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#!/usr/bin/env python3
import importlib.util
import json
import os
import pathlib
from types import ModuleType
from typing import Dict, List
import pytest
import requests
PROJECT_EULER_DIR_PATH = pathlib.Path.cwd().joinpath("project_euler")
PROJECT_EULER_ANSWERS_PATH = pathlib.Path.cwd().joinpath(
"scripts", "project_euler_answers.json"
)
with open(PROJECT_EULER_ANSWERS_PATH) as file_handle:
PROBLEM_ANSWERS: Dict[str, str] = json.load(file_handle)
def convert_path_to_module(file_path: pathlib.Path) -> ModuleType:
"""Converts a file path to a Python module"""
spec = importlib.util.spec_from_file_location(file_path.name, str(file_path))
module = importlib.util.module_from_spec(spec)
spec.loader.exec_module(module) # type: ignore
return module
def all_solution_file_paths() -> List[pathlib.Path]:
"""Collects all the solution file path in the Project Euler directory"""
solution_file_paths = []
for problem_dir_path in PROJECT_EULER_DIR_PATH.iterdir():
if problem_dir_path.is_file() or problem_dir_path.name.startswith("_"):
continue
for file_path in problem_dir_path.iterdir():
if file_path.suffix != ".py" or file_path.name.startswith(("_", "test")):
continue
solution_file_paths.append(file_path)
return solution_file_paths
def get_files_url() -> str:
"""Return the pull request number which triggered this action."""
with open(os.environ["GITHUB_EVENT_PATH"]) as file:
event = json.load(file)
return event["pull_request"]["url"] + "/files"
def added_solution_file_path() -> List[pathlib.Path]:
"""Collects only the solution file path which got added in the current
pull request.
This will only be triggered if the script is ran from GitHub Actions.
"""
solution_file_paths = []
headers = {
"Accept": "application/vnd.github.v3+json",
"Authorization": "token " + os.environ["GITHUB_TOKEN"],
}
files = requests.get(get_files_url(), headers=headers).json()
for file in files:
filepath = pathlib.Path.cwd().joinpath(file["filename"])
if (
filepath.suffix != ".py"
or filepath.name.startswith(("_", "test"))
or not filepath.name.startswith("sol")
):
continue
solution_file_paths.append(filepath)
return solution_file_paths
def collect_solution_file_paths() -> List[pathlib.Path]:
if os.environ.get("CI") and os.environ.get("GITHUB_EVENT_NAME") == "pull_request":
# Return only if there are any, otherwise default to all solutions
if filepaths := added_solution_file_path():
return filepaths
return all_solution_file_paths()
@pytest.mark.parametrize(
"solution_path",
collect_solution_file_paths(),
ids=lambda path: f"{path.parent.name}/{path.name}",
)
def test_project_euler(solution_path: pathlib.Path) -> None:
"""Testing for all Project Euler solutions"""
# problem_[extract this part] and pad it with zeroes for width 3
problem_number: str = solution_path.parent.name[8:].zfill(3)
expected: str = PROBLEM_ANSWERS[problem_number]
solution_module = convert_path_to_module(solution_path)
answer = str(solution_module.solution()) # type: ignore
assert answer == expected, f"Expected {expected} but got {answer}"