Files
rio/tests/test_docstring_code_blocks.py
2024-04-03 19:23:29 +02:00

116 lines
3.3 KiB
Python

import re
import subprocess
import tempfile
from typing import * # type: ignore
import black
import pyright
import pytest
import rio
import rio.docs
CODE_BLOCK_PATTERN = re.compile(r"```.*?\n(.*?)\n```", re.DOTALL)
def all_components() -> list[Type[rio.Component]]:
"""
Iterates over all components that ship with Rio.
"""
to_do: Iterable[Type[rio.Component]] = [rio.Component]
result: list[Type[rio.Component]] = []
while to_do:
component = to_do.pop()
result.append(component)
to_do.extend(component.__subclasses__())
return result
def get_code_blocks(comp: Type[rio.Component]) -> list[str]:
"""
Returns a list of all code blocks in the docstring of a component.
"""
docs = rio.docs.ClassDocs.parse(comp)
# No docs?
if docs.details is None:
return []
# Find any contained code blocks
result: list[str] = []
for match in CODE_BLOCK_PATTERN.finditer(docs.details):
block: str = match.group(0)
assert block.startswith("```")
assert block.endswith("```")
# Split into language and source
linebreak = block.index("\n")
assert linebreak != -1
first_line = block[3:linebreak].strip()
block = block[linebreak + 1 : -3]
# Make sure a language is specified
assert first_line, "The code block has no language specified"
result.append(block)
return result
@pytest.mark.parametrize("comp", all_components())
def test_eval_code_block(comp: Type[rio.Component]) -> None:
# Eval all code blocks and make sure they don't crash
for source in get_code_blocks(comp):
compile(source, "<string>", "exec")
@pytest.mark.parametrize("comp", all_components())
def test_code_block_is_formatted(comp: Type[rio.Component]) -> None:
# Make sure all code blocks are formatted according to black
for source in get_code_blocks(comp):
formatted_source = black.format_str(source, mode=black.FileMode())
assert source == formatted_source
def _pyright_check_source(source: str) -> tuple[int, int]:
"""
Run pyright on the given source and return the number of errors and
warnings.
"""
with tempfile.NamedTemporaryFile(suffix=".py") as f:
# Dump the source to a file, and implicitly import rio
f.write("import rio\n".encode("utf-8"))
f.write(source.encode("utf-8"))
f.flush()
# Run pyright
proc = pyright.run(
f.name,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
result_out = proc.stdout
assert isinstance(result_out, bytes), type(result_out)
result_out = result_out.decode()
# Find the number of errors and warnings
match = re.search(
r"(\d+) error(s)?, (\d+) warning(s)?, (\d+) information",
result_out,
)
assert match is not None, result_out
return int(match.group(1)), int(match.group(3))
@pytest.mark.parametrize("comp", all_components())
def test_analyze_code_block(comp: Type[rio.Component]) -> None:
# Make sure pyright is happy with all code blocks
for source in get_code_blocks(comp):
n_errors, n_warnings = _pyright_check_source(source)
assert n_errors == 0, f"Found {n_errors} errors"
assert n_warnings == 0, f"Found {n_warnings} warnings"