Add rebinding test (#654)

1 files changed, 27 insertions, 0 deletions

diff --git a/src/test/scala/chiselTests/RebindingSpec.scala b/src/test/scala/chiselTests/RebindingSpec.scala
new file mode 100644
index 00000000..dddf26b6
--- /dev/null
+++ b/src/test/scala/chiselTests/RebindingSpec.scala
@@ -0,0 +1,27 @@
+// See LICENSE for license details.
+
+package chiselTests
+
+import chisel3._
+
+class RebindingSpec extends ChiselFlatSpec {
+  "Rebinding a literal" should "fail" in {
+    a [chisel3.core.Binding.BindingException] should be thrownBy {
+      elaborate { new Module {
+        val io = IO(new Bundle {
+          val a = 4.U
+        })
+      } }
+    }
+  }
+
+  "Rebinding a hardware type" should "fail" in {
+    a [chisel3.core.Binding.BindingException] should be thrownBy {
+      elaborate { new Module {
+        val io = IO(new Bundle {
+          val a = Reg(UInt(32.W))
+        })
+      } }
+    }
+  }
+}