andygrove commented on issue #146:
URL:
https://github.com/apache/datafusion-comet/issues/146#issuecomment-2776015004
A better test would be something like this:
```scala
test("cast LongType to TimestampType") {
// input value is interpreted as milliseconds but will be cast to
microseconds
val min = -9223372036854775L
val max = 9223372036854775L
val values = gen.generateLongs(dataSize)
.filter(x => x >= min && x <= max) ++ Seq(min, max)
castTest(withNulls(values).toDF("a"), DataTypes.TimestampType)
}
```
However the min value here is actually causing an overflow in Spark and I am
not sure why so this needs some more research.
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