add cumsum and cumprod test in theano.tensor.test.test_basic.py

theano/tensor/tests/test_basic.py

@@ -6736,6 +6736,17 @@ class TestTensorInstanceMethods(unittest.TestCase):
         # Test equivalent advanced indexing
         assert_array_equal(X[:,indices].eval({X: x}), x[:,indices])
 
+    def test_cumsum(self):
+        X, _ = self.vars
+        x, _ = self.vals
+        assert_array_equal(X.cumsum().eval({X: x}), x.cumsum())
+
+    def test_cumprod(self):
+        X, _ = self.vars
+        x, _ = self.vals
+        assert_array_equal(X.cumprod().eval({X: x}), x.cumprod())
+
+
 def test_norm():
     x = theano.tensor.vector('x')
     n = x.norm(2)