Rails 2.3.5 表在测试运行结束时而不是开始时由固定装置填充
我从包含架构但表中没有数据的测试数据库开始。我运行了一个测试，这样
cd test/
ruby unit/directive_test.rb
我就失败了，表明代码在数据表中没有找到数据。但是，我在运行该测试后查看表，数据现在位于表中。事实上，如果我立即再次运行测试，就不会出现任何失败。
因此，该夹具加载到表中的时间似乎太晚了，我的模块之一无法找到它。
- 夹具什么时候加载？
app/model/*.rb文件执行之后还是之前？ - 如果是在模型执行之后，有没有办法延迟加载？
运行 rake test:units 时也存在此问题，因为该任务完成后会清除测试数据。
I start with a test database containing the schema but with no data in the tables. I run a test like so
cd test/
ruby unit/directive_test.rb
I get failures indicating that the code found no data in the data tables. However, I look at the tables after running that test and the data is now in the the table. In fact, if I immediately run the test again I get no failures.
So it appears that the fixture is being loaded into the table too late for one of my modules to find it.
- When are the fixtures loaded? After or before the
app/model/*.rbfiles are executed? - If it is after the models are executed is there a way to delay the loading?
This issue is also relevant when running rake test:units since that task clears the test data after it finished.
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首先请参阅此线程并看看它是否可以帮助您。
如果您运行 Rail 任务 rake test:units ，它肯定会在运行代码之前加载所有装置。如果您只运行测试，并且您的单元测试没有引用 test_help.rb ，那么它可能不会加载固定装置。您应该尝试通过 rake 任务运行它。
我给你的另一个提示是你忘记了固定装置并使用工厂（这里我推荐factory_girl）。需要一些时间来适应，但这是值得的。夹具太难管理、更新等。
还有另一篇文章 很少解释工厂背后的概念。
first of all see this thread and see if it can help you.
if you run the rail task rake test:units it will for sure load all fixtures before you run your code. if you are running just the test, and your unit test has no reference to the test_help.rb probably it is not loading the fixtures. You should try to run it through the rake tasks.
Another tip that i give you is that you forget the fixtures and use factories (here i recommend factory_girl). It takes sometime to get used, but it worth. Fixtures are too hard to manage, update and etc.
there is another post explaing little about the concept behind factories.