void testEncodeWithNullBuffer() {
            assertThrows(IllegalArgumentException.class, () -> testRequest.encode(null, 0), "Should throw exception for null buffer");
        }

        @Test
        @DisplayName("Should throw exception on negative index")
        void testEncodeWithNegativeIndex() {
            assertThrows(IllegalArgumentException.class, () -> testRequest.encode(testBuffer, -1),

  }

  public void testGet_bad() {
    ImmutableLongArray iia = ImmutableLongArray.of(0, 1, 3);
    assertThrows(IndexOutOfBoundsException.class, () -> iia.get(-1));
    assertThrows(IndexOutOfBoundsException.class, () -> iia.get(3));

    ImmutableLongArray sub = iia.subArray(1, 2);
    assertThrows(IndexOutOfBoundsException.class, () -> sub.get(-1));
  }

  public void testIndexOf() {

    assertThat(Arrays.equals(new double[] {1.0, 0.0, 0.0}, Doubles.ensureCapacity(ARRAY1, 2, 1)))
        .isTrue();
  }

  public void testEnsureCapacity_fail() {
    assertThrows(IllegalArgumentException.class, () -> Doubles.ensureCapacity(ARRAY1, -1, 1));
    assertThrows(IllegalArgumentException.class, () -> Doubles.ensureCapacity(ARRAY1, 1, -1));
  }

  @GwtIncompatible // Double.toString returns different value in GWT.

        TestIterator iterator = new TestIterator(null);

        UnsupportedOperationException ex = assertThrows(UnsupportedOperationException.class, iterator::remove);
        assertEquals("Not supported", ex.getMessage());
    }

    @Test
    @DisplayName("Null delegate causes NPE")
    void nullDelegate() {
        assertThrows(NullPointerException.class, () -> {
            new FileEntryAdapterIterator(parent, null, null) {

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
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.ArgumentMatchers.anyInt;
import static org.mockito.Mockito.lenient;
import static org.mockito.Mockito.times;

        assertThrows(
                InvalidArtifactRTException.class,
                () -> new DefaultArtifact(
                        groupId, artifactId, version, scope, type, classifier, artifactHandler, false));
        if (version == null) {
            assertThrows(
                    InvalidArtifactRTException.class,

import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_REMOVE;
import static com.google.common.collect.testing.testers.ReflectionFreeAssertThrows.assertThrows;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.collect.testing.AbstractMapTester;

/** Replacements for JUnit's {@code assertThrows} that work under GWT/J2CL. */
@GwtCompatible
@NullMarked
final class ReflectionFreeAssertThrows {
  interface ThrowingRunnable {
    void run() throws Throwable;
  }

  interface ThrowingSupplier {
    @Nullable Object get() throws Throwable;
  }

  @CanIgnoreReturnValue
  static <T extends Throwable> T assertThrows(

/** Replacements for JUnit's {@code assertThrows} that work under GWT/J2CL. */
@GwtCompatible
@NullMarked
final class ReflectionFreeAssertThrows {
  interface ThrowingRunnable {
    void run() throws Throwable;
  }

  interface ThrowingSupplier {
    @Nullable Object get() throws Throwable;
  }

  @CanIgnoreReturnValue
  static <T extends Throwable> T assertThrows(

    List<V> values = singletonList(v3());
    assertThrows(UnsupportedOperationException.class, () -> multimap().replaceValues(k0(), values));
  }

  @MapFeature.Require(absent = SUPPORTS_PUT)
  public void testReplaceValuesPutNotSupported() {
    List<V> values = singletonList(v3());
    assertThrows(UnsupportedOperationException.class, () -> multimap().replaceValues(k0(), values));
  }