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20 changes: 20 additions & 0 deletions html5lib/tests/test_treewalkers.py
Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
from __future__ import absolute_import, division, unicode_literals

import itertools

import pytest

try:
Expand Down Expand Up @@ -100,6 +102,24 @@ def test_treewalker_six_mix():
yield runTreewalkerEditTest, intext, expected, attrs, tree


@pytest.mark.parametrize("tree,char", itertools.product(sorted(treeTypes.items()), ["x", "\u1234"]))
def test_fragment_single_char(tree, char):
expected = [
{'data': char, 'type': 'Characters'}
]

treeName, treeClass = tree
if treeClass is None:
pytest.skip("Treebuilder not loaded")

parser = html5parser.HTMLParser(tree=treeClass["builder"])
document = parser.parseFragment(char)
document = treeClass.get("adapter", lambda x: x)(document)
output = Lint(treeClass["walker"](document))

assert list(output) == expected


@pytest.mark.skipif(treeTypes["lxml"] is None, reason="lxml not importable")
def test_lxml_xml():
expected = [
Expand Down