1 files changed, 6 insertions, 1 deletions

diff --git a/cmdtest b/cmdtest
index e84602b..fc362ef 100755
--- a/cmdtest
+++ b/cmdtest
@@ -137,16 +137,21 @@ class CommandTester(cliapp.Application):
             if test.args:
                 argv.extend(self.expand(self.lines(test.args)))
 
-        stdin = self.cat(test.stdin or '/dev/null')
         stdout_name = test.path_prefix + '.stdout-actual'
         stderr_name = test.path_prefix + '.stderr-actual'
         with open(stdout_name, 'wb') as stdout:
             with open(stderr_name, 'wb') as stderr:
+                if test.stdin:
+                    stdin = open(test.stdin, 'rb')
+                else:
+                    stdin = None
                 exit, out, err = self.runcmd_unchecked(argv, 
                                                        env=self.add_to_env(),
                                                        stdin=stdin,
                                                        stdout=stdout,
                                                        stderr=stderr)
+                if stdin is not None:
+                    stdin.close()
 
         errors = []