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1 change: 1 addition & 0 deletions .gitignore
Original file line number Diff line number Diff line change
Expand Up @@ -5,3 +5,4 @@
build/
dist/
.cache
.venv/
6 changes: 3 additions & 3 deletions html_similarity/structural_similarity.py
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
import difflib
from io import StringIO
from io import BytesIO, StringIO

import lxml.html

Expand Down Expand Up @@ -32,8 +32,8 @@ def structural_similarity(document_1, document_2):
:return: int
"""
try:
document_1 = lxml.html.parse(StringIO(document_1))
document_2 = lxml.html.parse(StringIO(document_2))
document_1 = lxml.html.parse(StringIO(document_1) if isinstance(document_1, str) else BytesIO(document_1))
document_2 = lxml.html.parse(StringIO(document_2) if isinstance(document_2, str) else BytesIO(document_2))
except Exception as e:
print(e)
return 0
Expand Down
35 changes: 34 additions & 1 deletion tests/test_similarity.py
Original file line number Diff line number Diff line change
@@ -1,9 +1,9 @@
from html_similarity import style_similarity
from html_similarity.style_similarity import jaccard_similarity
from html_similarity import structural_similarity

from .utils import almost_equal


html1 = ''''
<html>
<body class="body-class">
Expand Down Expand Up @@ -44,3 +44,36 @@ def test_jaccard_similarity():
assert almost_equal(0.6666, jaccard_similarity(['a', 'b'], ['a', 'b', 'c']))
assert 0 == jaccard_similarity(['d', 'e'], ['a', 'b', 'c'])
assert almost_equal(jaccard_similarity(list(range(1, 1000000)), list(range(1000000 - 10, 2 * 1000000))), 0)

xhtml_1 = '''
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<body class="body-class">
<h1 class="title">This a title<h1>
<ul>
<li class="item active">item 1</li>
<li class="item">item 2</li>
<li class="item">item 3</li>
<ul>
</body>
</html>
'''

xhtml_2 = '''
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<body class="body-class">
<h1 class="title">This a different title<h1>
<ul>
<li class="item active">item 1</li>
<li class="item">item 2</li>
<li class="item">item 3</li>
<ul>
</body>
</html>
'''

def test_bytes_similarity():
assert 1 == structural_similarity(xhtml_1.encode('utf-8'), xhtml_2.encode('utf-8'))