andygrove commented on code in PR #1086:
URL: https://github.com/apache/datafusion-comet/pull/1086#discussion_r1843086541
##########
spark/src/test/scala/org/apache/comet/CometCastSuite.scala:
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@@ -895,6 +895,18 @@ class CometCastSuite extends CometTestBase with
AdaptiveSparkPlanHelper {
}
}
+ test("cast between decimals with different precision and scale") {
Review Comment:
It's great to see that some basic tests now pass. I assume there must have
been improvements in DataFusion since we started this project.
I'd like to see the tests cover more scenarios, such as:
- Casting from smaller scale to larger scale e.g. (10, 1) to (10, 4)
- Tests for edge cases such as negative scale and zero scale
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