map.remove("a");
    assertFalse(underlying.containsKey("a"));

    Set<String> keys = map.keySet();
    keys.remove("b");
    assertFalse(underlying.containsKey("b"));

    Iterator<String> keyIterator = keys.iterator();
    keyIterator.next();
    keyIterator.remove();
    assertFalse(underlying.containsKey("c"));

    Collection<String> values = map.values();

    Iterator<Subscriber> empty = registry.getSubscribers("");
    assertFalse(empty.hasNext());

    empty = registry.getSubscribers("");

    registry.register(s1);
    assertFalse(empty.hasNext());

    Iterator<Subscriber> one = registry.getSubscribers("");
    assertEquals(s1, one.next().target);
    assertFalse(one.hasNext());

    one = registry.getSubscribers("");

    assertFalse(
        "A List should not equal another List containing different elements.",
        getList().equals(other));
  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)
  public void testEquals_otherListContainingNull() {
    List<E> other = new ArrayList<>(getSampleElements());
    other.set(other.size() / 2, null);
    assertFalse(

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.model;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

/**
 * Tests {@code Prerequisites}.
 *
 */
class PrerequisitesTest {

    @Test

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

/**
 * Tests {@code Site}.
 *
 */
class SiteTest {

    @Test
    void testHashCodeNullSafe() {
        new Site().hashCode();
    }

    @Test
    void testEqualsNullSafe() {
        assertFalse(new Site().equals(null));

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.model;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

/**
 * Tests {@code ActivationProperty}.
 *
 */
class ActivationPropertyTest {

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.model;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

/**
 * Tests {@code Developer}.
 *
 */
class DeveloperTest {

    @Test

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.model;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

/**
 * Tests {@code Parent}.
 *
 */
class ParentTest {

    @Test

 * under the License.
 */
package org.apache.maven.plugin.internal;

import org.eclipse.aether.util.version.GenericVersionScheme;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;

class MavenPluginJavaPrerequisiteCheckerTest {

    @Test
    void testMatchesVersion() {

    Invokable<?, Object> invokable = A.method("protectedMethod");
    assertFalse(invokable.isAbstract());
    assertFalse(invokable.isPrivate());
    assertFalse(invokable.isPackagePrivate());
    assertFalse(invokable.isFinal());
    assertFalse(invokable.isPublic());
    assertTrue(invokable.isProtected());
    assertTrue(invokable.isAnnotationPresent(Tested.class));
  }

  public void testFinalMethod() throws Exception {