func TestPreloadGoroutine(t *testing.T) {
	var wg sync.WaitGroup

	wg.Add(10)
	for i := 0; i < 10; i++ {
		go func() {
			defer wg.Done()
			var user2 []User
			tx := DB.Where("id = ?", 1).Session(&gorm.Session{})

			if err := tx.Preload("Team").Find(&user2).Error; err != nil {
				t.Error(err)
			}
		}()
	}
	wg.Wait()
}

func TestPreloadWithDiffModel(t *testing.T) {

Como parte de eso, necesitaba investigar, probar y usar muchas alternativas.

La historia de **FastAPI** es en gran parte la historia de sus predecesores.

Como se dice en la sección [Alternativas](alternatives.md){.internal-link target=_blank}:

<blockquote markdown="1">

**FastAPI** no existiría si no fuera por el trabajo previo de otros.

/// danger | Advertencia

Esta es una funcionalidad "avanzada".

Si apenas estás comenzando con **FastAPI**, quizás quieras saltar esta sección.

///

## Casos de uso { #use-cases }

Algunos casos de uso incluyen:

package org.apache.maven;

import org.apache.maven.execution.MavenExecutionRequest;
import org.apache.maven.execution.MavenExecutionResult;

/**
 * The main Maven execution entry point, which will execute a full Maven execution session.
 *
 * @see org.apache.maven.execution.MavenSession
 */
public interface Maven {
    @Deprecated
    @SuppressWarnings("checkstyle:constantname")
    String POMv4 = "pom.xml";

	if err = db.First(&User{}, "name = ?", "transaction").Error; err == nil {
		t.Fatalf("Should not find record after rollback, but got %v", err)
	}

	txDB := db.Where("fake_name = ?", "fake_name")
	tx2 := txDB.Session(&gorm.Session{NewDB: true}).Begin()
	user2 := *GetUser("transaction-2", Config{})
	if err = tx2.Save(&user2).Error; err != nil {
		t.Fatalf("No error should raise, but got %v", err)
	}

/**
 */
@Named("test")
@Singleton
public class TestRepositoryConnectorFactory implements RepositoryConnectorFactory {

    @Override
    public RepositoryConnector newInstance(RepositorySystemSession session, RemoteRepository repository)
            throws NoRepositoryConnectorException {
        return new TestRepositoryConnector(repository);
    }

    @Override
    public float getPriority() {
        return 0;

     *
     * @throws TransportProviderException if passed in remote repository has invalid remote URL or unsupported protocol.
     */
    @Nonnull
    Transport transport(@Nonnull Session session, @Nonnull RemoteRepository repository);

/**
 * Interface used to locate the root directory for a given project.
 *
 * The root locator is usually looked up from the plexus container.
 * One notable exception is the computation of the early {@code session.rootDirectory}
 * property which happens very early.  The implementation used in this case
 * will be discovered using the JDK service mechanism.
 *
 * The default implementation will look for a {@code .mvn} child directory

    private static final Logger LOGGER = LoggerFactory.getLogger(DistributionManagementArtifactRelocationSource.class);

    @Override
    public Artifact relocatedTarget(
            RepositorySystemSession session, ArtifactDescriptorResult artifactDescriptorResult, Model model) {
        DistributionManagement distMgmt = model.getDistributionManagement();
        if (distMgmt != null) {

			t.Fatalf("rows affected expects: %v, got %v", 1, results.RowsAffected)
		}

		u1 = user{} // important to reinitialize this before creating it again
		u2 := user{}
		db := DB.Session(&gorm.Session{CreateBatchSize: 10})

		if results := db.Create([]*user{&u1, &u2}); results.Error != nil {
			t.Fatalf("errors happened on create: %v", results.Error)
		} else if results.RowsAffected != 2 {