fix test

Author: cloud-fan

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala

@@ -466,7 +466,7 @@ abstract class CastBase extends UnaryExpression with TimeZoneAwareExpression wit
   // IntervalConverter
   private[this] def castToInterval(from: DataType): Any => Any = from match {
     case StringType =>
-      buildCast[UTF8String](_, s => IntervalUtils.fromString(s.toString))
+      buildCast[UTF8String](_, s => IntervalUtils.safeFromString(s.toString))
   }
 
   // LongConverter
@@ -1215,7 +1215,7 @@ abstract class CastBase extends UnaryExpression with TimeZoneAwareExpression wit
     case StringType =>
       val util = IntervalUtils.getClass.getCanonicalName.stripSuffix("$")
       (c, evPrim, evNull) =>
-        code"""$evPrim = $util.fromString($c.toString());
+        code"""$evPrim = $util.safeFromString($c.toString());
            if(${evPrim} == null) {
              ${evNull} = true;
            }

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/IntervalUtils.scala

@@ -103,4 +103,12 @@ object IntervalUtils {
         throw ex
     }
   }
+
+  def safeFromString(str: String): CalendarInterval = {
+    try {
+      fromString(str)
+    } catch {
+      case _: IllegalArgumentException => null
+    }
+  }
 }