You must now use 'eval' to get the body of a concept

tests/test_EvalEvaluator.py

@@ -0,0 +1,59 @@
+import pytest
+
+from core.builtin_concepts import ReturnValueConcept, BuiltinConcepts
+from core.concept import Concept
+from core.sheerka import Sheerka, ExecutionContext
+from evaluators.EvalEvaluator import EvalEvaluator
+from sdp.sheerkaDataProvider import Event
+
+
+def get_context():
+    sheerka = Sheerka(skip_builtins_in_db=True)
+    sheerka.initialize("mem://")
+    return ExecutionContext("test", Event(), sheerka)
+
+
+def r(value, status=True):
+    return ReturnValueConcept("some_name", status, value)
+
+
+eval_requested = ReturnValueConcept("some_name", True, Concept(key=BuiltinConcepts.CONCEPT_EVAL_REQUESTED))
+
+
+def test_i_can_match_and_eval():
+    context = get_context()
+
+    to_eval1 = ReturnValueConcept("some_name", True, Concept(name="2", body="to eval"))
+    to_eval2 = ReturnValueConcept("some_name", True, Concept(name="3", body="also to eval"))
+
+    return_values = [
+        ReturnValueConcept("some_name", True, "not to eval"),
+        ReturnValueConcept("some_name", True, Concept(name="not to eval")),
+        ReturnValueConcept("some_name", False, Concept(name="1", body="not to eval")),
+        to_eval1,
+        to_eval2,
+        eval_requested
+    ]
+
+    evaluator = EvalEvaluator()
+    assert evaluator.matches(context, return_values)
+
+    evaluated = evaluator.eval(context, return_values)
+    assert len(evaluated) == 2
+    assert evaluated[0].value == to_eval1.body.body
+    assert evaluated[0].parents == [to_eval1, eval_requested]
+
+    assert evaluated[1].value == to_eval2.body.body
+    assert evaluated[1].parents == [to_eval2, eval_requested]
+
+
+@pytest.mark.parametrize("return_values, expected", [
+    ([r(Concept("foo", body="bar")), eval_requested], True),
+    ([r(Concept("status is false", body="bar"), False), eval_requested], False),
+    ([r("string_value"), eval_requested], False),
+    ([r(Concept("no body")), eval_requested], False),
+    ([r(Concept("eval requested missing", body="bar"))], False),
+])
+def test_i_cannot_match_if_eval_request_is_not_present(return_values, expected):
+    context = get_context()
+    assert EvalEvaluator().matches(context, return_values) == expected