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module QueriesHelper
def assert_no_queries(ignored_sql = nil, &block)
assert_queries(0, ignored_sql, &block)
end
def assert_queries(num = 1, ignored_sql = nil)
counter = SQLCounter.new(ignored_sql)
subscriber = ActiveSupport::Notifications.subscribe('sql.active_record', counter)
yield counter
queries = counter.log.size == 0 ? '' : "\nQueries:\n#{counter.log.join("\n")}"
assert_equal num, counter.log.size, "#{counter.log.size} instead of #{num} queries were executed.#{queries}"
ensure
ActiveSupport::Notifications.unsubscribe(subscriber)
end
class SQLCounter
cattr_accessor :ignored_sql
self.ignored_sql = [
/^PRAGMA (?!(table_info))/,
/^SELECT currval/,
/^SELECT CAST/,
/^SELECT @@IDENTITY/,
/^SELECT @@ROWCOUNT/,
/^SELECT @@FOREIGN_KEY_CHECKS/,
/^SET FOREIGN_KEY_CHECKS/,
/^SAVEPOINT/,
/^ROLLBACK TO SAVEPOINT/,
/^RELEASE SAVEPOINT/,
/^SHOW max_identifier_length/,
/^BEGIN/,
/^COMMIT/,
/^SHOW FULL FIELDS/,
/^SHOW TABLES LIKE/,
]
# FIXME: this needs to be refactored so specific database can add their own
# ignored SQL. This ignored SQL is for Oracle.
ignored_sql.concat [/^select .*nextval/i, /^SAVEPOINT/, /^ROLLBACK TO/, /^\s*select .* from all_triggers/im]
attr_reader :ignore
attr_reader :log
def initialize(ignore = nil)
@ignore = ignore || self.class.ignored_sql
@log = []
end
def call(_name, _start, _finish, _message_id, values)
sql = values[:sql]
# FIXME: this seems bad. we should probably have a better way to indicate
# the query was cached
return if 'CACHE' == values[:name] || ignore.any? { |x| x =~ sql }
log << sql
end
end
end
Version data entries
34 entries across 34 versions & 1 rubygems