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"""
Pygments SQL lexers tests
~~~~~~~~~~~~~~~~~~~~~~~~~
:copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import pytest
from pygments.lexers.sql import name_between_bracket_re, \
name_between_backtick_re, tsql_go_re, tsql_declare_re, \
tsql_variable_re, MySqlLexer, TransactSqlLexer
from pygments.token import Comment, Name, Number, Punctuation, Whitespace
@pytest.fixture(scope='module')
def lexer():
yield TransactSqlLexer()
def _assert_are_tokens_of_type(lexer, examples, expected_token_type):
for test_number, example in enumerate(examples.split(), 1):
token_count = 0
for token_type, token_value in lexer.get_tokens(example):
if token_type != Whitespace:
token_count += 1
assert token_type == expected_token_type, \
'token_type #%d for %s is be %s but must be %s' % \
(test_number, token_value, token_type, expected_token_type)
assert token_count == 1, \
'%s must yield exactly 1 token instead of %d' % \
(example, token_count)
def _assert_tokens_match(lexer, text, expected_tokens_without_trailing_newline):
actual_tokens = tuple(lexer.get_tokens(text))
if (len(actual_tokens) >= 1) and (actual_tokens[-1] == (Whitespace, '\n')):
actual_tokens = tuple(actual_tokens[:-1])
assert expected_tokens_without_trailing_newline == actual_tokens, \
'text must yield expected tokens: %s' % text
def test_can_lex_float(lexer):
_assert_are_tokens_of_type(lexer,
'1. 1.e1 .1 1.2 1.2e3 1.2e+3 1.2e-3 1e2',
Number.Float)
_assert_tokens_match(lexer,
'1e2.1e2',
((Number.Float, '1e2'), (Number.Float, '.1e2')))
def test_can_reject_almost_float(lexer):
_assert_tokens_match(lexer, '.e1', ((Punctuation, '.'), (Name, 'e1')))
def test_can_lex_integer(lexer):
_assert_are_tokens_of_type(lexer, '1 23 456', Number.Integer)
def test_can_lex_names(lexer):
_assert_are_tokens_of_type(
lexer,
'thingy thingy123 _thingy _ _123 Ähnliches Müll #temp1 ##temp2',
Name)
def test_can_lex_comments(lexer):
_assert_tokens_match(lexer, '--\n', ((Comment.Single, '--\n'),))
_assert_tokens_match(lexer, '/**/', (
(Comment.Multiline, '/*'), (Comment.Multiline, '*/')
))
_assert_tokens_match(lexer, '/*/**/*/', (
(Comment.Multiline, '/*'),
(Comment.Multiline, '/*'),
(Comment.Multiline, '*/'),
(Comment.Multiline, '*/'),
))
def test_can_match_analyze_text_res():
assert ['`a`', '`bc`'] == \
name_between_backtick_re.findall('select `a`, `bc` from some')
assert ['[a]', '[bc]'] == \
name_between_bracket_re.findall('select [a], [bc] from some')
assert tsql_declare_re.search('--\nDeClaRe @some int;')
assert tsql_go_re.search('select 1\ngo\n--')
assert tsql_variable_re.search('create procedure dbo.usp_x @a int, @b int')
def test_can_analyze_text():
mysql_lexer = MySqlLexer()
tsql_lexer = TransactSqlLexer()
code_to_expected_lexer_map = {
'select `a`, `bc` from some': mysql_lexer,
'select [a], [bc] from some': tsql_lexer,
'-- `a`, `bc`\nselect [a], [bc] from some': tsql_lexer,
'-- `a`, `bc`\nselect [a], [bc] from some; go': tsql_lexer,
}
sql_lexers = set(code_to_expected_lexer_map.values())
for code, expected_lexer in code_to_expected_lexer_map.items():
ratings_and_lexers = list((lexer.analyse_text(code), lexer.name) for lexer in sql_lexers)
best_rating, best_lexer_name = sorted(ratings_and_lexers, reverse=True)[0]
expected_rating = expected_lexer.analyse_text(code)
message = (
'lexer must be %s (rating %.2f) instead of '
'%s (rating %.2f) for analyse_text() on code:\n%s') % (
expected_lexer.name,
expected_rating,
best_lexer_name,
best_rating,
code
)
assert expected_lexer.name == best_lexer_name, message
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