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"""The the pyzor.digest module
"""
import unittest
import pyzor.digest
from pyzor.digest import *
try:
from unittest.mock import patch, Mock, call
except ImportError:
from mock import patch, Mock, call
HTML_TEXT = """<html><head><title>Email spam</title></head><body>
<p><b>Email spam</b>, also known as <b>junk email</b>
or <b>unsolicited bulk email</b> (<i>UBE</i>), is a subset of
<a href="/wiki/Spam_(electronic)" title="Spam (electronic)">electronic spam</a>
involving nearly identical messages sent to numerous recipients by <a href="/wiki/Email" title="Email">
email</a>. Clicking on <a href="/wiki/Html_email#Security_vulnerabilities" title="Html email" class="mw-redirect">
links in spam email</a> may send users to <a href="/wiki/Phishing" title="Phishing">phishing</a>
web sites or sites that are hosting <a href="/wiki/Malware" title="Malware">malware</a>.</body></html>"""
HTML_TEXT_STRIPED = (
"Email spam Email spam , also known as junk email or unsolicited bulk email ( UBE ),"
" is a subset of electronic spam involving nearly identical messages sent to numerous recipients by email"
" . Clicking on links in spam email may send users to phishing web sites or sites that are hosting malware ."
)
HTML_STYLE = """<html><head></head><sTyle>Some random style</stylE>
<body>This is a test.</body></html>
"""
HTML_SCRIPT = """<html><head></head><SCRIPT>Some random script</SCRIPT>
<body>This is a test.</body></html>
"""
class HTMLStripperTests(unittest.TestCase):
def setUp(self):
unittest.TestCase.setUp(self)
self.data = []
def tearDown(self):
unittest.TestCase.tearDown(self)
def test_HTMLStripper(self):
stripper = HTMLStripper(self.data)
stripper.feed(HTML_TEXT)
res = " ".join(self.data)
self.assertEqual(res, HTML_TEXT_STRIPED)
def test_strip_style(self):
stripper = HTMLStripper(self.data)
stripper.feed(HTML_STYLE)
res = " ".join(self.data)
self.assertEqual(res, "This is a test.")
def test_strip_script(self):
stripper = HTMLStripper(self.data)
stripper.feed(HTML_SCRIPT)
res = " ".join(self.data)
self.assertEqual(res, "This is a test.")
class PreDigestTests(unittest.TestCase):
def setUp(self):
unittest.TestCase.setUp(self)
self.lines = []
def mock_digest_paylods(c, message):
yield message.decode("utf8")
def mock_handle_line(s, line):
self.lines.append(line.decode("utf8"))
self.real_digest_payloads = DataDigester.digest_payloads
self.real_handle_line = DataDigester.handle_line
DataDigester.digest_payloads = mock_digest_paylods
DataDigester.handle_line = mock_handle_line
def tearDown(self):
unittest.TestCase.tearDown(self)
DataDigester.digest_payloads = self.real_digest_payloads
DataDigester.handle_line = self.real_handle_line
def test_predigest_emails(self):
"""Test email removal in the predigest process"""
real_longstr = DataDigester.longstr_ptrn
DataDigester.longstr_ptrn = re.compile(r"\S{100,}")
emails = [
"test@example.com",
"test123@example.com",
"test+abc@example.com",
"test.test2@example.com",
"test.test2+abc@example.com",
]
message = "Test %s Test2"
expected = "TestTest2"
try:
for email in emails:
self.lines = []
DataDigester((message % email).encode("utf8"))
self.assertEqual(self.lines[0], expected)
finally:
DataDigester.longstr_ptrn = real_longstr
def test_predigest_urls(self):
"""Test url removal in the predigest process"""
real_longstr = DataDigester.longstr_ptrn
DataDigester.longstr_ptrn = re.compile(r"\S{100,}")
urls = [
"http://www.example.com",
# "www.example.com", # XXX This also fail
"http://example.com",
# "example.com", # XXX This also fails
"http://www.example.com/test/" "http://www.example.com/test/test2",
]
message = "Test %s Test2"
expected = "TestTest2"
try:
for url in urls:
self.lines = []
DataDigester((message % url).encode("utf8"))
self.assertEqual(self.lines[0], expected)
finally:
DataDigester.longstr_ptrn = real_longstr
def test_predigest_long(self):
"""Test long "words" removal in the predigest process"""
strings = ["0A2D3f%a#S", "3sddkf9jdkd9", "@@#@@@@@@@@@"]
message = "Test %s Test2"
expected = "TestTest2"
for string in strings:
self.lines = []
DataDigester((message % string).encode("utf8"))
self.assertEqual(self.lines[0], expected)
def test_predigest_min_line_lenght(self):
"""Test small lines removal in the predigest process"""
message = "This line is included\n" "not this\n" "This also"
expected = ["Thislineisincluded", "Thisalso"]
DataDigester(message.encode("utf8"))
self.assertEqual(self.lines, expected)
def test_predigest_atomic(self):
"""Test atomic messages (lines <= 4) in the predigest process"""
message = "All this message\nShould be included\nIn the predigest"
expected = ["Allthismessage", "Shouldbeincluded", "Inthepredigest"]
DataDigester(message.encode("utf8"))
self.assertEqual(self.lines, expected)
def test_predigest_pieced(self):
"""Test pieced messages (lines > 4) in the predigest process"""
message = ""
for i in range(100):
message += "Line%d test test test\n" % i
expected = []
for i in [20, 21, 22, 60, 61, 62]:
expected.append("Line%dtesttesttest" % i)
DataDigester(message.encode("utf8"))
self.assertEqual(self.lines, expected)
class DigestTests(unittest.TestCase):
def setUp(self):
unittest.TestCase.setUp(self)
self.lines = []
def mock_digest_paylods(c, message):
yield message.decode("utf8")
self.real_digest_payloads = DataDigester.digest_payloads
DataDigester.digest_payloads = mock_digest_paylods
def tearDown(self):
unittest.TestCase.tearDown(self)
DataDigester.digest_payloads = self.real_digest_payloads
def test_digest(self):
message = b"That's some good ham right there"
predigested = b"That'ssomegoodhamrightthere"
digest = hashlib.sha1()
digest.update(predigested)
expected = digest.hexdigest()
result = DataDigester(message).value
self.assertEqual(result, expected)
def test_digest_w_null(self):
message = b"That's some good ham rig\x00ht there"
predigested = b"That'ssomegoodhamrightthere"
digest = hashlib.sha1()
digest.update(predigested)
expected = digest.hexdigest()
result = DataDigester(message).value
self.assertEqual(result, expected)
class MessageDigestTest(unittest.TestCase):
def setUp(self):
unittest.TestCase.setUp(self)
patch(
"pyzor.digest.DataDigester.normalize_html_part", return_value="normalized"
).start()
self.config = {
"get_content_maintype.return_value": "text",
"get_content_charset.return_value": "utf8",
"get_payload.return_value": Mock(),
"get_payload.return_value.decode.return_value": "decoded",
}
def tearDown(self):
unittest.TestCase.tearDown(self)
patch.stopall()
def check_msg(self):
mock_part = Mock(**self.config)
conf = {"walk.return_value": [mock_part]}
mock_msg = Mock(**conf)
return mock_part, mock_msg, list(DataDigester.digest_payloads(mock_msg))
def test_text(self):
mock_part, mock_msg, result = self.check_msg()
self.assertEqual(result, ["decoded"])
expected = [call.decode("utf8", "ignore")]
payload = mock_part.get_payload.return_value
payload.assert_has_calls(expected, True)
def test_text_no_charset(self):
self.config["get_content_charset.return_value"] = None
mock_part, mock_msg, result = self.check_msg()
self.assertEqual(result, ["decoded"])
expected = [call.decode("ascii", "ignore")]
payload = mock_part.get_payload.return_value
payload.assert_has_calls(expected)
def test_text_quopri(self):
self.config["get_content_charset.return_value"] = "quopri"
mock_part, mock_msg, result = self.check_msg()
self.assertEqual(result, ["decoded"])
expected = [call.decode("quopri", "strict")]
payload = mock_part.get_payload.return_value
payload.assert_has_calls(expected)
def test_text_lookuperror(self):
def _decode(encoding, errors):
if encoding not in ("ascii",):
raise LookupError()
return "decoded"
self.config["get_payload.return_value.decode.side_effect"] = _decode
mock_part, mock_msg, result = self.check_msg()
self.assertEqual(result, ["decoded"])
expected = [call.decode("utf8", "ignore"), call.decode("ascii", "ignore")]
payload = mock_part.get_payload.return_value
payload.assert_has_calls(expected)
def test_text_unicodeerror(self):
self.config["get_payload.return_value.decode.side_effect"] = UnicodeError
mock_part, mock_msg, result = self.check_msg()
self.assertEqual(result, [])
expected = [call.decode("utf8", "ignore"), call.decode("ascii", "ignore")]
payload = mock_part.get_payload.return_value
payload.assert_has_calls(expected)
def test_html(self):
self.config["get_content_subtype.return_value"] = "html"
mock_part, mock_msg, result = self.check_msg()
self.assertEqual(result, ["normalized"])
def test_multipart(self):
self.config["get_content_maintype.return_value"] = "nottext"
self.config["is_multipart.return_value"] = True
mock_part, mock_msg, result = self.check_msg()
self.assertEqual(result, [])
def test_nontext(self):
self.config["get_content_maintype.return_value"] = "nottext"
self.config["is_multipart.return_value"] = False
mock_part, mock_msg, result = self.check_msg()
self.assertEqual(result, [mock_part.get_payload.return_value])
def suite():
"""Gather all the tests from this module in a test suite."""
test_suite = unittest.TestSuite()
test_suite.addTest(unittest.makeSuite(HTMLStripperTests))
test_suite.addTest(unittest.makeSuite(PreDigestTests))
test_suite.addTest(unittest.makeSuite(DigestTests))
test_suite.addTest(unittest.makeSuite(MessageDigestTest))
return test_suite
if __name__ == "__main__":
unittest.main()
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