in maven-plugin-testing-harness/src/main/java/org/apache/maven/plugin/testing/MojoRule.java [320:330]
public void executeMojo(MavenSession session, MavenProject project, String goal, Xpp3Dom... parameters)
throws Exception {
MojoExecution execution = newMojoExecution(goal);
if (parameters != null) {
Xpp3Dom configuration = execution.getConfiguration();
for (Xpp3Dom parameter : parameters) {
configuration.addChild(parameter);
}
}
executeMojo(session, project, execution);
}