String msg = "Alphanumeric characters are always 'safe' and should not be explicitly specified";
    IllegalArgumentException expected =
        assertThrows(IllegalArgumentException.class, () -> new PercentEscaper("-+#abc.!", false));
    assertThat(expected).hasMessageThat().isEqualTo(msg);
  }

  public void testBadArguments_plusforspace() {
    // space can be a safe char if plusForSpace is false

        // These test cases ensure that the new java.util.Base64 implementation
        // produces the same output as the old custom implementation

        // Test case 1: Standard padding
        final byte[] data1 = "abc".getBytes();
        assertEquals("YWJj", Base64Util.encode(data1));

        // Test case 2: Single padding
        final byte[] data2 = "abcd".getBytes();
        assertEquals("YWJjZA==", Base64Util.encode(data2));

import types
import typing
import warnings
from collections import deque
from collections.abc import Mapping, Sequence
from dataclasses import is_dataclass
from typing import (
    Annotated,
    Any,
    TypeGuard,
    TypeVar,
    Union,
    get_args,
    get_origin,
)

from fastapi.types import UnionType
from pydantic import BaseModel
from pydantic.version import VERSION as PYDANTIC_VERSION

    assertThat(request.body).isNull()
    assertThat(request.tags).isEqualTo(EmptyTags)
  }

  @Test
  fun string() {
    val contentType = "text/plain; charset=utf-8".toMediaType()
    val body = "abc".toByteArray().toRequestBody(contentType)
    assertThat(body.contentType()).isEqualTo(contentType)
    assertThat(body.contentLength()).isEqualTo(3)
    assertThat(bodyToHex(body)).isEqualTo("616263")

  private static final ImmutableSet<String> VALID_NAME =
      ImmutableSet.of(
          // keep-sorted start
          "123.cn",
          "8server.shop",
          "a" + DELTA + "b.com",
          "abc.a23",
          "biz.com.ua",
          "f--1.com",
          "f--o",
          "f-_-o.cOM",
          "f11-1.com",
          "fOo",
          "f_a",
          "foo.com",
          "foo.net.us\uFF61ocm",

        SMBUtil.writeInt4(1, buffer, notifyOffset + 4);
        SMBUtil.writeInt4(6, buffer, notifyOffset + 8); // 6 bytes filename
        System.arraycopy("abc".getBytes("UnicodeLittleUnmarked"), 0, buffer, notifyOffset + 12, 6);

        // Second notification starts at aligned offset
        notifyOffset = 108; // 80 + 28
        SMBUtil.writeInt4(0, buffer, notifyOffset);

    void isAllDigitsTrueForPureNumeric(String numeric) {
        assertTrue(UniAddress.isAllDigits(numeric));
    }

    @ParameterizedTest
    @ValueSource(strings = { "12a", "abc", "123 " })
    void isAllDigitsFalseForNonNumeric(String nonNumeric) {
        assertFalse(UniAddress.isAllDigits(nonNumeric));
    }

    @Test
    void isAllDigitsHandlesEmptyString() {

import inspect
import sys
from collections.abc import Callable
from dataclasses import dataclass, field
from functools import cached_property, partial
from typing import Any, Literal

from fastapi._compat import ModelField
from fastapi.security.base import SecurityBase
from fastapi.types import DependencyCacheKey

if sys.version_info >= (3, 13):  # pragma: no cover
    from inspect import iscoroutinefunction
else:  # pragma: no cover

  public void testReadEmptyString() throws IOException {
    assertReadsCorrectly("");
  }

  public void testReadsStringsCorrectly() throws IOException {
    assertReadsCorrectly("abc");
    assertReadsCorrectly("abcde");
    assertReadsCorrectly("abcdefghijkl");
    assertReadsCorrectly(
        ""
            + "abcdefghijklmnopqrstuvwxyz\n"
            + "ABCDEFGHIJKLMNOPQRSTUVWXYZ\r"

    //     smaller version of the same problem.
    //     Say we are rotating abcdefgh by 5. We start with abcde|fgh. The smaller block is [fgh]:
    //     [abc]de|[fgh] -> [fgh]de|[abc]. Now [fgh] is in the right place, but we need to swap [de]
    //     with [abc]: fgh[de]|a[bc] -> fgh[bc]|a[de]. Now we need to swap [a] with [bc]:
    //     fgh[b]c|[a]de -> fgh[a]c|[b]de. Finally we need to swap [c] with [b]: