[vala] tests: Improve test for bug 620673

[JÃrg Billeter <juergbi src gnome org>]

commit 11cc71a31783718268e92add3e5f2cebe328a206
Author: JÃrg Billeter <j bitron ch>
Date:   Wed Aug 1 11:23:23 2012 +0200

    tests: Improve test for bug 620673

 tests/methods/bug620673.vala |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/tests/methods/bug620673.vala b/tests/methods/bug620673.vala
index a305a3e..fd6158b 100644
--- a/tests/methods/bug620673.vala
+++ b/tests/methods/bug620673.vala
@@ -1,5 +1,10 @@
 void foo (int bar, ...) throws Error {
+	assert (bar == 42);
+	var args = va_list ();
+	int arg = args.arg ();
+	assert (arg == 23);
 }
 
 void main () {
-}
\ No newline at end of file
+	foo (42, 23);
+}