From b3d4654935db38990d6cc4976eed7ddc14cf60fd Mon Sep 17 00:00:00 2001
From: Albert Magyar
Date: Mon, 9 Mar 2020 20:00:27 -0700
Subject: Check for module name conflicts

* Fixes #1436
---
 src/test/scala/firrtlTests/CheckSpec.scala | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'src/test')

diff --git a/src/test/scala/firrtlTests/CheckSpec.scala b/src/test/scala/firrtlTests/CheckSpec.scala
index 9a384d21..f03b6611 100644
--- a/src/test/scala/firrtlTests/CheckSpec.scala
+++ b/src/test/scala/firrtlTests/CheckSpec.scala
@@ -307,6 +307,32 @@ class CheckSpec extends FlatSpec with Matchers {
       }
     }
   }
+
+  s"Duplicate module names" should "throw an exception" in {
+    val input =
+      s"""|circuit bar :
+          |  module bar :
+          |    input i : UInt<8>
+          |    output o : UInt<8>
+          |    o <= i
+          |  module dup :
+          |    input i : UInt<8>
+          |    output o : UInt<8>
+          |    o <= i
+          |  module dup :
+          |    input i : UInt<8>
+          |    output o : UInt<8>
+          |    o <= not(i)
+          |""".stripMargin
+    assertThrows[CheckHighForm.ModuleNameNotUniqueException] {
+      try {
+        checkHighInput(input)
+      } catch {
+        case e: firrtl.passes.PassExceptions => throw e.exceptions.head
+      }
+    }
+  }
+
 }
 
 object CheckSpec {
-- 
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