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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Ci::Trace::Checksum do
let(:build) { create(:ci_build, :running) }
subject { described_class.new(build) }
context 'when build pending state exists' do
before do
create(:ci_build_pending_state, build: build, trace_checksum: 'crc32:d4777540')
end
context 'when matching persisted trace chunks exist' do
before do
create_chunk(index: 0, data: 'a' * 128.kilobytes)
create_chunk(index: 1, data: 'b' * 128.kilobytes)
create_chunk(index: 2, data: 'ccccccccccccccccc')
end
it 'calculates combined trace chunks CRC32 correctly' do
expect(subject.chunks_crc32).to eq 3564598592
expect(subject).to be_valid
end
end
context 'when trace chunks were persisted in a wrong order' do
before do
create_chunk(index: 0, data: 'b' * 128.kilobytes)
create_chunk(index: 1, data: 'a' * 128.kilobytes)
create_chunk(index: 2, data: 'ccccccccccccccccc')
end
it 'makes trace checksum invalid' do
expect(subject).not_to be_valid
end
end
context 'when one of the trace chunks is missing' do
before do
create_chunk(index: 0, data: 'a' * 128.kilobytes)
create_chunk(index: 2, data: 'ccccccccccccccccc')
end
it 'makes trace checksum invalid' do
expect(subject).not_to be_valid
end
end
context 'when checksums of persisted trace chunks do not match' do
before do
create_chunk(index: 0, data: 'a' * 128.kilobytes)
create_chunk(index: 1, data: 'X' * 128.kilobytes)
create_chunk(index: 2, data: 'ccccccccccccccccc')
end
it 'makes trace checksum invalid' do
expect(subject).not_to be_valid
end
end
context 'when persisted trace chunks are missing' do
it 'makes trace checksum invalid' do
expect(subject.state_crc32).to eq 3564598592
expect(subject).not_to be_valid
end
end
end
context 'when build pending state is missing' do
describe '#state_crc32' do
it 'returns nil' do
expect(subject.state_crc32).to be_nil
end
end
describe '#valid?' do
it { is_expected.not_to be_valid }
end
end
describe '#trace_chunks' do
before do
create_chunk(index: 0, data: 'abcdefg')
end
it 'does not load raw_data from a database store' do
subject.trace_chunks.first.then do |chunk|
expect(chunk).to be_database
expect { chunk.raw_data }
.to raise_error ActiveModel::MissingAttributeError
end
end
end
describe '#last_chunk' do
context 'when there are no chunks' do
it 'returns nil' do
expect(subject.last_chunk).to be_nil
end
end
context 'when there are multiple chunks' do
before do
create_chunk(index: 1, data: '1234')
create_chunk(index: 0, data: 'abcd')
end
it 'returns chunk with the highest index' do
expect(subject.last_chunk.chunk_index).to eq 1
end
end
end
def create_chunk(index:, data:)
create(:ci_build_trace_chunk, :persisted, build: build,
chunk_index: index,
initial_data: data)
end
end
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