9e216da9ef
After go1.16, go will use module mode by default, even when the repository is checked out under GOPATH or in a one-off directory. Add go.mod, go.sum to keep this repo buildable without opting out of the module mode. > go mod init github.com/mmcgrana/gobyexample > go mod tidy > go mod vendor In module mode, the 'vendor' directory is special and its contents will be actively maintained by the go command. pygments aren't the dependency the go will know about, so it will delete the contents from vendor directory. Move it to `third_party` directory now. And, vendor the blackfriday package. Note: the tutorial contents are not affected by the change in go1.16 because all the examples in this tutorial ask users to run the go command with the explicit list of files to be compiled (e.g. `go run hello-world.go` or `go build command-line-arguments.go`). When the source list is provided, the go command does not have to compute the build list and whether it's running in GOPATH mode or module mode becomes irrelevant.
138 lines
5.2 KiB
Python
138 lines
5.2 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Pygments regex lexer tests
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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:copyright: Copyright 2006-2015 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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import time
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import unittest
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from pygments.token import String
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from pygments.lexers.perl import PerlLexer
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class RunawayRegexTest(unittest.TestCase):
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# A previous version of the Perl lexer would spend a great deal of
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# time backtracking when given particular strings. These tests show that
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# the runaway backtracking doesn't happen any more (at least for the given
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# cases).
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lexer = PerlLexer()
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### Test helpers.
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def assert_single_token(self, s, token):
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"""Show that a given string generates only one token."""
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tokens = list(self.lexer.get_tokens_unprocessed(s))
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self.assertEqual(len(tokens), 1, tokens)
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self.assertEqual(s, tokens[0][2])
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self.assertEqual(token, tokens[0][1])
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def assert_tokens(self, strings, expected_tokens):
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"""Show that a given string generates the expected tokens."""
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tokens = list(self.lexer.get_tokens_unprocessed(''.join(strings)))
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self.assertEqual(len(tokens), len(expected_tokens), tokens)
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for index, s in enumerate(strings):
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self.assertEqual(s, tokens[index][2])
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self.assertEqual(expected_tokens[index], tokens[index][1])
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def assert_fast_tokenization(self, s):
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"""Show that a given string is tokenized quickly."""
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start = time.time()
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tokens = list(self.lexer.get_tokens_unprocessed(s))
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end = time.time()
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# Isn't 10 seconds kind of a long time? Yes, but we don't want false
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# positives when the tests are starved for CPU time.
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if end-start > 10:
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self.fail('tokenization took too long')
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return tokens
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### Strings.
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def test_single_quote_strings(self):
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self.assert_single_token(r"'foo\tbar\\\'baz'", String)
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self.assert_fast_tokenization("'" + '\\'*999)
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def test_double_quote_strings(self):
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self.assert_single_token(r'"foo\tbar\\\"baz"', String)
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self.assert_fast_tokenization('"' + '\\'*999)
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def test_backtick_strings(self):
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self.assert_single_token(r'`foo\tbar\\\`baz`', String.Backtick)
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self.assert_fast_tokenization('`' + '\\'*999)
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### Regex matches with various delimiters.
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def test_match(self):
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self.assert_single_token(r'/aa\tbb/', String.Regex)
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self.assert_fast_tokenization('/' + '\\'*999)
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def test_match_with_slash(self):
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self.assert_tokens(['m', '/\n\\t\\\\/'], [String.Regex, String.Regex])
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self.assert_fast_tokenization('m/xxx\n' + '\\'*999)
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def test_match_with_bang(self):
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self.assert_tokens(['m', r'!aa\t\!bb!'], [String.Regex, String.Regex])
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self.assert_fast_tokenization('m!' + '\\'*999)
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def test_match_with_brace(self):
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self.assert_tokens(['m', r'{aa\t\}bb}'], [String.Regex, String.Regex])
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self.assert_fast_tokenization('m{' + '\\'*999)
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def test_match_with_angle_brackets(self):
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self.assert_tokens(['m', r'<aa\t\>bb>'], [String.Regex, String.Regex])
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self.assert_fast_tokenization('m<' + '\\'*999)
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def test_match_with_parenthesis(self):
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self.assert_tokens(['m', r'(aa\t\)bb)'], [String.Regex, String.Regex])
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self.assert_fast_tokenization('m(' + '\\'*999)
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def test_match_with_at_sign(self):
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self.assert_tokens(['m', r'@aa\t\@bb@'], [String.Regex, String.Regex])
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self.assert_fast_tokenization('m@' + '\\'*999)
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def test_match_with_percent_sign(self):
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self.assert_tokens(['m', r'%aa\t\%bb%'], [String.Regex, String.Regex])
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self.assert_fast_tokenization('m%' + '\\'*999)
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def test_match_with_dollar_sign(self):
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self.assert_tokens(['m', r'$aa\t\$bb$'], [String.Regex, String.Regex])
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self.assert_fast_tokenization('m$' + '\\'*999)
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### Regex substitutions with various delimeters.
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def test_substitution_with_slash(self):
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self.assert_single_token('s/aaa/bbb/g', String.Regex)
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self.assert_fast_tokenization('s/foo/' + '\\'*999)
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def test_substitution_with_at_sign(self):
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self.assert_single_token(r's@aaa@bbb@g', String.Regex)
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self.assert_fast_tokenization('s@foo@' + '\\'*999)
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def test_substitution_with_percent_sign(self):
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self.assert_single_token(r's%aaa%bbb%g', String.Regex)
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self.assert_fast_tokenization('s%foo%' + '\\'*999)
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def test_substitution_with_brace(self):
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self.assert_single_token(r's{aaa}', String.Regex)
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self.assert_fast_tokenization('s{' + '\\'*999)
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def test_substitution_with_angle_bracket(self):
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self.assert_single_token(r's<aaa>', String.Regex)
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self.assert_fast_tokenization('s<' + '\\'*999)
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def test_substitution_with_angle_bracket(self):
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self.assert_single_token(r's<aaa>', String.Regex)
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self.assert_fast_tokenization('s<' + '\\'*999)
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def test_substitution_with_square_bracket(self):
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self.assert_single_token(r's[aaa]', String.Regex)
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self.assert_fast_tokenization('s[' + '\\'*999)
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def test_substitution_with_parenthesis(self):
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self.assert_single_token(r's(aaa)', String.Regex)
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self.assert_fast_tokenization('s(' + '\\'*999)
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