FilenameFilter filter = new PatternFilenameFilter("a+");
    assertTrue(filter.accept(dir, "a"));
    assertTrue(filter.accept(dir, "aaaa"));
    assertFalse(filter.accept(dir, "b"));

    // Show that dir is ignored
    assertTrue(filter.accept(null, "a"));
  }

  public void testNulls() throws Exception {
    NullPointerTester tester = new NullPointerTester();

# Does it send mock mail? (true: no send actually, logging only)
mail.send.mock = false

# SMTP server settings for main: host:port
mail.smtp.server.main.host.and.port = localhost:25

# The prefix of subject to show test environment or not
mail.subject.test.prefix = 

# The common return path of all mail
mail.return.path = root@localhost


# ========================================================================================

    //                                                                             Execute
    //                                                                             =======
    /**
     * Show the index page.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index() {
        saveToken();

Here's how it might look:

<img src="/img/tutorial/debugging/image01.png">

---

If you use Pycharm, you can:

* Open the "Run" menu.
* Select the option "Debug...".
* Then a context menu shows up.
* Select the file to debug (in this case, `main.py`).

It will then start the server with your **FastAPI** code, stop at your breakpoints, etc.

Here's how it might look:

    //                                                                              Index
    //                                                                      ==============
    /**
     * Show the index page.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse index() {
        searchEngineApiManager.saveToken();

    // ----------------------------------------------------------------------
    //
    // p1 inherits from p0
    // p0 inherits from super model
    //
    // or we can show it graphically as:
    //
    // p1 ---> p0 --> super model
    //
    // ----------------------------------------------------------------------

    @Test
    void testDependencyManagement() throws Exception {

    // ----------------------------------------------------------------------
    //
    // p1 inherits from p0
    // p0 inherits from super model
    //
    // or we can show it graphically as:
    //
    // p1 ---> p0 --> super model
    //
    // ----------------------------------------------------------------------

    @Test

	position: fixed;
	top: 0;
	bottom: 0;
	right: -500px;
	padding-top: 72px;
	padding-bottom: 20px;
	color: #fff;
	background-color: rgba(60, 60, 60, 0.93);
	transition: all .4s ease 0s;
}

#searchOptions.show .container {
	right: 0;
}

/* index */

.mainLogo {
	margin-bottom: 1em;
}

.searchFormBox {
	margin-top: 8em;
	margin-bottom: 4em;
}

.notification {
	font-size: 1.2em;

    // ----------------------------------------------------------------------
    //
    // p1 inherits from p0
    // p0 inherits from super model
    //
    // or we can show it graphically as:
    //
    // p1 ---> p0 --> super model
    //
    // ----------------------------------------------------------------------

    @Test
    void testDependencyManagement() throws Exception {

        assertNull(ex.getMessage(), "Default constructor should have null message");
        assertNull(ex.getCause(), "Default constructor should have null cause");

        // Assert - toString shows class name when message is null
        assertEquals(SMBProtocolDowngradeException.class.getName(), ex.toString());

        // Assert - type hierarchy: subclass of CIFSException and IOException