*                                             <td>{@link MavenSession#getExecutionRootDirectory()} or
 *                                                 <code>System.getProperty( "user.dir" )</code> if null</td></tr>
 * <tr><td><code>mojoExecution</code></td>     <td></td>               <td>the actual {@link MojoExecution}</td></tr>

    /**
     * Locates the pom in the given directory.
     *
     * @param dir the directory to locate the pom for, never {@code null}
     * @return a {@code Source} pointing to the located pom or an empty {@code Optional} if none was found by this parser
     */
    @Nonnull
    Optional<Source> locate(@Nonnull Path dir);

    /**
     * Parse the model obtained previously by a previous call to {@link #locate(Path)}.

import static org.junit.jupiter.api.Assertions.assertEquals;

@PlexusTest
class PomConstructionWithSettingsTest {
    private static final String BASE_DIR = "src/test";

    private static final String BASE_POM_DIR = BASE_DIR + "/resources-settings";

    @Inject
    private DefaultProjectBuilder projectBuilder;

    @Inject
    private MavenRepositorySystem repositorySystem;

                    // will not trample each other plus workaround for JENKINS-52657
                    dir(isUnix() ? 'test' : "c:\\mvn-it-${EXECUTOR_NUMBER}.tmp") {
                        def WORK_DIR=pwd()
                        try {
                            dir ('maven') {
                                checkout scm
                                withEnv(["JAVA_HOME=${ tool "$jdkName" }",

        File basedir = new File(System.getProperty("java.io.tmpdir"), "test").getAbsoluteFile();

        String aligned = new DefaultPathTranslator().alignToBaseDirectory("${basedir}/dir", basedir);

        assertEquals(new File(basedir, "dir").getAbsolutePath(), aligned);
    }

    @Test
    void testUnalignToBasedirWherePathEqualsBasedir() {

                <property name="test.projects.repository" value="repositories/central" />

                <mkdir dir="${basedir}/target/test-classes/${test.projects.repository}/${test.projects.target.directory}/" />

 not sure the unified source directory structure addresses this issue.

 Properties

 maven.user.config.dir (system,default=${user.home}/.m2)
 maven.home            (system,user,default=${user.home}/m2)
 maven.repo.local      (system,user,default=${maven.user.config.dir}/repository)

 We need to define what happens in the when things are not setup correctly

 o ~/.m2 directory does not exist

        }
        return rootDirectory;
    }

    @Nonnull
    default String getNoRootMessage() {
        return UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE;
    }

    boolean isRootDirectory(Path dir);

            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>

  <profiles>
    <profile>
      <id>create-distribution-in-dir</id>
      <activation>
        <property>
          <name>distributionTargetDir</name>
        </property>
      </activation>
      <build>
        <plugins>
          <plugin>

        ExpressionEvaluator ee = createExpressionEvaluator(null, null, new Properties());

        Object value = ee.evaluate("${basedir}");

        assertEquals(System.getProperty("user.dir"), value);
    }

    @Test
    void testValueExtractionFromSystemPropertiesWithMissingProject() throws Exception {
        String sysprop = "PPEET_sysprop1";