A middleware doesn't have to be made for FastAPI or Starlette to work, as long as it follows the ASGI spec.

In general, ASGI middlewares are classes that expect to receive an ASGI app as the first argument.

So, in the documentation for third-party ASGI middlewares they will probably tell you to do something like:

```Python
from unicorn import UnicornMiddleware

app = SomeASGIApp()

def test_response_dependency_chain():
    """Response dependency should work in a chain of dependencies."""
    app = FastAPI()

    def first_modifier(response: Response) -> Response:
        response.headers["X-First"] = "1"
        return response

    def second_modifier(
        response: Annotated[Response, Depends(first_modifier)],
    ) -> Response:
        response.headers["X-Second"] = "2"
        return response

          close-issue-reason: completed
          # List of labels to remove when issues/PRs unstale. 
          labels-to-remove-when-unstale: "stat:contribution welcome,stat:good first issue"
          any-of-labels: "stat:contribution welcome,stat:good first issue"
          stale-issue-message: > 
            This issue is stale because it has been open for 180 days with no activity.

        request.setPrefixMatchWeight(prefixMatchWeight);
        return this;
    }

    /**
     * Sets whether to match the first word.
     * @param matchWordFirst True to match the first word, false otherwise.
     * @return This builder instance.
     */
    public SuggestRequestBuilder setMatchWordFirst(final boolean matchWordFirst) {

        String input = "first\nsecond\nthird";
        InputStream is = new ByteArrayInputStream(input.getBytes(StandardCharsets.UTF_8));

        InputStreamThread thread = new InputStreamThread(is, StandardCharsets.UTF_8, 10, null);
        thread.start();
        thread.join(1000);

        String output = thread.getOutput();
        assertEquals("first\nsecond\nthird\n", output);
    }

    @Test

        // Mock close success for the first call
        doAnswer(invocation -> {
            MsrpcSamrCloseHandle rpc = invocation.getArgument(0);
            rpc.retval = 0;
            return null;
        }).when(mockDcerpcHandle).sendrecv(any(MsrpcSamrCloseHandle.class));

        // First close call
        aliasHandle.close();

        // Act: Call close again

# /---------------------------------------------------------------------------
# sourceCopyright: (NotRequired - Default '')
#
# The copyright for all class sources.
# This property is NOT map style.
# You should specify before your first generating.
#
#/*
# * Copyright(c) DBFlute TestCo.,TestLtd. All Rights Reserved.
# */

   * Returns an immutable multimap containing the specified entries. The returned multimap iterates
   * over keys in the order they were first encountered in the input, and the values for each key
   * are iterated in the order they were encountered. If two values for the same key are {@linkplain
   * Object#equals equal}, the first value encountered is used.
   *
   * @throws NullPointerException if any key, value, or entry is null
   * @since 19.0
   */

   *
   * <p><b>Note:</b> this method is now unnecessary and should be treated as deprecated; use the
   * equivalent {@link Character#compare} method instead.
   *
   * @param a the first {@code char} to compare
   * @param b the second {@code char} to compare
   * @return a negative value if {@code a} is less than {@code b}; a positive value if {@code a} is
   *     greater than {@code b}; or zero if they are equal

     * This class is designed to be used statically.
     */
    protected ResourceUtil() {
        // nothing
    }

    /**
     * Gets the HTTP URL for the OpenSearch (Fesen) server.
     * First checks for a system-configured search engine address,
     * then falls back to the URL configured in FessConfig.
     *
     * @return the HTTP URL for the OpenSearch server
     */