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# Tests command line execution of scripts
import unittest
import os
import os.path
import sys
import test.test_support
import tempfile
import subprocess
import py_compile
import contextlib
import shutil
import zipfile
verbose = test.test_support.verbose
# XXX ncoghlan: Should we consider moving these to test_support?
from test_cmd_line import _spawn_python, _kill_python
def _run_python(*args):
if __debug__:
p = _spawn_python(*args)
else:
p = _spawn_python('-O', *args)
stdout_data = _kill_python(p)
return p.wait(), stdout_data
@contextlib.contextmanager
def temp_dir():
dirname = tempfile.mkdtemp()
dirname = os.path.realpath(dirname)
try:
yield dirname
finally:
shutil.rmtree(dirname)
test_source = """\
# Script may be run with optimisation enabled, so don't rely on assert
# statements being executed
def assertEqual(lhs, rhs):
if lhs != rhs:
raise AssertionError('%r != %r' % (lhs, rhs))
def assertIdentical(lhs, rhs):
if lhs is not rhs:
raise AssertionError('%r is not %r' % (lhs, rhs))
# Check basic code execution
result = ['Top level assignment']
def f():
result.append('Lower level reference')
f()
assertEqual(result, ['Top level assignment', 'Lower level reference'])
# Check population of magic variables
assertEqual(__name__, '__main__')
print '__file__==%r' % __file__
print '__package__==%r' % __package__
# Check the sys module
import sys
assertIdentical(globals(), sys.modules[__name__].__dict__)
print 'sys.argv[0]==%r' % sys.argv[0]
"""
def _make_test_script(script_dir, script_basename, source=test_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_test_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_test_zip(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 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_test_pkg(pkg_dir):
os.mkdir(pkg_dir)
_make_test_script(pkg_dir, '__init__', '')
def _make_test_zip_pkg(zip_dir, zip_basename, pkg_name, script_basename,
source=test_source, depth=1):
init_name = _make_test_script(zip_dir, '__init__', '')
init_basename = os.path.basename(init_name)
script_name = _make_test_script(zip_dir, script_basename, source)
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()
os.unlink(init_name)
os.unlink(script_name)
#if 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)
# There's no easy way to pass the script directory in to get
# -m to work (avoiding that is the whole point of making
# directories and zipfiles executable!)
# So we fake it for testing purposes with a custom launch script
launch_source = """\
import sys, os.path, runpy
sys.path.insert(0, %s)
runpy._run_module_as_main(%r)
"""
def _make_launch_script(script_dir, script_basename, module_name, path=None):
if path is None:
path = "os.path.dirname(__file__)"
else:
path = repr(path)
source = launch_source % (path, module_name)
return _make_test_script(script_dir, script_basename, source)
class CmdLineTest(unittest.TestCase):
def _check_script(self, script_name, expected_file,
expected_argv0, expected_package,
*cmd_line_switches):
run_args = cmd_line_switches + (script_name,)
exit_code, data = _run_python(*run_args)
if verbose:
print 'Output from test script %r:' % script_name
print data
self.assertEqual(exit_code, 0)
printed_file = '__file__==%r' % expected_file
printed_argv0 = 'sys.argv[0]==%r' % expected_argv0
printed_package = '__package__==%r' % expected_package
if verbose:
print 'Expected output:'
print printed_file
print printed_package
print printed_argv0
self.assert_(printed_file in data)
self.assert_(printed_package in data)
self.assert_(printed_argv0 in data)
def test_basic_script(self):
with temp_dir() as script_dir:
script_name = _make_test_script(script_dir, 'script')
self._check_script(script_name, script_name, script_name, None)
def test_script_compiled(self):
with temp_dir() as script_dir:
script_name = _make_test_script(script_dir, 'script')
compiled_name = _compile_test_script(script_name)
os.remove(script_name)
self._check_script(compiled_name, compiled_name, compiled_name, None)
def test_directory(self):
with temp_dir() as script_dir:
script_name = _make_test_script(script_dir, '__main__')
self._check_script(script_dir, script_name, script_dir, '')
def test_directory_compiled(self):
with temp_dir() as script_dir:
script_name = _make_test_script(script_dir, '__main__')
compiled_name = _compile_test_script(script_name)
os.remove(script_name)
self._check_script(script_dir, compiled_name, script_dir, '')
def test_zipfile(self):
with temp_dir() as script_dir:
script_name = _make_test_script(script_dir, '__main__')
zip_name, run_name = _make_test_zip(script_dir, 'test_zip', script_name)
self._check_script(zip_name, run_name, zip_name, '')
def test_zipfile_compiled(self):
with temp_dir() as script_dir:
script_name = _make_test_script(script_dir, '__main__')
compiled_name = _compile_test_script(script_name)
zip_name, run_name = _make_test_zip(script_dir, 'test_zip', compiled_name)
self._check_script(zip_name, run_name, zip_name, '')
def test_module_in_package(self):
with temp_dir() as script_dir:
pkg_dir = os.path.join(script_dir, 'test_pkg')
_make_test_pkg(pkg_dir)
script_name = _make_test_script(pkg_dir, 'script')
launch_name = _make_launch_script(script_dir, 'launch', 'test_pkg.script')
self._check_script(launch_name, script_name, script_name, 'test_pkg')
def test_module_in_package_in_zipfile(self):
with temp_dir() as script_dir:
zip_name, run_name = _make_test_zip_pkg(script_dir, 'test_zip', 'test_pkg', 'script')
launch_name = _make_launch_script(script_dir, 'launch', 'test_pkg.script', zip_name)
self._check_script(launch_name, run_name, run_name, 'test_pkg')
def test_module_in_subpackage_in_zipfile(self):
with temp_dir() as script_dir:
zip_name, run_name = _make_test_zip_pkg(script_dir, 'test_zip', 'test_pkg', 'script', depth=2)
launch_name = _make_launch_script(script_dir, 'launch', 'test_pkg.test_pkg.script', zip_name)
self._check_script(launch_name, run_name, run_name, 'test_pkg.test_pkg')
def test_main():
test.test_support.run_unittest(CmdLineTest)
test.test_support.reap_children()
if __name__ == '__main__':
test_main()
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