PrintStream ps = new PrintStream(baos);

        // Create test data and dump from offset
        byte[] data = createTestData(64);
        int offset = 16;
        int length = 32;

        Hexdump.hexdump(ps, data, offset, length);
        String output = baos.toString();

        assertNotNull(output);

      "input": "foo"
    }
  ]
}
```

Çünkü burada `item_id` yol parametresi `int` tipinde bir değer beklerken `"foo"` yani `string` tipinde bir değer almıştı.

Aynı hata <a href="http://127.0.0.1:8000/items/4.2" class="external-link" target="_blank">http://127.0.0.1:8000/items/4.2</a> sayfasında olduğu gibi `int` yerine `float` bir değer verseydik de ortaya çıkardı.

/// check | Ek bilgi

      "msg": "Input should be a valid integer, unable to parse string as an integer",
      "input": "foo"
    }
  ]
}
```
тому що параметр шляху має значення `"foo"`, яке не є типом `int`.

Таку саму помилку отримаємо, якщо передати `float` замість `int`, як бачимо, у цьому прикладі: <a href="http://127.0.0.1:8000/items/4.2" class="external-link" target="_blank">http://127.0.0.1:8000/items/4.2</a>

/// check | Примітка

     * Verifies that the CRUD mode matches the expected mode.
     *
     * @param crudMode the actual CRUD mode
     * @param expectedMode the expected CRUD mode
     */
    protected void verifyCrudMode(final int crudMode, final int expectedMode) {
        if (crudMode != expectedMode) {
            throwValidationError(messages -> {
                messages.addErrorsCrudInvalidMode(GLOBAL, String.valueOf(expectedMode), String.valueOf(crudMode));

        .withRefreshes(ImmutableSet.of(DurationSpec.of(1, SECONDS), DurationSpec.of(1, DAYS)));
  }

  private static void warmUp(LoadingCache<Object, Object> cache, int minimum, int maximum) {
    for (int i = minimum; i < maximum; i++) {
      cache.getUnchecked(i);
    }
  }

  private Entry<Object, Object> entryOf(Object key, Object value) {
    return Maps.immutableEntry(key, value);
  }

    assertEquals(expected, getResponse(methodName).getResult());
  }

  /**
   * Causes this thread to call the named method, and asserts that the call returns the expected int
   * value.
   */
  public void callAndAssertReturns(int expected, String methodName, Object... arguments)
      throws Exception {
    checkNotNull(methodName);
    checkNotNull(arguments);
    sendRequest(methodName, arguments);

                return new String[0];
            }

            @Override
            public int getOffset() {
                return 0;
            }

            @Override
            public int getPageSize() {
                return 10;
            }

            @Override
            public int getStartPosition() {
                return 0;
            }

            @Override

     *
     * @param crudMode the actual CRUD mode provided
     * @param expectedMode the expected CRUD mode
     */
    protected void verifyCrudMode(final int crudMode, final int expectedMode) {
        if (crudMode != expectedMode) {
            throwValidationError(messages -> {
                messages.addErrorsCrudInvalidMode(GLOBAL, String.valueOf(expectedMode), String.valueOf(crudMode));

     * Verifies that the CRUD mode matches the expected mode.
     *
     * @param crudMode the actual CRUD mode
     * @param expectedMode the expected CRUD mode
     */
    protected void verifyCrudMode(final int crudMode, final int expectedMode) {
        if (crudMode != expectedMode) {
            throwValidationError(messages -> {
                messages.addErrorsCrudInvalidMode(GLOBAL, String.valueOf(expectedMode), String.valueOf(crudMode));

     *
     * @return The start position.
     */
    public abstract int getStartPosition();

    /**
     * Returns the page size.
     *
     * @return The page size.
     */
    public abstract int getPageSize();

    /**
     * Returns the offset.
     *
     * @return The offset.
     */
    public abstract int getOffset();

    /**
     * Returns the extra queries.
     *