From 8a73362bb6fe87817a1867cc2482c1841f95c077 Mon Sep 17 00:00:00 2001
From: Jack Koenig
Date: Wed, 20 Jan 2021 18:55:16 -0800
Subject: Remove val io

Chisel projects no longer need -Xsource:2.11 when compiling with Scala
2.12.

Autowrapping of "val io" for compatibility mode Modules is now
implemented using reflection instead of calling the virtual method.

Also move Chisel.BlackBox to new chisel3.internal.LegacyBlackBox
---
 src/test/scala/chiselTests/CompatibilitySpec.scala | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'src/test/scala/chiselTests/CompatibilitySpec.scala')

diff --git a/src/test/scala/chiselTests/CompatibilitySpec.scala b/src/test/scala/chiselTests/CompatibilitySpec.scala
index 50213d4d..6a77c821 100644
--- a/src/test/scala/chiselTests/CompatibilitySpec.scala
+++ b/src/test/scala/chiselTests/CompatibilitySpec.scala
@@ -239,6 +239,20 @@ class CompatibiltySpec extends ChiselFlatSpec with ScalaCheckDrivenPropertyCheck
     ChiselStage.elaborate { new RequireIOWrapModule() }
   }
 
+  "A Module without val io" should "throw an exception" in {
+    class ModuleWithoutValIO extends Module {
+      val foo = new Bundle {
+        val in = UInt(width = 32).asInput
+        val out = Bool().asOutput
+      }
+      foo.out := foo.in(1)
+    }
+    val e = intercept[Exception](
+      ChiselStage.elaborate { new ModuleWithoutValIO }
+    )
+    e.getMessage should include("must have a 'val io' Bundle")
+  }
+
   "A Module connecting output as source to input as sink when compiled with the Chisel compatibility package" should "not throw an exception" in {
 
     class SimpleModule extends Module {
-- 
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