tests: fix gradient in function.py.

Benjamin Chrétien · Benjamin Chrétien · commit c56ecd878bf2 · 2015-01-15T11:42:23.000+01:00
diff --git a/tests/function.py b/tests/function.py
@@ -15,7 +15,7 @@ def impl_compute (self, result, x):
         result[0] = x[0] * x[0]
 
     def impl_gradient (self, result, x):
-        result[0] = 2.
+        result[0] = 2. * x[0]
 
 
 class TestFunctionPy(unittest.TestCase):
