* variable lookup.
     *
     * @param props The properties to add the environment variables to, may be {@code null}.
     */
    public static void addEnvVars(Properties props) {
        if (props != null) {
            if (envVars == null) {
                Properties tmp = new Properties();
                boolean caseSensitive = !Os.IS_WINDOWS;

import com.google.inject.Scope;
import com.google.inject.name.Named;

/**
 * SessionScope
 */
public class SessionScope extends org.apache.maven.impl.di.SessionScope implements Scope {

    public <T> void seed(Class<T> clazz, Provider<T> value) {
        getScopeState().seed(clazz, value::get);
    }

    @Override
    public <T> Provider<T> scope(final Key<T> key, final Provider<T> unscoped) {

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

/**
 */
class CanonicalProjectBuilderTest extends AbstractMavenProjectTestCase {
    @Test
    void testProjectBuilder() throws Exception {
        File f = getFileForClasspathResource("canonical-pom.xml");

        MavenProject project = getProject(f);

    private ArtifactMetadataSource delegate;

    @Inject
    public SwitchableMetadataSource(@Named("test") ArtifactMetadataSource delegate) {
        this.delegate = delegate;
    }

    public void setDelegate(ArtifactMetadataSource delegate) {
        this.delegate = delegate;
    }

    @Override
    public ResolutionGroup retrieve(MetadataResolutionRequest request) throws ArtifactMetadataRetrievalException {

/**
 * Test the artifact resolution exception message
 *
 */
class ArtifactResolutionExceptionTest {
    private static final String LS = System.lineSeparator();

    @Test
    void testMissingArtifactMessageFormat() {
        String message = "Missing artifact";
        String indentation = "  ";
        String groupId = "aGroupId";
        String artifactId = "anArtifactId";

    //
    // or we can show it graphically as:
    //
    // p1 ---> p0 --> super model
    //
    // ----------------------------------------------------------------------

    @Test
    void testDependencyManagementDoesNotOverrideScopeOfCurrentArtifact() throws Exception {
        File localRepo = getLocalRepositoryPath();

        File pom0 = new File(localRepo, "p0/pom.xml");

import java.util.regex.Pattern;

import org.junit.jupiter.api.Test;

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

class ComparableVersionIT {

    @Test
    void test() throws Exception {
        Files.walkFileTree(Paths.get("target"), new SimpleFileVisitor<Path>() {
            Pattern mavenArtifactJar = Pattern.compile("maven-artifact-[\\d.]+(-SNAPSHOT)?\\.jar");

            @Override

    public ExtensionConfigurationModule(CoreExtensionEntry extension, UnaryOperator<String> callback) {
        this.extension = extension;
        this.callback = callback;
    }

    @Override
    public void configure(Binder binder) {
        if (extension.getKey() != null) {
            XmlNode configuration = extension.getConfiguration();
            if (configuration == null) {

        return stereotypes;
    }

    protected ArtifactDescriptorPolicy getArtifactDescriptorPolicy() {
        return new SimpleArtifactDescriptorPolicy(true, true);
    }

    protected void configureSessionBuilder(SessionBuilder session) {
        session.setDependencyTraverser(getDependencyTraverser());
        session.setDependencyManager(getDependencyManager());

                    return ERROR;
                }
            }
        }
    }

    private static class ReplHighlighter extends DefaultHighlighter {
        @Override
        protected void commandStyle(LineReader reader, AttributedStringBuilder sb, boolean enable) {
            if (enable) {
                if (reader.getTerminal().getNumericCapability(InfoCmp.Capability.max_colors) >= 256) {