在Ruby on Rails中,assert_difference是一个测试帮助器,用于测试某个区块执行后,数据库中某个值的变化是否符合预期。它可以帮助你确保在执行某个操作后,数据库中的数据变化是正确的。 assert_difference的使用方法如下: 代码语言:ruby 复制 assert_difference 'Model.count', 1 do # 执行某个操作,例如创建一个新...
Rails' assert_difference忽略一些变化? 我有一个测试,我向有一个帐户的用户完成付款。该帐户包含余额并具有许多交易。 付款完成后,将创建一个交易并更新帐户余额。 使用assert_difference检查事务数量更改会给出预期结果。但是,使用assert_difference检查余额是否已更改。我可以看到SQL更新我的日志中的余额,但断言认为它...
assert_difference('Post.count') do post :create, :post => { :title => 'Hi', :body => 'This is my first post.'} end 和: assert_difference 'ActionMailer::Base.deliveries.size', +1 do post :invite_friend, :email => 'friend@example.com' end 即使我阅读文档,我也无法理解。 谢谢!
@@ -118,7 +118,8 @@ def assert_difference(expression, *args, &block) expressions.zip(exps, before) do |(code, diff), exp, before_value| actual = exp.call error = "#{code.inspect} didn't change by #{diff}, but by #{actual - before_value}" code_string = code.respond_to?(...
Motivation / Background With prism as the default parser in Ruby 3.4, the usual method of getting a procs source does not work anymore: #52937 @kddnewton was so kind as to anwser some questions in ...
乔布斯被认为是这个时代最聪明、最富有洞察力、最有远见的人。乔布斯认为如果做的产品，体验非常好，好到...
As verbs the difference between affirm and assert is that affirm is to agree, verify or concur; to answer positively while assert is...
Citing of the study of Hasmonean and Roman paleo-Hebrew scripts; Difference between old Hebrew and paleo-Hebrew. INSET: Paleo-Hebrew vs. Old Hebrew: The long and the short of it..CrossFrankMooreBiblical Archaeology Review
In automated testing withSelenium,AssertandVerifymethods play a crucial role in checking whether the application behaves as expected. Simply put, these methods help validate the result of a test. By understanding the difference between Assert and Verify methods and learning how to use these methods,...
assertonly check if a condition is true or not and throw an exception. Atry/exceptblock can run a few statements and check if any of them throw an exception so you can process it in theexceptpart. Examples: assert(1==2) will give you anAsertionError. ...