@MapFeature.Require(absent = SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)
  public void testPutIfAbsent_unsupportedPresentExistingValue() {
    try {
      assertEquals(
          "putIfAbsent(present, existingValue) should return present or throw",
          v0(),
          putIfAbsent(e0()));
    } catch (UnsupportedOperationException tolerated) {
    }
    expectUnchanged();
  }

  @MapFeature.Require(absent = SUPPORTS_PUT)

  @MapFeature.Require(absent = SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)
  public void testPutIfAbsent_unsupportedPresentExistingValue() {
    try {
      assertEquals(
          "putIfAbsent(present, existingValue) should return present or throw",
          v0(),
          getMap().putIfAbsent(k0(), v0()));
    } catch (UnsupportedOperationException tolerated) {
    }
    expectUnchanged();
  }

    }

    @Test
    @DisplayName("Test flag checking with bitwise AND")
    void testFlagChecking() {
        int flags = SecurityInfo.OWNER_SECURITY_INFO | SecurityInfo.DACL_SECURITY_INFO;

        // Test presence of flags
        assertTrue((flags & SecurityInfo.OWNER_SECURITY_INFO) != 0);
        assertTrue((flags & SecurityInfo.DACL_SECURITY_INFO) != 0);

        // Test absence of flags

   * and returns {@code null} if non-ASCII digits are present in the string.
   *
   * <p>Note that strings prefixed with ASCII {@code '+'} are rejected, even though {@link
   * Integer#parseInt(String)} accepts them.
   *
   * @param string the string representation of an integer value
   * @return the integer value represented by {@code string}, or {@code null} if {@code string} has

	"fmt"
	"strconv"
	"strings"
)

const (
	byteRangePrefix = "bytes="
)

// HTTPRangeSpec represents a range specification as supported by S3 GET
// object request.
//
// Case 1: Not present -> represented by a nil RangeSpec
// Case 2: bytes=1-10 (absolute start and end offsets) -> RangeSpec{false, 1, 10}
// Case 3: bytes=10- (absolute start offset with end offset unspecified) -> RangeSpec{false, 10, -1}

        NdrBuffer decodeBuffer = new NdrBuffer(buffer, 0);
        lsarpc.LsarDomainInfo decodedInfo = new lsarpc.LsarDomainInfo();
        decodedInfo.decode(decodeBuffer);

        // Verify nulls are preserved
        assertEquals(0, decodedInfo.name.length);
        assertEquals(0, decodedInfo.name.maximum_length);
        assertNull(decodedInfo.name.buffer);
        assertNull(decodedInfo.sid);
    }

    @Test

        // Encode to set headerStart
        req.encode(buffer, 0);

        // Then
        byte[] pathBytes = unicodePath.getBytes(StandardCharsets.UTF_16LE);

        // Verify Unicode path is preserved
        byte[] actualPath = new byte[pathBytes.length];
        System.arraycopy(buffer, Smb2Constants.SMB2_HEADER_LENGTH + 8, actualPath, 0, pathBytes.length);
        assertArrayEquals(pathBytes, actualPath);
    }

import jcifs.internal.util.SMBUtil;
import jcifs.util.Hexdump;

/**
 * Internal representation of SIDs
 *
 * A Windows SID is a numeric identifier used to represent Windows
 * accounts. SIDs are commonly represented using a textual format such as
 * {@code S-1-5-21-1496946806-2192648263-3843101252-1029} but they may
 * also be resolved to yield the name of the associated Windows account
 * such as {@code Administrators} or {@code MYDOM\alice}.

  /**
   * Removes {@code node} if it is present; all edges incident to {@code node} will also be removed.
   *
   * @return {@code true} if the network was modified as a result of this call
   */
  @CanIgnoreReturnValue
  boolean removeNode(N node);

  /**
   * Removes {@code edge} from this network, if it is present.
   *

        assertEquals(d1, d2);

        // Different type -> false
        assertFalse(a.equals("not-an-auth"));
    }

    @Test
    @DisplayName("isAnonymous: depends on subject presence and super")
    void isAnonymous_behaviour() {
        Kerb5Authenticator anon = new Kerb5Authenticator((Subject) null);
        assertTrue(anon.isAnonymous(), "Null subject with default super should be anonymous");