fail("should fail for bad Unicode");
    } catch (IllegalArgumentException e) {
      // Pass
    }
  }

  public void testSafeRange() throws IOException {
    // Basic escaping of unsafe chars (wrap them in {,}'s)
    UnicodeEscaper wrappingEscaper =
        new ArrayBasedUnicodeEscaper(NO_REPLACEMENTS, 'A', 'Z', null) {
          @Override
          protected char[] escapeUnsafe(int c) {

      fail("should fail for bad Unicode");
    } catch (IllegalArgumentException e) {
      // Pass
    }
  }

  public void testSafeRange() throws IOException {
    // Basic escaping of unsafe chars (wrap them in {,}'s)
    UnicodeEscaper wrappingEscaper =
        new ArrayBasedUnicodeEscaper(NO_REPLACEMENTS, 'A', 'Z', null) {
          @Override
          protected char[] escapeUnsafe(int c) {