for (BoundType type : BoundType.values()) {
      assertNull(sortedMultiset.headMultiset(e0(), type).lastEntry());
      assertNull(sortedMultiset.tailMultiset(e0(), type).firstEntry());
    }
  }

  @CollectionSize.Require(ZERO)
  public void testEmptyMultisetLast() {
    assertNull(sortedMultiset.lastEntry());
    assertThrows(
        NoSuchElementException.class, () -> assertNull(sortedMultiset.elementSet().last()));
  }

import okhttp3.internal.platform.android.StandardAndroidSocketAdapter
import org.conscrypt.Conscrypt
import org.junit.Assert.assertFalse
import org.junit.Assert.assertNotNull
import org.junit.Assert.assertNull
import org.junit.Assert.assertTrue
import org.junit.Assume.assumeFalse
import org.junit.Assume.assumeTrue
import org.junit.Test
import org.junit.runner.RunWith
import org.robolectric.ParameterizedRobolectricTestRunner

    try {
      assertNull(
          "remove(null) should return null or throw NullPointerException", getMap().remove(null));
    } catch (NullPointerException tolerated) {
    }
    expectUnchanged();
  }

  @MapFeature.Require({SUPPORTS_REMOVE, ALLOWS_NULL_KEY_QUERIES})
  public void testRemove_nullSupportedMissing() {
    assertNull("remove(null) should return null", getMap().remove(null));

        assertNull(smbAuthenticationHolder.get(null));
        assertNull(smbAuthenticationHolder.get(""));
        assertNull(smbAuthenticationHolder.get(" "));
        assertNull(smbAuthenticationHolder.get("smb://"));
        assertNull(smbAuthenticationHolder.get("smb://hoge:1000/"));
        assertNull(smbAuthenticationHolder.get("smb://foo/"));
        assertNull(smbAuthenticationHolder.get("smb://foo:10000/"));

        NegTokenInit parsed = new NegTokenInit(bytes);
        assertNull(parsed.getMechanisms(), "Mechanisms should be null when absent");
        assertEquals(0, parsed.getContextFlags(), "Flags should be zero when absent");
        assertNull(parsed.getMechanismToken(), "Mechanism token should be null when absent");
        assertNull(parsed.getMechanismListMIC(), "MIC should be null when absent");
    }

    @Test

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertInstanceOf;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;

            assertNull(context.getHashAlgos());
            assertNull(context.getSalt());
        }

        @Test
        @DisplayName("Should handle null hash algorithms")
        void testNullHashAlgorithms() {
            context = new PreauthIntegrityNegotiateContext(mockConfig, null, new byte[16]);

            assertNull(context.getHashAlgos());

        assertEquals(0L, concreteResponse.getMid());
        assertEquals(0, concreteResponse.getCommand());
        assertNull(concreteResponse.getDigest());
        assertNull(concreteResponse.getException());
        assertNull(concreteResponse.getExpiration());
        assertFalse(concreteResponse.isError());
        assertFalse(concreteResponse.isReceived());
    }

    @Test

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3

import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertNull
import okhttp3.MediaType.Companion.toMediaTypeOrNull

/**
 * Test MediaType API and parsing.
 *
 * This test includes tests from [Guava's](https://code.google.com/p/guava-libraries/)
 * MediaTypeTest.
 */

    expectReplacement(entry(k0(), v3()));
  }

  @MapFeature.Require(SUPPORTS_PUT)
  public void testPut_supportedNotPresent() {
    assertNull("put(notPresent, value) should return null", put(e3()));
    expectAdded(e3());
  }

  @MapFeature.Require({FAILS_FAST_ON_CONCURRENT_MODIFICATION, SUPPORTS_PUT})
  @CollectionSize.Require(absent = ZERO)