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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Bitbucket::ExponentialBackoff, feature_category: :importers do
let(:service) { dummy_class.new }
let(:body) { 'test' }
let(:parsed_response) { instance_double(Net::HTTPResponse, body: body.to_json) }
let(:response) { double(Faraday::Response, body: body, parsed: parsed_response) }
let(:response_caller) { -> { response } }
let(:dummy_class) do
Class.new do
def logger
@logger ||= Logger.new(File::NULL)
end
def dummy_method(response_caller)
retry_with_exponential_backoff do
response_caller.call
end
end
include Bitbucket::ExponentialBackoff
end
end
subject(:execute) { service.dummy_method(response_caller) }
describe '.retry_with_exponential_backoff' do
let(:max_retries) { described_class::MAX_RETRIES }
context 'when the function succeeds on the first try' do
it 'calls the function once and returns its result' do
expect(response_caller).to receive(:call).once.and_call_original
expect(Gitlab::Json.parse(execute.parsed.body)).to eq(body)
end
end
context 'when the function response is an error' do
let(:error) { 'Rate limit for this resource has been exceeded' }
before do
stub_const("#{described_class.name}::INITIAL_DELAY", 0.0)
allow(Random).to receive(:rand).and_return(0.001)
end
it 'raises a RateLimitError if the maximum number of retries is exceeded' do
allow(response_caller).to receive(:call).and_raise(OAuth2::Error, error)
message = "Maximum number of retries (#{max_retries}) exceeded. #{error}"
expect do
execute
end.to raise_error(described_class::RateLimitError, message)
expect(response_caller).to have_received(:call).exactly(max_retries).times
end
end
end
end
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