--- a/tests/config.py	Sat Mar 10 19:00:12 2012 +0100
+++ b/tests/config.py	Sat Mar 10 19:01:31 2012 +0100
@@ -166,3 +166,22 @@
         c2.dburl = "dburl2"
         self.assertFalse(c2.same(c1))
         self.assertFalse(c1.same(c2))
+
+    def testSampleConf(self):
+        c1 = config.Config("1")
+        self.assertEqual(c1.sampleConf(),["[1]",
+            "# Connection URL to database",
+            "dburl = ","",
+            "# Port under that twisted is running",
+            "port = ",""])
+
+    def testsampleConfDefault(self):
+        c1 = config.Config("1")
+        c1.options["port"].default = 12345
+        c1.options["port"].must = False
+        c1.options["dburl"].default = True
+        self.assertEqual(c1.sampleConf(),["[1]",
+            "# Connection URL to database",
+            "dburl = True","",
+            "# Port under that twisted is running",
+            "# port = 12345",""])