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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Database::PostgresqlAdapter::EmptyQueryPing do
describe '#active?' do
let(:adapter_class) do
Class.new do
include Gitlab::Database::PostgresqlAdapter::EmptyQueryPing
def initialize(connection, lock)
@connection = connection
@lock = lock
end
end
end
subject { adapter_class.new(connection, lock).active? }
let(:connection) { double(query: nil) }
let(:lock) { double }
before do
allow(lock).to receive(:synchronize).and_yield
end
it 'uses an empty query to check liveness' do
expect(connection).to receive(:query).with(';')
subject
end
it 'returns true if no error was signaled' do
expect(subject).to be_truthy
end
it 'returns false when an error occurs' do
expect(lock).to receive(:synchronize).and_raise(PG::Error)
expect(subject).to be_falsey
end
end
end
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