chunk = max(1, min(chunk, input.length()));
      assertEquals(expectProcess, bufferHelper(input, chunk));
      assertEquals(expectRead, readUsingJava(input, chunk));
      assertEquals(expectRead, readUsingReader(input, chunk, true));
      assertEquals(expectRead, readUsingReader(input, chunk, false));
    }
  }

  private static List<String> bufferHelper(String input, int chunk) throws IOException {

      chunk = max(1, min(chunk, input.length()));
      assertEquals(expectProcess, bufferHelper(input, chunk));
      assertEquals(expectRead, readUsingJava(input, chunk));
      assertEquals(expectRead, readUsingReader(input, chunk, true));
      assertEquals(expectRead, readUsingReader(input, chunk, false));
    }
  }

  private static List<String> bufferHelper(String input, int chunk) throws IOException {

      final <T extends @Nullable Object, A extends @Nullable Object, R extends @Nullable Object>
          A result(Collector<T, A, R> collector, Iterable<T> inputs) {
        A accum = collector.supplier().get();
        for (T input : inputs) {
          collector.accumulator().accept(accum, input);
        }
        return accum;
      }
    },
    /** Get one accumulator for each element and merge the accumulators left-to-right. */

        try (Reader in = input) {
            return read(in, isStrict(options), getSource(options));
        }
    }

    @Override
    public Model read(InputStream input, Map<String, ?> options) throws IOException {
        Objects.requireNonNull(input, "input cannot be null");

        try (XmlStreamReader in = ReaderFactory.newXmlReader(input)) {

                "type": "missing",
                "loc": ["body", "file"],
                "msg": "Field required",
                "input": None,
            },
            {
                "type": "missing",
                "loc": ["body", "fileb"],
                "msg": "Field required",
                "input": None,
            },
            {
                "type": "missing",
                "loc": ["body", "token"],

    assert response.json() == {
        "detail": [
            {
                "type": "float_parsing",
                "loc": ["body", "price"],
                "msg": "Input should be a valid number, unable to parse string as a number",
                "input": "twenty",
            }
        ]
    }


def test_post_with_no_data(client: TestClient):
    response = client.post("/items/", json={})

	readCloser   io.ReadCloser          // raw input
	buf          *bufio.Reader          // input to the splitter
	columnNames  []string               // names of columns
	nameIndexMap map[string]int64       // name to column index
	current      [][]string             // current block of results to be returned
	recordsRead  int                    // number of records read in current slice
	input        chan *queueItem        // input for workers

  }

  private static void assertMessageDigestHashing(byte[] input, String algorithmName) {
    try {
      MessageDigest digest = MessageDigest.getInstance(algorithmName);
      assertEquals(
          HashCode.fromBytes(digest.digest(input)), ALGORITHMS.get(algorithmName).hashBytes(input));
      for (int bytes = 4; bytes <= digest.getDigestLength(); bytes++) {
        assertEquals(

                "loc": ["body", 0, "name"],
                "msg": "Field required",
                "input": {"age": "five"},
            },
            {
                "type": "decimal_parsing",
                "loc": ["body", 0, "age"],
                "msg": "Input should be a valid decimal",
                "input": "five",
            },
            {
                "type": "missing",

func (r *Reader) Close() error {
	// Close the input.
	// Potentially racy if the stream decoder is still reading.
	if r.readCloser != nil {
		r.readCloser.Close()
	}
	if r.exitReader != nil {
		close(r.exitReader)
		r.readerWg.Wait()
		r.exitReader = nil
		r.input = nil
	}
	return nil
}

// startReader will start a reader that accepts input from r.input.