private void assertEqualsIgnoreCase(String msg, String expected, String actual) {
    assertEquals(msg, expected.toLowerCase(), actual.toLowerCase());
  }
This factory creates a mocked HiveAuthorizer class. Use the mocked class to
capture the argument passed to it in the test case.
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/security/authorization/plugin/TestHiveAuthorizerCheckInvocation.java