--- a/_test_dataset.py	Wed Apr 09 18:27:13 2008 -0400
+++ b/_test_dataset.py	Fri Apr 11 11:14:54 2008 -0400
@@ -78,6 +78,19 @@
         for i, x in enumerate(a.minibatches(["x"], minibatch_size=3, n_batches=6)):
             self.failUnless(numpy.all( x == arr2[i*3:i*3+3,0:2]))
     
+
+class T_renamingdataset(unittest.TestCase):
+    def setUp(self):
+        numpy.random.seed(123456)
+
+
+    def test_hasfield(self):
+        n = numpy.random.rand(3,8)
+        a=ArrayDataSet(data=n,fields={"x":slice(2),"y":slice(1,4),"z":slice(4,6)})
+        b=a.rename({'xx':'x','zz':'z'})
+        self.failUnless(b.hasFields('xx','zz') and not b.hasFields('x') and not b.hasFields('y'))
+
+
 if __name__ == '__main__':
     unittest.main()