Fixed #18 : Parsing and evaluating Python

tests/parsers/test_parser_input.py

@@ -1,5 +1,7 @@
+import pytest
+
 from parsers.ParserInput import ParserInput
-from parsers.tokenizer import LexerError
+from parsers.tokenizer import LexerError, TokenKind
 
 
 def test_i_can_parser_input():
@@ -12,3 +14,27 @@ def test_i_can_detect_errors():
     parser_input = ParserInput('def concept "a')
     assert parser_input.init() is False
     assert isinstance(parser_input.exception, LexerError)
+
+
+def test_can_as_text_and_track_tokens():
+    parser_input = ParserInput("execute(c:name1: if r:#id: else c:name2:)")
+    parser_input.init()
+
+    switcher = {TokenKind.CONCEPT: lambda t: f"__CONCEPT__{t.value[0]}",
+                TokenKind.RULE: lambda t: f"__RULE__{t.value[1]}"}
+    tracker = {}
+    text = parser_input.as_text(switcher, tracker)
+
+    assert text == "execute(__CONCEPT__name1 if __RULE__id else __CONCEPT__name2)"
+    assert len(tracker) == 3
+    assert tracker["__CONCEPT__name1"] == parser_input.all_tokens[2]
+    assert tracker["__RULE__id"] == parser_input.all_tokens[6]
+    assert tracker["__CONCEPT__name2"] == parser_input.all_tokens[10]
+
+
+def test_i_must_call_init_before_call_as_text():
+    parser_input = ParserInput("execute(c:name1: if r:#id: else c:name2:)")
+    with pytest.raises(Exception) as ex:
+        parser_input.as_text()
+
+    assert ex.value.args[0] == "You must call init() first !"