Fixed warning: "_POSIX_C_SOURCE" redefined and removed old tests.

src/parser.py

@@ -310,8 +310,11 @@ class Parser(BisonParser):
     # raw lex script, verbatim here
     # -----------------------------------------
     lexscript = r"""
-    %{
+    %top{
     #include "Python.h"
+    }
+
+    %{
     #define YYSTYPE void *
     #include "tokens.h"
     extern void *py_parser;

tests/test_variables.py

-import unittest
-
-from src.calc import Parser
-from tests.parser import run_expressions
-from sympy import Symbol, symbols
-
-
-class TestVariables(unittest.TestCase):
-
-    def test_addition(self):
-        expressions = [('5 + 5', 5 + 5)]
-        run_expressions(Parser, expressions)
-
-    def test_addition_of_one_term(self):
-        a = Symbol('a')
-        expressions = [('a + 5', 5 + a)]
-        run_expressions(Parser, expressions)
-
-    def test_addition_of_two_terms(self):
-        a, b = symbols('a,b')
-        expressions = [('4*a + 5*b', 4 * a + 5 * b)]
-        run_expressions(Parser, expressions)
-
-    #def test_short_addition_of_two_terms(self):
-    #    a, b = symbols('a,b')
-    #    expressions = [('4a + 5b', 4.0*a + 5.0*b)]
-    #    run_expressions(expressions, verbose=1)