@Before
  public void setUp() throws Exception {
    this.constant = new ExprNodeConstantDesc(TypeInfoFactory.longTypeInfo, 0L);
    this.processor = ExprNodeTypeCheck.getExprNodeDefaultExprProcessor();
    this.errorMsg = HiveConf.StrictChecks.checkTypeSafety(new HiveConf());
    this.functionInfo = FunctionRegistry.getFunctionInfo("=");
  }
Test that a bigint comparing with a string, varchar or char is not allowed by default.
ql/src/test/org/apache/hadoop/hive/ql/parse/type/TestBigIntCompareValidation.java