Fix unparsing malformed entities, bump v1.10.10

tests/telethon/extensions/test_html.py

@@ -0,0 +1,38 @@
+"""
+Tests for `telethon.extensions.html`.
+"""
+from telethon.extensions import html
+from telethon.tl.types import MessageEntityBold, MessageEntityTextUrl
+
+
+def test_entity_edges():
+    """
+    Test that entities at the edges (start and end) don't crash.
+    """
+    text = 'Hello, world'
+    entities = [MessageEntityBold(0, 5), MessageEntityBold(7, 5)]
+    result = html.unparse(text, entities)
+    assert result == '<strong>Hello</strong>, <strong>world</strong>'
+
+
+def test_malformed_entities():
+    """
+    Test that malformed entity offsets from bad clients
+    don't crash and produce the expected results.
+    """
+    text = '🏆Telegram Official Android Challenge is over🏆.'
+    entities = [MessageEntityTextUrl(offset=2, length=43, url='https://example.com')]
+    result = html.unparse(text, entities)
+    assert result == '🏆<a href="https://example.com">Telegram Official Android Challenge is over🏆</a>.'
+
+
+def test_trailing_malformed_entities():
+    """
+    Similar to `test_malformed_entities`, but for the edge
+    case where the malformed entity offset is right at the end
+    (note the lack of a trailing dot in the text string).
+    """
+    text = '🏆Telegram Official Android Challenge is over🏆'
+    entities = [MessageEntityTextUrl(offset=2, length=43, url='https://example.com')]
+    result = html.unparse(text, entities)
+    assert result == '🏆<a href="https://example.com">Telegram Official Android Challenge is over🏆</a>'