// TODO Copied from the DefaultInterpolator. We likely want to resurrect the PathTranslator or at least a
        // similar component for re-usage
        if (file != null) {
            if (file.isAbsolute()) {
                // path was already absolute, just normalize file separator and we're done
            } else if (file.getPath().startsWith(File.separator)) {

        projects = new ProjectSorter(projects).getSortedProjects();

        assertEquals(parentProject, projects.get(0));

        // the order of these two is non-deterministic, based on when they're added to the reactor.
        assertThat(projects, hasItem(pluginProject));
        assertThat(projects, hasItem(pluginLevelDepProject));

                .flatMap(Function.identity())
                .collect(toSet());
    }

    /**
     * Check whether the required profiles were found in any of the projects we're building or the settings.
     * @param session the Maven session.
     * @param profileActivation the requested optional and required profiles.
     */

    private boolean isSpecificVersion(String version) {
        return !((version == null || version.isEmpty()) || version.startsWith("[") || version.startsWith("("));
    }

    // TODO !![jc; 28-jul-2005] check this; if we're using '-r' and there are aggregator tasks, this will result in
    // weirdness.
    public MavenProject getTopLevelProject() {
        return sortedProjects.stream()
                .filter(MavenProject::isExecutionRoot)

        return interpolate(model, context, true);
    }

    /**
     * Serialize the inbound Model instance to a StringWriter, perform the regex replacement to resolve
     * POM expressions, then re-parse into the resolved Model instance.
     * <p>
     * <b>NOTE:</b> This will result in a different instance of Model being returned!!!
     *

        // TODO Copied from the DefaultInterpolator. We likely want to resurrect the PathTranslator or at least a
        // similar component for re-usage
        if (file != null) {
            if (file.isAbsolute()) {
                // path was already absolute, just normalize file separator and we're done
            } else if (file.getPath().startsWith(File.separator)) {

** Testing mojos

  This can be a problem if the tests are more than simple unit tests;
  that is, if they require configuration of a server process, and
  subsequent testing in-container.

  Since we're only going to concern ourselves with states where localhost is
  still active, we only need to worry about this case when the server container
  is <<not>> installed on localhost. This allows the popular pattern of starting

                "<packaging>pom</packaging><properties><addedProperty>addedValue</addedProperty></properties>");
        Files.write(parent.toPath(), parentContent.getBytes(StandardCharsets.UTF_8));
        // re-build pom with modified parent
        ProjectBuildingResult result = projectBuilder.build(child, configuration);
        assertThat(result.getProject().getProperties(), hasKey((Object) "addedProperty"));
    }

    @Test

                "Expected 'ProjectBuildingException' not thrown.");
        assertThat(e.getResults(), contains(projectBuildingResultWithProblemMessage("Version must be a constant")));
    }

    /**
     * Ensure that when re-reading a pom, it should not use the cached Model
     *
     * @throws Exception in case of issue
     */
    @Test
    void rereadPom_mng7063() throws Exception {

            boolean retry = true;

            // this will run at most twice. The first time, the firstRun flag is turned off, and if the retry flag
            // is set on the first run, it will be turned off and not re-set on the second try. This is because the
            // only way the retry flag can be set is if ( firstRun == true ).
            while (firstRun || retry) {
                ChecksumObserver md5ChecksumObserver = null;