字符串的 Hamcrest 匹配器，其中字符串包含一些随机值

发布于 2024-12-22 10:03:33 字数 845 浏览 2 评论 0原文

有没有办法将以下字符串与任何 hamcrest 匹配器进行匹配。

"{\"messageType\":\"identify\",\"_id\":\"7de9a446-2ced-4bda-af35-81e95ad2dc32\",\"address\":\"192.168.0.0\",\"port\":7070}"

该字符串被传递给一个方法。我使用 JMock 期望来匹配它。

问题：“72e3a446-2fed-4bda-ac35-34e95ab3dc32”部分是随机生成的UUID，它是在测试方法内部生成的。是否有一个 Hamcrest 字符串匹配器可以匹配类似的内容

new StringCompositeMatcher("{\"messageType\":\"identify\",\"_id\":\"", with(any(String.class)), "\"address\":\"192.168.0.0\",\"port\":7070}" )

它必须匹配以 "{\"messageType\":\"identify\",\"_id\":\" 开头的预期字符串是之后的任何字符串，并以 ",\"address\":\"192.168.0.0\",\"port\":7070}"

结尾编辑：解决方案

with(allOf(new StringStartsWith("{\"messageType\":\"identify\",\"_id\":\""), new StringEndsWith("\",\"address\":\"192.168.0.0\",\"port\":7070}")))

原文

Is there a way to match the following string with any of the hamcrest matchers.

"{\"messageType\":\"identify\",\"_id\":\"7de9a446-2ced-4bda-af35-81e95ad2dc32\",\"address\":\"192.168.0.0\",\"port\":7070}"

This string is passed to a method. I use JMock expectations to match it.

The problem: "72e3a446-2fed-4bda-ac35-34e95ab3dc32" part is random generated UUID, which is generated inside the tested method. Is there a Hamcrest String matcher which will match something like

new StringCompositeMatcher("{\"messageType\":\"identify\",\"_id\":\"", with(any(String.class)), "\"address\":\"192.168.0.0\",\"port\":7070}" )

It must match that the expected string begins with "{\"messageType\":\"identify\",\"_id\":\" there is any string after that, and ends with the ",\"address\":\"192.168.0.0\",\"port\":7070}"

EDIT: The solution

with(allOf(new StringStartsWith("{\"messageType\":\"identify\",\"_id\":\""), new StringEndsWith("\",\"address\":\"192.168.0.0\",\"port\":7070}")))

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此刻的回忆 2024-12-29 10:03:33

也许最优雅的方法是使用正则表达式，尽管没有内置的匹配器。但是，您可以轻松编写自己的。

或者，您可以将 startsWith() 和 endsWith() 与 allOf() 结合起来。

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风筝在阴天搁浅。 2024-12-29 10:03:33

它看起来像 JSON。为什么不使用 JSON 解析器？

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水波映月 2024-12-29 10:03:33

对于像我一样偶然发现这篇文章的人：hamcrest 2.0 引入了一个新的匹配器：matchesPattern 来匹配正则表达式模式。以下代码应该可以工作：

Dependency:

testCompile "org.hamcrest:hamcrest:2.0"

...

import static org.hamcrest.Matchers.matchesPattern;
import static org.hamcrest.MatcherAssert.assertThat;

...

assertThat(
        "{\"messageType\":\"identify\",\"_id\":\"7de9a446-2ced-4bda-af35-81e95ad2dc32\",\"address\":\"192.168.0.0\",\"port\":7070}",
        matchesPattern("\\{\"messageType\":\"identify\",\"_id\":\"[0-9a-z-]+\",\"address\":\"192.168.0.0\",\"port\":7070\\}")
);

注意： { 和 } 是 java 中的正则表达式字符，因此必须在匹配器字符串中转义。

For anyone stumbling onto this post like me: hamcrest 2.0 has introduced a new matcher: matchesPattern to match a regex pattern. The following code should work:

Dependency:

testCompile "org.hamcrest:hamcrest:2.0"

...

import static org.hamcrest.Matchers.matchesPattern;
import static org.hamcrest.MatcherAssert.assertThat;

...

assertThat(
        "{\"messageType\":\"identify\",\"_id\":\"7de9a446-2ced-4bda-af35-81e95ad2dc32\",\"address\":\"192.168.0.0\",\"port\":7070}",
        matchesPattern("\\{\"messageType\":\"identify\",\"_id\":\"[0-9a-z-]+\",\"address\":\"192.168.0.0\",\"port\":7070\\}")
);

Note: { and } are regex characters in java so must be escaped in the matcher string.

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