Added SyaNodeParser (finally, after one month)

tests/evaluators/test_MultipleErrorsEvaluator.py

@@ -0,0 +1,98 @@
+import pytest
+
+from core.builtin_concepts import ReturnValueConcept, BuiltinConcepts
+from core.concept import Concept
+from evaluators.BaseEvaluator import BaseEvaluator
+from evaluators.MultipleErrorsEvaluator import MultipleErrorsEvaluator
+from parsers.BaseParser import BaseParser
+
+from tests.TestUsingMemoryBasedSheerka import TestUsingMemoryBasedSheerka
+
+
+def r(value, status=True):
+    return ReturnValueConcept(value, status, value)
+
+
+def eval_false(name):
+    return ReturnValueConcept(BaseEvaluator.PREFIX + name, False, "value")
+
+
+def eval_true(name):
+    return ReturnValueConcept(BaseEvaluator.PREFIX + name, True, "value")
+
+
+def parser_false(name):
+    return ReturnValueConcept(BaseParser.PREFIX + name, False, "value")
+
+
+def parser_true(name):
+    return ReturnValueConcept(BaseParser.PREFIX + name, True, "value")
+
+
+reduce_requested = ReturnValueConcept(
+    "some_name",
+    True,
+    Concept(name=BuiltinConcepts.REDUCE_REQUESTED,  key=BuiltinConcepts.REDUCE_REQUESTED))
+
+
+class TestMultipleErrorsEvaluator(TestUsingMemoryBasedSheerka):
+    @pytest.mark.parametrize("return_values, expected", [
+        ([eval_false("one"), reduce_requested], False),
+        ([eval_false("one"), eval_false("two"), reduce_requested], True),
+        ([eval_false("one"), eval_false("two"), eval_false("three"), reduce_requested], True),
+        ([eval_false("one"), eval_false("two"), parser_false("one"), reduce_requested], True),
+        ([eval_false("one"), eval_false("two"), parser_true("one"), reduce_requested], False),
+        ([eval_false("one"), eval_false("two"), eval_true("three"), reduce_requested], False),
+        ([eval_false("one"), eval_false("two"), r("other concept", False), reduce_requested], True),
+        ([eval_false("one"), eval_false("two"), r("other concept", True), reduce_requested], True),
+        ([eval_false("reduce not required 1"), eval_false("reduce not required 2")], False),
+    ])
+    def test_i_can_match(self, return_values, expected):
+        context = self.get_context()
+        assert MultipleErrorsEvaluator().matches(context, return_values) == expected
+
+    def test_i_can_eval(self):
+        context = self.get_context()
+
+        return_values = [
+            eval_false("one"),
+            eval_false("two"),
+            eval_false("three"),
+            parser_false("one"),
+            parser_false("two"),
+            reduce_requested
+        ]
+
+        evaluator = MultipleErrorsEvaluator()
+        evaluator.matches(context, return_values)
+        res = evaluator.eval(context, return_values)
+
+        assert not res.status
+        assert context.sheerka.isinstance(res.body, BuiltinConcepts.MULTIPLE_ERRORS)
+        assert res.body.body == [eval_false("one"), eval_false("two"), eval_false("three")]
+        assert len(res.parents) == 6
+
+    def test_unwanted_return_values_are_not_eaten(self):
+        context = self.get_context()
+
+        a_successful_concept = r("successful concept")
+        a_concept_in_error = r("concept in error", False)
+        return_values = [
+            eval_false("one"),
+            eval_false("two"),
+            parser_false("one"),
+            a_successful_concept,
+            a_concept_in_error,
+            reduce_requested
+        ]
+
+        evaluator = MultipleErrorsEvaluator()
+        evaluator.matches(context, return_values)
+        res = evaluator.eval(context, return_values)
+
+        assert not res.status
+        assert res.body.body == [eval_false("one"), eval_false("two")]
+        assert len(res.parents) == 4
+
+        assert a_successful_concept not in res.parents
+        assert a_concept_in_error not in res.parents