56 lines
1.8 KiB
Ruby
56 lines
1.8 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Gitlab::Database::SharedModel do
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describe 'using an external connection' do
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let!(:original_connection) { described_class.connection }
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let(:new_connection) { double('connection') }
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it 'overrides the connection for the duration of the block', :aggregate_failures do
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expect_original_connection_around do
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described_class.using_connection(new_connection) do
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expect(described_class.connection).to be(new_connection)
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end
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end
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end
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it 'does not affect connections in other threads', :aggregate_failures do
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expect_original_connection_around do
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described_class.using_connection(new_connection) do
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expect(described_class.connection).to be(new_connection)
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Thread.new do
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expect(described_class.connection).not_to be(new_connection)
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end.join
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end
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end
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end
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context 'when the block raises an error', :aggregate_failures do
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it 're-raises the error, removing the overridden connection' do
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expect_original_connection_around do
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expect do
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described_class.using_connection(new_connection) do
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expect(described_class.connection).to be(new_connection)
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raise 'here comes an error!'
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end
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end.to raise_error(RuntimeError, 'here comes an error!')
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end
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end
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end
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def expect_original_connection_around
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# For safety, ensure our original connection is distinct from our double
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# This should be the case, but in case of something leaking we should verify
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expect(original_connection).not_to be(new_connection)
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expect(described_class.connection).to be(original_connection)
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yield
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expect(described_class.connection).to be(original_connection)
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end
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end
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end
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