在test_helper中:
class Logger
@@log = []
def self.info(message)
@@log.push(message)
end
def self.log
@@log
end
end
但是运行测试时,似乎使用了常规的Logger。
如何为记录器创建模拟?
Rails 3.0.7。
您需要将记录器分配给Rails.logger for Rails才能使用它...要完全实现记录器,您需要实现所有方法http://www.ruby-doc.org/stdlib-1.9.3/libdoc/logger/rdoc/Logger.html(即#debug,#warn,#error, #fatal)
ENV["RAILS_ENV"] = "test"
require File.expand_path(File.dirname(__FILE__) + "/../config/environment")
class Logger
@@log = []
def self.info(message)
@@log.push(message)
end
def self.log
@@log
end
end
class TestLogCase < ActiveSupport::TestCase
def setup
Rails.logger = Logger
end
test "records the log" do
Rails.logger.info "My Message"
assert_true Logger.log.include?("My Message")
end
end
我建议一个更好的策略是使用Mocha模拟Rails记录器
class TestLogCase < ActiveSupport::TestCase
require 'mocha/mini_test'
test "records the log" do
Rails.logger.expects(:info).with('My message')
Rails.logger.info "My Message"
end
end
使用摩卡
before do
logger = mock
MyModel.any_instance.stubs(:logger).returns(logger)
logger.stubs(:debug).returns(true)
end