* @param c the character to escape
   */
  public static void assertEscaping(CharEscaper escaper, String expected, char c) {

    String escaped = computeReplacement(escaper, c);
    Assert.assertNotNull(escaped);
    Assert.assertEquals(expected, escaped);
  }

  /**
   * Asserts that a Unicode escaper escapes the given code point into the expected string.
   *
   * @param escaper the non-null escaper to test

   * @param c the character to escape
   */
  public static void assertEscaping(CharEscaper escaper, String expected, char c) {

    String escaped = computeReplacement(escaper, c);
    Assert.assertNotNull(escaped);
    Assert.assertEquals(expected, escaped);
  }

  /**
   * Asserts that a Unicode escaper escapes the given code point into the expected string.
   *
   * @param escaper the non-null escaper to test