/usr/lib/ruby/vendor_ruby/active_support/log_subscriber/test_helper.rb is in ruby-activesupport-3.2 3.2.16-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 | require 'active_support/log_subscriber'
require 'active_support/buffered_logger'
require 'active_support/notifications'
module ActiveSupport
class LogSubscriber
# Provides some helpers to deal with testing log subscribers by setting up
# notifications. Take for instance Active Record subscriber tests:
#
# class SyncLogSubscriberTest < ActiveSupport::TestCase
# include ActiveSupport::LogSubscriber::TestHelper
#
# def setup
# ActiveRecord::LogSubscriber.attach_to(:active_record)
# end
#
# def test_basic_query_logging
# Developer.all
# wait
# assert_equal 1, @logger.logged(:debug).size
# assert_match(/Developer Load/, @logger.logged(:debug).last)
# assert_match(/SELECT \* FROM "developers"/, @logger.logged(:debug).last)
# end
# end
#
# All you need to do is to ensure that your log subscriber is added to Rails::Subscriber,
# as in the second line of the code above. The test helpers are responsible for setting
# up the queue, subscriptions and turning colors in logs off.
#
# The messages are available in the @logger instance, which is a logger with limited
# powers (it actually does not send anything to your output), and you can collect them
# doing @logger.logged(level), where level is the level used in logging, like info,
# debug, warn and so on.
#
module TestHelper
def setup
@logger = MockLogger.new
@notifier = ActiveSupport::Notifications::Fanout.new
ActiveSupport::LogSubscriber.colorize_logging = false
@old_notifier = ActiveSupport::Notifications.notifier
set_logger(@logger)
ActiveSupport::Notifications.notifier = @notifier
end
def teardown
set_logger(nil)
ActiveSupport::Notifications.notifier = @old_notifier
end
class MockLogger
include ActiveSupport::BufferedLogger::Severity
attr_reader :flush_count
attr_accessor :level
def initialize(level = DEBUG)
@flush_count = 0
@level = level
@logged = Hash.new { |h,k| h[k] = [] }
end
def method_missing(level, message)
@logged[level] << message
end
def logged(level)
@logged[level].compact.map { |l| l.to_s.strip }
end
def flush
@flush_count += 1
end
ActiveSupport::BufferedLogger::Severity.constants.each do |severity|
class_eval <<-EOT, __FILE__, __LINE__ + 1
def #{severity.downcase}?
#{severity} >= @level
end
EOT
end
end
# Wait notifications to be published.
def wait
@notifier.wait
end
# Overwrite if you use another logger in your log subscriber:
#
# def logger
# ActiveRecord::Base.logger = @logger
# end
#
def set_logger(logger)
ActiveSupport::LogSubscriber.logger = logger
end
end
end
end
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