如果 JUnit 覆盖率低于某个阈值，如何使 Maven 构建失败 [英] How to fail a maven build, if JUnit coverage falls below certain threshold

问题描述

我从 sonar rest api 获取单元测试覆盖率指标.

I'm getting the Unit test coverage percentage metric from sonar rest api.

如果构建低于定义的值，我怎么会失败?

How can I fail the build if it falls below a defined value?

推荐答案

JaCoCo 提供了该功能.

使用LINE和BRANCH的配置规则COVEREDRATIO定义JaCoCo插件:

Define JaCoCo plugin using configuration rules COVEREDRATIO forLINE and BRANCH :

<plugin>
  <groupId>org.jacoco</groupId>
  <artifactId>jacoco-maven-plugin</artifactId>
  <version>0.7.7.201606060606</version>
  <executions>
    <execution>
      <id>default-prepare-agent</id>
      <goals>
        <goal>prepare-agent</goal>
      </goals>
    </execution>
    <execution>
      <id>check</id>
      <goals>
          <goal>check</goal>
      </goals>
      <configuration>
        <rules>
          <rule>
            <element>CLASS</element>
            <limits>
              <limit>
                <counter>LINE</counter>
                <value>COVEREDRATIO</value>
                <minimum>0.80</minimum>
              </limit>
              <limit>
                <counter>BRANCH</counter>
                <value>COVEREDRATIO</value>
                <minimum>0.80</minimum>
              </limit>
            </limits>
            <excludes>
              <exclude>com.xyz.ClassToExclude</exclude>
            </excludes>
          </rule>
        </rules>
      </configuration>
    </execution>
  </executions>
</plugin>

多种选择

支持的counter选项有:

• LINE
• 分店
• 说明
• 复杂性
• 方法
• 类

我相信 INSTRUCTION 将允许您进行一般检查(例如，验证整个项目的覆盖率至少为 0.80).

I believe INSTRUCTION would allow you to make a general check (verify that the whole project has at least 0.80 of coverage for instance).

INSTRUCTION 示例 - 80% 的总体指令覆盖率

此示例需要 80% 的整体指令覆盖率，并且没有必须错过课程:

This example requires an overall instruction coverage of 80% and no class must be missed:

<rules>
  <rule implementation="org.jacoco.maven.RuleConfiguration">
    <element>BUNDLE</element>
    <limits>
      <limit implementation="org.jacoco.report.check.Limit">
        <counter>INSTRUCTION</counter>
        <value>COVEREDRATIO</value>
        <minimum>0.80</minimum>
      </limit>
      <limit implementation="org.jacoco.report.check.Limit">
        <counter>CLASS</counter>
        <value>MISSEDCOUNT</value>
        <maximum>0</maximum>
      </limit>
    </limits>
  </rule>
</rules>

失败消息

如果覆盖范围不符合预期，则会失败并显示以下消息:

Message on failure

If the coverage isn't as expected, it fails with the following message:

[WARNING] Rule violated for class com.sampleapp.SpringConfiguration: lines covered ratio is 0.00, but expected minimum is 0.80
[WARNING] Rule violated for class com.sampleapp.Launcher: lines covered ratio is 0.33, but expected minimum is 0.80
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------

排除

在上面的示例中，我设置了 <exclude>com.xyz.ClassToExclude</exclude>.我想你会发现你需要添加许多排除项.项目通常包含许多不可测试/测试的类(Spring 配置、Java bean ...).您也可以使用正则表达式.

Exclusions

In the example above, I set <exclude>com.xyz.ClassToExclude</exclude>. I think you'll find you need to add many exclusions. Projects usually contain many classes which aren't testable/tested (Spring Configuration, Java beans...). You may be able to use regular expression too.

• http://choudhury.com/blog/2014/02/25/enforcing-minimum-code-coverage
• http://www.eclemma.org/jacoco/trunk/doc/maven.html
• http://www.eclemma.org/jacoco/trunk/doc/check-mojo.html

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