Assertions are the tests and as you will see in the following section, there are a number of assert statements that you can use for Rails application testing.
断言就是测试，正如在下一节中看到的，有许多可以用来测试Rails应用程序的断言语句。
If the test fixture runs without throwing any unhandled exceptions, and all of the Assert statements pass without problems, the test Results window shows a green light.
如果测试装置运行后没弹出任何未处理异常，并且所有断言都通过而没有问题，测试结果窗口显示绿色信号。
If the test fixture runs without throwing any unhandled exceptions, and all of the Assert statements pass without problems, the test Results window shows a green light.
如果测试装置运行后没弹出任何未处理异常，并且所有断言都通过而没有问题，测试结果窗口显示绿色信号。
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