单元测试Maven Mojo - 组件和参数为空

Question

基于文档和邮件线程,我已经看到了将maven项目注入我的mojo的3种方法:

/**
  * Project instance
  * 
  * @parameter default-value="${project}"
  * @required
  * @readonly
  */
private MavenProject project;


@Component
private MavenProject project;


@Parameter(  expression = "${project}" )    
private MavenProject project;

但无论我选择哪一个,当我根据我在maven docs中找到的示例运行单元测试时,project始终为null.

public void testMojoGoal() throws Exception {
    File testPom = new File(getBasedir(),
            "src/test/resources/unit/basic-test/sample-sh-project-config.xml");

    ShunitResourcesMojo mojo = (ShunitResourcesMojo) lookupMojo("prepare",testPom);

    assertNotNull(mojo);

    mojo.execute();     
}

mojo执行包含(并失败)

Validate.notNull(project);

Answer 1

我只是在自己的插件上工作并遇到了同样的问题.我找不到它的文档,但我看了maven-ant-plugin(https://svn.apache.org/repos/asf/maven/plugins/trunk/maven-ant-plugin)看看如何他们做到了.

我假设这是内置的测试工具行为,但您必须在测试pom.xml中添加一个"project"参数,以将值设置为MavenProjectStub的子类,例如在"ant-test"测试中:

  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-ant-plugin</artifactId>
    <configuration>
      <project implementation="org.apache.maven.plugin.ant.stubs.AntTestMavenProjectStub"/>
      <settings implementation="org.apache.maven.plugin.ant.stubs.SettingsStub"/>
      <localRepository>${localRepository}</localRepository>
    </configuration>
  </plugin>

我希望你已经得到了你的答案,只是张贴给那些人.