比较具有不同精度级别的 Date 对象 [英] Compare Date objects with different levels of precision

问题描述

我有一个 JUnit 测试失败，因为毫秒数不同.在这种情况下，我不关心毫秒.如何更改断言的精度以忽略毫秒(或我希望设置的任何精度)?

I have a JUnit test that fails because the milliseconds are different. In this case I don't care about the milliseconds. How can I change the precision of the assert to ignore milliseconds (or any precision I would like it set to)?

我想通过的失败断言示例:

Example of a failing assert that I would like to pass:

Date dateOne = new Date();
dateOne.setTime(61202516585000L);
Date dateTwo = new Date();
dateTwo.setTime(61202516585123L);
assertEquals(dateOne, dateTwo);

推荐答案

使用 DateFormat 对象，其格式仅显示您想要匹配的部分，并对结果字符串执行 assertEquals().您还可以轻松地将其包装在您自己的 assertDatesAlmostEqual() 方法中.

Use a DateFormat object with a format that shows only the parts you want to match and do an assertEquals() on the resulting Strings. You can also easily wrap that in your own assertDatesAlmostEqual() method.

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