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diff --git a/tests/test_validate.py b/tests/test_validate.py
index bffb0dc..c7d57d3 100644
--- a/tests/test_validate.py
+++ b/tests/test_validate.py
@@ -2,7 +2,7 @@
 
 from configobj import ConfigObj
 import pytest
-from validate import Validator, VdtValueTooSmallError
+from validate import Validator, VdtValueTooSmallError, dottedQuadToNum
 
 
 class TestBasic(object):
@@ -161,3 +161,26 @@ class TestBasic(object):
                     'test3': 3,
                     'test4': 6.0
         }}}
+
+
+class TestDottedQuadToNum(object):
+
+    def test_stripped(self):
+        assert dottedQuadToNum('192.0.2.0') == 3221225984
+        assert dottedQuadToNum('192.0.2.1 ') == 3221225985
+        assert dottedQuadToNum(' 192.0.2.2') == 3221225986
+        assert dottedQuadToNum('\t\t192.0.2.3\n') == 3221225987
+        with pytest.raises(ValueError) as excinfo:
+            dottedQuadToNum('192. 0. 2. 4')
+        assert str(excinfo.value) == 'Not a good dotted-quad IP: 192. 0. 2. 4'
+
+    def test_boundaries(self):
+        assert dottedQuadToNum('0.0.0.0') == 0
+        assert dottedQuadToNum('255.255.255.255') == 4294967295
+        with pytest.raises(ValueError) as excinfo:
+            dottedQuadToNum('255.255.255.256')
+        assert str(excinfo.value) == (
+            'Not a good dotted-quad IP: 255.255.255.256')
+        with pytest.raises(ValueError) as excinfo:
+            dottedQuadToNum('-1')
+        assert str(excinfo.value) == 'Not a good dotted-quad IP: -1'