* ReDoc.

---

Voltando ao código do exemplo anterior, **FastAPI** irá:

* Validar que existe um `item_id` na rota para requisições `GET` e `PUT`.
* Validar que `item_id` é do tipo `int` para requisições `GET` e `PUT`.
    * Se não é validado, o cliente verá um útil, claro erro.
* Verificar se existe um parâmetro de _query_ opcional nomeado como `q` (como em `http://127.0.0.1:8000/items/foo?q=somequery`) para requisições `GET`.

            }
        }

        final int expectSeq = this.verifySequence.getAndIncrement();
        if (expectSeq != seq) {
            throw new CIFSException(String.format("Invalid MIC sequence, expect %d have %d", expectSeq, seq));
        }

        final byte[] verify = new byte[8];
        System.arraycopy(mic, 4, verify, 0, 8);
        if (!MessageDigest.isEqual(trunc, verify)) {

Nesse caso, o caminho original `/app` seria servido em `/api/v1/app`.

Embora todo o seu código esteja escrito assumindo que existe apenas `/app`.

{* ../../docs_src/behind_a_proxy/tutorial001.py hl[6] *}

			name:         newtierfi.Name,
			inclFreeVers: true,
			expectedFree: true,
		},
		// ToFileInfo with 'inclFreeVers = false' must return errFileNotFound
		// when no non-free version exist.
		{
			vol:          newtierfi.Volume,
			name:         newtierfi.Name,
			inclFreeVers: false,
			expectedErr:  errFileNotFound,
		},
	}

	for _, ft := range freeVersionsTests {

                if (log.isDebugEnabled()) {
                    log.debug("signature verification failure"); //$NON-NLS-1$
                    log.debug("Expect: " + Hexdump.toHexString(signature, 0, 8));
                    log.debug("Have: " + Hexdump.toHexString(data, offset + SmbConstants.SIGNATURE_OFFSET, 8));
                }
                return true;
            }

            int exp = size();
            int actual = getLength();
            if (exp != actual) {
                throw new IllegalStateException(String.format("Wrong size calculation have %d expect %d", exp, actual));
            }

            return calculatedLength;
        }

        private void setLength(int length) {
            try {

      }
    }
  }

  // Relies on the correctness of isPowerOfTwo(int).
  public void testLog2Exact() {
    for (int x : POSITIVE_INTEGER_CANDIDATES) {
      // We only expect an exception if x was not a power of 2.
      boolean isPowerOf2 = IntMath.isPowerOfTwo(x);
      try {
        assertEquals(x, 1 << IntMath.log2(x, UNNECESSARY));
        assertTrue(isPowerOf2);

In many cases you might already know the answer for those questions. 🤓

If you are helping a lot of people with their questions, you will become an official [FastAPI Expert](fastapi-people.md#fastapi-experts){.internal-link target=_blank}. 🎉

        // Verify totalentries is initialized
        assertNotNull(dfsRootEnum.totalentries);
    }

    @Test
    @DisplayName("getEntries should return empty array when no DFS roots exist")
    void testGetEntries_emptyArray() throws Exception {
        // Create empty DfsEnumArray200
        netdfs.DfsEnumArray200 emptyArray = new netdfs.DfsEnumArray200();
        emptyArray.count = 0;

# Alternatives, Inspiration and Comparisons { #alternatives-inspiration-and-comparisons }

What inspired **FastAPI**, how it compares to alternatives and what it learned from them.

## Intro { #intro }

**FastAPI** wouldn't exist if not for the previous work of others.

There have been many tools created before that have helped inspire its creation.