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# frozen_string_literal: true
require_relative 'db_cleaner'
RSpec.configure do |config|
include DbCleaner
# Ensure the database is empty at the start of the suite run with :deletion strategy
# neither the sequence is reset nor the tables are vacuum, but this provides
# better I/O performance on machines with slower storage
config.before(:suite) do
setup_database_cleaner
DatabaseCleaner.clean_with(:deletion)
end
config.append_after(:context, :migration) do
delete_from_all_tables!
# Postgres maximum number of columns in a table is 1600 (https://github.com/postgres/postgres/blob/de41869b64d57160f58852eab20a27f248188135/src/include/access/htup_details.h#L23-L47).
# And since:
# "The DROP COLUMN form does not physically remove the column, but simply makes
# it invisible to SQL operations. Subsequent insert and update operations in the
# table will store a null value for the column. Thus, dropping a column is quick
# but it will not immediately reduce the on-disk size of your table, as the space
# occupied by the dropped column is not reclaimed.
# The space will be reclaimed over time as existing rows are updated."
# according to https://www.postgresql.org/docs/current/sql-altertable.html.
# We drop and recreate the database if any table has more than 1200 columns, just to be safe.
max_allowed_columns = 1200
tables_with_more_than_allowed_columns =
ApplicationRecord.connection.execute("SELECT attrelid::regclass::text AS table, COUNT(*) AS column_count FROM pg_attribute GROUP BY attrelid HAVING COUNT(*) > #{max_allowed_columns}")
if tables_with_more_than_allowed_columns.any?
tables_with_more_than_allowed_columns.each do |result|
puts "The #{result['table']} table has #{result['column_count']} columns."
end
puts "Recreating the database"
start = Gitlab::Metrics::System.monotonic_time
ActiveRecord::Tasks::DatabaseTasks.drop_current
ActiveRecord::Tasks::DatabaseTasks.create_current
ActiveRecord::Tasks::DatabaseTasks.load_schema_current
ActiveRecord::Tasks::DatabaseTasks.migrate
puts "Database re-creation done in #{Gitlab::Metrics::System.monotonic_time - start}"
end
end
config.around(:each, :delete) do |example|
self.class.use_transactional_tests = false
example.run
delete_from_all_tables!(except: deletion_except_tables)
self.class.use_transactional_tests = true
end
config.around(:each, :migration) do |example|
self.class.use_transactional_tests = false
example.run
delete_from_all_tables!
self.class.use_transactional_tests = true
end
end
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