}

  @GwtIncompatible // java.util.BitSet
  private void doTestSetBits(CharMatcher matcher) {
    BitSet bitset = new BitSet();
    matcher.setBits(bitset);
    for (int i = Character.MIN_VALUE; i <= Character.MAX_VALUE; i++) {
      assertEquals(matcher.matches((char) i), bitset.get(i));
    }
  }

  public void testEmpty() throws Exception {
    doTestEmpty(CharMatcher.any());

  @Test
  public void predecessors_oneEdge() {
    putEdge(N1, N2);
    assertThat(graph.predecessors(N2)).containsExactly(N1);
    assertThat(graph.predecessors(N1)).containsExactly(N2);
  }

  @Test
  public void successors_oneEdge() {
    putEdge(N1, N2);
    assertThat(graph.successors(N1)).containsExactly(N2);
    assertThat(graph.successors(N2)).containsExactly(N1);
  }

  @Test

    void setDependencyFilter(ArtifactFilter artifactFilter);

    ArtifactHandler getArtifactHandler();

    List<String> getDependencyTrail();

    void setDependencyTrail(List<String> dependencyTrail);

    void setScope(String scope);

    VersionRange getVersionRange();

    void setVersionRange(VersionRange newRange);

    void selectVersion(String version);

    void setGroupId(String groupId);

    }

    public void projectStarted(ExecutionEvent event) {
        // default does nothing
    }

    public void projectSucceeded(ExecutionEvent event) {
        // default does nothing
    }

    public void projectFailed(ExecutionEvent event) {
        // default does nothing
    }

    public void forkStarted(ExecutionEvent event) {
        // default does nothing
    }

    }

    @Override
    public void artifactDeployed(RepositoryEvent event) {
        dispatcher.onEvent(event);
        delegate.artifactDeployed(event);
    }

    @Override
    public void artifactDeploying(RepositoryEvent event) {
        dispatcher.onEvent(event);
        delegate.artifactDeploying(event);
    }

    @Override
    public void artifactDescriptorInvalid(RepositoryEvent event) {

  private static final ImmutableList<Double> EMPTY_DATASET = ImmutableList.of();

  public void testScale_zero() {
    assertThrows(IllegalArgumentException.class, () -> Quantiles.scale(0));
  }

  public void testScale_negative() {
    assertThrows(IllegalArgumentException.class, () -> Quantiles.scale(-4));
  }

  public void testScale_index_negative() {
    Quantiles.Scale intermediate = Quantiles.scale(10);

   */

  public void testSize() {
    int unused = create().size();
  }

  public void testIsEmpty() {
    boolean unused = create().isEmpty();
  }

  public void testRemove() {
    create().remove(null);
  }

  public void testClear() {
    create().clear();
  }

  public void testContainsKey() {
    boolean unused = create().containsKey(null);

    private DefaultToolchainsReader reader = new DefaultToolchainsReader();

    @Test
    void testMergeNulls() {
        merger.merge(null, null, null);

        PersistedToolchains pt = new PersistedToolchains();
        merger.merge(pt, null, null);
        merger.merge(null, pt, null);
    }

    @Test
    void testMergeJdk() throws Exception {

  }

  public void testNewArrayType_serializable() {
    SerializableTester.reserializeAndAssert(Types.newArrayType(int[].class));
  }

  private static class WithWildcardType {

    @SuppressWarnings("unused")
    void withoutBound(List<?> list) {}

    @SuppressWarnings("unused")
    void withObjectBound(List<? extends Object> list) {}

    @SuppressWarnings("unused")

  }

  public void testNewArrayType_serializable() {
    SerializableTester.reserializeAndAssert(Types.newArrayType(int[].class));
  }

  private static class WithWildcardType {

    @SuppressWarnings("unused")
    void withoutBound(List<?> list) {}

    @SuppressWarnings("unused")
    void withObjectBound(List<? extends Object> list) {}

    @SuppressWarnings("unused")