62 lines
1.5 KiB
Ruby
62 lines
1.5 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe 'Database config initializer' do
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subject do
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load Rails.root.join('config/initializers/database_config.rb')
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end
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around do |example|
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original_config = ActiveRecord::Base.connection_db_config
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example.run
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ActiveRecord::Base.establish_connection(original_config)
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end
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before do
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allow(Gitlab::Runtime).to receive(:max_threads).and_return(max_threads)
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end
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let(:max_threads) { 8 }
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context 'when no custom headroom is specified' do
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it 'sets the pool size based on the number of worker threads' do
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old = ActiveRecord::Base.connection_db_config.pool
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expect(old).not_to eq(18)
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expect { subject }
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.to change { ActiveRecord::Base.connection_db_config.pool }
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.from(old)
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.to(18)
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end
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it 'overwrites custom pool settings' do
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config = Gitlab::Database.main.config.merge(pool: 42)
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allow(Gitlab::Database.main).to receive(:config).and_return(config)
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subject
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expect(ActiveRecord::Base.connection_db_config.pool).to eq(18)
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end
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end
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context "when specifying headroom through an ENV variable" do
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let(:headroom) { 15 }
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before do
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stub_env("DB_POOL_HEADROOM", headroom)
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end
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it "adds headroom on top of the calculated size" do
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old = ActiveRecord::Base.connection_db_config.pool
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expect { subject }
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.to change { ActiveRecord::Base.connection_db_config.pool }
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.from(old)
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.to(23)
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end
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end
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end
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