1 files changed, 93 insertions, 0 deletions
diff --git a/tests/test_converters.py b/tests/test_converters.py
new file mode 100644
index 000000000..3cf774c80
--- /dev/null
+++ b/tests/test_converters.py
@@ -0,0 +1,93 @@
+import asyncio
+from datetime import datetime
+from unittest.mock import MagicMock
+
+import pytest
+from discord.ext.commands import BadArgument
+
+from bot.converters import (
+    ExpirationDate,
+    TagContentConverter,
+    TagNameConverter,
+    ValidPythonIdentifier,
+)
+
+
+[email protected](
+    ('value', 'expected'),
+    (
+        # sorry aliens
+        ('2199-01-01T00:00:00', datetime(2199, 1, 1)),
+    )
+)
+def test_expiration_date_converter_for_valid(value: str, expected: datetime):
+    converter = ExpirationDate()
+    assert asyncio.run(converter.convert(None, value)) == expected
+
+
+[email protected](
+    ('value', 'expected'),
+    (
+        ('hello', 'hello'),
+        ('  h ello  ', 'h ello')
+    )
+)
+def test_tag_content_converter_for_valid(value: str, expected: str):
+    assert asyncio.run(TagContentConverter.convert(None, value)) == expected
+
+
+[email protected](
+    ('value', 'expected'),
+    (
+        ('', "Tag contents should not be empty, or filled with whitespace."),
+        ('   ', "Tag contents should not be empty, or filled with whitespace.")
+    )
+)
+def test_tag_content_converter_for_invalid(value: str, expected: str):
+    context = MagicMock()
+    context.author = 'bob'
+
+    with pytest.raises(BadArgument, match=expected):
+        asyncio.run(TagContentConverter.convert(context, value))
+
+
+[email protected](
+    ('value', 'expected'),
+    (
+        ('tracebacks', 'tracebacks'),
+        ('Tracebacks', 'tracebacks'),
+        ('  Tracebacks  ', 'tracebacks'),
+    )
+)
+def test_tag_name_converter_for_valid(value: str, expected: str):
+    assert asyncio.run(TagNameConverter.convert(None, value)) == expected
+
+
+[email protected](
+    ('value', 'expected'),
+    (
+        ('👋', "Don't be ridiculous, you can't use that character!"),
+        ('', "Tag names should not be empty, or filled with whitespace."),
+        ('  ', "Tag names should not be empty, or filled with whitespace."),
+        ('42', "Tag names can't be numbers."),
+        # Escape question mark as this is evaluated as regular expression.
+        ('x' * 128, r"Are you insane\? That's way too long!"),
+    )
+)
+def test_tag_name_converter_for_invalid(value: str, expected: str):
+    context = MagicMock()
+    context.author = 'bob'
+
+    with pytest.raises(BadArgument, match=expected):
+        asyncio.run(TagNameConverter.convert(context, value))
+
+
+[email protected]('value', ('foo', 'lemon'))
+def test_valid_python_identifier_for_valid(value: str):
+    assert asyncio.run(ValidPythonIdentifier.convert(None, value)) == value
+
+
+[email protected]('value', ('nested.stuff', '#####'))
+def test_valid_python_identifier_for_invalid(value: str):
+    with pytest.raises(BadArgument, match=f'`{value}` is not a valid Python identifier'):
+        asyncio.run(ValidPythonIdentifier.convert(None, value))