Add a regression test for authentication.
diff --git a/.gitignore b/.gitignore
index 8447db2..f63c153 100644
--- a/.gitignore
+++ b/.gitignore
@@ -51,6 +51,7 @@
 stamp-h1
 tdfx.kld
 via.kld
+tests/auth
 tests/dristat
 tests/drmstat
 tests/getclient