| <<<javadoc>>>         | <<<javadoc>>> | <<<jar>>>  | java      | classes               |                       |
*-----------------------+---------------+------------+-----------+-----------------------+-----------------------+
| <<<test-jar>>>        | <<<tests>>>   | <<<jar>>>  | java      | classes, patch module |                       |

            failureCause());
      }
      throw new IllegalStateException(
          "Expected the service " + this + " to be " + expected + ", but was " + actual);
    }
  }

  /**
   * Implementing classes should invoke this method once their service has started. It will cause
   * the service to transition from {@link State#STARTING} to {@link State#RUNNING}.
   *

You can override these exception handlers with your own.

### Override request validation exceptions

When a request contains invalid data, **FastAPI** internally raises a `RequestValidationError`.

And it also includes a default exception handler for it.

  // final fields.
  //
  // For simplicity the rest of this description will discuss Futures.catching since it is the
  // simplest instance, though very similar descriptions apply to many other classes in this file.
  //
  // In the constructor of AbstractCatchingFuture, the delegate future is assigned to a field
  // 'inputFuture'. That field is non-final and non-volatile. There are 2 places where the

    client = TestClient(app)
    with pytest.raises(WebSocketDisconnect):
        with client.websocket_connect("/items/foo/ws"):
            pytest.fail(
                "did not raise WebSocketDisconnect on __enter__"
            )  # pragma: no cover


def test_websocket_invalid_data():
    client = TestClient(app)
    with pytest.raises(WebSocketDisconnect):

    client = TestClient(app)
    with pytest.raises(WebSocketDisconnect):
        with client.websocket_connect("/items/foo/ws"):
            pytest.fail(
                "did not raise WebSocketDisconnect on __enter__"
            )  # pragma: no cover


@needs_py310
def test_websocket_invalid_data(app: FastAPI):
    client = TestClient(app)
    with pytest.raises(WebSocketDisconnect):

            val content = parameters.repoRoot.file("test-splits/include-test-classes.properties").get().asFile.readText()
            println("Tests to be included:\n$content")
            IncludeTestClassProvider(readTestClasses(content))
        }
        parameters.excludeTestClasses.get().isNotBlank() -> {
            val content = parameters.repoRoot.file("test-splits/exclude-test-classes.properties").get().asFile.readText()

			<outputDirectory>fess-${project.version}/lib/classes</outputDirectory>
		</fileSet>
		<fileSet>
			<directory>${project.build.directory}/fess/WEB-INF/classes/org/codelibs/fess/</directory>
			<includes>
				<include>FessBoot**</include>
				<include>tomcat/**</include>
			</includes>
			<outputDirectory>fess-${project.version}/lib/classes/org/codelibs/fess</outputDirectory>
		</fileSet>
		<fileSet>

    // Since the last element of the heap is from the bottom level, we
    // optimistically fill index position with elements from lower levels,
    // moving the hole down. In most cases this reduces the number of
    // comparisons with toTrickle, but in some cases we will need to bubble it
    // all the way up again.
    int vacated = heap.fillHoleAt(index);
    // Try to see if toTrickle can be bubbled up min levels.

```

////

/// info

`File` is a class that inherits directly from `Form`.

But remember that when you import `Query`, `Path`, `File` and others from `fastapi`, those are actually functions that return special classes.

///

/// tip

To declare File bodies, you need to use `File`, because otherwise the parameters would be interpreted as query parameters or body (JSON) parameters.

///