- add simple test of IntervalRange helpers

  - getLowestPossibleValue
  - getHighestPossibleValue
  - getPossibleValues

1 files changed, 17 insertions, 0 deletions

diff --git a/src/test/scala/chiselTests/IntervalRangeSpec.scala b/src/test/scala/chiselTests/IntervalRangeSpec.scala
index c152e72d..f1daa228 100644
--- a/src/test/scala/chiselTests/IntervalRangeSpec.scala
+++ b/src/test/scala/chiselTests/IntervalRangeSpec.scala
@@ -216,6 +216,23 @@ class IntervalRangeSpec extends FreeSpec with Matchers {
         checkRange(range"[-7.875,7.875].3".setPrecision(1.BP), C(-8.0), C(7.5), 1.BP)
       }
     }
+
+    "get possible values should return all values from high to low" in {
+      var range = range"[0,4]"
+      range.getLowestPossibleValue should be (Some(0))
+      range.getHighestPossibleValue should be (Some(4))
+      range.getPossibleValues should be (Seq(0, 1, 2, 3, 4))
+
+      range = range"(0,4)"
+      range.getLowestPossibleValue should be (Some(1))
+      range.getHighestPossibleValue should be (Some(3))
+      range.getPossibleValues should be (Seq(1, 2, 3))
+
+      range = range"(-1,4).1"
+      range.getLowestPossibleValue should be (Some(-0.5))
+      range.getHighestPossibleValue should be (Some(3.5))
+      range.getPossibleValues should be (Seq(-0.5, 0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5))
+    }
   }
 
 }