149 lines
4.8 KiB
Python
149 lines
4.8 KiB
Python
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"""Test cases for the command line.
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To begin we test that "mypy <directory>[/]" always recurses down the
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whole tree.
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"""
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import os
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import re
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import subprocess
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import sys
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from typing import List
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from typing import Optional
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from mypy.test.config import test_temp_dir, PREFIX
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from mypy.test.data import DataDrivenTestCase, DataSuite
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from mypy.test.helpers import (
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assert_string_arrays_equal, normalize_error_messages, check_test_output_files
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)
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try:
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import lxml # type: ignore
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except ImportError:
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lxml = None
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import pytest
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# Path to Python 3 interpreter
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python3_path = sys.executable
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# Files containing test case descriptions.
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cmdline_files = [
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'cmdline.test',
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'cmdline.pyproject.test',
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'reports.test',
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'envvars.test',
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]
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class PythonCmdlineSuite(DataSuite):
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files = cmdline_files
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native_sep = True
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def run_case(self, testcase: DataDrivenTestCase) -> None:
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if lxml is None and os.path.basename(testcase.file) == 'reports.test':
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pytest.skip("Cannot import lxml. Is it installed?")
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for step in [1] + sorted(testcase.output2):
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test_python_cmdline(testcase, step)
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def test_python_cmdline(testcase: DataDrivenTestCase, step: int) -> None:
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assert testcase.old_cwd is not None, "test was not properly set up"
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# Write the program to a file.
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program = '_program.py'
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program_path = os.path.join(test_temp_dir, program)
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with open(program_path, 'w', encoding='utf8') as file:
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for s in testcase.input:
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file.write(f'{s}\n')
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args = parse_args(testcase.input[0])
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custom_cwd = parse_cwd(testcase.input[1]) if len(testcase.input) > 1 else None
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args.append('--show-traceback')
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if '--error-summary' not in args:
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args.append('--no-error-summary')
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# Type check the program.
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fixed = [python3_path, '-m', 'mypy']
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env = os.environ.copy()
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env.pop('COLUMNS', None)
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extra_path = os.path.join(os.path.abspath(test_temp_dir), 'pypath')
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env['PYTHONPATH'] = PREFIX
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if os.path.isdir(extra_path):
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env['PYTHONPATH'] += os.pathsep + extra_path
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process = subprocess.Popen(fixed + args,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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cwd=os.path.join(
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test_temp_dir,
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custom_cwd or ""
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),
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env=env)
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outb, errb = process.communicate()
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result = process.returncode
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# Split output into lines.
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out = [s.rstrip('\n\r') for s in str(outb, 'utf8').splitlines()]
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err = [s.rstrip('\n\r') for s in str(errb, 'utf8').splitlines()]
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if "PYCHARM_HOSTED" in os.environ:
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for pos, line in enumerate(err):
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if line.startswith('pydev debugger: '):
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# Delete the attaching debugger message itself, plus the extra newline added.
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del err[pos:pos + 2]
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break
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# Remove temp file.
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os.remove(program_path)
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# Compare actual output to expected.
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if testcase.output_files:
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# Ignore stdout, but we insist on empty stderr and zero status.
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if err or result:
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raise AssertionError(
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'Expected zero status and empty stderr%s, got %d and\n%s' %
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(' on step %d' % step if testcase.output2 else '',
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result, '\n'.join(err + out)))
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check_test_output_files(testcase, step)
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else:
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if testcase.normalize_output:
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out = normalize_error_messages(err + out)
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obvious_result = 1 if out else 0
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if obvious_result != result:
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out.append(f'== Return code: {result}')
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expected_out = testcase.output if step == 1 else testcase.output2[step]
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# Strip "tmp/" out of the test so that # E: works...
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expected_out = [s.replace("tmp" + os.sep, "") for s in expected_out]
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assert_string_arrays_equal(expected_out, out,
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'Invalid output ({}, line {}){}'.format(
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testcase.file, testcase.line,
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' on step %d' % step if testcase.output2 else ''))
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def parse_args(line: str) -> List[str]:
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"""Parse the first line of the program for the command line.
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This should have the form
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# cmd: mypy <options>
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For example:
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# cmd: mypy pkg/
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"""
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m = re.match('# cmd: mypy (.*)$', line)
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if not m:
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return [] # No args; mypy will spit out an error.
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return m.group(1).split()
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def parse_cwd(line: str) -> Optional[str]:
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"""Parse the second line of the program for the command line.
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This should have the form
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# cwd: <directory>
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For example:
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# cwd: main/subdir
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"""
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m = re.match('# cwd: (.*)$', line)
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return m.group(1) if m else None
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