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|
# frozen_string_literal: true
require_relative '../helper'
describe Dalli::Protocol::ValueMarshaller do
describe 'options' do
subject { Dalli::Protocol::ValueMarshaller.new(options) }
describe 'value_max_bytes' do
describe 'by default' do
let(:options) { {} }
it 'sets value_max_bytes to 1MB by default' do
assert_equal(1024 * 1024, subject.value_max_bytes)
end
end
describe 'with a user specified value' do
let(:value_max_bytes) { rand(4 * 1024 * 1024) + 1 }
let(:options) { { value_max_bytes: value_max_bytes } }
it 'sets value_max_bytes to the user specified value' do
assert_equal subject.value_max_bytes, value_max_bytes
end
end
end
end
describe 'store' do
let(:marshaller) { Dalli::Protocol::ValueMarshaller.new(client_options) }
let(:client_options) { {} }
let(:val) { SecureRandom.hex(4096) }
let(:serialized_value) { Marshal.dump(val) }
let(:compressed_serialized_value) { Dalli::Compressor.compress(serialized_value) }
let(:compressed_raw_value) { Dalli::Compressor.compress(val) }
let(:key) { SecureRandom.hex(5) }
describe 'when the bytesize is under value_max_bytes' do
describe 'when the raw option is not specified' do
let(:req_options) { {} }
describe 'when the serialized value is above the minimum compression size' do
let(:val) { SecureRandom.hex(4096) }
it 'return the expected value and flags' do
assert_equal [compressed_serialized_value, 0x3], marshaller.store(key, val, req_options)
end
end
describe 'when the value is below the minimum compression size' do
let(:val) { SecureRandom.hex(128) }
it 'return the expected value and flags' do
assert_equal [serialized_value, 0x1], marshaller.store(key, val, req_options)
end
end
end
describe 'when the raw option is specified' do
let(:req_options) { { raw: true } }
describe 'when the value is above the minimum compression size' do
let(:val) { SecureRandom.hex(4096) }
it 'return the expected value and flags' do
assert_equal [compressed_raw_value, 0x2], marshaller.store(key, val, req_options)
end
end
describe 'when the value is below the minimum compression size' do
let(:val) { SecureRandom.hex(128) }
it 'return the expected value and flags' do
assert_equal [val, 0x0], marshaller.store(key, val, req_options)
end
end
end
end
describe 'when the value_max_bytes is the default 1MB' do
let(:client_options) { {} }
describe 'when the raw option is not specified' do
let(:req_options) { {} }
describe 'when the compressed, serialized value is above the value_max_bytes size' do
let(:val) { SecureRandom.hex(4 * 1024 * 1024) }
it 'raises an error with the expected message' do
exception = assert_raises Dalli::ValueOverMaxSize do
marshaller.store(key, val, req_options)
end
assert_equal "Value for #{key} over max size: #{1024 * 1024} <= #{compressed_serialized_value.size}",
exception.message
end
end
describe 'when the serialized value is below the value_max_bytes size' do
let(:val) { SecureRandom.hex(4096) }
it 'return the expected value and flags' do
assert_equal [compressed_serialized_value, 0x3], marshaller.store(key, val, req_options)
end
end
describe 'when the serialized value is below the value_max_bytes size and min compression size' do
let(:val) { SecureRandom.hex(128) }
it 'return the expected value and flags' do
assert_equal [serialized_value, 0x1], marshaller.store(key, val, req_options)
end
end
end
describe 'when the raw option is specified' do
let(:req_options) { { raw: true } }
describe 'when the raw compressed value is above the value_max_bytes size' do
let(:val) { SecureRandom.hex(4 * 1024 * 1024) }
it 'raises an error with the expected message' do
exception = assert_raises Dalli::ValueOverMaxSize do
marshaller.store(key, val, req_options)
end
assert_equal "Value for #{key} over max size: #{1024 * 1024} <= #{compressed_raw_value.size}",
exception.message
end
end
describe 'when the value is below the value_max_bytes size and above the minimum compression size' do
let(:val) { SecureRandom.hex(4096) }
it 'return the expected value and flags' do
assert_equal [compressed_raw_value, 0x2], marshaller.store(key, val, req_options)
end
end
describe 'when the raw value is below the value_max_bytes size and min compression size' do
let(:val) { SecureRandom.hex(128) }
it 'return the expected value and flags' do
assert_equal [val, 0x0], marshaller.store(key, val, req_options)
end
end
end
end
describe 'when the value_max_bytes is customized' do
let(:value_max_bytes) { 512 }
let(:client_options) { { value_max_bytes: value_max_bytes } }
describe 'when the raw option is not specified' do
let(:req_options) { {} }
describe 'when the compressed, serialized value is above the value_max_bytes size' do
let(:val) { SecureRandom.hex(4096) }
it 'raises an error with the expected message' do
exception = assert_raises Dalli::ValueOverMaxSize do
marshaller.store(key, val, req_options)
end
assert_equal "Value for #{key} over max size: #{value_max_bytes} <= #{compressed_serialized_value.size}",
exception.message
end
end
describe 'when the serialized value is below the value_max_bytes size and min compression size' do
let(:val) { SecureRandom.hex(128) }
it 'return the expected value and flags' do
assert_equal [serialized_value, 0x1], marshaller.store(key, val, req_options)
end
end
end
describe 'when the raw option is specified' do
let(:req_options) { { raw: true } }
describe 'when the raw compressed value is above the value_max_bytes size' do
let(:val) { SecureRandom.hex(4096) }
it 'raises an error with the expected message' do
exception = assert_raises Dalli::ValueOverMaxSize do
marshaller.store(key, val, req_options)
end
assert_equal "Value for #{key} over max size: #{value_max_bytes} <= #{compressed_raw_value.size}",
exception.message
end
end
describe 'when the raw value is below the value_max_bytes size and min compression size' do
let(:val) { SecureRandom.hex(128) }
it 'return the expected value and flags' do
assert_equal [val, 0x0], marshaller.store(key, val, req_options)
end
end
end
end
end
describe 'retrieve' do
let(:marshaller) { Dalli::Protocol::ValueMarshaller.new({}) }
let(:val) { SecureRandom.hex(4096) }
let(:serialized_value) { Marshal.dump(val) }
let(:compressed_serialized_value) { Dalli::Compressor.compress(serialized_value) }
let(:compressed_raw_value) { Dalli::Compressor.compress(val) }
it 'retrieves the value when the flags indicate the value is both compressed and serialized' do
assert_equal val, marshaller.retrieve(compressed_serialized_value, 0x3)
end
it 'retrieves the value when the flags indicate the value is just compressed' do
assert_equal val, marshaller.retrieve(compressed_raw_value, 0x2)
end
it 'retrieves the value when the flags indicate the value is just serialized' do
assert_equal val, marshaller.retrieve(serialized_value, 0x1)
end
it 'retrieves the value when the flags indicate the value is neither compressed nor serialized' do
assert_equal val, marshaller.retrieve(val, 0x0)
end
end
end
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