<groupId>markerTest</groupId>
  <artifactId>testArtifactMissingVersion</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <dependencies>
    <dependency>
      <groupId>missing</groupId>
      <artifactId>missing</artifactId>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>2.0.2</version>
      </plugin>

        }
    }

    @Override
    public void artifactDescriptorMissing(RepositoryEvent event) {
        logger.warn("The POM for {} is missing, no dependency information available", event.getArtifact());
    }

        // execute
        ToolchainPrivate[] toolchains = toolchainManager.getToolchainsForType("unknown", session);

        // verify
        verify(logger).error("Missing toolchain factory for type: unknown. Possibly caused by misconfigured project.");
        assertEquals(0, toolchains.length);
    }

    @Test
    void testToolchainsForConfiguredType() throws Exception {

        List<Toolchain> toolchains = toolchainManager.getToolchains(session, "unknown", null);

        assertEquals(0, toolchains.size());
        verify(logger).error("Missing toolchain factory for type: unknown. Possibly caused by misconfigured project.");
    }

    @Test
    void testModelAndFactory() {
        MavenSession session = mock(MavenSession.class);

import org.apache.maven.api.services.ModelBuilderRequest;
import org.apache.maven.api.services.ModelProblemCollector;

/**
 * Checks the model for missing or invalid values.
 *
 */
public interface ModelValidator {
    /**
     * Checks the specified file model for missing or invalid values. This model is directly created from the POM
     * file and has not been subjected to inheritance, interpolation or profile/default injection.

        assertContains(problems.messages.get(0), "'mirrors.mirror.id' must not be 'local'");
        assertContains(problems.messages.get(1), "'mirrors.mirror.url' for local is missing");
        assertContains(problems.messages.get(2), "'mirrors.mirror.mirrorOf' for local is missing");
        assertContains(problems.messages.get(3), "'mirrors.mirror.id' must not contain any of these characters");
    }

    @Test

    void testRoundTripProfiles() {
        Random entropy = new Random();
        ActivationFile af = ActivationFile.newBuilder()
                .exists("exists" + Long.toHexString(entropy.nextLong()))
                .missing("missing" + Long.toHexString(entropy.nextLong()))
                .build();
        ActivationProperty ap = ActivationProperty.newBuilder()
                .name("name" + Long.toHexString(entropy.nextLong()))

        super(
                mojo.getPluginDescriptor(),
                "The parameters " + format(parameters) + " for goal " + mojo.getRoleHint() + " are missing or invalid");

        this.mojo = mojo;

        this.parameters = parameters;
    }

    private static String format(List<Parameter> parameters) {
        StringBuilder buffer = new StringBuilder(128);

 * under the License.
 */
package org.apache.maven.api.services;

/**
 * The transformerContextBuilder is responsible for initializing the TransformerContext.
 * In case rawModels are missing, it could do new buildingRequests on the ModelBuilder.
 *
 * @since 4.0.0
 */
public interface ModelTransformerContextBuilder {
    /**
     * This method is used to initialize the TransformerContext
     *

import org.codehaus.plexus.component.configurator.ConfigurationListener;

/**
 * A configuration listener to help validate the plugin configuration. For instance, check for required but missing
 * parameters.
 *
 */
class ValidatingConfigurationListener implements ConfigurationListener {
    private final Object mojo;

    private final ConfigurationListener delegate;