PersistedToolchains pt = new PersistedToolchains();
        merger.merge(pt, null, null);
        merger.merge(null, pt, null);
    }

    @Test
    void testMergeJdk() throws Exception {
        try (InputStream isDominant = MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks.xml");
                InputStream isRecessive = MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks.xml")) {

 * @since 3.0.2
 */
public abstract class AbstractEventSpy implements EventSpy {

    @Override
    public void init(Context context) throws Exception {}

    @Override
    public void onEvent(Object event) throws Exception {}

    @Override
    public void close() throws Exception {}

 */
@NullUnmarked
public class ChecksumHashFunctionTest extends TestCase {

  public void testCrc32_equalsChecksumValue() throws Exception {
    assertChecksum(CRC_32, "");
    assertChecksum(CRC_32, "Z");
    assertChecksum(CRC_32, "foobar");
  }

  public void testAdler32_equalsChecksumValue() throws Exception {
    assertChecksum(ADLER_32, "");
    assertChecksum(ADLER_32, "Z");
    assertChecksum(ADLER_32, "foobar");
  }

            @Override
            public Integer call() throws Exception {
              runLatch.countDown();
              taskLatch.await();
              if (throwException) {
                throw new IllegalStateException("Fail");
              }
              return 25;
            }
          });

  @Override
  protected void setUp() throws Exception {
    super.setUp();

    exec = newCachedThreadPool();

      try {
        logger
            .get()
            .log(
                SEVERE,
                String.format(Locale.ROOT, "Caught an exception in %s.  Shutting down.", t),
                e);
      } catch (Throwable errorInLogging) { // sneaky checked exception
        // If logging fails, e.g. due to missing memory, at least try to log the
        // message and the cause for the failed logging.

        @ValueSource(strings = {"4.0.0", "4.1.0", "4.2.0"})
        @DisplayName("should detect model version")
        void shouldDetectModelVersionFromNamespace(String targetVersion) throws Exception {
            String pomXml = PomBuilder.create()
                    .namespace("http://maven.apache.org/POM/" + targetVersion)
                    .modelVersion(targetVersion)
                    .groupId("test")

 * under the License.
 */
package org.apache.maven.artifact;

/**
 * Exception that occurs when an artifact file is used, but has not been resolved.
 *
 * TODO it may be better for artifact.getFile() to throw it - perhaps it is a runtime exception?
 */
public class DependencyResolutionRequiredException extends Exception {
    public DependencyResolutionRequiredException(Artifact artifact) {

/**
 * The Exception class throw by the {@link ToolchainsBuilder}.
 *
 * @since 4.0.0
 */
@Experimental
public class ToolchainsBuilderException extends MavenBuilderException {

    /**
     * @param message the message to give
     * @param e the {@link Exception}
     */
    public ToolchainsBuilderException(String message, Exception e) {
        super(message, e);
    }

    private final ArtifactResolverResult result;

    /**
     * @param message the message for the exception
     * @param e the exception itself
     * @param result the resolution result containing detailed information
     */
    public ArtifactResolverException(String message, Exception e, ArtifactResolverResult result) {
        super(message, e);
        this.result = result;
    }

/**
 * The Exception class throw by the {@link SettingsBuilder}.
 *
 * @since 4.0.0
 */
@Experimental
public class SettingsBuilderException extends MavenBuilderException {

    /**
     * @param message the message to give
     * @param e the {@link Exception}
     */
    public SettingsBuilderException(String message, Exception e) {
        super(message, e);
    }