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# frozen_string_literal: true
# rubocop: disable Gitlab/NamespacedClass
class ClickHouseTestRunner
def truncate_tables
ClickHouse::Client.configuration.databases.each_key do |db|
tables_for(db).each do |table|
ClickHouse::Client.execute("TRUNCATE TABLE #{table}", db)
end
end
end
def ensure_schema
return if @ensure_schema
ClickHouse::Client.configuration.databases.each_key do |db|
# drop all tables
lookup_tables(db).each do |table|
ClickHouse::Client.execute("DROP TABLE IF EXISTS #{table}", db)
end
# run the schema SQL files
Dir[Rails.root.join("db/click_house/#{db}/*.sql")].each do |file|
ClickHouse::Client.execute(File.read(file), db)
end
end
@ensure_schema = true
end
private
def tables_for(db)
@tables ||= {}
@tables[db] ||= lookup_tables(db)
end
def lookup_tables(db)
ClickHouse::Client.select('SHOW TABLES', db).pluck('name')
end
end
# rubocop: enable Gitlab/NamespacedClass
RSpec.configure do |config|
click_house_test_runner = ClickHouseTestRunner.new
config.around(:each, :click_house) do |example|
with_net_connect_allowed do
click_house_test_runner.ensure_schema
click_house_test_runner.truncate_tables
example.run
end
end
end
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