## Die Dokumentation testen { #check-the-docs }

Sie können die erforderlichen Header in der Dokumentationsoberfläche unter `/docs` sehen:

<div class="screenshot">
<img src="/img/tutorial/header-param-models/image01.png">
</div>

            assertEquals(specialMessage, exception.getMessage());
        });
    }

    @Test
    @DisplayName("Should handle different cause types")
    void testVariousCauseTypes() {
        // Test with checked exception
        Exception checkedException = new java.io.IOException("IO Error");
        assertDoesNotThrow(() -> {
            RuntimeCIFSException exception = new RuntimeCIFSException(checkedException);

        assertNotNull(entries, "The returned entries array should not be null.");
        assertEquals(2, entries.length, "The number of entries should be correct.");

        // The getEntries method returns FileEntry objects. We can check their names.
        assertEquals("\\domain\share1", entries[0].getName(), "The name of the first share should be correct.");

  // original character value.
  @VisibleForTesting
  static char[][] createReplacementArray(Map<Character, String> map) {
    checkNotNull(map); // GWT specific check (do not optimize)
    if (map.isEmpty()) {
      return EMPTY_REPLACEMENT_ARRAY;
    }
    char max = max(map.keySet());
    char[][] replacements = new char[max + 1][];
    for (Character c : map.keySet()) {

В этом случае оно будет смонтировано по пути `/subapi`:

{* ../../docs_src/sub_applications/tutorial001_py39.py hl[11, 19] *}

### Проверьте автоматическую документацию API { #check-the-automatic-api-docs }

Теперь запустите команду `fastapi` с вашим файлом:

<div class="termy">

```console
$ fastapi dev main.py

    * The generated schema will specify that it's a `str` with `binary` "format".
* `Decimal`:
    * Standard Python `Decimal`.
    * In requests and responses, handled the same as a `float`.
* You can check all the valid Pydantic data types here: <a href="https://docs.pydantic.dev/latest/usage/types/types/" class="external-link" target="_blank">Pydantic data types</a>.

## Example { #example }

        return toByteArray(this);
    }

    /**
     * Checks whether the SID is empty (no sub-authorities).
     *
     * @return whether the SID is empty (no sub-authorities)
     */
    public boolean isEmpty() {
        return this.sub_authority_count == 0;
    }

    /**
     * Checks whether the SID is blank (all sub-authorities zero).
     *

* «/// check»: «/// check | Testen»
* «/// danger»: «/// danger | Gefahr»
* «/// info»: «/// info | Info»
* «/// note | Technical Details»: «/// note | Technische Details»
* «/// note»: «/// note | Hinweis»
* «/// tip»: «/// tip | Tipp»

    fun Response.hasVaryAll(): Boolean = "*" in headers.varyFields()

    /**
     * Returns the names of the request headers that need to be checked for equality when caching.
     */
    private fun Headers.varyFields(): Set<String> {
      var result: MutableSet<String>? = null
      for (i in 0 until size) {

/// tip

Notice that you are not passing the router itself (`invoices_callback_router`) to `callback=`, but the attribute `.routes`, as in `invoices_callback_router.routes`.

///

### Check the docs { #check-the-docs }

Now you can start your app and go to <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.