teeworlds_network/spec/04_packer_spec.rb

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2022-11-06 12:35:10 +00:00
# frozen_string_literal: true
require_relative '../lib/packer'
describe 'Packer', :packer do
context 'Pack strings' do
it 'Should pack a single string' do
expect(Packer.pack_str('A')).to eq([65, 0])
end
end
context 'Pack single byte integers' do
it 'Should pack positive' do
expect(Packer.pack_int(1)).to eq([1])
expect(Packer.pack_int(3)).to eq([3])
expect(Packer.pack_int(16)).to eq([16])
expect(Packer.pack_int(63)).to eq([63])
end
it 'Should pack negative' do
expect(Packer.pack_int(-1)).to eq([64])
expect(Packer.pack_int(-2)).to eq([65])
end
it 'Should pack negative match binary' do
expect(Packer.pack_int(-1).first.to_s(2)).to eq('1000000')
expect(Packer.pack_int(-2).first.to_s(2)).to eq('1000001')
expect(Packer.pack_int(-3).first.to_s(2)).to eq('1000010')
expect(Packer.pack_int(-4).first.to_s(2)).to eq('1000011')
end
end
context 'Pack multi byte integers' do
it 'Should pack positive' do
expect(Packer.pack_int(64).map { |e| e.to_s(2).rjust(8, '0') }).to eq(%w[10000000 00000001])
expect(Packer.pack_int(64)).to eq([128, 1])
end
it 'Should pack negative' do
expect(Packer.pack_int(-65).map { |e| e.to_s(2).rjust(8, '0') }).to eq(%w[11000001 00000001])
end
it 'Should pack large numbers' do
expect(Packer.pack_int(99_999_999_999_999_999)).to eq([191, 131, 255, 147, 246, 194, 215, 232, 88])
end
end
end