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# -*- coding: binary -*-
require 'spec_helper'
require 'packetfu'
module PacketFu
module PcapNG
describe IDB do
before(:each) { @idb = IDB.new }
it 'should have correct initialization values' do
expect(@idb).to be_a(IDB)
expect(@idb.endian).to eq(:little)
expect(@idb.type.to_i).to eq(PcapNG::IDB_TYPE.to_i)
expect(@idb.link_type.to_i).to eq(PcapNG::LINKTYPE_ETHERNET)
expect(@idb.snaplen.to_i).to eq(0)
expect(@idb.block_len.to_i).to eq(IDB::MIN_SIZE)
expect(@idb.block_len2).to eq(@idb.block_len)
end
it 'should decode tsresol on demand from its options' do
@idb.options.read [9, 1, 4].pack('vvC')
expect(@idb.ts_resol).to eq(1E-4)
@idb.options.read [9, 1, 0x83].pack('vvC')
expect(@idb.ts_resol(true)).to eq(2**-3)
end
context 'when reading' do
it 'should accept a String' do
str = ::File.read(::File.join(__dir__, '../..', 'test', 'sample.pcapng'))[52, 32]
expect { @idb.read(str) }.to_not raise_error
expect(@idb.type.to_i).to eq(PcapNG::IDB_TYPE.to_i)
expect(@idb.block_len.to_i).to eq(32)
expect(@idb.link_type.to_i).to eq(PcapNG::LINKTYPE_ETHERNET)
expect(@idb.snaplen.to_i).to eq(0xffff)
expect(@idb.has_options?).to be(true)
end
it 'should accept an IO' do
::File.open(::File.join(__dir__, '../..', 'test', 'sample.pcapng')) do |f|
f.seek(52, :CUR)
@idb.read f
end
expect(@idb.type.to_i).to eq(PcapNG::IDB_TYPE.to_i)
expect(@idb.block_len.to_i).to eq(32)
expect(@idb.link_type.to_i).to eq(PcapNG::LINKTYPE_ETHERNET)
expect(@idb.snaplen.to_i).to eq(0xffff)
expect(@idb.has_options?).to be(true)
end
end
end
end
end
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