---> 100%
```

</div>

## Создание приложения с единственной моделью { #create-the-app-with-a-single-model }

Сначала мы создадим самую простую первую версию приложения с одной моделью **SQLModel**.

Позже мы улучшим его, повысив безопасность и универсальность, добавив **несколько моделей**. 🤓

### Создание моделей { #create-models }

Импортируйте `SQLModel` и создайте модель базы данных:

    name: str
    description: str | None = None
    price: float
    tax: float | None = None
    tags: set[str] = set()


@app.post(
    "/items/",
    response_model=Item,
    summary="Create an item",
    description="Create an item with all the information, name, description, price, tax and a set of unique tags",
)
async def create_item(item: Item):

client = TestClient(app)


def test_path_operation():
    response = client.put("/get-or-create-task/foo")
    print(response.content)
    assert response.status_code == 200, response.text
    assert response.json() == "Listen to the Bar Fighters"
    response = client.put("/get-or-create-task/bar")
    assert response.status_code == 201, response.text

    private static final long serialVersionUID = 1L;

    /**
     * Creates a plugin exception with message and cause.
     *
     * @param message the error message
     * @param cause the cause
     */
    public PluginException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Creates a plugin exception with message.
     *
     * @param message the error message

   *       {@link NullPointerException}.
   *   <li>If there is any visible constructor or visible static factory method declared by the
   *       class, all visible instance methods will be checked too using the instance created by
   *       invoking the constructor or static factory method.
   *   <li>If the constructor or factory method used to construct instance takes a parameter that

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.internal.smb2.create;

import jcifs.internal.smb2.lease.Smb2LeaseKey;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Lease V2 Create Context Request
 *
 * MS-SMB2 2.2.13.2.10
 */
public class LeaseV2CreateContextRequest implements CreateContextRequest {

    /**

 *
 * @author higa
 */
public class EmptyArgumentException extends ClIllegalArgumentException {

    private static final long serialVersionUID = 4625805280526951642L;

    /**
     * Creates an {@link EmptyArgumentException}.
     *
     * @param argName
     *            Name of the argument
     * @param messageCode
     *            Message code
     * @param args
     *            Array of arguments

      assertThat(cache.getUnchecked(KEY_PREFIX + i)).isEqualTo(VALUE_PREFIX + i);
      assertWithMessage("Loader should have been called @#%s", i).that(loader.wasCalled()).isTrue();
    }

    // expire new values we just created
    CacheTesting.expireEntries((LoadingCache<?, ?>) cache, EXPIRING_TIME, ticker);
    assertWithMessage("Eviction notifications must be received")
        .that(removalListener.getCount())
        .isEqualTo(21);

    // Two futures should not have the same toString, to avoid people asserting on it
    assertThat(SettableFuture.create().toString()).isNotEqualTo(SettableFuture.create().toString());
  }

  public void testToString_oom() throws Exception {
    SettableFuture<Object> future = SettableFuture.create();
    future.set(
        new Object() {
          @Override
          public String toString() {

  public void testRemove() {
    Iterator<String> iterator = create();

    assertTrue(iterator.hasNext());
    assertEquals("a", iterator.next());
    assertThrows(UnsupportedOperationException.class, () -> iterator.remove());
  }

  @SuppressWarnings("DoNotCall")
  public void testAdd() {
    ListIterator<String> iterator = create();

    assertTrue(iterator.hasNext());
    assertEquals("a", iterator.next());