Use test_run_dir for more tests. (#534)

* Use test_run_dir for more tests.

* Use official option and DRY.

Make "test_run_dir" the default for ChiselSpec.
Verify output files are created in DriverSpec tests.

1 files changed, 10 insertions, 2 deletions

diff --git a/src/test/scala/chiselTests/ChiselSpec.scala b/src/test/scala/chiselTests/ChiselSpec.scala
index 55d58d77..584f134c 100644
--- a/src/test/scala/chiselTests/ChiselSpec.scala
+++ b/src/test/scala/chiselTests/ChiselSpec.scala
@@ -9,6 +9,7 @@ import org.scalacheck._
 import chisel3._
 import chisel3.testers._
 import firrtl.{
+  CommonOptions,
   ExecutionOptionsManager,
   HasFirrtlOptions,
   FirrtlExecutionSuccess,
@@ -35,10 +36,17 @@ trait ChiselRunners extends Assertions {
     */
   def generateFirrtl(t: => Module): String = Driver.emit(() => t)
 
-  /** Compiles a Chisel Module to Verilog */
+  /** Compiles a Chisel Module to Verilog
+    * NOTE: This uses the "test_run_dir" as the default directory for generated code.
+    * @param t the generator for the module
+    * @return the Verilog code as a string.
+    */
   def compile(t: => Module): String = {
     val manager = new ExecutionOptionsManager("compile") with HasFirrtlOptions
-                                                         with HasChiselExecutionOptions
+                                                         with HasChiselExecutionOptions {
+      commonOptions = CommonOptions(targetDirName = "test_run_dir")
+    }
+
     Driver.execute(manager, () => t) match {
       case ChiselExecutionSuccess(_, _, Some(firrtlExecRes)) =>
         firrtlExecRes match {