* Любые именованные аргументы, которые должны быть переданы функции задачи (`message="some notification"`).

## Встраивание зависимостей { #dependency-injection }

Vemos que vamos a necesitar algunas dependencias usadas en varios lugares de la aplicación.

Así que las ponemos en su propio módulo `dependencies` (`app/dependencies.py`).

Ahora utilizaremos una dependencia simple para leer un header `X-Token` personalizado:

{* ../../docs_src/bigger_applications/app_an_py310/dependencies.py hl[3,6:8] title["app/dependencies.py"] *}

/// tip | Consejo

Vemos que precisaremos de algumas dependências usadas em vários lugares da aplicação.

Então, as colocamos em seu próprio módulo de `dependencies` (`app/dependencies.py`).

Agora usaremos uma dependência simples para ler um cabeçalho `X-Token` personalizado:

{* ../../docs_src/bigger_applications/app_an_py310/dependencies.py hl[3,6:8] title["app/dependencies.py"] *}

/// tip | Dica

import org.elasticsearch.gradle.dependencies.CompileOnlyResolvePlugin;
import org.gradle.api.DefaultTask;
import org.gradle.api.JavaVersion;
import org.gradle.api.artifacts.Configuration;
import org.gradle.api.artifacts.Dependency;
import org.gradle.api.file.FileCollection;
import org.gradle.api.file.FileTree;
import org.gradle.api.provider.Property;
import org.gradle.api.specs.Spec;
import org.gradle.api.tasks.CacheableTask;

            checkout(new File(projectDir, "checkoutDir"))
        }
        """

        buildFile << """
            apply plugin: 'elasticsearch.yaml-rest-compat-test'

            // avoids a dependency problem in this test, the distribution in use here is inconsequential to the test
            import org.elasticsearch.gradle.testclusters.TestDistribution;

            dependencies {

    /**
     * Fess configuration settings.
     */
    @Resource
    protected FessConfig fessConfig;

    /**
     * Default constructor for RequestHeaderService.
     * Initializes the service with dependency injection.
     */
    public RequestHeaderService() {
        // Default constructor
    }

    /**
     * Retrieves a paginated list of request headers based on the provided pager criteria.
     *

    void connectLogon_invocation_isForwarded() throws Exception {
        // Act
        tree.connectLogon(context);

        // Assert - verify interaction with dependency
        verify(tree, times(1)).connectLogon(context);
        verify(tree, never()).close();
    }

    @Test
    @DisplayName("connectLogon accepts null context but still invokes")

{* ../../docs_src/security/tutorial002_an_py310.py hl[5,12:6] *}

## Створити залежність `get_current_user` { #create-a-get-current-user-dependency }

Створімо залежність `get_current_user`.

Пам'ятаєте, що залежності можуть мати підзалежності?

`get_current_user` матиме залежність із тим самим `oauth2_scheme`, який ми створили раніше.

    assert global_state["session_closed"] is True
    assert global_state["named_session_closed"] is True


def test_broken_scope() -> None:
    with pytest.raises(
        FastAPIError,
        match='The dependency "get_named_func_session" has a scope of "request", it cannot depend on dependencies with scope "function"',
    ):

        @app.websocket("/broken-scope")
        async def get_broken(

        assertEquals("boom", ex.getMessage(), "Exception message should be preserved");
        verifyNoInteractions(mockDir);
    }

    /**
     * Interaction with dependency: implementation can use directory's methods to make decisions.
     * Tests a filter that uses directory path information.
     */
    @Test
    @DisplayName("filter can use SmbFile directory for decision logic")