问题描述
有人知道为什么JUnit 4提供assertEquals(foo,bar)但不提供assertNotEqual(foo,bar)方法吗?
Does anybody know why JUnit 4 provides assertEquals(foo,bar) but not assertNotEqual(foo,bar) methods?
它提供了assertNotSame(对应于assertSame)和assertFalse(对应于assertTrue)，因此它们不费力地包含assertNotEqual似乎很奇怪.
It provides assertNotSame (corresponding to assertSame) and assertFalse (corresponding to assertTrue), so it seems strange that they didn't bother including assertNotEqual.
顺便说一句，我知道JUnit插件提供了我正在寻找的方法.我只是出于好奇而问.
By the way, I know that JUnit-addons provides the methods I'm looking for. I'm just asking out of curiosity.
推荐答案
我建议您使用较新的 assertThat() 样式断言，它可以轻松描述各种否定，并自动建立对您期望的结果以及断言失败时得到的结果的描述:
I'd suggest you use the newer assertThat() style asserts, which can easily describe all kinds of negations and automatically build a description of what you expected and what you got if the assertion fails:
assertThat(objectUnderTest, is(not(someOtherObject)));
assertThat(objectUnderTest, not(someOtherObject));
assertThat(objectUnderTest, not(equalTo(someOtherObject)));
这三个选项都是等效的，请选择最容易阅读的一个.
All three options are equivalent, choose the one you find most readable.
要使用方法的简单名称(并允许这种时态语法起作用)，您需要进行以下导入:
To use the simple names of the methods (and allow this tense syntax to work), you need these imports:
import static org.junit.Assert.*;
import static org.hamcrest.CoreMatchers.*;
这篇关于为什么JUnit不提供assertNotEquals方法?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！