Fixed #131 : Implement ExprToConditions

Fixed #130 : ArithmeticOperatorParser
Fixed #129 : python_wrapper : create_namespace
Fixed #128 : ExpressionParser: Cannot parse func(x) infixed concept 'xxx'

tests/core/test_ParserInput.py

@@ -1,6 +1,7 @@
 import pytest
+
 from core.sheerka.services.SheerkaExecute import ParserInput
-from core.tokenizer import Tokenizer, TokenKind
+from core.tokenizer import TokenKind, Tokenizer
 
 
 @pytest.mark.parametrize("text, start, end, expected", [
@@ -141,3 +142,37 @@ def test_i_can_get_the_token_after(text, skip_whitespace, expected):
     parser_input = ParserInput(text).reset()
     parser_input.next_token()
     assert parser_input.the_token_after(skip_whitespace).repr_value == expected
+
+
+def test_i_can_define_a_sub_part():
+    text = "Hello Koffi the great guy."
+    tokens = list(Tokenizer(text))
+
+    parser_input = ParserInput(None, tokens, 2, 6)
+    assert repr(parser_input) == "ParserInput(from_tokens'Koffi the great')"
+
+    parser_input.reset()
+    assert repr(parser_input) == "ParserInput(from_tokens'Koffi the great')"
+    res = []
+    while parser_input.next_token():
+        res.append(f"{parser_input.token.repr_value}")
+
+    assert res == ["Koffi", "the", "great"]
+    assert repr(parser_input) == "ParserInput(from_tokens'Koffi the great')"
+
+
+def test_i_can_define_parse_input_from_tokens():
+    text = "Hello Koffi the great guy."
+    tokens = list(Tokenizer(text))
+
+    parser_input = ParserInput(None, tokens)
+    assert repr(parser_input) == "ParserInput(from_tokens'Hello Koffi the great guy.')"
+
+    parser_input.reset()
+    assert repr(parser_input) == "ParserInput(from_tokens'Hello Koffi the great guy.')"
+    res = []
+    while parser_input.next_token():
+        res.append(f"{parser_input.token.repr_value}")
+
+    assert res == ["Hello", "Koffi", "the", "great", "guy", "."]
+    assert repr(parser_input) == "ParserInput(from_tokens'Hello Koffi the great guy.')"