add test to see how numpy array is handled as input for coordinates.

solventmapcreator/test/solvationcalculationtest/solvationcalculatortest.py

@@ -30,6 +30,8 @@ class SolvationCalculatorTestCase(unittest.TestCase):
         expected_array = np.array([[-1.2500649680700651]])
         actual_array = solvationcalculator.calcluate_association_energy_matrix([1.0],[1.0], 298.0, 1.0, np.array([0.5, 1.0]))
         np.testing.assert_array_almost_equal(expected_array, actual_array)
+        actual_array2 = solvationcalculator.calcluate_association_energy_matrix(np.array([1.0]),np.array([1.0]), 298.0, 1.0, np.array([0.5, 1.0]))
+        np.testing.assert_array_almost_equal(expected_array, actual_array2)
     def test_calculate_association_energy(self):
         """Test to see if expected_value is returned.
         """