthors:\n  Written by Jakob Truelsen. Patches by Mrio Silva, Benoit Garret and Emmanuel\n  Bouthenot.\n"
    assert_equal Gem::Version.new('0.12.4b'), binary.parse_version_string(version_info_sample)
  end

  test 'should fallback to minimum version on parse error' do
    assert_equal WickedPdf::Binary::MINIMUM_BINARY_VERSION, binary.parse_version_string('')
  end

  test 'should raise exception when no path to wkhtmltopdf' do
    assert_raise RuntimeError do
      WickedPdf::Binary.new(' ')
    end
  end

  test 'should raise exception when wkhtmltopdf path is wrong' do
    assert_raise RuntimeError do
      WickedPdf::Binary.new('/i/do/not/exist/notwkhtmltopdf')
    end
  end

  test 'should raise exception when wkhtmltopdf is not executable' do
    begin
      tmp = Tempfile.new('wkhtmltopdf')
      fp = tmp.path
      File.chmod 0o000, fp

      assert_raise RuntimeError do
        WickedPdf::Binary.new(fp)
      end
    ensure
      tmp.delete
    end
  end

  test 'should raise exception if binary version is less than minimum' do
    version_info_sample = "Name:V\n  wkhtmltopdf 0.9.9\n\nLicense:\n  Copyright (C) 2008,2009 Wkhtmltopdf Authors.\n\n\n\n  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n  This is free software: you are free to change and redistribute it. There is NO\n  WARRANTY, to the extent permitted by law.\n\nAuthors:\n  Written by Jakob Truelsen. Patches by Mrio Silva, Benoit Garret and Emmanuel\n  Bouthenot.\n"
    Open3.expects(:popen3).returns([nil, mock('stdout', :gets => version_info_sample), nil])

    assert_raise RuntimeError do
      WickedPdf::Binary.new
    end
  end

  test 'should correctly locate wkhtmltopdf without bundler' do
    bundler_module = Bundler
    Object.send(:remove_const, :Bundler)

    assert_nothing_raised do
      WickedPdf::Binary.new
    end

    Object.const_set(:Bundler, bundler_module)
  end

  test 'should correctly locate wkhtmltopdf with bundler' do
    assert_nothing_raised do
      WickedPdf::Binary.new
    end
  end

  class LocationNonWritableTest < ActiveSupport::TestCase
    setup do
      @saved_config = WickedPdf.config
      WickedPdf.config = {}

      @old_home = ENV['HOME']
      ENV['HOME'] = '/not/a/writable/directory'
    end

    teardown do
      WickedPdf.config = @saved_config
      ENV['HOME'] = @old_home
    end

    test 'should correctly locate wkhtmltopdf with bundler while HOME is set to a non-writable directory' do
      assert_nothing_raised do
        WickedPdf::Binary.new
      end
    end
  end

  def binary(path = nil)
    WickedPdf::Binary.new(path)
  end
end