require 'test_helper'

# File stat test class
class FileStat < Minitest::Test
  def setup
    FakeFS.activate!
    FakeFS::FileSystem.clear
  end

  def teardown
    FakeFS.deactivate!
  end

  def test_calling_lstat_should_create_a_new_file_stat_object
    File.open('foo', 'w') do |f|
      f << 'bar'
    end

    File.open('foo') do |f|
      assert_equal File::Stat, f.lstat.class
    end
  end

  def test_lstat_should_use_correct_file
    File.open('bar', 'w') do |f|
      f << '1'
    end

    File.open('bar') do |f|
      assert_equal 1, f.lstat.size
    end
  end

  def test_lstat_should_report_on_symlink_itself
    File.open('foo', 'w') { |f| f << 'some content' }
    File.symlink 'foo', 'my_symlink'

    refute_equal File.lstat('my_symlink').size, File.lstat('foo').size
  end

  def test_should_report_on_symlink_itself_with_size_instance_method
    File.open('foo', 'w') { |f| f << 'some content' }
    File.symlink 'foo', 'my_symlink'

    file = File.open('foo')
    symlink = File.open('my_symlink')

    refute_equal file.lstat.size, symlink.lstat.size
  end

  def test_symlink_size_is_size_of_path_pointed_to
    File.open('a', 'w') { |x| x << 'foobarbazfoobarbaz' }
    File.symlink 'a', 'one_char_symlink'
    assert_equal 1, File.lstat('one_char_symlink').size

    File.open('ab', 'w') { |x| x << 'foobarbazfoobarbaz' }
    File.symlink 'ab', 'two_char_symlink'
    assert_equal 2, File.lstat('two_char_symlink').size
  end
end
