Update to support python-telegram-bot v23

tests/test_basic.py

@@ -1,2 +1,3 @@
 def test_import():
-    import smsbot
+    import smsbot.utils
+    assert smsbot.utils.get_smsbot_version()

tests/test_utils.py

@@ -0,0 +1,69 @@
+from smsbot.utils import TwilioMessage
+
+
+def test_twiliomessage_normal():
+    instance = TwilioMessage(
+        {
+            "From": "+1234567890",
+            "To": "+0987654321",
+            "Body": "Hello, world!",
+            "NumMedia": "2",
+            "MediaUrl0": "http://example.com/media1.jpg",
+            "MediaUrl1": "http://example.com/media2.jpg",
+        }
+    )
+
+    assert instance.from_number == "+1234567890"
+    assert instance.to_number == "+0987654321"
+    assert instance.body == "Hello, world!"
+    assert instance.media == [
+        "http://example.com/media1.jpg",
+        "http://example.com/media2.jpg",
+    ]
+
+
+def test_twiliomessage_no_media():
+    instance = TwilioMessage(
+        {
+            "From": "+1234567890",
+            "To": "+0987654321",
+            "Body": "Hello, world!",
+        }
+    )
+
+    assert instance.media == []
+
+
+def test_twiliomessage_invalid_media_count():
+    instance = TwilioMessage(
+        {
+            "From": "+1234567890",
+            "To": "+0987654321",
+            "Body": "Hello, world!",
+            "NumMedia": "0",
+            "MediaUrl0": "http://example.com/media1.jpg",
+            "MediaUrl1": "http://example.com/media2.jpg",
+        }
+    )
+
+    assert instance.media == []
+
+def test_twiliomessage_invalid_media_count_extra():
+    instance = TwilioMessage(
+        {
+            "From": "+1234567890",
+            "To": "+0987654321",
+            "Body": "Hello, world!",
+            "NumMedia": "5",
+            "MediaUrl0": "http://example.com/media1.jpg",
+            "MediaUrl1": "http://example.com/media2.jpg",
+        }
+    )
+
+    assert instance.media == [
+        "http://example.com/media1.jpg",
+        "http://example.com/media2.jpg",
+        None,
+        None,
+        None,
+    ]