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require 'spec_helper'
require 'stringio'
describe Mongo::Grid::File::Chunk do
let(:data) do
BSON::Binary.new('testing')
end
let(:file_id) do
BSON::ObjectId.new
end
let(:file_info) do
Mongo::Grid::File::Info.new(:files_id => file_id)
end
describe '#==' do
let(:chunk) do
described_class.new(:data => data, :files_id => file_id, :n => 5)
end
context 'when the other is not a chunk' do
it 'returns false' do
expect(chunk).to_not eq('test')
end
end
context 'when the other object is a chunk' do
context 'when the documents are equal' do
it 'returns true' do
expect(chunk).to eq(chunk)
end
end
context 'when the documents are not equal' do
let(:other) do
described_class.new(:data => data, :files_id => file_id, :n => 6)
end
it 'returns false' do
expect(chunk).to_not eq(other)
end
end
end
end
describe '.assemble' do
let(:data_size) do
Mongo::Grid::File::Chunk::DEFAULT_SIZE * 3
end
let(:raw_data) do
'testing'
end
let(:data) do
BSON::Binary.new(raw_data)
end
let(:assembled) do
described_class.assemble(chunks)
end
before do
(1..data_size).each{ |i| raw_data << '1' }
end
let(:chunks) do
described_class.split(raw_data, file_info)
end
it 'returns the chunks assembled into the raw data' do
expect(assembled).to eq(raw_data)
end
end
describe '#document' do
let(:chunk) do
described_class.new(:data => data, :files_id => file_id, :n => 5)
end
let(:document) do
chunk.document
end
it 'sets the data' do
expect(document[:data]).to eq(data)
end
it 'sets the files_id' do
expect(document[:files_id]).to eq(file_id)
end
it 'sets the position' do
expect(document[:n]).to eq(5)
end
it 'sets an object id' do
expect(document[:_id]).to be_a(BSON::ObjectId)
end
context 'when asking for the document multiple times' do
it 'returns the same document' do
expect(document[:_id]).to eq(chunk.document[:_id])
end
end
end
describe '#initialize' do
let(:chunk) do
described_class.new(:data => data, :files_id => file_id, :n => 5)
end
it 'sets the document' do
expect(chunk.data).to eq(data)
end
it 'sets a default id' do
expect(chunk.id).to be_a(BSON::ObjectId)
end
end
describe '#to_bson' do
let(:chunk) do
described_class.new(:data => data, :files_id => file_id, :n => 5)
end
let(:document) do
chunk.document
end
it 'returns the document as bson' do
expect(chunk.to_bson.to_s).to eq(document.to_bson.to_s)
end
end
describe '.split' do
context 'when the data is smaller than the default size' do
let(:raw_data) do
'testing'
end
let(:data) do
BSON::Binary.new(raw_data)
end
let(:chunks) do
described_class.split(raw_data, file_info)
end
let(:chunk) do
chunks.first
end
it 'returns a single chunk' do
expect(chunks.size).to eq(1)
end
it 'sets the correct chunk position' do
expect(chunk.n).to eq(0)
end
it 'sets the correct chunk data' do
expect(chunk.data).to eq(data)
end
end
context 'when the data is larger that the default size' do
let(:data_size) do
Mongo::Grid::File::Chunk::DEFAULT_SIZE * 3
end
let(:raw_data) do
'testing'
end
let(:data) do
BSON::Binary.new(raw_data)
end
let(:assembled) do
full_data = ''
chunks.each do |chunk|
full_data << chunk.data.data
end
full_data
end
before do
(1..data_size).each{ |i| raw_data << '1' }
end
let(:chunks) do
described_class.split(raw_data, file_info)
end
it 'returns the correct number of chunks' do
expect(chunks.size).to eq(4)
end
it 'sets the correct chunk positions' do
expect(chunks[0].n).to eq(0)
expect(chunks[1].n).to eq(1)
expect(chunks[2].n).to eq(2)
expect(chunks[3].n).to eq(3)
end
it 'does to miss any bytes' do
expect(assembled).to eq(raw_data)
end
end
end
end
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