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from pathlib import Path
from tempfile import NamedTemporaryFile
from sybil import Sybil, Document
from sybil.typing import Parser, Lexer, LexemeMapping
def check_sybil(sybil: Sybil, text: str) -> Document:
"""
Run the supplied text through the supplied Sybil instance and evaluate the single
example it contains.
"""
with NamedTemporaryFile() as temp:
temp.write(text.encode())
temp.flush()
document = sybil.parse(Path(temp.name))
examples = list(document.examples())
assert len(examples) == 1, f'Expected exactly one example, got: {examples}'
examples[0].evaluate()
return document
def check_parser(parser: Parser, text: str) -> Document:
"""
Run the supplied text through the supplied parser and evaluate the single
example it contains.
This is for testing :data:`~sybil.typing.Parser` implementations.
"""
sybil = Sybil(parsers=[parser], pattern='*')
return check_sybil(sybil, text)
def check_lexer(
lexer: Lexer, source_text: str, expected_text: str, expected_lexemes: LexemeMapping
) -> None:
"""
Run the supplied text through the supplied lexer make sure it lexes a single
region and captures the expected text and lexemes.
This is for testing :data:`~sybil.typing.Lexer` implementations.
"""
document = Document(source_text, 'sample.txt')
regions = list(lexer(document))
assert len(regions) == 1, f'Expected exactly one region, got: {regions}'
region = regions[0]
assert expected_text == document.text[region.start:region.end]
assert region.lexemes == expected_lexemes
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