fix code gen test case

Author: adrian-wang

sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/ExpressionEvaluationSuite.scala

@@ -46,13 +46,13 @@ class ExpressionEvaluationSuite extends FunSuite {
     checkEvaluation(BitwiseNot(1), -2)
     assert(BitwiseNot(1).dataType === IntegerType)
     assert(BitwiseNot(1).eval(EmptyRow).isInstanceOf[Int])
-    checkEvaluation(BitwiseNot(1.toLong), -2)
+    checkEvaluation(BitwiseNot(1.toLong), -2.toLong)
     assert(BitwiseNot(1.toLong).dataType === LongType)
     assert(BitwiseNot(1.toLong).eval(EmptyRow).isInstanceOf[Long])
-    checkEvaluation(BitwiseNot(1.toShort), -2)
+    checkEvaluation(BitwiseNot(1.toShort), -2.toShort)
     assert(BitwiseNot(1.toShort).dataType === ShortType)
     assert(BitwiseNot(1.toShort).eval(EmptyRow).isInstanceOf[Short])
-    checkEvaluation(BitwiseNot(1.toByte), -2)
+    checkEvaluation(BitwiseNot(1.toByte), -2.toByte)
     assert(BitwiseNot(1.toByte).dataType === ByteType)
     assert(BitwiseNot(1.toByte).eval(EmptyRow).isInstanceOf[Byte])
   }