assertThat(callCount.get()).isEqualTo(2);
  }

  /**
   * On a concurrent computation that throws an unchecked exception, all threads should get the
   * (wrapped) exception, with the loader called only once. The result should not be cached (a later
   * request should call the loader again).
   */

import java.util.TreeSet;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullUnmarked;

/**
 * Run collection tests on wrappers from {@link Multimaps}.
 *
 * @author Jared Levy
 */
@GwtIncompatible // suite // TODO(cpovirk): set up collect/gwt/suites version
@NullUnmarked
@AndroidIncompatible // test-suite builders

        assertNotNull(pooled2);
        assertNotSame(pooled1, pooled2); // Different PooledObject instances
        assertSame(pooled1.getObject(), pooled2.getObject()); // Same wrapped object
    }

    /**
     * Test factory configuration independence
     */
    public void test_factoryConfigurationIndependence() {
        // Each factory instance has independent configuration

/// tip

You could use any other SQL or NoSQL database library you want (in some cases called <abbr title="Object Relational Mapper: a fancy term for a library where some classes represent SQL tables and instances represent rows in those tables">"ORMs"</abbr>), FastAPI doesn't force you to use anything. 😎

///

/// tip | Подсказка

Вы можете использовать любую другую библиотеку для работы с SQL или NoSQL базами данных (иногда их называют <abbr title="Object Relational Mapper – Объектно-реляционный маппер: термин для библиотеки, где некоторые классы представляют SQL-таблицы, а экземпляры представляют строки в этих таблицах">"ORMs"</abbr>), FastAPI ничего не навязывает. 😎

///

	if o.isSorted() {
		t.Fatal("Expected unsorted objects")
	}

	sorted := o.sort()
	if !o.isSorted() {
		t.Fatal("Expected sorted o objects")
	}
	if !sorted.entries().isSorted() {
		t.Fatal("Expected sorted wrapped objects")
	}
	want := loadMetacacheSampleNames
	for i, got := range o {
		if got.name != want[i] {
			t.Errorf("entry %d, want %q, got %q", i, want[i], got.name)
		}
	}
}

    assertThat(callCount.get()).isEqualTo(2);
  }

  /**
   * On a concurrent computation that throws an unchecked exception, all threads should get the
   * (wrapped) exception, with the loader called only once. The result should not be cached (a later
   * request should call the loader again).
   */

      implements CycleDetectingLock {

    // These ReadLock/WriteLock implementations shadow those in the
    // ReentrantReadWriteLock superclass. They are simply wrappers around the
    // internal Sync object, so this is safe since the shadowed locks are never
    // exposed or used.
    private final CycleDetectingReentrantReadLock readLock;

/// tip

您可以使用任何其他您想要的 SQL 或 NoSQL 数据库（在某些情况下称为 <abbr title="对象关系映射器（Object Relational Mapper，ORM），一个术语，用来指代一种库，其中某些类对应于 SQL 数据表，这些类的实例则对应于表中的行。">“ORM”</abbr>），FastAPI 不会强迫您使用任何东西。😎

///

由于 SQLModel 基于 SQLAlchemy，因此您可以轻松使用任何由 SQLAlchemy **支持的数据库**（这也让它们被 SQLModel 支持），例如：

* PostgreSQL
* MySQL
* SQLite

/// tip | Consejo

Puedes usar cualquier otro paquete de bases de datos SQL o NoSQL que quieras (en algunos casos llamadas <abbr title="Object Relational Mapper – Mapeador Objeto-Relacional: un término elegante para un paquete donde algunas clases representan tablas SQL y las instances representan filas en esas tablas">"ORMs"</abbr>), FastAPI no te obliga a usar nada. 😎

///