When you need `lifespan` to run in your tests, you can use the `TestClient` with a `with` statement:

{* ../../docs_src/app_testing/tutorial004_py310.py hl[9:15,18,27:28,30:32,41:43] *}


You can read more details about the ["Running lifespan in tests in the official Starlette documentation site."](https://www.starlette.dev/lifespan/#running-lifespan-in-tests)

You can also use it directly to create an instance of it and return it from your *path operations*.

Read more about it in the [FastAPI docs about returning a custom Response](https://fastapi.tiangolo.com/advanced/response-directly/#returning-a-custom-response)

You can import it directly from `fastapi`:

```python

                    "description": "Production environment",
                },
            ],
            "paths": {
                "/app": {
                    "get": {
                        "summary": "Read Main",
                        "operationId": "read_main_app_get",
                        "responses": {
                            "200": {
                                "description": "Successful Response",

 - CallStart
 - **CacheHit**
 - CallEnd

### Cache Miss

Under a cache miss the normal request events are seen but an additional event shows the presence of the cache.
Cache Miss will be typical if the item has not been read from the network, is uncacheable, or is past it's
lifetime based on Response cache headers.

 - CallStart
 - **CacheMiss**
 - ProxySelectStart
 - ... Standard Events ...
 - CallEnd

### Conditional Cache Hit

 * limitations under the License.
 */
package okhttp3

import okio.IOException

/**
 * Returns the trailers that follow an HTTP response, blocking if they aren't ready yet.
 * Implementations of this interface should respond to [Call.cancel] by immediately throwing an
 * [IOException].
 *
 * Most callers won't need this interface, and should use [Response.trailers] instead.
 *

    MINIO_COMPRESSION_MIME_TYPES: "*"
    MINIO_COMPRESSION_ALLOW_ENCRYPTION: "on"
    MINIO_KMS_SECRET_KEY: "my-minio-key:OSMM+vkKUTCvQs9YL/CVMIMt43HFhkUpqJxTmGl6rYw="
  healthcheck:
    test: ["CMD", "mc", "ready", "local"]
    interval: 5s
    timeout: 5s
    retries: 5

# starts 4 docker containers running minio server instances.
# using nginx reverse proxy, load balancing, you can access
# it through port 9000.
services:

    MINIO_ROOT_USER: "minio"
    MINIO_ROOT_PASSWORD: "minio123"
    MINIO_KMS_SECRET_KEY: "my-minio-key:OSMM+vkKUTCvQs9YL/CVMIMt43HFhkUpqJxTmGl6rYw="
    MINIO_DRIVE_MAX_TIMEOUT: "5s"
  healthcheck:
    test: ["CMD", "mc", "ready", "local"]
    interval: 5s
    timeout: 5s
    retries: 5

# starts 4 docker containers running minio server instances.
# using nginx reverse proxy, load balancing, you can access
# it through port 9000.
services:

# Count should match the initial count of 10
if [ "${OBJ_COUNT_AFTER_STOP}" -ne 10 ]; then
	echo "Expected 10 objects; received ${OBJ_COUNT_AFTER_STOP}"
	exit 1
fi

./mc ready "${ALIAS_NAME}" --json

OUT=$(./mc cp --quiet "${SRC_DIR}"/* "${ALIAS_NAME}"/"${BUCKET}"/new-data/)
RET=${?}
if [ ${RET} -ne 0 ]; then
	echo "Error copying objects to new prefix: ${OUT}"
	exit 1
fi

          required: true
        - label: >
            I have read and understood the [contribution
            guidelines](https://github.com/google/guava/wiki/HowToContribute#feature-requests).
          required: true
        - label: >
            I have read and understood
            [Guava's philosophy](https://github.com/google/guava/wiki/PhilosophyExplained), and

        // File Size: 1024 bytes
        ServerMessageBlock.writeInt4(1024, buffer, 6);

        response.wordCount = 10; // Must be non-zero to read
        int bytesRead = response.readParameterWordsWireFormat(buffer, 0);

        // Should read 20 bytes as per implementation
        assertEquals(20, bytesRead);
        assertEquals(0x0010, response.getAttributes());