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# rubocop:todo all
require 'spec_helper'
describe BSON::ByteBuffer do
describe '#get_byte' do
let(:buffer) do
described_class.new(BSON::Int32::BSON_TYPE)
end
let!(:byte) do
buffer.get_byte
end
it 'gets the byte from the buffer' do
expect(byte).to eq(BSON::Int32::BSON_TYPE)
end
it 'increments the read position by 1' do
expect(buffer.read_position).to eq(1)
end
end
describe '#get_bytes' do
let(:string) do
"#{BSON::Int32::BSON_TYPE}#{BSON::Int32::BSON_TYPE}"
end
let(:buffer) do
described_class.new(string)
end
let!(:bytes) do
buffer.get_bytes(2)
end
it 'gets the bytes from the buffer' do
expect(bytes).to eq(string)
end
it 'increments the position by the length' do
expect(buffer.read_position).to eq(string.bytesize)
end
end
describe '#get_cstring' do
let(:buffer) do
described_class.new("testing#{BSON::NULL_BYTE}")
end
let!(:string) do
buffer.get_cstring
end
it 'gets the cstring from the buffer' do
expect(string).to eq("testing")
end
it 'increments the position by string length + 1' do
expect(buffer.read_position).to eq(8)
end
end
describe '#get_double' do
let(:buffer) do
described_class.new(12.5.to_bson.to_s)
end
let!(:double) do
buffer.get_double
end
it 'gets the double from the buffer' do
expect(double).to eq(12.5)
end
it 'increments the read position by 8' do
expect(buffer.read_position).to eq(8)
end
end
describe '#get_int32' do
let(:buffer) do
described_class.new(12.to_bson.to_s)
end
let!(:int32) do
buffer.get_int32
end
it 'gets the int32 from the buffer' do
expect(int32).to eq(12)
end
it 'increments the position by 4' do
expect(buffer.read_position).to eq(4)
end
end
describe '#get_uint32' do
context 'when using 2^32-1' do
let(:buffer) do
described_class.new(4294967295.to_bson.to_s)
end
let!(:int32) do
buffer.get_uint32
end
it 'gets the uint32 from the buffer' do
expect(int32).to eq(4294967295)
end
it 'increments the position by 4' do
expect(buffer.read_position).to eq(4)
end
end
context 'when using 2^32-2' do
let(:buffer) do
described_class.new(4294967294.to_bson.to_s)
end
let!(:int32) do
buffer.get_uint32
end
it 'gets the uint32 from the buffer' do
expect(int32).to eq(4294967294)
end
it 'increments the position by 4' do
expect(buffer.read_position).to eq(4)
end
end
context 'when using 0' do
let(:buffer) do
described_class.new(0.to_bson.to_s)
end
let!(:int32) do
buffer.get_uint32
end
it 'gets the uint32 from the buffer' do
expect(int32).to eq(0)
end
it 'increments the position by 4' do
expect(buffer.read_position).to eq(4)
end
end
end
describe '#get_int64' do
let(:buffer) do
described_class.new((Integer::MAX_64BIT - 1).to_bson.to_s)
end
let!(:int64) do
buffer.get_int64
end
it 'gets the int64 from the buffer' do
expect(int64).to eq(Integer::MAX_64BIT - 1)
end
it 'increments the position by 8' do
expect(buffer.read_position).to eq(8)
end
end
describe '#get_string' do
let(:buffer) do
described_class.new("#{8.to_bson.to_s}testing#{BSON::NULL_BYTE}")
end
let!(:string) do
buffer.get_string
end
it 'gets the string from the buffer' do
expect(string).to eq("testing")
end
it 'increments the position by string length + 5' do
expect(buffer.read_position).to eq(12)
end
end
end
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