From 2a887e582957ff231ad520099feeed4e162a37e3 Mon Sep 17 00:00:00 2001
From: Kurt Neufeld <kneufeld@burgundywall.com>
Date: Thu, 2 Jun 2016 15:52:02 -0700
Subject: allow running of a single example file test...

set environment variable TEST_EXT to desired test file extension before running
tests.

eg. TEST_EXT=md nosetests tests/test_examplefiles.py
---
 tests/test_examplefiles.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/test_examplefiles.py b/tests/test_examplefiles.py
index 924e1184..f43abf9b 100644
--- a/tests/test_examplefiles.py
+++ b/tests/test_examplefiles.py
@@ -46,6 +46,10 @@ def test_example_files():
         if not os.path.isfile(absfn):
             continue
 
+        extension = os.getenv('TEST_EXT')
+        if extension and not absfn.endswith(extension):
+            continue
+
         print(absfn)
         with open(absfn, 'rb') as f:
             code = f.read()
-- 
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