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-rw-r--r--src/test/scala/chiselTests/util/BitPatSpec.scala4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/test/scala/chiselTests/util/BitPatSpec.scala b/src/test/scala/chiselTests/util/BitPatSpec.scala
index a6c0acf7..ca8dd85c 100644
--- a/src/test/scala/chiselTests/util/BitPatSpec.scala
+++ b/src/test/scala/chiselTests/util/BitPatSpec.scala
@@ -14,4 +14,8 @@ class BitPatSpec extends AnyFlatSpec with Matchers {
val testPattern = "0" * 32 + "1" * 32 + "?" * 32 + "?01" * 32
BitPat("b" + testPattern).toString should be (s"BitPat($testPattern)")
}
+
+ it should "not fail if BitPat width is 0" in {
+ intercept[IllegalArgumentException]{BitPat("b")}
+ }
}