Fixed #29: Parsers: Implement parsing memoization

Fixed #77 : Parser: ShortTermMemoryParser should be called separately
Fixed #78 : Remove VariableNode usage
Fixed #79 : ConceptManager: Implement compile caching
Fixed #80 : SheerkaExecute : parsers_key is not correctly computed
Fixed #81 : ValidateConceptEvaluator : Validate concept's where and pre clauses right after the parsing
Fixed #82 : SheerkaIsAManager: isa() failed when the set as a body
Fixed #83 : ValidateConceptEvaluator : Support BNF and SYA Concepts
Fixed #84 : ExpressionParser: Implement the parser as a standard parser
Fixed #85 : Services: Give order to services
Fixed #86 : cannot manage smart_get_attr(the short, color)

tests/sheerkarete/test_conditions.py

@@ -1,3 +1,5 @@
+import pytest
+
 from sheerkarete.common import WME, V
 from sheerkarete.conditions import NotEqualsCondition, AndConditions, Condition, NegatedCondition, \
     NegatedConjunctiveConditions, FilterCondition, BindCondition
@@ -27,6 +29,31 @@ class TestReteConditions(TestUsingMemoryBasedSheerka):
         network.remove_wme(wme)
         assert len(list(network.matches)) == 0
 
+    @pytest.mark.skip("Comparison between variables need to be implemented.")
+    def test_i_can_test_condition_between_variables(self):
+        network = ReteNetwork()
+        conditions = [Condition(V("x"), "__name__", "x"),
+                      Condition(V("y"), "__name__", "y"),
+                      Condition(V("x"), "__self__", V("y"))],
+        rule = RuleForTestingRete(AndConditions(conditions))
+        network.add_rule(rule)
+
+        assert len(list(network.matches)) == 0
+
+        wme_x = WME("x", "__self__", "10")
+        wme_y = WME("y", "__self__", "10")
+        network.add_wme(wme_x)
+        network.add_wme(wme_y)
+
+        matches = list(network.matches)
+        assert len(matches) == 1
+        assert matches[0].pnode.rules == [rule]
+        assert matches[0].token.wmes == [wme_x, wme_y]
+
+        # remove wme
+        network.remove_wme(wme_x)
+        assert len(list(network.matches)) == 0
+
     def test_i_can_manage_not_equals_condition(self):
         network = ReteNetwork()