Additional snipe tests

tests/test_data/test_snipe.py

@@ -0,0 +1,27 @@
+from data.snipe import should_snipe
+import unittest
+from unittest.mock import Mock
+
+
+class TestSnipe(unittest.TestCase):
+    def test_should_snipe(self):
+        mock_message = Mock()
+        mock_guild = Mock()
+        mock_author = Mock()
+
+        # Guild is None
+        mock_message.guild = None
+        self.assertFalse(should_snipe(mock_message))
+        mock_message.guild = mock_guild
+
+        # Author is a bot
+        mock_message.author = mock_author
+        mock_author.bot = True
+        self.assertFalse(should_snipe(mock_message))
+        mock_author.bot = False
+
+        mock_message.content = "Some string that contains A123B-CE68S-Z6B34 a Steam code"
+        self.assertFalse(should_snipe(mock_message))
+
+        mock_message.content = "Some string that does NOT contain a Steam code"
+        self.assertTrue(should_snipe(mock_message))