# 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()