"boiler <com\\.google\\.common\\.base\\.StringsTest[.$]ThrowsOnToString@[0-9a-f]+ "
                + "threw java\\.lang\\.UnsupportedOperationException> plate");
  }

  public void testLenientFormat_badArgumentToString_gwtFriendly() {
    assertThat(Strings.lenientFormat("boiler %s plate", new ThrowsOnToString()))
        .matches("boiler <.*> plate");
  }

  private static class ThrowsOnToString {
    @Override