require 'rubygems/test_case'
require 'rubygems/commands/pristine_command'

class TestGemCommandsPristineCommand < Gem::TestCase

  def setup
    super
    @cmd = Gem::Commands::PristineCommand.new
  end

  def test_execute
    a = quick_spec 'a' do |s| s.executables = %w[foo] end

    write_file File.join(@tempdir, 'bin', 'foo') do |fp|
      fp.puts "#!/usr/bin/ruby"
    end

    install_gem a

    foo_path = File.join @gemhome, 'gems', a.full_name, 'bin', 'foo'

    write_file foo_path do |io|
      io.puts 'I changed it!'
    end

    @cmd.options[:args] = %w[a]

    use_ui @ui do
      @cmd.execute
    end

    assert_equal "#!/usr/bin/ruby\n", File.read(foo_path), foo_path

    out = @ui.output.split "\n"

    assert_equal "Restoring gems to pristine condition...", out.shift
    assert_equal "Restored #{a.full_name}", out.shift
    assert_empty out, out.inspect
  end

  def test_execute_all
    a = quick_spec 'a' do |s| s.executables = %w[foo] end
    write_file File.join(@tempdir, 'bin', 'foo') do |fp|
      fp.puts "#!/usr/bin/ruby"
    end

    install_gem a

    gem_bin = File.join @gemhome, 'gems', a.full_name, 'bin', 'foo'

    FileUtils.rm gem_bin

    @cmd.handle_options %w[--all]

    use_ui @ui do
      @cmd.execute
    end

    assert File.exist?(gem_bin)

    out = @ui.output.split "\n"

    assert_equal "Restoring gems to pristine condition...", out.shift
    assert_equal "Restored #{a.full_name}", out.shift
    assert_empty out, out.inspect
  end

  def test_execute_no_exetension
    a = quick_spec 'a' do |s| s.extensions << 'ext/a/extconf.rb' end

    ext_path = File.join @tempdir, 'ext', 'a', 'extconf.rb'
    write_file ext_path do |io|
      io.write '# extconf.rb'
    end

    util_build_gem a

    @cmd.options[:args] = %w[a]
    @cmd.options[:extensions] = false

    use_ui @ui do
      @cmd.execute
    end

    out = @ui.output.split "\n"

    assert_equal 'Restoring gems to pristine condition...', out.shift
    assert_equal "Skipped #{a.full_name}, it needs to compile an extension",
                 out.shift
    assert_empty out, out.inspect
  end

  def test_execute_many
    a = quick_spec 'a'
    b = quick_spec 'b'

    install_gem a
    install_gem b

    @cmd.options[:args] = %w[a b]

    use_ui @ui do
      @cmd.execute
    end

    out = @ui.output.split "\n"

    assert_equal "Restoring gems to pristine condition...", out.shift
    assert_equal "Restored #{a.full_name}", out.shift
    assert_equal "Restored #{b.full_name}", out.shift
    assert_empty out, out.inspect
  end

  def test_execute_missing_cache_gem
    a_2 = quick_spec 'a', 2
    a_3 = quick_spec 'a', 3

    install_gem a_2
    install_gem a_3

    a_2_data = nil
    open File.join(@gemhome, 'cache', a_2.file_name), 'rb' do |fp|
      a_2_data = fp.read
    end

    util_setup_fake_fetcher
    util_setup_spec_fetcher a_2

    url = "http://gems.example.com/gems/#{a_2.file_name}"
    Gem::RemoteFetcher.fetcher.data[url] = a_2_data

    FileUtils.rm a_2.cache_file

    @cmd.options[:args] = %w[a]

    use_ui @ui do
      @cmd.execute
    end

    out = @ui.output.split "\n"

    [
      "Restoring gems to pristine condition...",
      "Restored a-1",
      "Cached gem for a-2 not found, attempting to fetch...",
      "Restored a-2",
      "Restored a-3.a",
      "Restored a-3",
    ].each do |line|
      assert_equal line, out.shift
    end

    assert_empty out, out.inspect
  end

  def test_execute_no_gem
    @cmd.options[:args] = %w[]

    e = assert_raises Gem::CommandLineError do
      use_ui @ui do
        @cmd.execute
      end
    end

    assert_match %r|at least one gem name|, e.message
  end

end