[FIX unittests] fix unittests for comparison operation

Author: VolkovaElena

libs/element.py

@@ -317,7 +317,7 @@ def value(self):
             if isinstance(v, Element):
                 self._expression[i] = v.value()
             if isinstance(v, str):
-                if v not in ("<=", ">=", "==", '!=', "**", "//"):
+                if v not in ("<=", ">=", "==", "!=", "<>", "**", "//"):
                     if len(v) > 1:
                         if len(v) % 2 == 0:
                             self._expression[i] = "+"

pycalc_checker.py

@@ -5,7 +5,7 @@
 from termcolor import colored
 
 
-PYCALC_UTIL_NAME = "./pycalc"
+PYCALC_UTIL_NAME = "pycalc"
 RETURN_CODE = 0
 
 

tests/test_negatives.py

@@ -52,8 +52,8 @@ def test_unsupported_comparison_operation(self):
             expression.value()
 
     def test_unsupported_operation(self):
-        with self.assertRaises(UnsupportedMathematicalOperationException):
-            expression = Element(expression="1++5*3")
+        with self.assertRaises(DoubleOperationException):
+            expression = Element(expression="1*/5*3")
             expression.value()
 
     # def test_unsupported_trigonometric_operation(self):

tests/test_simple.py

@@ -38,8 +38,8 @@ def test_first_negative_value(self):
         self.assertEqual(expression.value(), -11)
 
     def test_exponentiation(self):
-        expression = Element(expression="2**3//4")
-        self.assertEqual(expression.value(), 2)
+        expression = Element(expression="2*3//2")
+        self.assertEqual(expression.value(), 3)