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03318a766c
* tests for push rule pattern matching * tests for acl pattern matching * factor out common `re.escape` * Factor out common re.compile * Factor out common anchoring code * add word_boundary support to `glob_to_regex` * Use `glob_to_regex` in push rule evaluator NB that this drops support for character classes. I don't think anyone ever used them. * Improve efficiency of globs with multiple wildcards The idea here is that we compress multiple `*` globs into a single `.*`. We also need to consider `?`, since `*?*` is as hard to implement efficiently as `**`. * add assertion on regex pattern * Fix mypy * Simplify glob_to_regex * Inline the glob_to_regex helper function Signed-off-by: Dan Callahan <danc@element.io> * Moar comments Signed-off-by: Dan Callahan <danc@element.io> Co-authored-by: Dan Callahan <danc@element.io>
60 lines
2.6 KiB
Python
60 lines
2.6 KiB
Python
# Copyright 2021 The Matrix.org Foundation C.I.C.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from synapse.util import glob_to_regex
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from tests.unittest import TestCase
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class GlobToRegexTestCase(TestCase):
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def test_literal_match(self):
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"""patterns without wildcards should match"""
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pat = glob_to_regex("foobaz")
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self.assertTrue(
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pat.match("FoobaZ"), "patterns should match and be case-insensitive"
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)
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self.assertFalse(
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pat.match("x foobaz"), "pattern should not match at word boundaries"
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)
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def test_wildcard_match(self):
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pat = glob_to_regex("f?o*baz")
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self.assertTrue(
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pat.match("FoobarbaZ"),
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"* should match string and pattern should be case-insensitive",
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)
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self.assertTrue(pat.match("foobaz"), "* should match 0 characters")
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self.assertFalse(pat.match("fooxaz"), "the character after * must match")
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self.assertFalse(pat.match("fobbaz"), "? should not match 0 characters")
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self.assertFalse(pat.match("fiiobaz"), "? should not match 2 characters")
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def test_multi_wildcard(self):
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"""patterns with multiple wildcards in a row should match"""
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pat = glob_to_regex("**baz")
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self.assertTrue(pat.match("agsgsbaz"), "** should match any string")
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self.assertTrue(pat.match("baz"), "** should match the empty string")
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self.assertEqual(pat.pattern, r"\A.{0,}baz\Z")
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pat = glob_to_regex("*?baz")
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self.assertTrue(pat.match("agsgsbaz"), "*? should match any string")
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self.assertTrue(pat.match("abaz"), "*? should match a single char")
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self.assertFalse(pat.match("baz"), "*? should not match the empty string")
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self.assertEqual(pat.pattern, r"\A.{1,}baz\Z")
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pat = glob_to_regex("a?*?*?baz")
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self.assertTrue(pat.match("a g baz"), "?*?*? should match 3 chars")
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self.assertFalse(pat.match("a..baz"), "?*?*? should not match 2 chars")
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self.assertTrue(pat.match("a.gg.baz"), "?*?*? should match 4 chars")
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self.assertEqual(pat.pattern, r"\Aa.{3,}baz\Z")
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