Java Hamcrest 的多个正确结果（是否有或匹配器？）
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Multiple correct results with Hamcrest (is there an or-matcher?)
提问by Mo.
I am relatively new to matchers. I am toying around with hamcrestin combination with JUnit and I kinda like it.
我对匹配器比较陌生。我正在将hamcrest与 JUnit 结合使用，我有点喜欢它。
Is there a way, to state that one of multiple choices is correct?
有没有办法声明多个选择之一是正确的？
Something like
就像是
assertThat( result, is( either( 1, or( 2, or( 3 ) ) ) ) ) //does not work in hamcrest
The method I am testing returns one element of a collection. The list may contain multiple candidates. My current implementation returns the first hit, but that is not a requirement. I would like my testcase to succeed, if any of the possible candidates is returned. How would you express this in Java?
我正在测试的方法返回集合的一个元素。该列表可能包含多个候选。我当前的实现返回第一个命中，但这不是必需的。如果返回任何可能的候选人，我希望我的测试用例成功。你会如何用 Java 表达这一点？
(I am open to hamcrest-alternatives)
（我对 hamcrest 替代品持开放态度）
采纳答案by marcospereira
assertThat(result, anyOf(equalTo(1), equalTo(2), equalTo(3)))
From Hamcrest tutorial:
来自Hamcrest 教程：
anyOf - matches if any matchers match, short circuits (like Java ||)
anyOf - 如果任何匹配器匹配，则匹配，短路（如 Java ||）
See also Javadoc.
另请参阅Javadoc。
Moreover, you could write your own Matcher, what is quite easy to do.
此外，您可以编写自己的 Matcher，这很容易做到。
回答by MatrixFrog
marcos is right, but you have a couple other options as well. First of all, there isan either/or:
marcos 是对的，但您还有其他一些选择。首先，有是一个非此即彼/或：
assertThat(result, either(is(1)).or(is(2)));
but if you have more than two items it would probably get unwieldy. Plus, the typechecker gets weird on stuff like that sometimes. For your case, you could do:
但如果你有两个以上的项目，它可能会变得笨拙。另外，类型检查器有时会在这样的事情上变得奇怪。对于你的情况，你可以这样做：
assertThat(result, isOneOf(1, 2, 3))
or if you already have your options in an array/Collection:
或者如果您已经在数组/集合中有您的选项：
assertThat(result, isIn(theCollection))
See also Javadoc.
另请参阅Javadoc。
