Add error message for <> of Vec and Seq of different lengths (#739)

Fixes #482

1 files changed, 22 insertions, 0 deletions

diff --git a/src/test/scala/chiselTests/Vec.scala b/src/test/scala/chiselTests/Vec.scala
index 1c5157b5..08b9cdf5 100644
--- a/src/test/scala/chiselTests/Vec.scala
+++ b/src/test/scala/chiselTests/Vec.scala
@@ -252,4 +252,26 @@ class VecSpec extends ChiselPropSpec {
   property("Dynamic indexing of a Vec of Module IOs should work") {
     assertTesterPasses{ new ModuleIODynamicIndexTester(4) }
   }
+
+  property("It should be possible to bulk connect a Vec and a Seq") {
+    elaborate(new Module {
+      val io = IO(new Bundle {
+        val out = Output(Vec(4, UInt(8.W)))
+      })
+      val seq = Seq.fill(4)(0.U)
+      io.out <> seq
+    })
+  }
+
+  property("Bulk connecting a Vec and Seq of different sizes should report a ChiselException") {
+    a [ChiselException] should be thrownBy {
+      elaborate(new Module {
+        val io = IO(new Bundle {
+          val out = Output(Vec(4, UInt(8.W)))
+        })
+        val seq = Seq.fill(5)(0.U)
+        io.out <> seq
+      })
+    }
+  }
 }