This is because tests must account for positive, negative, and otherwise invalid cases for each feature or function.

这是因为测试必须考虑为正，负，并以其他方式无效的情况下为每个特征或功能。

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Therefore, even if an account actually does provide a String value, it might be invalid, or Google might return more than one set of coordinates for it.

因此，即使帐户确实提供了一个string值，它也可能是无效的，或者Google可能会为它返回多个坐标集。

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The specified email account is invalid. Please enter a valid account and click Next to continue.

指定的电子邮件帐户无效。请输入有效帐户，然后单击“下一步”继续。

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Over-payment fraud, the victim receives an invalid monetary instrument with instructions to deposit it in a bank account and send excess funds or a percentage of the deposited money back to the sender.

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