As shown, you receive a warning message that the test database wasn't created because it already existed.

如上所示，您收到一条警告消息，指明测试数据库未创建，因为它已经存在。

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Finally, Rails rolls those changes back to return the database to the state that existed before the test method ran.

最后，Rails回滚这些变化，将数据库返回到测试方法运行之前的状态。

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A life forecasting method for aerospace relay was presented here according to the problem existed in the reliability screening test method for aerospace relay.

针对现有航天继电器可靠性筛选试验方法中存在的问题，提出了一种航天继电器寿命预测方法。

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The rumor long existed that Sequoia would test is intern applicants in a rather, um, novel way.

FORBES: Don Valentine, Venture Capitalist

"This compensation scheme has existed on the statute books since 1886 with its operation having stood the test of time for the last 125 years, " the ABI said.

BBC: Riot costs could 'decimate' police authorities' funds

In 2008, the city switched to a standardized, test-based admissions system in an attempt to cut down on favoritism that it said existed in the previous system, which allowed different districts to set their own rules.

WSJ: Testing Firm Is Under Fire Due to Errors Scoring School Exams