Test for model instantiation

tests/pars/test_model_instantiator.py

@@ -21,3 +21,21 @@ class TestModelInstantiator:
         point = {p: stormpy.RationalRF("0.5") for p in parameters}
         instantiated_model2 = instantiator.instantiate(point)
         assert "0.5" in str(instantiated_model2.transition_matrix[1])
+
+    def test_sample_pdtmc(self):
+        program = stormpy.parse_prism_program(get_example_path("pdtmc", "brp16_2.pm"))
+        formulas = stormpy.parse_properties_for_prism_program("P=? [F \"error\"]", program)
+        model = stormpy.build_parametric_model(program, formulas)
+
+        parameters = model.collect_probability_parameters()
+        instantiator = stormpy.pars.PDtmcInstantiator(model)
+
+        point = {p: stormpy.RationalRF("0.4") for p in parameters}
+        instantiated_model = instantiator.instantiate(point)
+        assert instantiated_model.nr_states == model.nr_states
+        assert not instantiated_model.has_parameters
+        assert "0.4" in str(instantiated_model.transition_matrix[1])
+
+        point = {p: stormpy.RationalRF("0.5") for p in parameters}
+        instantiated_model2 = instantiator.instantiate(point)
+        assert "0.5" in str(instantiated_model2.transition_matrix[1])