```Python hl_lines="3"
{!../../docs_src/app_testing/test_main.py!}
```

...and have the code for the tests just like before.

## Testing: extended example

Now let's extend this example and add more details to see how to test different parts.

### Extended **FastAPI** app file

Let's continue with the same file structure as before:

```
.
├── app
│   ├── __init__.py

 * can't get by with the standard implementations, prefer to derive a new {@code Future} instance
 * with the methods in {@link Futures} or, if necessary, to extend {@link AbstractFuture}.
 *
 * <p>Occasionally, an API will return a plain {@code Future} and it will be impossible to change
 * the return type. For this case, we provide a more expensive workaround in {@code

# `VERSION` parameter.
# Note: 'Templatizing' this and the other conditional branches would require
# defining several variables (version, os, path) making it difficult to maintain
# and extend for future modifications.
case "${VERSION}" in
devtoolset-7)
  # Download binary glibc 2.12 shared library release.
  wget "http://old-releases.ubuntu.com/ubuntu/pool/main/e/eglibc/libc6_2.12.1-0ubuntu6_amd64.deb" && \

yInterface.call(g(t).not(this._selector),"hide"),e||g(t).data(dt,null));var o=this._getDimension();g(this._element).removeClass(Et).addClass(Ct),this._element.style[o]=0,this._triggerArray.length&&g(this._triggerArray).removeClass(Tt).attr("aria-expanded",!0),this.setTransitioning(!0);var r="scroll"+(o[0].toUpperCase()+o.slice(1)),s=_.getTransitionDurationFromElement(this._element);g(this._element).one(_.TRANSITION_END,function(){g(n._element).removeClass(Ct).addClass(Et).addClass(yt),n._element...

 * constructed instance. To create session out of builder, use {@link SessionBuilder#build()}. For proper closing
 * of sessions, use {@link CloseableSession#close()} method on built instance(s).
 * <p>
 * Extend this class and override methods to customize, if needed.
 *
 * @since 4.0.0
 * @deprecated since 4.0.0, use {@code maven-api-impl} jar instead
 */
@Deprecated(since = "4.0.0")

# with the GNU style, we need to set GNU utilities to be default on Mac.
if [[ -n "$(which grealpath)" ]] &&  [[ -n "$(which gstat)" ]]; then
  alias realpath=grealpath
  alias stat=gstat
  # By default, aliases are only expanded in interactive shells, which means
  # that they are not substituted for their corresponding commands in shell
  # scripts. By setting "expand_aliases", we enable alias expansion in
  # non-interactive shells as well.

	VPAND X11, X9, X11                      // c44131dbdb
	VPAND (BX), Y15, Y2                     // c4e105db13 or c585db13
	VPAND (R11), Y15, Y2                    // c4c105db13
	VPAND Y2, Y15, Y2                       // c4e105dbd2 or c585dbd2
	VPAND Y11, Y15, Y2                      // c4c105dbd3
	VPAND (BX), Y15, Y11                    // c46105db1b or c505db1b

* Metadata Agent Improvements ([#66485](https://github.com/kubernetes/kubernetes/pull/66485), [@bmoyles0117](https://github.com/bmoyles0117))
    * Bump metadata agent version to 0.2-0.0.21-1.
    * Expand the metadata agent's access to all API groups.
    * Remove metadata agent config maps in favor of command line flags.
    * Update the metadata agent's liveness probe to a new /healthz handler.
    * Logging Agent Improvements

import jcifs.smb.NtlmPasswordAuthentication;
import jcifs.smb.SmbAuthException;


/**
 * This servlet may be used with pre-2.3 servlet containers
 * to protect content with NTLM HTTP Authentication. Servlets that
 * extend this abstract base class may be authenticated against an SMB
 * server or domain controller depending on how the
 * <tt>jcifs.smb.client.domain</tt> or <tt>jcifs.http.domainController</tt>

    checkCanCreate();

    logger.fine(" Testing: " + name);
    logger.fine("Features: " + formatFeatureSet(features));

    addImpliedFeatures(features);

    logger.fine("Expanded: " + formatFeatureSet(features));

    @SuppressWarnings("rawtypes") // class literals
    List<Class<? extends AbstractTester>> testers = getTesters();

    TestSuite suite = new TestSuite(name);