add missing lreal to util.py (gijzelaerr#487)

* add missing lreal to utile.py

* fix mypy issue

Author: spreeker

snap7/util.py

@@ -1043,7 +1043,7 @@ def get_lreal(bytearray_: bytearray, byte_index: int) -> float:
     return struct.unpack_from(">d", bytearray_, offset=byte_index)[0]
 
 
-def set_lreal(bytearray_: bytearray, byte_index: int, lreal: float) -> bytearray:
+def set_lreal(bytearray_: bytearray, byte_index: int, lreal) -> bytearray:
     """Set the long real
 
     Notes:
@@ -1801,6 +1801,9 @@ def set_value(self, byte_index: Union[str, int], type_: str, value: Union[bool,
         if type_ == 'REAL':
             return set_real(bytearray_, byte_index, value)
 
+        if type_ == 'LREAL':
+            return set_lreal(bytearray_, byte_index, value)
+
         if isinstance(value, int):
             type_to_func = {
                 'DWORD': set_dword,

tests/test_util.py

@@ -143,6 +143,12 @@ def test_set_byte(self):
         row['testByte'] = 255
         self.assertEqual(row['testByte'], 255)
 
+    def test_set_lreal(self):
+        test_array = bytearray(_bytearray)
+        row = util.DB_Row(test_array, test_spec, layout_offset=4)
+        row['testLreal'] = 123.123
+        self.assertEqual(row['testLreal'], 123.123)
+
     def test_get_s5time(self):
         """
         S5TIME extraction from bytearray