def test_fastapi_error(mod: ModuleType):
    client = TestClient(mod.app)
    with pytest.raises(FastAPIError) as exc_info:
        client.get("/items/portal-gun")
    assert "raising an exception and a dependency with yield" in exc_info.value.args[0]


def test_internal_server_error(mod: ModuleType):
    client = TestClient(mod.app, raise_server_exceptions=False)
    response = client.get("/items/portal-gun")

        b.addDependency("a", "1.0");
        assertThrows(
                CyclicDependencyException.class,
                () -> collect(a),
                "Should have failed on cyclic dependency not involving project");
    }

    @Test
    @Disabled("works, but we don't fail on cycles presently")
    void testCircularDependencyIncludingCurrentProject()

yapılabileceklere nispeten benzeyen bir şey elde ediyor.

Angular 2'den ilham alan, içine gömülü bir <abbr title="Bağımlılık enjeksiyonu: Dependency Injection">bağımlılık enjeksiyonu</abbr> sistemi var. Bildiğim diğer tüm bağımlılık enjeksiyonu sistemlerinde olduğu gibi"<abbr title="Injectable: dependency injection sistemi tarafından enjekte edilecek dependency (bağımlılık)">bağımlılık</abbr>"ları önceden kaydetmenizi gerektiriyor. Böylece projeyi daha detaylı hale getiriyor ve kod tekrarını da arttırıyor....

We see that we are going to need some dependencies used in several places of the application.

So we put them in their own `dependencies` module (`app/dependencies.py`).

We will now use a simple dependency to read a custom `X-Token` header:

{* ../../docs_src/bigger_applications/app_an_py39/dependencies.py hl[3,6:8] title["app/dependencies.py"] *}

/// tip

We are using an invented header to simplify this example.

  xsi:schemaLocation="http://maven.apache.org/METADATA/1.1.0 http://maven.apache.org/xsd/metadata-1.1.0.xsd">
  <groupId>ut.simple</groupId>
  <artifactId>dependency</artifactId>
  <versioning>
    <latest>1.0</latest>
    <release>1.0</release>
    <versions>
      <version>1.0</version>
    </versions>
    <lastUpdated>20111123122038</lastUpdated>
  </versioning>

        if (result.hasMetadataResolutionExceptions()) {
            throw result.getMetadataResolutionException(0);
        }

        // Metadata cannot be retrieved

        // Cyclic Dependency Error

        if (result.hasCircularDependencyExceptions()) {
            throw result.getCircularDependencyException(0);
        }

        // Version Range Violation

 * assist those clients that employ the repository system outside of an IoC container, Maven plugins should instead
 * always use regular dependency injection to acquire the repository system.
 *
 * @deprecated See {@link MavenSessionBuilderSupplier}
 */
@Deprecated
public final class MavenRepositorySystemUtils {

    private MavenRepositorySystemUtils() {

            }

            target.setReportSets(new ArrayList<>(merged.values()));
        }
    }

    @Override
    protected Object getDependencyKey(Dependency dependency) {
        return dependency.getManagementKey();
    }

    @Override
    protected Object getPluginKey(Plugin plugin) {
        return plugin.getKey();
    }

    @Override

Para sobrepor a dependência para os testes, você coloca como chave a dependência original (a função), e como valor, a sua sobreposição da dependência (outra função).

E então o **FastAPI** chamará a sobreposição no lugar da dependência original.

{* ../../docs_src/dependency_testing/tutorial001_an_py310.py hl[26:27,30] *}

/// tip | Dica

_2020-07-11_

 *  New: Change `HeldCertificate.Builder` to use its own ASN.1 certificate encoder. This is part
    of our effort to remove the okhttp-tls module's dependency on Bouncy Castle. We think Bouncy
    Castle is great! But it's a large dependency (6.5 MiB) and its security provider feature
    impacts VM-wide behavior.

 *  New: Reduce contention for applications that make a very high number of concurrent requests.