private @interface ExampleAnnotation {}

  private enum AnEnum {
    @ExampleAnnotation
    FOO,
    BAR
  }

  @J2ktIncompatible
  @GwtIncompatible // reflection
  public void testGetField() {
    Field foo = Enums.getField(AnEnum.FOO);
    assertEquals("FOO", foo.getName());
    assertTrue(foo.isAnnotationPresent(ExampleAnnotation.class));

    Field bar = Enums.getField(AnEnum.BAR);

  }

  public void testFilterSimple() {
    Iterator<String> unfiltered = Lists.newArrayList("foo", "bar").iterator();
    Iterator<String> filtered = Iterators.filter(unfiltered, Predicates.equalTo("foo"));
    List<String> expected = Collections.singletonList("foo");
    List<String> actual = Lists.newArrayList(filtered);
    assertEquals(expected, actual);
  }

    Predicate<String> equalsFoo = Predicates.equalTo("Foo");
    Predicate<String> equalsBar = Predicates.equalTo("Bar");
    Predicate<String> trimEqualsFoo = Predicates.compose(equalsFoo, trim);
    Function<String, String> identity = Functions.identity();

    assertTrue(trimEqualsFoo.apply("Foo"));
    assertTrue(trimEqualsFoo.apply("   Foo   "));
    assertFalse(trimEqualsFoo.apply("Foo-b-que"));

    new EqualsTester()

        List<? super String> list) {
      return notSubtype(list);
    }

    // Can't test getSupertype() or getSubtype() because JDK reflection doesn't consider
    // Foo<?> and Foo<? extends Bar> equal for class Foo<T extends Bar>
    @TestSubtype(suppressGetSupertype = true, suppressGetSubtype = true)
    public UseIterable<?> explicitTypeBoundIsSubtypeOfImplicitTypeBound(

            return ("{" + c + "}").toCharArray();
          }
        };
    EscaperAsserts.assertBasic(wrappingEscaper);
    // '[' and '@' lie either side of [A-Z].
    assertEquals("{[}FOO{@}BAR{]}", wrappingEscaper.escape("[FOO@BAR]"));
  }

  public void testSafeRange_maxLessThanMin() throws IOException {
    // Basic escaping of unsafe chars (wrap them in {,}'s)
    CharEscaper wrappingEscaper =

  public void testNullIsPassedThrough() {
    Converter<String, String> nullsArePassed = sillyConverter(false);
    assertEquals("forward", nullsArePassed.convert("foo"));
    assertEquals("forward", nullsArePassed.convert(null));
    assertEquals("backward", nullsArePassed.reverse().convert("foo"));
    assertEquals("backward", nullsArePassed.reverse().convert(null));
  }

  public void testNullIsNotPassedThrough() {

  }

  @Override
  protected Map<String, Map<Integer, Character>> makePopulatedMap() {
    RowSortedTable<Integer, String, Character> table = TreeBasedTable.create();
    table.put(1, "foo", 'a');
    table.put(1, "bar", 'b');
    table.put(3, "foo", 'c');
    return Tables.unmodifiableRowSortedTable(table).columnMap();
  }

  }

  @Override
  protected Map<String, Map<Integer, Character>> makePopulatedMap() {
    Table<Integer, String, Character> table = HashBasedTable.create();
    table.put(1, "foo", 'a');
    table.put(1, "bar", 'b');
    table.put(3, "foo", 'c');
    return Tables.unmodifiableTable(table).columnMap();
  }

  @GwtIncompatible // StringBuilder.append in GWT invokes Object.toString(), unlike the JRE version.
  public void testDontConvertCharSequenceToString() {
    assertEquals("foo,foo", Joiner.on(",").join(new DontStringMeBro(), new DontStringMeBro()));
    assertEquals(
        "foo,bar,foo",
        Joiner.on(",").useForNull("bar").join(new DontStringMeBro(), null, new DontStringMeBro()));
  }

  @J2ktIncompatible

      populateTable(table);
      return table.rowMap();
    }

    void populateTable(Table<String, Integer, Character> table) {
      table.put("foo", 1, 'a');
      table.put("bar", 1, 'b');
      table.put("foo", 3, 'c');
    }

    @Override
    protected Map<String, Map<Integer, Character>> makeEmptyMap() {
      return makeTable().rowMap();
    }
  }