public void test_append_emptyString() {
        StringBuilder buf = new StringBuilder();
        Supplier<Object> supplier = () -> "";

        monitorTarget.append(buf, "emptyKey", supplier);
        assertEquals("\"emptyKey\":\"\"", buf.toString());
    }

    // Test append with very long string
    public void test_append_veryLongString() {
        StringBuilder buf = new StringBuilder();

        // setObject should handle various inputs
        try {
            WebApiUtil.setObject("validKey", "validValue");
            WebApiUtil.setObject("", "emptyKey");
            WebApiUtil.setObject("nullValue", null);
            WebApiUtil.setObject(null, "nullKey");
            WebApiUtil.setObject(null, null);
        } catch (Exception e) {

  }

  protected Collection<Method> suppressForHashSet() {
    return emptySet();
  }

  protected Collection<Method> suppressForLinkedHashSet() {
    return emptySet();
  }

  protected Collection<Method> suppressForEnumSet() {
    return emptySet();
  }

  protected Collection<Method> suppressForSynchronizedNavigableSet() {
    return emptySet();
  }

    return emptySet();
  }

  private Collection<Method> suppressForEmptySortedMap() {
    return emptySet();
  }

  protected Collection<Method> suppressForSingletonMap() {
    return emptySet();
  }

  protected Collection<Method> suppressForHashMap() {
    return emptySet();
  }

  protected Collection<Method> suppressForHashtable() {
    return emptySet();
  }

  }

  protected Collection<Method> suppressForCheckedMap() {
    return emptySet();
  }

  protected Collection<Method> suppressForCheckedSortedMap() {
    return emptySet();
  }

  protected Collection<Method> suppressForEmptyMap() {
    return emptySet();
  }

  protected Collection<Method> suppressForSingletonMap() {
    return emptySet();
  }

  protected Collection<Method> suppressForHashMap() {

  }

  protected Collection<Method> suppressForArrayDeque() {
    return emptySet();
  }

  protected Collection<Method> suppressForLinkedList() {
    return emptySet();
  }

  protected Collection<Method> suppressForArrayBlockingQueue() {
    return emptySet();
  }

  protected Collection<Method> suppressForConcurrentLinkedQueue() {
    return emptySet();
  }

  }

  protected Collection<Method> suppressForEmptyList() {
    return emptySet();
  }

  protected Collection<Method> suppressForSingletonList() {
    return emptySet();
  }

  protected Collection<Method> suppressForArraysAsList() {
    return emptySet();
  }

  protected Collection<Method> suppressForArrayList() {
    return emptySet();
  }

  protected Collection<Method> suppressForLinkedList() {

    Set<Object> set = new HashSet<>();
    assertThat(union(emptySet(), emptySet()).copyInto(set)).isSameInstanceAs(set);
    assertThat(intersection(emptySet(), emptySet()).copyInto(set)).isSameInstanceAs(set);
    assertThat(difference(emptySet(), emptySet()).copyInto(set)).isSameInstanceAs(set);
    assertThat(symmetricDifference(emptySet(), emptySet()).copyInto(set)).isSameInstanceAs(set);
  }

  }

  protected Collection<Method> suppressForEmptySet() {
    return emptySet();
  }

  protected Collection<Method> suppressForSingletonSet() {
    return emptySet();
  }

  protected Collection<Method> suppressForHashSet() {
    return emptySet();
  }

  protected Collection<Method> suppressForLinkedHashSet() {
    return emptySet();
  }

  protected Collection<Method> suppressForEnumSet() {

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

package com.google.common.collect.testing.google;

import static java.util.Collections.emptySet;

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.Multiset;
import com.google.common.collect.testing.features.Feature;
import com.google.common.collect.testing.features.TesterAnnotation;