.addValue(2)
            .toString();
    String expected = "TestClass{field1=1, value1, field2=value2, 2}";

    assertEquals(expected, toTest);
  }

  public void testToStringLenient_addValue() {
    String toTest =
        MoreObjects.toStringHelper(new TestClass())
            .add("field1", 1)
            .addValue("value1")
            .add("field2", "value2")
            .addValue(2)