assertFalse(TypeToken.of(wildcardType).isSupertypeOf(wildcardType));
    assertFalse(TypeToken.of(int[].class).isSupertypeOf(wildcardType));
  }

  public void testAssignableWildcardTypeParameterToClassTypeParameter() {
    TypeToken<?> wildcardType = new TypeToken<Iterable<? extends Object[]>>() {};
    assertFalse(new TypeToken<Iterable<Object[]>>() {}.isSupertypeOf(wildcardType));

        // Test invalid search fields
        assertFalse(queryCommand.isSearchField("invalid"));
        assertFalse(queryCommand.isSearchField("unknown"));
        assertFalse(queryCommand.isSearchField(""));
    }

    /**
     * Test isSearchField() with null field.
     */
    @Test
    public void test_isSearchField_withNull() {
        assertFalse(queryCommand.isSearchField(null));
    }

    /**

        // After first call isPrimary should be false
        assertFalse(d.getIsPrimary(), "isPrimary should be cleared after first call");
        // Second call keeps the same state
        SmbComTransactionResponse r2 = (SmbComTransactionResponse) d.nextElement();
        assertSame(d, r2, "Subsequent calls still return same instance");
        assertFalse(d.getIsPrimary(), "isPrimary remains false after subsequent call");
    }

    assertFalse(FluentIterable.from(set).contains(null));
  }

  public void testContains_nullIterableYes() {
    Iterable<String> iterable = iterable("a", null, "b");
    assertTrue(FluentIterable.from(iterable).contains(null));
  }

  public void testContains_nullIterableNo() {
    Iterable<String> iterable = iterable("a", "b");
    assertFalse(FluentIterable.from(iterable).contains(null));

  }

  protected void expectMissingKeys(K... elements) {
    for (K element : elements) {
      assertFalse("Should not contain key " + element, getMap().containsKey(element));
    }
  }

  protected void expectMissingValues(V... elements) {
    for (V element : elements) {
      assertFalse("Should not contain value " + element, getMap().containsValue(element));
    }
  }

  /**

  }

  public void testFutureCancelAfterCompletion() throws Exception {
    inputFuture.set(VALID_INPUT_DATA);
    assertFalse(resultFuture.cancel(true));
    assertFalse(resultFuture.isCancelled());
    assertFalse(inputFuture.isCancelled());
    assertFalse(outputFuture.isCancelled());
    assertThat(resultFuture.get()).isEqualTo(RESULT_DATA);
  }

  }

  public void testFutureCancelAfterCompletion() throws Exception {
    inputFuture.set(VALID_INPUT_DATA);
    assertFalse(resultFuture.cancel(true));
    assertFalse(resultFuture.isCancelled());
    assertFalse(inputFuture.isCancelled());
    assertFalse(outputFuture.isCancelled());
    assertThat(resultFuture.get()).isEqualTo(RESULT_DATA);
  }

    }

    @Test
    public void test_isLogFilename_invalidExtension() {
        final AdminMaintenanceAction action = new AdminMaintenanceAction();
        assertFalse(action.isLogFilename("fess.txt"));
        assertFalse(action.isLogFilename("fess.xml"));
        assertFalse(action.isLogFilename("fess.log.bak"));
    }

    // ===================================================================================

        assertFalse(iterator.hasNext());
        assertNull(iterator.next());

        verify(resource, never()).close();
    }

    @Test
    @DisplayName("Empty iterator")
    void emptyIterator() {
        when(delegate.hasNext()).thenReturn(false);

        TestIterator iterator = new TestIterator(null);

        assertFalse(iterator.hasNext());

        List<String> docIds = Collections.emptyList();
        List<Integer> indexes = Collections.emptyList();
        RelevanceEvaluationResult result = RelevanceEvaluationResult.withRelevantDocs(docIds, indexes);

        assertFalse(result.isHasRelevantResults());
        assertTrue(result.getRelevantDocIds().isEmpty());
        assertTrue(result.getRelevantIndexes().isEmpty());
    }

    @Test
    public void test_withRelevantDocs_nullDocIds() {