Re: maven-plugin-test-harness

On Sat, 27 Dec 2025 at 00:11, Claude Warren <[email protected]> wrote:

> Sławomir,
>
> I seem to be a bit lost.  I am able to generate the test poms in testing
> directories.
>
> I am able to generate POMs and associated test files during the
> generate-test-sources phase.  My test code looks like:
>
>
> /**
>  * Generated test for config/withDefaults
>  */
> @Test
> @InjectMojo(goal = "check")
>
> @Basedir("target/test-classes/org/apache/rat/maven/stubs/config/withDefaults")
> public void configWithDefaultsTest(RatCheckMojo mojo) throws
> MojoExecutionException {
>     TestData testData = testDataMap.get("config/withDefaults");
>
>
> testData.setupFiles(Paths.get("target/test-classes/org/apache/rat/maven/stubs/config/withDefaults"));
>     if (testData.getExpectedException() != null) {
>
>
> assertThatThrownBy(mojo::execute).hasMessageContaining(testData.getExpectedException().getMessage());
>     } else {
>         mojo.execute();
>         ValidatorData validatorData = new ValidatorData(mojo.getOutput(),
> "src/test/resources/org/apache/rat/maven/config/noDefaults");
>         testData.getValidator().accept(validatorData);
>     }
> }
>
>
>
> The RatCheckMojo has a parameter :
>
>
> /** The xml output file. */
> @Parameter(defaultValue = "${project.build.directory}/.rat.xml", readonly =
> true)
> protected File xmlOutputFile;
>
>
> When the mojo executes, the "xmlOutputFile" is set to
>
> target/test-classes/org/apache/rat/maven/stubs/config/withDefaults/${project.build.directory}/.rat.xml
> So my question is how can I get the ${project.*} properties populated
> inside the test mojo under test?
>

MavenProject created for testing is a mock, which does not have mocked all
methods ....
https://github.com/apache/maven-plugin-testing/issues/245

You need add mocking for Maven project like:

@Inject
 MavenProject project;

....

 when(project.getBuild()).thenReturn(mock());
 when(project.getBuild().getDirectory()).thenReturn("target/test-classes/projects/run/target");


>
> I am trying to maintain a maven implementation that will support Maven 3.x
>
> The pom in the
> target/test-classes/org/apache/rat/maven/stubs/config/withDefaults
> directory
> would not work unless I added a "<project implementatikon=.../>" element.
> But this seems like it may be a bastardization halfway between the JUnit3
> and JUnit5 implementations.
>
> I am using
> <mavenVersion>3.9.12</mavenVersion>
> <mavenPluginTestingVersion>3.4.0</mavenPluginTestingVersion>
> <mavenPluginToolsVersion>3.15.2</mavenPluginToolsVersion>
>
> The code is in [1].  The tools submodule generates the test code as well as
> a base abstract class for the mojos.
>
> [1]
>
> https://github.com/apache/creadur-rat/tree/feature/restructure/apache-rat-plugin-parent
>
> Any assistance would be appreciated.
>
> Claude
>


-- 
Sławomir Jaranowski