## Using `TestClient` { #using-testclient }

/// info

To use `TestClient`, first install [`httpx`](https://www.python-httpx.org).

Make sure you create a [virtual environment](../virtual-environments.md), activate it, and then install it, for example:

```console
$ pip install httpx
```

///

Import `TestClient`.

Create a `TestClient` by passing your **FastAPI** application to it.

                };
        ((ch.qos.logback.classic.Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME)).setLevel(value);
    }

    @Override
    public void activate() {
        // no op
    }

                            + "' - ignoring system property and get log level from -X/-e/-q options, log level will be set to "
                            + value);
        }
    }

    @Override
    public void activate() {
        ILoggerFactory lf = LoggerFactory.getILoggerFactory();
        if (lf instanceof MavenLoggerFactory mlf) {
            mlf.reconfigure();
        }
    }

/// info

To receive uploaded files and/or form data, first install [`python-multipart`](https://github.com/Kludex/python-multipart).

Make sure you create a [virtual environment](../virtual-environments.md), activate it, and then install it, for example:

```console
$ pip install python-multipart
```

///

## Import `File` and `Form` { #import-file-and-form }

    bus.post(EVENT);

    List<String> events = catcher.getEvents();
    assertTrue("No events should be delivered synchronously.", events.isEmpty());

    // Now we find the task in our Executor and explicitly activate it.
    List<Runnable> tasks = executor.getTasks();
    assertEquals("One event dispatch task should be queued.", 1, tasks.size());

    tasks.get(0).run();

<div class="termy">

```console
$ cd ~/code/prisoner-of-azkaban

// You don't need to be in the old directory to deactivate, you can do it wherever you are, even after going to the other project 😎
$ deactivate

// Activate the virtual environment in prisoner-of-azkaban/.venv 🚀
$ source .venv/bin/activate

// Now when you run python, it will find the package sirius installed in this virtual environment ✨
$ python main.py

            boolean reverseName = false;

            if (name == null) {
                throw new ProfileActivationException(
                        "The property name is required to activate the profile '" + profile.getId() + "'");
            }

            if (name.startsWith("!")) {
                reverseName = true;
                name = name.substring(1);
            }

     * Gets the identifiers of those profiles that should be activated by explicit demand.
     *
     * @return The identifiers of those profiles to activate, never {@code null}.
     */
    List<String> getActiveProfileIds();

    /**
     * Gets the identifiers of those profiles that should be deactivated by explicit demand.
     *
     * @return The identifiers of those profiles to deactivate, never {@code null}.
     */

     */
    @Nonnull
    Optional<Boolean> updateSnapshots();

    /**
     * Returns the list of profiles to activate.
     *
     * @return an {@link Optional} containing the list of profile names to activate, or empty if not specified
     */
    @Nonnull
    Optional<List<String>> activatedProfiles();

    /**
     * Indicates whether Maven should suppress SNAPSHOT updates.

/// info

To use forms, first install [`python-multipart`](https://github.com/Kludex/python-multipart).

Make sure you create a [virtual environment](../virtual-environments.md), activate it, and then install it, for example:

```console
$ pip install python-multipart
```

///

/// note

This is supported since FastAPI version `0.113.0`. 🤓

///