Fixed error when desc() returns multiple results

tests/core/test_SheerkaRuleManager.py

@@ -7,7 +7,7 @@ from core.global_symbols import RULE_COMPARISON_CONTEXT
 from core.rule import Rule
 from core.sheerka.services.SheerkaRuleManager import SheerkaRuleManager, FormatRuleParser, \
     FormatAstRawText, FormatAstVariable, FormatAstSequence, FormatAstFunction, \
-    FormatRuleSyntaxError, FormatAstList, UnexpectedEof, FormatAstColor, RulePredicate, FormatAstDict
+    FormatRuleSyntaxError, FormatAstList, UnexpectedEof, FormatAstColor, RulePredicate, FormatAstDict, FormatAstMulti
 from core.tokenizer import Token, TokenKind
 from parsers.BaseNodeParser import SourceCodeWithConceptNode, SourceCodeNode
 from parsers.PythonParser import PythonNode
@@ -114,7 +114,8 @@ class TestSheerkaRuleManager(TestUsingMemoryBasedSheerka):
         (r"\not_a_function(a={var})", seq([raw("not_a_function(a="), var("var"), raw(")")])),
         ("dict(var_name)", FormatAstDict("var_name")),
         ("dict(var_name, items_prop='props')", FormatAstDict("var_name", items_prop='props')),
-        ("dict(var_name, debug=True)", FormatAstDict("var_name", debug=True, prefix="{", suffix="}"))
+        ("dict(var_name, debug=True)", FormatAstDict("var_name", debug=True, prefix="{", suffix="}")),
+        ("multi(var_name)", FormatAstMulti("var_name")),
     ])
     def test_i_can_parse_format_rule(self, text, expected):
         assert FormatRuleParser(text).parse() == expected