require "active_support/test_case" require "active_support/testing/stream" require "active_support/core_ext/regexp" module ActiveRecord # = Active Record Test Case # # Defines some test assertions to test against SQL queries. class TestCase < ActiveSupport::TestCase #:nodoc: include ActiveSupport::Testing::Stream def teardown SQLCounter.clear_log end def capture_sql SQLCounter.clear_log yield SQLCounter.log_all.dup end def assert_sql(*patterns_to_match) capture_sql { yield } ensure failed_patterns = [] patterns_to_match.each do |pattern| failed_patterns << pattern unless SQLCounter.log_all.any?{ |sql| pattern === sql } end assert failed_patterns.empty?, "Query pattern(s) #{failed_patterns.map(&:inspect).join(', ')} not found.#{SQLCounter.log.size == 0 ? '' : "\nQueries:\n#{SQLCounter.log.join("\n")}"}" end def assert_queries(num = 1, options = {}) ignore_none = options.fetch(:ignore_none) { num == :any } SQLCounter.clear_log x = yield the_log = ignore_none ? SQLCounter.log_all : SQLCounter.log if num == :any assert_operator the_log.size, :>=, 1, "1 or more queries expected, but none were executed." else mesg = "#{the_log.size} instead of #{num} queries were executed.#{the_log.size == 0 ? '' : "\nQueries:\n#{the_log.join("\n")}"}" assert_equal num, the_log.size, mesg end x end def assert_no_queries(options = {}, &block) options.reverse_merge! ignore_none: true assert_queries(0, options, &block) end def assert_column(model, column_name, msg=nil) assert has_column?(model, column_name), msg end def assert_no_column(model, column_name, msg=nil) assert_not has_column?(model, column_name), msg end def has_column?(model, column_name) model.reset_column_information model.column_names.include?(column_name.to_s) end end class PostgreSQLTestCase < TestCase def self.run(*args) super if current_adapter?(:PostgreSQLAdapter) end end class Mysql2TestCase < TestCase def self.run(*args) super if current_adapter?(:Mysql2Adapter) end end class SQLite3TestCase < TestCase def self.run(*args) super if current_adapter?(:SQLite3Adapter) end end class SQLCounter class << self attr_accessor :ignored_sql, :log, :log_all def clear_log; self.log = []; self.log_all = []; end end clear_log self.ignored_sql = [/^PRAGMA/, /^SELECT currval/, /^SELECT CAST/, /^SELECT @@IDENTITY/, /^SELECT @@ROWCOUNT/, /^SAVEPOINT/, /^ROLLBACK TO SAVEPOINT/, /^RELEASE SAVEPOINT/, /^SHOW max_identifier_length/, /^BEGIN/, /^COMMIT/] # FIXME: this needs to be refactored so specific database can add their own # ignored SQL, or better yet, use a different notification for the queries # instead examining the SQL content. oracle_ignored = [/^select .*nextval/i, /^SAVEPOINT/, /^ROLLBACK TO/, /^\s*select .* from all_triggers/im, /^\s*select .* from all_constraints/im, /^\s*select .* from all_tab_cols/im] mysql_ignored = [/^SHOW FULL TABLES/i, /^SHOW FULL FIELDS/, /^SHOW CREATE TABLE /i, /^SHOW VARIABLES /, /^\s*SELECT (?:column_name|table_name)\b.*\bFROM information_schema\.(?:key_column_usage|tables)\b/im] postgresql_ignored = [/^\s*select\b.*\bfrom\b.*pg_namespace\b/im, /^\s*select tablename\b.*from pg_tables\b/im, /^\s*select\b.*\battname\b.*\bfrom\b.*\bpg_attribute\b/im, /^SHOW search_path/i] sqlite3_ignored = [/^\s*SELECT name\b.*\bFROM sqlite_master/im, /^\s*SELECT sql\b.*\bFROM sqlite_master/im] [oracle_ignored, mysql_ignored, postgresql_ignored, sqlite3_ignored].each do |db_ignored_sql| ignored_sql.concat db_ignored_sql end attr_reader :ignore def initialize(ignore = Regexp.union(self.class.ignored_sql)) @ignore = ignore 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] self.class.log_all << sql self.class.log << sql unless ignore.match?(sql) end end ActiveSupport::Notifications.subscribe("sql.active_record", SQLCounter.new) end