1 files changed, 20 insertions, 0 deletions
diff --git a/Lib/distutils/tests/test_core.py b/Lib/distutils/tests/test_core.py
index 7f021dc..b5f391f 100644
--- a/Lib/distutils/tests/test_core.py
+++ b/Lib/distutils/tests/test_core.py
@@ -6,6 +6,7 @@ import os
 import shutil
 import sys
 import test.support
+from test.support import captured_stdout
 import unittest
 
 
@@ -33,10 +34,12 @@ class CoreTestCase(unittest.TestCase):
     def setUp(self):
         self.old_stdout = sys.stdout
         self.cleanup_testfn()
+        self.old_argv = sys.argv[:]
 
     def tearDown(self):
         sys.stdout = self.old_stdout
         self.cleanup_testfn()
+        sys.argv = self.old_argv[:]
 
     def cleanup_testfn(self):
         path = test.support.TESTFN
@@ -73,6 +76,23 @@ class CoreTestCase(unittest.TestCase):
             output = output[:-1]
         self.assertEqual(cwd, output)
 
+    def test_debug_mode(self):
+        # this covers the code called when DEBUG is set
+        sys.argv = ['setup.py', '--name']
+        with captured_stdout() as stdout:
+            distutils.core.setup(name='bar')
+        stdout.seek(0)
+        self.assertEquals(stdout.read(), 'bar\n')
+
+        distutils.core.DEBUG = True
+        try:
+            with captured_stdout() as stdout:
+                distutils.core.setup(name='bar')
+        finally:
+            distutils.core.DEBUG = False
+        stdout.seek(0)
+        wanted = "options (after parsing config files):\n"
+        self.assertEquals(stdout.readlines()[0], wanted)
 
 def test_suite():
     return unittest.makeSuite(CoreTestCase)