@J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testStaticNullPointers() throws Exception {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicStaticMethods(CharMatcher.class);
    tester.testAllPublicInstanceMethods(CharMatcher.any());
    tester.testAllPublicInstanceMethods(CharMatcher.anyOf("abc"));
  }

  private static final CharMatcher WHATEVER =
      new CharMatcher() {

  @J2ktIncompatible
  @GwtIncompatible // com.google.common.testing.NullPointerTester
  public void testNullPointer() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicConstructors(MediaType.class);
    tester.testAllPublicStaticMethods(MediaType.class);
    tester.testAllPublicInstanceMethods(MediaType.parse("text/plain"));
  }

  public void testToString() {

public class AbstractSetTester<E> extends AbstractCollectionTester<E> {
  /*
   * Previously we had a field named set that was initialized to the value of
   * collection in setUp(), but that caused problems when a tester changed the
   * value of set or collection but not both.
   */
  protected final Set<E> getSet() {
    return (Set<E>) collection;
  }

@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class ListSetTester<E> extends AbstractListTester<E> {
  @ListFeature.Require(SUPPORTS_SET)
  @CollectionSize.Require(absent = ZERO)
  public void testSet() {
    doTestSet(e3());
  }

  @CollectionSize.Require(absent = ZERO)
  @CollectionFeature.Require(ALLOWS_NULL_VALUES)
  @ListFeature.Require(SUPPORTS_SET)
  public void testSet_null() {
    doTestSet(null);

        assertEquals(negativeFlags, negAvFlags.getFlags(), "Flags should match the negative input integer");
    }

    /**
     * Test getFlags method.
     * This is implicitly tested by the constructors, but an explicit test ensures its direct functionality.
     */
    @Test
    void testGetFlags() {
        int expectedFlags = 0xAABBCCDD;
        AvFlags avFlags = new AvFlags(expectedFlags);

  protected final <T> void setDefault(Class<T> type, T value) {
    tester.setDefault(type, value);
  }

  /**
   * Sets two distinct values for {@code type}. These values can be used for both null pointer
   * testing and equals testing.
   *
   * @since 17.0
   */
  protected final <T> void setDistinctValues(Class<T> type, T value1, T value2) {
    tester.setDistinctValues(type, value1, value2);
  }

It is also built to work as a future reference so you can come back and see exactly what you need.

## Run the code { #run-the-code }

All the code blocks can be copied and used directly (they are actually tested Python files).

To run any of the examples, copy the code to a file `main.py`, and start `fastapi dev` with:

<div class="termy">

```console

          BloomFilter.create(Funnels.unencodedCharsFunnel(), n, p);
        });
  }

  public void testNullPointers() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicInstanceMethods(BloomFilter.create(Funnels.unencodedCharsFunnel(), 100));
    tester.testAllPublicStaticMethods(BloomFilter.class);
  }

  /** Tests that we never get an optimal hashes number of zero. */

@GwtCompatible
@NullMarked
public class ObjectArraysTest extends TestCase {

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testNullPointerExceptions() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicStaticMethods(ObjectArrays.class);
  }

  @GwtIncompatible // ObjectArrays.newArray(Class, int)
  public void testNewArray_fromClass_empty() {

 *
 * <p>TODO: see how much of this is actually needed once Map testers are written. (It was cloned
 * from AbstractCollectionTester.)
 *
 * @param <K> the key type of the map to be tested.
 * @param <V> the value type of the map to be tested.
 * @author George van den Driessche
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")