117 lines
4.2 KiB
Python
117 lines
4.2 KiB
Python
"""Test cases for running mypy programs using a Python interpreter.
|
|
|
|
Each test case type checks a program then runs it using Python. The
|
|
output (stdout) of the program is compared to expected output. Type checking
|
|
uses full builtins and other stubs.
|
|
|
|
Note: Currently Python interpreter paths are hard coded.
|
|
|
|
Note: These test cases are *not* included in the main test suite, as including
|
|
this suite would slow down the main suite too much.
|
|
"""
|
|
|
|
import os
|
|
import os.path
|
|
import re
|
|
import subprocess
|
|
from subprocess import PIPE
|
|
import sys
|
|
from tempfile import TemporaryDirectory
|
|
|
|
import pytest
|
|
|
|
from typing import List
|
|
|
|
from mypy.defaults import PYTHON3_VERSION
|
|
from mypy.test.config import test_temp_dir
|
|
from mypy.test.data import DataDrivenTestCase, DataSuite
|
|
from mypy.test.helpers import assert_string_arrays_equal, split_lines
|
|
from mypy.util import try_find_python2_interpreter
|
|
from mypy import api
|
|
|
|
# Path to Python 3 interpreter
|
|
python3_path = sys.executable
|
|
program_re = re.compile(r'\b_program.py\b')
|
|
|
|
|
|
class PythonEvaluationSuite(DataSuite):
|
|
files = ['pythoneval.test',
|
|
'python2eval.test',
|
|
'pythoneval-asyncio.test']
|
|
cache_dir = TemporaryDirectory()
|
|
|
|
def run_case(self, testcase: DataDrivenTestCase) -> None:
|
|
test_python_evaluation(testcase, os.path.join(self.cache_dir.name, '.mypy_cache'))
|
|
|
|
|
|
def test_python_evaluation(testcase: DataDrivenTestCase, cache_dir: str) -> None:
|
|
"""Runs Mypy in a subprocess.
|
|
|
|
If this passes without errors, executes the script again with a given Python
|
|
version.
|
|
"""
|
|
assert testcase.old_cwd is not None, "test was not properly set up"
|
|
# We must enable site packages to get access to installed stubs.
|
|
# TODO: Enable strict optional for these tests
|
|
mypy_cmdline = [
|
|
'--show-traceback',
|
|
'--no-strict-optional',
|
|
'--no-silence-site-packages',
|
|
'--no-error-summary',
|
|
]
|
|
py2 = testcase.name.lower().endswith('python2')
|
|
if py2:
|
|
mypy_cmdline.append('--py2')
|
|
interpreter = try_find_python2_interpreter()
|
|
if interpreter is None:
|
|
# Skip, can't find a Python 2 interpreter.
|
|
pytest.skip()
|
|
# placate the type checker
|
|
return
|
|
else:
|
|
interpreter = python3_path
|
|
mypy_cmdline.append(f"--python-version={'.'.join(map(str, PYTHON3_VERSION))}")
|
|
|
|
m = re.search('# flags: (.*)$', '\n'.join(testcase.input), re.MULTILINE)
|
|
if m:
|
|
mypy_cmdline.extend(m.group(1).split())
|
|
|
|
# Write the program to a file.
|
|
program = '_' + testcase.name + '.py'
|
|
program_path = os.path.join(test_temp_dir, program)
|
|
mypy_cmdline.append(program_path)
|
|
with open(program_path, 'w', encoding='utf8') as file:
|
|
for s in testcase.input:
|
|
file.write(f'{s}\n')
|
|
mypy_cmdline.append(f'--cache-dir={cache_dir}')
|
|
output = []
|
|
# Type check the program.
|
|
out, err, returncode = api.run(mypy_cmdline)
|
|
# split lines, remove newlines, and remove directory of test case
|
|
for line in (out + err).splitlines():
|
|
if line.startswith(test_temp_dir + os.sep):
|
|
output.append(line[len(test_temp_dir + os.sep):].rstrip("\r\n"))
|
|
else:
|
|
# Normalize paths so that the output is the same on Windows and Linux/macOS.
|
|
line = line.replace(test_temp_dir + os.sep, test_temp_dir + '/')
|
|
output.append(line.rstrip("\r\n"))
|
|
if returncode == 0:
|
|
# Execute the program.
|
|
proc = subprocess.run([interpreter, '-Wignore', program],
|
|
cwd=test_temp_dir, stdout=PIPE, stderr=PIPE)
|
|
output.extend(split_lines(proc.stdout, proc.stderr))
|
|
# Remove temp file.
|
|
os.remove(program_path)
|
|
for i, line in enumerate(output):
|
|
if os.path.sep + 'typeshed' + os.path.sep in line:
|
|
output[i] = line.split(os.path.sep)[-1]
|
|
assert_string_arrays_equal(adapt_output(testcase), output,
|
|
'Invalid output ({}, line {})'.format(
|
|
testcase.file, testcase.line))
|
|
|
|
|
|
def adapt_output(testcase: DataDrivenTestCase) -> List[str]:
|
|
"""Translates the generic _program.py into the actual filename."""
|
|
program = '_' + testcase.name + '.py'
|
|
return [program_re.sub(program, line) for line in testcase.output]
|