STCC-319 Convert Exponent Function

src/scratchtocatrobat/converter/converter.py

@@ -307,6 +307,7 @@ class _ScratchToCatrobat(object):
         "10 ^": lambda value: catrobat.create_formula_element_for([catformula.Functions.POWER, 10, value]),
         "floor": catformula.Functions.FLOOR,
         "ceiling": catformula.Functions.CEIL,
+        "e ^": catformula.Functions.EXP
     }
 
     math_unary_operators_mapping = {

src/scratchtocatrobat/converter/test_converter.py

@@ -516,6 +516,22 @@ def test_can_convert_pow_of_10_block(self):
         self.assertIsNone(exponent_fe.leftChild)
         self.assertIsNone(exponent_fe.rightChild)
 
+    # e ^
+    def test_can_convert_exponent_block(self):
+        exponent = 6
+        scratch_block = ["e ^", exponent]
+        [formula_element] = self.block_converter._catrobat_bricks_from(scratch_block, DUMMY_CATR_SPRITE)
+        self.assertIsInstance(formula_element, catformula.FormulaElement)
+        self.assertEqual(formula_element.type, catformula.FormulaElement.ElementType.FUNCTION)
+        self.assertEqual(formula_element.value, catformula.Functions.EXP.toString())
+
+        exponent_fe = formula_element.leftChild
+        self.assertIsInstance(exponent_fe, catformula.FormulaElement)
+        self.assertEqual(exponent_fe.type, catformula.FormulaElement.ElementType.NUMBER)
+        self.assertEqual(exponent_fe.value, "6")
+        self.assertIsNone(exponent_fe.leftChild)
+        self.assertIsNone(exponent_fe.rightChild)
+
     # lineCountOfList:
     def test_can_convert_line_count_of_list_block(self):
         scratch_block = ["lineCountOfList:", self._name_of_test_list]