Extend tests to 24bit types

Signed-off-by: Greter Raffael <raffael.greter@hotmail.com>

Author: raffi-g

test/test_eds.py

@@ -23,6 +23,13 @@ class TestEDS(unittest.TestCase):
             {"hex_str": "0000", "bit_length": 16, "expected": 0},
             {"hex_str": "0001", "bit_length": 16, "expected": 1}
         ],
+        "int24": [
+            {"hex_str": "7FFFFF", "bit_length": 24, "expected": 8388607},
+            {"hex_str": "800000", "bit_length": 24, "expected": -8388608},
+            {"hex_str": "FFFFFF", "bit_length": 24, "expected": -1},
+            {"hex_str": "000000", "bit_length": 24, "expected": 0},
+            {"hex_str": "000001", "bit_length": 24, "expected": 1}
+        ],
         "int32": [
             {"hex_str": "7FFFFFFF", "bit_length": 32, "expected": 2147483647},
             {"hex_str": "80000000", "bit_length": 32, "expected": -2147483648},

test/test_od.py

@@ -24,6 +24,12 @@ def test_unsigned16(self):
         self.assertEqual(var.decode_raw(b"\xfe\xff"), 65534)
         self.assertEqual(var.encode_raw(65534), b"\xfe\xff")
 
+    def test_unsigned24(self):
+        var = od.ODVariable("Test UNSIGNED24", 0x1000)
+        var.data_type = od.UNSIGNED24
+        self.assertEqual(var.decode_raw(b"\xfd\xfe\xff"), 16776957)
+        self.assertEqual(var.encode_raw(16776957), b"\xfd\xfe\xff")
+
     def test_unsigned32(self):
         var = od.ODVariable("Test UNSIGNED32", 0x1000)
         var.data_type = od.UNSIGNED32
@@ -46,6 +52,14 @@ def test_integer16(self):
         self.assertEqual(var.encode_raw(-2), b"\xfe\xff")
         self.assertEqual(var.encode_raw(1), b"\x01\x00")
 
+    def test_integer24(self):
+        var = od.ODVariable("Test INTEGER24", 0x1000)
+        var.data_type = od.INTEGER24
+        self.assertEqual(var.decode_raw(b"\xfe\xff\xff"), -2)
+        self.assertEqual(var.decode_raw(b"\x01\x00\x00"), 1)
+        self.assertEqual(var.encode_raw(-2), b"\xfe\xff\xff")
+        self.assertEqual(var.encode_raw(1), b"\x01\x00\x00")
+
     def test_integer32(self):
         var = od.ODVariable("Test INTEGER32", 0x1000)
         var.data_type = od.INTEGER32