[libsecret] tap-gtester: Set a standard environment variable for test harness

[Stefan Walter <stefw src gnome org>]

commit 083902c18546f8b698d7125848ede411113ef177
Author: Stef Walter <stefw gnome org>
Date:   Thu Mar 6 12:50:46 2014 +0100

    tap-gtester: Set a standard environment variable for test harness
    
    Lets tests know whether they're running under an automated
    testing harness.

 build/tap-gtester |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/build/tap-gtester b/build/tap-gtester
index ff7506a..4b9dafb 100755
--- a/build/tap-gtester
+++ b/build/tap-gtester
@@ -151,6 +151,8 @@ def main(argv):
     cmd = args.command
     proc = None
 
+    os.environ['HARNESS_ACTIVE'] = '1'
+
     if format in ["auto", "gtest"]:
         list_cmd = cmd + ["-l", "--verbose"]
         proc = subprocess.Popen(list_cmd, close_fds=True, stdout=subprocess.PIPE)