132 lines
3.4 KiB
Ruby
132 lines
3.4 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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describe Gitlab::QueryLimiting::Transaction do
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after do
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Thread.current[described_class::THREAD_KEY] = nil
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end
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describe '.current' do
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it 'returns nil when there is no transaction' do
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expect(described_class.current).to be_nil
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end
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it 'returns the transaction when present' do
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Thread.current[described_class::THREAD_KEY] = described_class.new
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expect(described_class.current).to be_an_instance_of(described_class)
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end
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end
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describe '.run' do
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it 'runs a transaction and returns it and its return value' do
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trans, ret = described_class.run do
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10
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end
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expect(trans).to be_an_instance_of(described_class)
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expect(ret).to eq(10)
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end
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it 'removes the transaction from the current thread upon completion' do
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described_class.run do
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10
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end
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expect(Thread.current[described_class::THREAD_KEY]).to be_nil
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end
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end
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describe '#act_upon_results' do
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context 'when the query threshold is not exceeded' do
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it 'does nothing' do
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trans = described_class.new
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expect(trans).not_to receive(:raise)
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trans.act_upon_results
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end
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end
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context 'when the query threshold is exceeded' do
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let(:transaction) do
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trans = described_class.new
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trans.count = described_class::THRESHOLD + 1
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trans
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end
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it 'raises an error when this is enabled' do
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expect { transaction.act_upon_results }
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.to raise_error(described_class::ThresholdExceededError)
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end
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end
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end
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describe '#increment' do
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it 'increments the number of executed queries' do
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transaction = described_class.new
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expect(transaction.count).to be_zero
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transaction.increment
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expect(transaction.count).to eq(1)
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end
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end
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describe '#raise_error?' do
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it 'returns true in a test environment' do
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transaction = described_class.new
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expect(transaction.raise_error?).to eq(true)
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end
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it 'returns false in a production environment' do
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transaction = described_class.new
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stub_rails_env('production')
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expect(transaction.raise_error?).to eq(false)
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end
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end
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describe '#threshold_exceeded?' do
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it 'returns false when the threshold is not exceeded' do
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transaction = described_class.new
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expect(transaction.threshold_exceeded?).to eq(false)
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end
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it 'returns true when the threshold is exceeded' do
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transaction = described_class.new
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transaction.count = described_class::THRESHOLD + 1
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expect(transaction.threshold_exceeded?).to eq(true)
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end
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end
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describe '#error_message' do
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it 'returns the error message to display when the threshold is exceeded' do
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transaction = described_class.new
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transaction.count = max = described_class::THRESHOLD
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expect(transaction.error_message).to eq(
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"Too many SQL queries were executed: a maximum of #{max} " \
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"is allowed but #{max} SQL queries were executed"
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)
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end
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it 'includes the action name in the error message when present' do
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transaction = described_class.new
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transaction.count = max = described_class::THRESHOLD
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transaction.action = 'UsersController#show'
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expect(transaction.error_message).to eq(
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"Too many SQL queries were executed in UsersController#show: " \
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"a maximum of #{max} is allowed but #{max} SQL queries were executed"
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)
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end
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end
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end
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