when(mock.getAll(ImmutableList.of("key"))).thenReturn(ImmutableMap.of("key", Boolean.TRUE));
    assertEquals(ImmutableMap.of("key", Boolean.TRUE), forward.getAll(ImmutableList.of("key")));
  }

  public void testApply() {
    when(mock.apply("key")).thenReturn(Boolean.TRUE);
    assertSame(Boolean.TRUE, forward.apply("key"));
  }

  public void testInvalidate() {
    forward.invalidate("key");
    verify(mock).invalidate("key");

    when(mock.getAll(ImmutableList.of("key"))).thenReturn(ImmutableMap.of("key", Boolean.TRUE));
    assertEquals(ImmutableMap.of("key", Boolean.TRUE), forward.getAll(ImmutableList.of("key")));
  }

  public void testApply() {
    when(mock.apply("key")).thenReturn(Boolean.TRUE);
    assertSame(Boolean.TRUE, forward.apply("key"));
  }

  public void testInvalidate() {
    forward.invalidate("key");
    verify(mock).invalidate("key");

        .testEquals();
  }

  public void testReverseReverse() {
    Converter<String, Long> converter = STR_TO_LONG;
    assertEquals(converter, converter.reverse().reverse());
  }

  public void testApply() {
    assertEquals(LONG_VAL, STR_TO_LONG.apply(STR_VAL));
  }

  private static class StringWrapper {
    private final String value;

    public StringWrapper(String value) {
      this.value = value;

        .testEquals();
  }

  public void testReverseReverse() {
    Converter<String, Long> converter = STR_TO_LONG;
    assertEquals(converter, converter.reverse().reverse());
  }

  public void testApply() {
    assertEquals(LONG_VAL, STR_TO_LONG.apply(STR_VAL));
  }

  private static class StringWrapper {
    private final String value;

    public StringWrapper(String value) {
      this.value = value;

    // separate above
    assertEquals(Range.closed(4, 12), range.span(Range.closed(10, 12)));
    assertEquals(Range.atLeast(4), range.span(Range.atLeast(10)));
  }

  public void testApply() {
    Predicate<Integer> predicate = Range.closed(2, 3);
    assertFalse(predicate.apply(1));
    assertTrue(predicate.apply(2));
    assertTrue(predicate.apply(3));
    assertFalse(predicate.apply(4));
  }

    // separate above
    assertEquals(Range.closed(4, 12), range.span(Range.closed(10, 12)));
    assertEquals(Range.atLeast(4), range.span(Range.atLeast(10)));
  }

  public void testApply() {
    Predicate<Integer> predicate = Range.closed(2, 3);
    assertFalse(predicate.apply(1));
    assertTrue(predicate.apply(2));
    assertTrue(predicate.apply(3));
    assertFalse(predicate.apply(4));
  }