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<h1 id="测试和-ci"><a class="header" href="#测试和-ci">测试和 CI</a></h1>
<p>Cargo 可以通过 <code>cargo test</code> 命令运行项目中的测试文件:它会在 <code>src/</code> 底下的文件寻找单元测试,也会在 <code>tests/</code> 目录下寻找集成测试。</p>
<pre><pre class="playground"><code class="language-rust edition2021"><span class="boring">#![allow(unused)]
</span><span class="boring">fn main() {
</span>$ cargo test
Compiling regex v1.5.0 (https://github.com/rust-lang/regex.git#9f9f693)
Compiling hello_world v0.1.0 (file:///path/to/package/hello_world)
Running target/test/hello_world-9c2b65bbb79eabce
running 0 tests
test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
<span class="boring">}</span></code></pre></pre>
<p>从上面结果可以看出,项目中实际上还没有任何测试代码。</p>
<p>事实上,除了单元测试、集成测试,<code>cargo test</code> 还会编译 <code>examples/</code> 下的示例文件以及<a href="https://course.rs/basic/comment.html#%E6%96%87%E6%A1%A3%E6%B5%8B%E8%AF%95doc-test">文档中的示例</a></p>
<p>如果希望深入学习如何在 Rust 编写及运行测试,请查阅<a href="https://course.rs/test/intro.html">该章节</a></p>
<h2 id="ci"><a class="header" href="#ci">CI</a></h2>
<p>持续集成是软件开发中异常重要的一环,大家应该都听说过 Jenkins它就是一个拥有悠久历史的持续集成工具。简单来说持续集成会定期拉取同一个项目中所有成员的相关代码对其进行自动化构建。</p>
<p>在没有持续集成前,首先开发者需要手动编译代码并运行单元测试、集成测试等基础测试,然后启动项目相关的所有服务,接着测试人员开始介入对整个项目进行回归测试、黑盒测试等系统化的测试,当测试通过后,最后再手动发布到指定的环境中运行,这个过程是非常冗长,且所有成员都需要同时参与的。</p>
<p>在有了持续集成后,只要编写好相应的编译、测试、发布配置文件,那持续集成平台会自动帮助我们完成整个相关的流程,期间无需任何人介入,高效且可靠。</p>
<h4 id="github-actions"><a class="header" href="#github-actions">GitHub Actions</a></h4>
<p>关于如何使用 <code>GitHub Actions</code> 进行持续集成,在<a href="https://course.rs/test/ci.html">之前的章节</a>已经有过详细的介绍,这里就不再赘述。</p>
<h4 id="travis-ci"><a class="header" href="#travis-ci">Travis CI</a></h4>
<p>以下是 <code>Travis CI</code> 需要的一个简单的示例配置文件:</p>
<pre><code class="language-yml">language: rust
rust:
- stable
- beta
- nightly
matrix:
allow_failures:
- rust: nightly
</code></pre>
<p>以上配置将测试所有的 <a href="https://course.rs/appendix/rust-version.html">Rust 发布版本</a>,但是 <code>nightly</code> 版本的构建失败不会导致全局测试的失败,可以查看 <a href="https://docs.travis-ci.com/user/languages/rust/">Travis CI Rust 文档</a> 获取更详细的说明。</p>
<h4 id="gitlab-ci"><a class="header" href="#gitlab-ci">Gitlab CI</a></h4>
<p>以下是一个示例 <code>.gitlab-ci.yml</code> 文件:</p>
<pre><code class="language-yml">stages:
- build
rust-latest:
stage: build
image: rust:latest
script:
- cargo build --verbose
- cargo test --verbose
rust-nightly:
stage: build
image: rustlang/rust:nightly
script:
- cargo build --verbose
- cargo test --verbose
allow_failure: true
</code></pre>
<p>这里将测试 <code>stable</code><code>nightly</code> 发布版本,同样的,<code>nightly</code> 下的测试失败不会导致全局测试的失败。查看 <a href="https://docs.gitlab.com/ee/ci/yaml/index.html">Gitlab CI 文档</a> 获取更详细的说明。</p>
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