first working test for model instantiator

tests/storage/test_model_instantiator.py

@@ -0,0 +1,21 @@
+import pycarl
+import stormpy
+import stormpy.logic
+from helpers.helper import get_example_path
+
+class TestModel:
+    def test_instantiate_dtmc(self):
+        program = stormpy.parse_prism_program(get_example_path("pdtmc", "brp16_2.pm"))
+        formulas = stormpy.parse_formulas_for_prism_program("P=? [ F s=5 ]", program)
+        model = stormpy.build_parametric_model(program, formulas[0])
+        parameters = model.collect_probability_parameters()
+        instantiator = stormpy.storage.PdtmcInstantiator(model)
+        point = dict()
+        for p in parameters:
+            point[p] = 0.4
+        instantiated_model = instantiator.instantiate(point)
+        assert instantiated_model.nr_states == model.nr_states
+        assert not instantiated_model.has_parameters
+        for p in parameters:
+            point[p] = 0.5
+        instatiated_model2 = instantiator.instantiate(point)