#1477 skip sens test in base_solver if klu not installed

Author: martinjrobins

tests/unit/test_solvers/test_base_solver.py

@@ -325,6 +325,7 @@ def test_extrapolation_warnings(self):
         with self.assertWarns(pybamm.SolverWarning):
             solver.solve(model, t_eval=[0, 1])
 
+    @unittest.skipIf(not pybamm.have_idaklu(), "idaklu solver is not installed")
     def test_sensitivities(self):
 
         def exact_diff_a(y, a, b):