Document (and fix) args format and variable expansion.

1 files changed, 1 insertions, 1 deletions

diff --git a/cmdtest b/cmdtest
index c7e616e..b4d797a 100755
--- a/cmdtest
+++ b/cmdtest
@@ -147,7 +147,7 @@ class CommandTester(cliapp.Application):
 
     def expand(self, strings):
         variables = {
-            'tempdir': self.tempdir,
+            'datadir': self.datadir,
         }
         return [s % variables for s in strings]