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# frozen_string_literal: true
# rubocop: disable Gitlab/NamespacedClass
class ClickHouseTestRunner
include ClickHouseTestHelpers
def truncate_tables
ClickHouse::Client.configuration.databases.each_key do |db|
# Select tables with at least one row
query = tables_for(db).map do |table|
"(SELECT '#{table}' AS table FROM #{table} LIMIT 1)"
end.join(' UNION ALL ')
next if query.empty?
tables_with_data = ClickHouse::Client.select(query, db).pluck('table')
tables_with_data.each do |table|
ClickHouse::Client.execute("TRUNCATE TABLE #{table}", db)
end
end
end
def ensure_schema
return if @ensure_schema
clear_db
# run the schema SQL files
migrations_paths = ClickHouse::MigrationSupport::Migrator.migrations_paths
schema_migration = ClickHouse::MigrationSupport::SchemaMigration
migration_context = ClickHouse::MigrationSupport::MigrationContext.new(migrations_paths, schema_migration)
migrate(nil, migration_context)
@ensure_schema = true
end
private
def tables_for(db)
@tables ||= {}
@tables[db] ||= lookup_tables(db) - [ClickHouse::MigrationSupport::SchemaMigration.table_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
if example.example.metadata[:click_house] == :without_migrations
click_house_test_runner.clear_db
else
click_house_test_runner.ensure_schema
click_house_test_runner.truncate_tables
end
example.run
end
end
end
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