added consistency checks for remaining energies

test/test_energies/consistency_check.py

@@ -58,6 +58,20 @@ class Energy_Tests(unittest.TestCase):
         energy = ift.GaussianEnergy(model)
         ift.extra.check_value_gradient_consistency(energy)
 
+    @expand(product(
+        ['Variable'],
+        [ift.GLSpace(15),
+         ift.RGSpace(64, distances=.789),
+         ift.RGSpace([32, 32], distances=.789)],
+        [4, 78, 23]
+        ))
+    def testQuadratic(self, type1, space, seed):
+        np.random.seed(seed)
+        S = ift.ScalingOperator(1., space)
+        s = [S.draw_sample() for _ in range(3)]
+        energy = ift.QuadraticEnergy(s[0], ift.makeOp(s[1]), s[2])
+        ift.extra.check_value_gradient_consistency(energy)
+
     @expand(product(
         ['Variable'],
         [ift.GLSpace(15),