from collections.abc import Generator
from contextlib import contextmanager
from typing import Annotated, Any

import pytest
from fastapi import Depends, FastAPI, WebSocket
from fastapi.testclient import TestClient


class Session:
    def __init__(self) -> None:
        self.data = ["foo", "bar", "baz"]
        self.open = True

    def __iter__(self) -> Generator[str, None, None]:
        for item in self.data:

Two links here: <a href="https://fastapi.tiangolo.com/how-to/">How to</a> and <a href="project-generation.md" class="internal-link" target="_blank">Project Generators</a>.

### Header 3 { #header-3 }

Another link: <a href="project-generation.md" class="internal-link" target="_blank" title="Link title">**FastAPI** Project Generators</a> with title.

# Header 4 { #header-4 }

Link to anchor: <a href="#header-2">Header 2</a>

public final class QueueTestSuiteBuilder<E>
    extends AbstractCollectionTestSuiteBuilder<QueueTestSuiteBuilder<E>, E> {
  public static <E> QueueTestSuiteBuilder<E> using(TestQueueGenerator<E> generator) {
    return new QueueTestSuiteBuilder<E>().usingGenerator(generator);
  }

  private boolean runCollectionTests = true;

  /**
   * Specify whether to skip the general collection tests. Call this method when testing a

    assert state.app_shutdown is True


def test_router_sync_generator_lifespan(state: State) -> None:
    """Test that a sync generator lifespan works via _wrap_gen_lifespan_context."""
    from collections.abc import Generator

    def lifespan(app: FastAPI) -> Generator[None, None, None]:
        state.app_startup = True
        yield
        state.app_shutdown = True

    extends AbstractCollectionTestSuiteBuilder<CollectionTestSuiteBuilder<E>, E> {
  public static <E> CollectionTestSuiteBuilder<E> using(TestCollectionGenerator<E> generator) {
    return new CollectionTestSuiteBuilder<E>().usingGenerator(generator);
  }

  @Override
  protected List<TestSuite> createDerivedSuites(
      FeatureSpecificTestSuiteBuilder<?, ? extends OneSizeTestContainerGenerator<Collection<E>, E>>

      generator.addSampleInstances((Class) entry.getKey(), entry.getValue());
    }
    return generator;
  }

  private static @Nullable Object generateDummyArg(Parameter param, FreshValueGenerator generator)
      throws ParameterNotInstantiableException {
    if (isNullable(param)) {
      return null;
    }
    Object arg = generator.generateFresh(param.getType());

  public static <K, V> SortedSetMultimapTestSuiteBuilder<K, V> using(
      TestSetMultimapGenerator<K, V> generator) {
    SortedSetMultimapTestSuiteBuilder<K, V> result = new SortedSetMultimapTestSuiteBuilder<>();
    result.usingGenerator(generator);
    return result;
  }

  @SuppressWarnings("rawtypes") // class literals
  @Override

    extends AbstractCollectionTestSuiteBuilder<CollectionTestSuiteBuilder<E>, E> {
  public static <E> CollectionTestSuiteBuilder<E> using(TestCollectionGenerator<E> generator) {
    return new CollectionTestSuiteBuilder<E>().usingGenerator(generator);
  }

  @Override
  protected List<TestSuite> createDerivedSuites(
      FeatureSpecificTestSuiteBuilder<?, ? extends OneSizeTestContainerGenerator<Collection<E>, E>>

from functools import partial
from typing import Annotated

import pytest
from fastapi import Depends, FastAPI
from fastapi.testclient import TestClient

app = FastAPI()


def function_dependency(value: str) -> str:
    return value


async def async_function_dependency(value: str) -> str:
    return value


def gen_dependency(value: str) -> Generator[str, None, None]:

Por ejemplo:

{* ../../docs_src/behind_a_proxy/tutorial003_py310.py hl[4:7] *}

Generará un esquema de OpenAPI como:

```JSON hl_lines="5-7"
{
    "openapi": "3.1.0",
    // Más cosas aquí
    "servers": [
        {
            "url": "/api/v1"
        },
        {