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# encoding: ascii-8bit
require 'spec/spec_helper'
describe MessagePack::Factory do
subject do
described_class.new
end
describe '#packer' do
it 'creates a Packer instance' do
subject.packer.should be_kind_of(MessagePack::Packer)
end
it 'creates new instance' do
subject.packer.object_id.should_not == subject.packer.object_id
end
end
describe '#unpacker' do
it 'creates a Unpacker instance' do
subject.unpacker.should be_kind_of(MessagePack::Unpacker)
end
it 'creates new instance' do
subject.unpacker.object_id.should_not == subject.unpacker.object_id
end
it 'creates unpacker with symbolize_keys option' do
unpacker = subject.unpacker(symbolize_keys: true)
unpacker.feed(MessagePack.pack({'k'=>'v'}))
unpacker.read.should == {:k => 'v'}
end
it 'creates unpacker with allow_unknown_ext option' do
unpacker = subject.unpacker(allow_unknown_ext: true)
unpacker.feed(MessagePack::ExtensionValue.new(1, 'a').to_msgpack)
unpacker.read.should == MessagePack::ExtensionValue.new(1, 'a')
end
it 'creates unpacker without allow_unknown_ext option' do
unpacker = subject.unpacker
unpacker.feed(MessagePack::ExtensionValue.new(1, 'a').to_msgpack)
expect{ unpacker.read }.to raise_error(MessagePack::UnknownExtTypeError)
end
end
class MyType
def initialize(a, b)
@a = a
@b = b
end
attr_reader :a, :b
def to_msgpack_ext
[a, b].pack('CC')
end
def self.from_msgpack_ext(data)
new(*data.unpack('CC'))
end
def to_msgpack_ext_only_a
[a, 0].pack('CC')
end
def self.from_msgpack_ext_only_b(data)
a, b = *data.unpack('CC')
new(0, b)
end
end
class MyType2 < MyType
end
describe '#registered_types' do
it 'returns Array' do
expect(subject.registered_types).to be_instance_of(Array)
end
it 'returns Array of Hash contains :type, :class, :packer, :unpacker' do
subject.register_type(0x20, ::MyType)
subject.register_type(0x21, ::MyType2)
list = subject.registered_types
expect(list.size).to eq(2)
expect(list[0]).to be_instance_of(Hash)
expect(list[1]).to be_instance_of(Hash)
expect(list[0].keys.sort).to eq([:type, :class, :packer, :unpacker].sort)
expect(list[1].keys.sort).to eq([:type, :class, :packer, :unpacker].sort)
expect(list[0][:type]).to eq(0x20)
expect(list[0][:class]).to eq(::MyType)
expect(list[0][:packer]).to eq(:to_msgpack_ext)
expect(list[0][:unpacker]).to eq(:from_msgpack_ext)
expect(list[1][:type]).to eq(0x21)
expect(list[1][:class]).to eq(::MyType2)
expect(list[1][:packer]).to eq(:to_msgpack_ext)
expect(list[1][:unpacker]).to eq(:from_msgpack_ext)
end
it 'returns Array of Hash which has nil for unregistered feature' do
subject.register_type(0x21, ::MyType2, unpacker: :from_msgpack_ext)
subject.register_type(0x20, ::MyType, packer: :to_msgpack_ext)
list = subject.registered_types
expect(list.size).to eq(2)
expect(list[0]).to be_instance_of(Hash)
expect(list[1]).to be_instance_of(Hash)
expect(list[0].keys.sort).to eq([:type, :class, :packer, :unpacker].sort)
expect(list[1].keys.sort).to eq([:type, :class, :packer, :unpacker].sort)
expect(list[0][:type]).to eq(0x20)
expect(list[0][:class]).to eq(::MyType)
expect(list[0][:packer]).to eq(:to_msgpack_ext)
expect(list[0][:unpacker]).to be_nil
expect(list[1][:type]).to eq(0x21)
expect(list[1][:class]).to eq(::MyType2)
expect(list[1][:packer]).to be_nil
expect(list[1][:unpacker]).to eq(:from_msgpack_ext)
end
end
describe '#type_registered?' do
it 'receive Class or Integer, and return bool' do
expect(subject.type_registered?(0x00)).to be_falsy
expect(subject.type_registered?(0x01)).to be_falsy
expect(subject.type_registered?(::MyType)).to be_falsy
end
it 'has option to specify what types are registered for' do
expect(subject.type_registered?(0x00, :both)).to be_falsy
expect(subject.type_registered?(0x00, :packer)).to be_falsy
expect(subject.type_registered?(0x00, :unpacker)).to be_falsy
expect{ subject.type_registered?(0x00, :something) }.to raise_error(ArgumentError)
end
it 'returns true if specified type or class is already registered' do
subject.register_type(0x20, ::MyType)
subject.register_type(0x21, ::MyType2)
expect(subject.type_registered?(0x00)).to be_falsy
expect(subject.type_registered?(0x01)).to be_falsy
expect(subject.type_registered?(0x20)).to be_truthy
expect(subject.type_registered?(0x21)).to be_truthy
expect(subject.type_registered?(::MyType)).to be_truthy
expect(subject.type_registered?(::MyType2)).to be_truthy
end
end
describe '#register_type' do
let :src do
::MyType.new(1, 2)
end
it 'registers #to_msgpack_ext and .from_msgpack_ext by default' do
subject.register_type(0x7f, ::MyType)
data = subject.packer.write(src).to_s
my = subject.unpacker.feed(data).read
my.a.should == 1
my.b.should == 2
end
it 'registers custom packer method name' do
subject.register_type(0x7f, ::MyType, packer: :to_msgpack_ext_only_a, unpacker: :from_msgpack_ext)
data = subject.packer.write(src).to_s
my = subject.unpacker.feed(data).read
my.a.should == 1
my.b.should == 0
end
it 'registers custom unpacker method name' do
subject.register_type(0x7f, ::MyType, packer: :to_msgpack_ext, unpacker: 'from_msgpack_ext_only_b')
data = subject.packer.write(src).to_s
my = subject.unpacker.feed(data).read
my.a.should == 0
my.b.should == 2
end
it 'registers custom proc objects' do
pk = lambda {|obj| [obj.a + obj.b].pack('C') }
uk = lambda {|data| ::MyType.new(data.unpack('C').first, -1) }
subject.register_type(0x7f, ::MyType, packer: pk, unpacker: uk)
data = subject.packer.write(src).to_s
my = subject.unpacker.feed(data).read
my.a.should == 3
my.b.should == -1
end
it 'does not affect existent packer and unpackers' do
subject.register_type(0x7f, ::MyType)
packer = subject.packer
unpacker = subject.unpacker
subject.register_type(0x7f, ::MyType, packer: :to_msgpack_ext_only_a, unpacker: :from_msgpack_ext_only_b)
data = packer.write(src).to_s
my = unpacker.feed(data).read
my.a.should == 1
my.b.should == 2
end
end
describe 'the special treatment of symbols with ext type' do
let(:packer) { subject.packer }
let(:unpacker) { subject.unpacker }
def symbol_after_roundtrip
packed_symbol = packer.pack(:symbol).to_s
unpacker.feed(packed_symbol).unpack
end
context 'if no ext type is registered for symbols' do
it 'converts symbols to string' do
expect(symbol_after_roundtrip).to eq 'symbol'
end
end
context 'if an ext type is registered for symbols' do
context 'if using the default serializer' do
before { subject.register_type(0x00, ::Symbol) }
it 'lets symbols survive a roundtrip' do
expect(symbol_after_roundtrip).to be :symbol
end
end
context 'if using a custom serializer' do
before do
class Symbol
alias_method :to_msgpack_ext_orig, :to_msgpack_ext
def to_msgpack_ext
self.to_s.codepoints.to_a.pack('n*')
end
end
class << Symbol
alias_method :from_msgpack_ext_orig, :from_msgpack_ext
def from_msgpack_ext(data)
data.unpack('n*').map(&:chr).join.to_sym
end
end
end
before { subject.register_type(0x00, ::Symbol) }
it 'lets symbols survive a roundtrip' do
expect(symbol_after_roundtrip).to be :symbol
end
after do
class Symbol
alias_method :to_msgpack_ext, :to_msgpack_ext_orig
end
class << Symbol
alias_method :from_msgpack_ext, :from_msgpack_ext_orig
end
end
end
end
end
describe 'DefaultFactory' do
it 'is a factory' do
MessagePack::DefaultFactory.should be_kind_of(MessagePack::Factory)
end
require_relative 'exttypes'
it 'should be referred by MessagePack.pack and MessagePack.unpack' do
MessagePack::DefaultFactory.register_type(DummyTimeStamp1::TYPE, DummyTimeStamp1)
MessagePack::DefaultFactory.register_type(DummyTimeStamp2::TYPE, DummyTimeStamp2, packer: :serialize, unpacker: :deserialize)
t = Time.now
dm1 = DummyTimeStamp1.new(t.to_i, t.usec)
expect(MessagePack.unpack(MessagePack.pack(dm1))).to eq(dm1)
dm2 = DummyTimeStamp1.new(t.to_i, t.usec)
expect(MessagePack.unpack(MessagePack.pack(dm2))).to eq(dm2)
end
end
end
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