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Edit File : script_helper.py \| Size : 5.67 KB
# Common utility functions used by various script execution tests # e.g. test_cmd_line, test_cmd_line_script and test_runpy import sys import os import re import os.path import tempfile import subprocess import py_compile import contextlib import shutil try: import zipfile except ImportError: # If Python is build without Unicode support, importing _io will # fail, which, in turn, means that zipfile cannot be imported # Most of this module can then still be used. pass from test.support import strip_python_stderr # Executing the interpreter in a subprocess def _assert_python(expected_success, args, env_vars): cmd_line = [sys.executable] if not env_vars: cmd_line.append('-E') cmd_line.extend(args) # Need to preserve the original environment, for in-place testing of # shared library builds. env = os.environ.copy() env.update(env_vars) p = subprocess.Popen(cmd_line, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=env) try: out, err = p.communicate() finally: subprocess._cleanup() p.stdout.close() p.stderr.close() rc = p.returncode err = strip_python_stderr(err) if (rc and expected_success) or (not rc and not expected_success): raise AssertionError( "Process return code is %d, " "stderr follows:\n%s" % (rc, err.decode('ascii', 'ignore'))) return rc, out, err def assert_python_ok(args, *env_vars): """ Assert that running the interpreter with `args` and optional environment variables `env_vars` is ok and return a (return code, stdout, stderr) tuple. """ return _assert_python(True, args, *env_vars) def assert_python_failure(args, *env_vars): """ Assert that running the interpreter with `args` and optional environment variables `env_vars` fails and return a (return code, stdout, stderr) tuple. """ return _assert_python(False, args, *env_vars) def python_exit_code(args): cmd_line = [sys.executable, '-E'] cmd_line.extend(args) with open(os.devnull, 'w') as devnull: return subprocess.call(cmd_line, stdout=devnull, stderr=subprocess.STDOUT) def spawn_python(args, kwargs): cmd_line = [sys.executable, '-E'] cmd_line.extend(args) return subprocess.Popen(cmd_line, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, kwargs) def kill_python(p): p.stdin.close() data = p.stdout.read() p.stdout.close() # try to cleanup the child so we don't appear to leak when running # with regrtest -R. p.wait() subprocess._cleanup() return data def run_python(args, *kwargs): if __debug__: p = spawn_python(args, *kwargs) else: p = spawn_python('-O', args, *kwargs) stdout_data = kill_python(p) return p.wait(), stdout_data # Script creation utilities @contextlib.contextmanager def temp_dir(): dirname = tempfile.mkdtemp() dirname = os.path.realpath(dirname) try: yield dirname finally: shutil.rmtree(dirname) def make_script(script_dir, script_basename, source): script_filename = script_basename+os.extsep+'py' script_name = os.path.join(script_dir, script_filename) script_file = open(script_name, 'w') script_file.write(source) script_file.close() return script_name def compile_script(script_name): py_compile.compile(script_name, doraise=True) if __debug__: compiled_name = script_name + 'c' else: compiled_name = script_name + 'o' return compiled_name def make_zip_script(zip_dir, zip_basename, script_name, name_in_zip=None): zip_filename = zip_basename+os.extsep+'zip' zip_name = os.path.join(zip_dir, zip_filename) zip_file = zipfile.ZipFile(zip_name, 'w') if name_in_zip is None: name_in_zip = os.path.basename(script_name) zip_file.write(script_name, name_in_zip) zip_file.close() #if test.test_support.verbose: # zip_file = zipfile.ZipFile(zip_name, 'r') # print 'Contents of %r:' % zip_name # zip_file.printdir() # zip_file.close() return zip_name, os.path.join(zip_name, name_in_zip) def make_pkg(pkg_dir, init_source=''): os.mkdir(pkg_dir) make_script(pkg_dir, '__init__', init_source) def make_zip_pkg(zip_dir, zip_basename, pkg_name, script_basename, source, depth=1, compiled=False): unlink = [] init_name = make_script(zip_dir, '__init__', '') unlink.append(init_name) init_basename = os.path.basename(init_name) script_name = make_script(zip_dir, script_basename, source) unlink.append(script_name) if compiled: init_name = compile_script(init_name) script_name = compile_script(script_name) unlink.extend((init_name, script_name)) pkg_names = [os.sep.join([pkg_name]i) for i in range(1, depth+1)] script_name_in_zip = os.path.join(pkg_names[-1], os.path.basename(script_name)) zip_filename = zip_basename+os.extsep+'zip' zip_name = os.path.join(zip_dir, zip_filename) zip_file = zipfile.ZipFile(zip_name, 'w') for name in pkg_names: init_name_in_zip = os.path.join(name, init_basename) zip_file.write(init_name, init_name_in_zip) zip_file.write(script_name, script_name_in_zip) zip_file.close() for name in unlink: os.unlink(name) #if test.test_support.verbose: # zip_file = zipfile.ZipFile(zip_name, 'r') # print 'Contents of %r:' % zip_name # zip_file.printdir() # zip_file.close() return zip_name, os.path.join(zip_name, script_name_in_zip) Back

Edit File : script_helper.py | Size : 5.67 KB

# Common utility functions used by various script execution tests
#  e.g. test_cmd_line, test_cmd_line_script and test_runpy

import sys
import os
import re
import os.path
import tempfile
import subprocess
import py_compile
import contextlib
import shutil
try:
    import zipfile
except ImportError:
    # If Python is build without Unicode support, importing _io will
    # fail, which, in turn, means that zipfile cannot be imported
    # Most of this module can then still be used.
    pass

from test.support import strip_python_stderr

# Executing the interpreter in a subprocess
def _assert_python(expected_success, *args, **env_vars):
    cmd_line = [sys.executable]
    if not env_vars:
        cmd_line.append('-E')
    cmd_line.extend(args)
    # Need to preserve the original environment, for in-place testing of
    # shared library builds.
    env = os.environ.copy()
    env.update(env_vars)
    p = subprocess.Popen(cmd_line, stdin=subprocess.PIPE,
                         stdout=subprocess.PIPE, stderr=subprocess.PIPE,
                         env=env)
    try:
        out, err = p.communicate()
    finally:
        subprocess._cleanup()
        p.stdout.close()
        p.stderr.close()
    rc = p.returncode
    err =  strip_python_stderr(err)
    if (rc and expected_success) or (not rc and not expected_success):
        raise AssertionError(
            "Process return code is %d, "
            "stderr follows:\n%s" % (rc, err.decode('ascii', 'ignore')))
    return rc, out, err

def assert_python_ok(*args, **env_vars):
    """
    Assert that running the interpreter with `args` and optional environment
    variables `env_vars` is ok and return a (return code, stdout, stderr) tuple.
    """
    return _assert_python(True, *args, **env_vars)

def assert_python_failure(*args, **env_vars):
    """
    Assert that running the interpreter with `args` and optional environment
    variables `env_vars` fails and return a (return code, stdout, stderr) tuple.
    """
    return _assert_python(False, *args, **env_vars)

def python_exit_code(*args):
    cmd_line = [sys.executable, '-E']
    cmd_line.extend(args)
    with open(os.devnull, 'w') as devnull:
        return subprocess.call(cmd_line, stdout=devnull,
                                stderr=subprocess.STDOUT)

def spawn_python(*args, **kwargs):
    cmd_line = [sys.executable, '-E']
    cmd_line.extend(args)
    return subprocess.Popen(cmd_line, stdin=subprocess.PIPE,
                            stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
                            **kwargs)

def kill_python(p):
    p.stdin.close()
    data = p.stdout.read()
    p.stdout.close()
    # try to cleanup the child so we don't appear to leak when running
    # with regrtest -R.
    p.wait()
    subprocess._cleanup()
    return data

def run_python(*args, **kwargs):
    if __debug__:
        p = spawn_python(*args, **kwargs)
    else:
        p = spawn_python('-O', *args, **kwargs)
    stdout_data = kill_python(p)
    return p.wait(), stdout_data

# Script creation utilities
@contextlib.contextmanager
def temp_dir():
    dirname = tempfile.mkdtemp()
    dirname = os.path.realpath(dirname)
    try:
        yield dirname
    finally:
        shutil.rmtree(dirname)

def make_script(script_dir, script_basename, source):
    script_filename = script_basename+os.extsep+'py'
    script_name = os.path.join(script_dir, script_filename)
    script_file = open(script_name, 'w')
    script_file.write(source)
    script_file.close()
    return script_name

def compile_script(script_name):
    py_compile.compile(script_name, doraise=True)
    if __debug__:
        compiled_name = script_name + 'c'
    else:
        compiled_name = script_name + 'o'
    return compiled_name

def make_zip_script(zip_dir, zip_basename, script_name, name_in_zip=None):
    zip_filename = zip_basename+os.extsep+'zip'
    zip_name = os.path.join(zip_dir, zip_filename)
    zip_file = zipfile.ZipFile(zip_name, 'w')
    if name_in_zip is None:
        name_in_zip = os.path.basename(script_name)
    zip_file.write(script_name, name_in_zip)
    zip_file.close()
    #if test.test_support.verbose:
    #    zip_file = zipfile.ZipFile(zip_name, 'r')
    #    print 'Contents of %r:' % zip_name
    #    zip_file.printdir()
    #    zip_file.close()
    return zip_name, os.path.join(zip_name, name_in_zip)

def make_pkg(pkg_dir, init_source=''):
    os.mkdir(pkg_dir)
    make_script(pkg_dir, '__init__', init_source)

def make_zip_pkg(zip_dir, zip_basename, pkg_name, script_basename,
                 source, depth=1, compiled=False):
    unlink = []
    init_name = make_script(zip_dir, '__init__', '')
    unlink.append(init_name)
    init_basename = os.path.basename(init_name)
    script_name = make_script(zip_dir, script_basename, source)
    unlink.append(script_name)
    if compiled:
        init_name = compile_script(init_name)
        script_name = compile_script(script_name)
        unlink.extend((init_name, script_name))
    pkg_names = [os.sep.join([pkg_name]*i) for i in range(1, depth+1)]
    script_name_in_zip = os.path.join(pkg_names[-1], os.path.basename(script_name))
    zip_filename = zip_basename+os.extsep+'zip'
    zip_name = os.path.join(zip_dir, zip_filename)
    zip_file = zipfile.ZipFile(zip_name, 'w')
    for name in pkg_names:
        init_name_in_zip = os.path.join(name, init_basename)
        zip_file.write(init_name, init_name_in_zip)
    zip_file.write(script_name, script_name_in_zip)
    zip_file.close()
    for name in unlink:
        os.unlink(name)
    #if test.test_support.verbose:
    #    zip_file = zipfile.ZipFile(zip_name, 'r')
    #    print 'Contents of %r:' % zip_name
    #    zip_file.printdir()
    #    zip_file.close()
    return zip_name, os.path.join(zip_name, script_name_in_zip)

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