You don't want the original dependency to run (nor any of the sub-dependencies it might have).

Instead, you want to provide a different dependency that will be used only during tests (possibly only some specific tests), and will provide a value that can be used where the value of the original dependency was used.

### Use cases: external service { #use-cases-external-service }

{* ../../docs_src/dataclasses_/tutorial001_py310.py hl[1,6:11,18:19] *}

これは **Pydantic** によって引き続きサポートされています。Pydantic には [`dataclasses` の内部サポート](https://docs.pydantic.dev/latest/concepts/dataclasses/#use-of-stdlib-dataclasses-with-basemodel) があるためです。

そのため、上記のように明示的に Pydantic を使っていないコードでも、FastAPI は標準の dataclass を Pydantic 独自の dataclass に変換するために Pydantic を使用しています。

そして当然ながら、次の点も同様にサポートされます:

        triggerName = "ReadyforNightly",
    ) {
    init {
        id(NIGHTLY_SNAPSHOT_BUILD_ID)
        name = "Nightly Snapshot"
        description =
            "Promotes the latest successful changes on '${branch.branchName}' from Ready for Nightly as a new nightly snapshot"

        triggers {
            val triggerHour = branch.determineNightlyPromotionTriggerHour() ?: return@triggers

]

[project.scripts]
fastapi = "fastapi.cli:main"

[dependency-groups]
dev = [
    { include-group = "tests" },
    { include-group = "docs" },
    { include-group = "translations" },
    "playwright >=1.57.0",
    "prek >=0.2.22",
]
docs = [
    { include-group = "docs-tests" },
    "black >=25.1.0",
    "cairosvg >=2.8.2",
    # for MkDocs live reload
    "click==8.2.1",

echo ""
echo "--- get_imagemagick_cmd function tests ---"

# Test that ImageMagick is available (either convert or magick)
if command -v magick >/dev/null 2>&1 || command -v convert >/dev/null 2>&1; then
    echo -e "ImageMagick available: ${GREEN}YES${NC}"

    echo ""
    echo "--- Image thumbnail tests (requires ImageMagick) ---"

    # Test: PNG thumbnail generation

		if getRequestAuthType(r) == authTypeAnonymous {
			// As per "Permission" section in
			// https://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectGET.html
			// If the object you request does not exist,
			// the error Amazon S3 returns depends on
			// whether you also have the s3:ListBucket
			// permission.

### 額外可選依賴套件 { #additional-optional-dependencies }

有些額外依賴你可能也會想安裝。

Pydantic 的額外可選依賴：

* [`pydantic-settings`](https://docs.pydantic.dev/latest/usage/pydantic_settings/) - 設定管理。
* [`pydantic-extra-types`](https://docs.pydantic.dev/latest/usage/types/extra_types/extra_types/) - 與 Pydantic 一起使用的額外型別。

FastAPI 的額外可選依賴：

* [`orjson`](https://github.com/ijl/orjson) - 若要使用 `ORJSONResponse` 必須安裝。

Yüklemek isteyebileceğiniz bazı ek bağımlılıklar da vardır.

Ek opsiyonel Pydantic bağımlılıkları:

* [`pydantic-settings`](https://docs.pydantic.dev/latest/usage/pydantic_settings/) - ayar yönetimi için.
* [`pydantic-extra-types`](https://docs.pydantic.dev/latest/usage/types/extra_types/extra_types/) - Pydantic ile kullanılacak ek type'lar için.

Ek opsiyonel FastAPI bağımlılıkları:

          "name": "TestDistribution"
        }
      },
      {
        "subprojects": [
          "execution-e2e-tests",
          "file-collections",
          "ide",
          "ide-plugins",
          "kotlin-dsl-integ-tests",
          "platform-native",
          "version-control"
        ],
        "parallelizationMethod": {
          "name": "TestDistribution"

        description = "Run all flaky tests skipped multiple times"

        applyDefaultSettings(os = os, arch = arch, buildJvm = BuildToolBuildJvm, timeout = 60)

        if (os == Os.LINUX) {
            steps {
                script {
                    // Because we exclude tests in `distributions-integ-tests` below, `@Flaky` won't work in that subproject.