From 25ef540aa35be0c66b2170d471395e09f42fc059 Mon Sep 17 00:00:00 2001
From: Daniele Varrazzo <daniele.varrazzo@gmail.com>
Date: Sun, 23 Sep 2012 22:43:23 +0100
Subject: [PATCH] Range objects are nonzero when not empty

---
 lib/_range.py              | 3 +++
 tests/test_types_extras.py | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/lib/_range.py b/lib/_range.py
index e0535506..ad253e2f 100644
--- a/lib/_range.py
+++ b/lib/_range.py
@@ -133,6 +133,9 @@ class Range(object):
 
         return True
 
+    def __nonzero__(self):
+        return self._bounds is not None
+
     def __eq__(self, other):
         return (self._lower == other._lower
             and self._upper == other._upper
diff --git a/tests/test_types_extras.py b/tests/test_types_extras.py
index 611cca30..bc1f0366 100755
--- a/tests/test_types_extras.py
+++ b/tests/test_types_extras.py
@@ -888,6 +888,12 @@ class RangeTestCase(unittest.TestCase):
         self.assert_(20 not in r)
         self.assert_(21 not in r)
 
+    def test_nonzero(self):
+        from psycopg2.extras import Range
+        self.assert_(Range())
+        self.assert_(Range(10, 20))
+        self.assert_(not Range(empty=True))
+
     def test_eq_hash(self):
         from psycopg2.extras import Range
         def assert_equal(r1, r2):