如何使用Jacoco检查多模块Maven项目的最小代码覆盖率? [英] How to check minimum code coverage for multi-module maven project with jacoco?

问题描述

我想使用jacoco maven plugin在使用'check'目标的构建过程中检查代码覆盖的最低级别.

I want to use jacoco maven plugin for checking minimum level of code coverage during build process using 'check' goal.

对于单模块项目，一切正常. 但是对于多模块，我想检查所有模块的平均代码覆盖率，但是check目标分别检查每个模块.

For one-module project everything works fine. But for multi-module I want to check average level of code coverage from all modules, but check goal checks every module separately.

例如，模块1 具有 70％的代码覆盖率，模块2 具有 100％的代码覆盖率，在两个模块中所有行的代码覆盖率平均值为 85％. 而且我正在尝试将所有项目的代码覆盖率设置为80％，但是由于第一个模块，它失败了.

For example, module1 has 70% of code coverage, module2 has 100% code coverage, in average for all lines from both modules code coverage is 85%. And I am trying to set code coverage for all project to 80%, but it fails because of first module.

从pom:

<plugin>
    <groupId>org.jacoco</groupId>
    <artifactId>jacoco-maven-plugin</artifactId>
    <version>0.7.6.201602180812</version>
    <executions>
        <execution>
            <id>default-prepare-agent</id>
            <goals>
                <goal>prepare-agent</goal>
            </goals>
        </execution>
        <execution>
            <id>default-report</id>
            <phase>prepare-package</phase>
            <goals>
                <goal>report</goal>
            </goals>
        </execution>
        <execution>
            <id>default-check</id>
            <goals>
                <goal>check</goal>
            </goals>
            <configuration>
                <rules>
                    <rule>
                        <element>BUNDLE</element>
                        <limits>
                            <limit>
                                <counter>COMPLEXITY</counter>
                                <value>COVEREDRATIO</value>
                                <minimum>0.80</minimum>
                            </limit>
                        </limits>
                    </rule>
                </rules>
            </configuration>
        </execution>
    </executions>
</plugin>

推荐答案

简短的回答:不可能(在撰写本文时)仅使用Maven和Jacoco.

Short answer: not possible (at the time of writing) using merely Maven and Jacoco.

来自官方的jacoco github页面:

JaCoCo Maven当前的目标仅在单个模块上起作用:测试在模块内执行，并且仅覆盖同一模块内的代码.为每个模块分别创建覆盖率报告.没有对跨模块覆盖率的内置支持，也没有对多个模块的合并报告的支持.

The current JaCoCo Maven goals work on single modules only: Tests are executed within the module and contribute coverage only to code within the same module. Coverage reports are created for each module separately. There is no built-in support for cross-module coverage or combined reports for multiple modules.

因此，仅使用Maven和Jacoco不能满足您的要求.但是，您可以在企业设置中使用一种通用方法:Sonarqube，它将处理生成的jacoco文件(即jacoco.exec)，并通过其Jacoco集成(最新版本提供的开箱即用)来汇总报告和治理.

Hence your requirements cannot be met merely using Maven and Jacoco. You can however use a common approach in enterprise settings: Sonarqube, which will process the generated jacoco files (i.e. jacoco.exec) and aggregate reporting and governance via its Jacoco integration (provided out-of-the-box on its latest versions).

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