require 'test_helper'

class ZipCentralDirectoryEntryTest < MiniTest::Test

  def test_read_from_stream
    File.open("test/data/testDirectory.bin", "rb") {
        |file|
      entry = ::Zip::Entry.read_c_dir_entry(file)

      assert_equal("longAscii.txt", entry.name)
      assert_equal(::Zip::Entry::DEFLATED, entry.compression_method)
      assert_equal(106490, entry.size)
      assert_equal(3784, entry.compressed_size)
      assert_equal(0xfcd1799c, entry.crc)
      assert_equal("", entry.comment)

      entry = ::Zip::Entry.read_c_dir_entry(file)
      assert_equal("empty.txt", entry.name)
      assert_equal(::Zip::Entry::STORED, entry.compression_method)
      assert_equal(0, entry.size)
      assert_equal(0, entry.compressed_size)
      assert_equal(0x0, entry.crc)
      assert_equal("", entry.comment)

      entry = ::Zip::Entry.read_c_dir_entry(file)
      assert_equal("short.txt", entry.name)
      assert_equal(::Zip::Entry::STORED, entry.compression_method)
      assert_equal(6, entry.size)
      assert_equal(6, entry.compressed_size)
      assert_equal(0xbb76fe69, entry.crc)
      assert_equal("", entry.comment)

      entry = ::Zip::Entry.read_c_dir_entry(file)
      assert_equal("longBinary.bin", entry.name)
      assert_equal(::Zip::Entry::DEFLATED, entry.compression_method)
      assert_equal(1000024, entry.size)
      assert_equal(70847, entry.compressed_size)
      assert_equal(0x10da7d59, entry.crc)
      assert_equal('', entry.comment)

      entry = ::Zip::Entry.read_c_dir_entry(file)
      assert_equal(nil, entry)
# Fields that are not check by this test:
#          version made by                 2 bytes
#          version needed to extract       2 bytes
#          general purpose bit flag        2 bytes
#          last mod file time              2 bytes
#          last mod file date              2 bytes
#          compressed size                 4 bytes
#          uncompressed size               4 bytes
#          disk number start               2 bytes
#          internal file attributes        2 bytes
#          external file attributes        4 bytes
#          relative offset of local header 4 bytes

#          file name (variable size)
#          extra field (variable size)
#          file comment (variable size)

    }
  end

  def test_ReadEntryFromTruncatedZipFile
    fragment=""
    File.open("test/data/testDirectory.bin") { |f| fragment = f.read(12) } # cdir entry header is at least 46 bytes
    fragment.extend(IOizeString)
    entry = ::Zip::Entry.new
    entry.read_c_dir_entry(fragment)
    fail "ZipError expected"
  rescue ::Zip::Error
  end

end