add required methods to mock InstrumentModel (#46)

Author: ajjackson

tests/unit_tests/test_model_base.py

@@ -11,6 +11,15 @@ def get_characteristics(self, *args):
     def __call__(self, *args, **kwargs):
         return
 
+    def get_kernel(self, points, *meshes):
+        return
+
+    def get_peak(self, points, *meshes):
+        return
+
+    def broaden(self, points, data, *meshes):
+        return
+
 
 class MockModelData:
     function = ''
@@ -116,4 +125,4 @@ def test_validate_settings_restriction_set_raises(model):
     with pytest.raises(InvalidInputError,
                        match=r'The provided value for the \"setting\" setting \(500\) must be one '
                              r'of the following values: {.+}'):
-        model._validate_settings(model_data, {'setting': 500})
+        model._validate_settings(model_data, {'setting': 500})