Fixed #18 : Parsing and evaluating Python

tests/evaluators/test_PythonParser.py

@@ -0,0 +1,75 @@
+import pytest
+
+from base import BaseTest
+from core.BuiltinConcepts import BuiltinConcepts
+from core.error import ErrorContext
+from evaluators.PythonParser import PythonParser
+from helpers import _rv, _rvf
+from parsers.ParserInput import ParserInput
+
+
+class TestPythonParser(BaseTest):
+    @pytest.fixture()
+    def evaluator(self, sheerka):
+        return sheerka.evaluators[PythonParser.NAME]
+
+    def test_i_can_match(self, sheerka, context, evaluator):
+        ret_val = _rv(sheerka.newn(BuiltinConcepts.PARSER_INPUT, pi=ParserInput("a command")))
+        assert evaluator.matches(context, ret_val).status is True
+
+        ret_val = _rv(sheerka.newn(BuiltinConcepts.UNKNOWN_CONCEPT))  # it responds to USER_INPUT only
+        assert evaluator.matches(context, ret_val).status is False
+
+        ret_val = _rvf(sheerka.newn(BuiltinConcepts.PARSER_INPUT, pi=ParserInput("a command")))  # status should be true
+        assert evaluator.matches(context, ret_val).status is False
+
+    @pytest.mark.parametrize("text", [
+        "1 + 1",
+        "a = 20"
+    ])
+    def test_i_can_parse_python(self, sheerka, context, evaluator, text):
+        pi = ParserInput(text)
+        pi.init()
+        start = _rv(sheerka.newn(BuiltinConcepts.PARSER_INPUT, pi=pi))
+
+        res = evaluator.eval(context, None, start)
+
+        assert res.eaten == [start]
+        assert len(res.new) == 1
+        ret_val = res.new[0]
+        assert ret_val.status is True
+        assert sheerka.isinstance(ret_val.value, BuiltinConcepts.PYTHON_CODE)
+        assert ret_val.parents == [start]
+
+    def test_invalid_python_are_rejected(self, sheerka, context, evaluator):
+        text = "1 + "
+        pi = ParserInput(text)
+        pi.init()
+        start = _rv(sheerka.newn(BuiltinConcepts.PARSER_INPUT, pi=pi))
+
+        res = evaluator.eval(context, None, start)
+
+        assert res.eaten == []
+        assert len(res.new) == 1
+        ret_val = res.new[0]
+        assert ret_val.status is False
+        assert isinstance(ret_val.value, ErrorContext)
+        assert ret_val.parents == [start]
+
+    def test_i_can_detect_concepts(self, sheerka, context, evaluator):
+        pi = ParserInput("c:one: + c:two:")
+        pi.init()
+        start = _rv(sheerka.newn(BuiltinConcepts.PARSER_INPUT, pi=pi))
+
+        res = evaluator.eval(context, None, start)
+
+        assert res.eaten == [start]
+        assert len(res.new) == 1
+        ret_val = res.new[0]
+        assert ret_val.status is True
+        assert sheerka.isinstance(ret_val.value, BuiltinConcepts.PYTHON_CODE)
+        assert ret_val.parents == [start]
+        assert len(ret_val.value.pf.namespace) == 2
+        assert ret_val.value.pf.namespace["__C__KEY_one__ID_00None00__C__"].value == ("one", None)
+        assert ret_val.value.pf.namespace["__C__KEY_two__ID_00None00__C__"].value == ("two", None)
+