Added test for Concatenate Op (gradient test not enable yet since the gradient…

_test_tensor.py

@@ -956,6 +956,25 @@ class T_Stack(unittest.TestCase):
         self.failUnless(numpy.all(gval[0] == 1.0))
         self.failUnless(numpy.all(gval[1] == 1.0))
 
+class T_Concatenate(unittest.TestCase):
+    def test_concatenate(self):
+        a_n = numpy.array([[1, 2, 3], [4, 5, 6]])
+        b_n = numpy.array([[7], [8]])
+        s = concatenate((as_tensor(a_n), as_tensor(b_n)), axis = 1)
+        c = numpy.concatenate((a_n, b_n), axis = 1)
+        self.failUnless((eval_outputs([s]) == c).all())
+
+    def test_concatenate_grad(self):
+        return  # Not working yet
+        a_n = numpy.array([[1, 2, 3], [4, 5, 6]])
+        b_n = numpy.array([[7], [8]])
+        a = as_tensor(a_n)
+        b = as_tensor(b_n)
+        s = concatenate((a, b), axis = 1)
+        ga, gb = grad(sum(s), [a, b])
+        gval = eval_outputs([ga, gb])
+        self.failUnless(numpy.all(gval[0] == 1.0))
+        self.failUnless(numpy.all(gval[1] == 1.0))
 
 class _test_comparison(unittest.TestCase):
     def test_gt(self):
@@ -1751,7 +1770,7 @@ if __name__ == '__main__':
     if 1:
         unittest.main()
     else:
-        testcase =  t_dot
+        testcase =  T_Concatenate
 
         suite = unittest.TestLoader()
         suite = suite.loadTestsFromTestCase(testcase)