From ec02d9336800f3d837ac69e173533d4c0b264eb4 Mon Sep 17 00:00:00 2001
From: Jack Koenig
Date: Thu, 29 Jun 2017 22:05:11 -0700
Subject: Add test for padding constant connections to wires in ConstProp

---
 .../scala/firrtlTests/ConstantPropagationTests.scala    | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'src/test')

diff --git a/src/test/scala/firrtlTests/ConstantPropagationTests.scala b/src/test/scala/firrtlTests/ConstantPropagationTests.scala
index 8f09ac9e..985d9956 100644
--- a/src/test/scala/firrtlTests/ConstantPropagationTests.scala
+++ b/src/test/scala/firrtlTests/ConstantPropagationTests.scala
@@ -514,4 +514,21 @@ class ConstantPropagationIntegrationSpec extends LowTransformSpec {
           |    z <= UInt<1>(0)""".stripMargin
     execute(input, check, Seq.empty)
   }
+
+  it should "pad constant connections to wires when propagating" in {
+      val input =
+        """circuit Top :
+          |  module Top :
+          |    output z : UInt<16>
+          |    wire w : { a : UInt<8>, b : UInt<8> }
+          |    w.a <= UInt<2>("h3")
+          |    w.b <= UInt<2>("h3")
+          |    z <= cat(w.a, w.b)""".stripMargin
+      val check =
+        """circuit Top :
+          |  module Top :
+          |    output z : UInt<16>
+          |    z <= UInt<16>("h303")""".stripMargin
+    execute(input, check, Seq.empty)
+  }
 }
-- 
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