1 files changed, 23 insertions, 1 deletions
diff --git a/src/test/scala/chiselTests/DriverSpec.scala b/src/test/scala/chiselTests/DriverSpec.scala
index 8fc58e21..75ab93ae 100644
--- a/src/test/scala/chiselTests/DriverSpec.scala
+++ b/src/test/scala/chiselTests/DriverSpec.scala
@@ -17,7 +17,13 @@ class DummyModule extends Module {
   io.out := io.in
 }
 
-class DriverSpec extends FreeSpec with Matchers {
+class TypeErrorModule extends chisel3.experimental.MultiIOModule {
+  val in = IO(Input(UInt(1.W)))
+  val out = IO(Output(SInt(1.W)))
+  out := in
+}
+
+class DriverSpec extends FreeSpec with Matchers with chiselTests.Utils {
   "Driver's execute methods are used to run chisel and firrtl" - {
     "options can be picked up from comand line with no args" in {
       // NOTE: Since we don't provide any arguments (notably, "--target-dir"),
@@ -73,5 +79,21 @@ class DriverSpec extends FreeSpec with Matchers {
       dummyOutput.exists() should be(true)
       dummyOutput.delete()
     }
+
+    "user errors show a trimmed stack trace" in {
+      val targetDir = "test_run_dir"
+      val args = Array("--compiler", "low", "--target-dir", targetDir)
+
+      val (stdout, stderr, result) = grabStdOutErr { Driver.execute(args, () => new TypeErrorModule) }
+
+      info("stdout shows a trimmed stack trace")
+      stdout should include ("Stack trace trimmed to user code only")
+
+      info("stdout does not include FIRRTL information")
+      stdout should not include ("firrtl.")
+
+      info("Driver returned a ChiselExecutionFailure")
+      result shouldBe a [ChiselExecutionFailure]
+    }
   }
 }