Staging
v0.8.1
v0.8.1
https://github.com/python/cpython
Tip revision: 74f4bd53e03ded8408bcc2de67cf0f5a4ac5b1a1 authored by Barry Warsaw on 23 February 2012, 15:59:38 UTC
Bump some more copyright years (as per PEP 101), since this is the first
Bump some more copyright years (as per PEP 101), since this is the first
Tip revision: 74f4bd5
test_runpy.py
# Test the runpy module
import unittest
import os
import os.path
import sys
import tempfile
from test.test_support import verbose, run_unittest, forget
from runpy import _run_code, _run_module_code, run_module
# Note: This module can't safely test _run_module_as_main as it
# runs its tests in the current process, which would mess with the
# real __main__ module (usually test.regrtest)
# See test_cmd_line_script for a test that executes that code path
# Set up the test code and expected results
class RunModuleCodeTest(unittest.TestCase):
expected_result = ["Top level assignment", "Lower level reference"]
test_source = (
"# Check basic code execution\n"
"result = ['Top level assignment']\n"
"def f():\n"
" result.append('Lower level reference')\n"
"f()\n"
"# Check the sys module\n"
"import sys\n"
"run_argv0 = sys.argv[0]\n"
"run_name_in_sys_modules = __name__ in sys.modules\n"
"if run_name_in_sys_modules:\n"
" module_in_sys_modules = globals() is sys.modules[__name__].__dict__\n"
"# Check nested operation\n"
"import runpy\n"
"nested = runpy._run_module_code('x=1\\n', mod_name='<run>')\n"
)
def test_run_code(self):
saved_argv0 = sys.argv[0]
d = _run_code(self.test_source, {})
self.failUnless(d["result"] == self.expected_result)
self.failUnless(d["__name__"] is None)
self.failUnless(d["__file__"] is None)
self.failUnless(d["__loader__"] is None)
self.failUnless(d["__package__"] is None)
self.failUnless(d["run_argv0"] is saved_argv0)
self.failUnless("run_name" not in d)
self.failUnless(sys.argv[0] is saved_argv0)
def test_run_module_code(self):
initial = object()
name = "<Nonsense>"
file = "Some other nonsense"
loader = "Now you're just being silly"
package = '' # Treat as a top level module
d1 = dict(initial=initial)
saved_argv0 = sys.argv[0]
d2 = _run_module_code(self.test_source,
d1,
name,
file,
loader,
package)
self.failUnless("result" not in d1)
self.failUnless(d2["initial"] is initial)
self.failUnless(d2["result"] == self.expected_result)
self.failUnless(d2["nested"]["x"] == 1)
self.failUnless(d2["__name__"] is name)
self.failUnless(d2["run_name_in_sys_modules"])
self.failUnless(d2["module_in_sys_modules"])
self.failUnless(d2["__file__"] is file)
self.failUnless(d2["run_argv0"] is file)
self.failUnless(d2["__loader__"] is loader)
self.failUnless(d2["__package__"] is package)
self.failUnless(sys.argv[0] is saved_argv0)
self.failUnless(name not in sys.modules)
class RunModuleTest(unittest.TestCase):
def expect_import_error(self, mod_name):
try:
run_module(mod_name)
except ImportError:
pass
else:
self.fail("Expected import error for " + mod_name)
def test_invalid_names(self):
# Builtin module
self.expect_import_error("sys")
# Non-existent modules
self.expect_import_error("sys.imp.eric")
self.expect_import_error("os.path.half")
self.expect_import_error("a.bee")
self.expect_import_error(".howard")
self.expect_import_error("..eaten")
# Package
self.expect_import_error("logging")
def test_library_module(self):
run_module("runpy")
def _add_pkg_dir(self, pkg_dir):
os.mkdir(pkg_dir)
pkg_fname = os.path.join(pkg_dir, "__init__"+os.extsep+"py")
pkg_file = open(pkg_fname, "w")
pkg_file.close()
return pkg_fname
def _make_pkg(self, source, depth):
pkg_name = "__runpy_pkg__"
test_fname = "runpy_test"+os.extsep+"py"
pkg_dir = sub_dir = tempfile.mkdtemp()
if verbose: print " Package tree in:", sub_dir
sys.path.insert(0, pkg_dir)
if verbose: print " Updated sys.path:", sys.path[0]
for i in range(depth):
sub_dir = os.path.join(sub_dir, pkg_name)
pkg_fname = self._add_pkg_dir(sub_dir)
if verbose: print " Next level in:", sub_dir
if verbose: print " Created:", pkg_fname
mod_fname = os.path.join(sub_dir, test_fname)
mod_file = open(mod_fname, "w")
mod_file.write(source)
mod_file.close()
if verbose: print " Created:", mod_fname
mod_name = (pkg_name+".")*depth + "runpy_test"
return pkg_dir, mod_fname, mod_name
def _del_pkg(self, top, depth, mod_name):
for entry in list(sys.modules):
if entry.startswith("__runpy_pkg__"):
del sys.modules[entry]
if verbose: print " Removed sys.modules entries"
del sys.path[0]
if verbose: print " Removed sys.path entry"
for root, dirs, files in os.walk(top, topdown=False):
for name in files:
try:
os.remove(os.path.join(root, name))
except OSError, ex:
if verbose: print ex # Persist with cleaning up
for name in dirs:
fullname = os.path.join(root, name)
try:
os.rmdir(fullname)
except OSError, ex:
if verbose: print ex # Persist with cleaning up
try:
os.rmdir(top)
if verbose: print " Removed package tree"
except OSError, ex:
if verbose: print ex # Persist with cleaning up
def _check_module(self, depth):
pkg_dir, mod_fname, mod_name = (
self._make_pkg("x=1\n", depth))
forget(mod_name)
try:
if verbose: print "Running from source:", mod_name
d1 = run_module(mod_name) # Read from source
self.failUnless("x" in d1)
self.failUnless(d1["x"] == 1)
del d1 # Ensure __loader__ entry doesn't keep file open
__import__(mod_name)
os.remove(mod_fname)
if verbose: print "Running from compiled:", mod_name
d2 = run_module(mod_name) # Read from bytecode
self.failUnless("x" in d2)
self.failUnless(d2["x"] == 1)
del d2 # Ensure __loader__ entry doesn't keep file open
finally:
self._del_pkg(pkg_dir, depth, mod_name)
if verbose: print "Module executed successfully"
def _add_relative_modules(self, base_dir, source, depth):
if depth <= 1:
raise ValueError("Relative module test needs depth > 1")
pkg_name = "__runpy_pkg__"
module_dir = base_dir
for i in range(depth):
parent_dir = module_dir
module_dir = os.path.join(module_dir, pkg_name)
# Add sibling module
sibling_fname = os.path.join(module_dir, "sibling"+os.extsep+"py")
sibling_file = open(sibling_fname, "w")
sibling_file.close()
if verbose: print " Added sibling module:", sibling_fname
# Add nephew module
uncle_dir = os.path.join(parent_dir, "uncle")
self._add_pkg_dir(uncle_dir)
if verbose: print " Added uncle package:", uncle_dir
cousin_dir = os.path.join(uncle_dir, "cousin")
self._add_pkg_dir(cousin_dir)
if verbose: print " Added cousin package:", cousin_dir
nephew_fname = os.path.join(cousin_dir, "nephew"+os.extsep+"py")
nephew_file = open(nephew_fname, "w")
nephew_file.close()
if verbose: print " Added nephew module:", nephew_fname
def _check_relative_imports(self, depth, run_name=None):
contents = r"""\
from __future__ import absolute_import
from . import sibling
from ..uncle.cousin import nephew
"""
pkg_dir, mod_fname, mod_name = (
self._make_pkg(contents, depth))
try:
self._add_relative_modules(pkg_dir, contents, depth)
pkg_name = mod_name.rpartition('.')[0]
if verbose: print "Running from source:", mod_name
d1 = run_module(mod_name, run_name=run_name) # Read from source
self.failUnless("__package__" in d1)
self.failUnless(d1["__package__"] == pkg_name)
self.failUnless("sibling" in d1)
self.failUnless("nephew" in d1)
del d1 # Ensure __loader__ entry doesn't keep file open
__import__(mod_name)
os.remove(mod_fname)
if verbose: print "Running from compiled:", mod_name
d2 = run_module(mod_name, run_name=run_name) # Read from bytecode
self.failUnless("__package__" in d2)
self.failUnless(d2["__package__"] == pkg_name)
self.failUnless("sibling" in d2)
self.failUnless("nephew" in d2)
del d2 # Ensure __loader__ entry doesn't keep file open
finally:
self._del_pkg(pkg_dir, depth, mod_name)
if verbose: print "Module executed successfully"
def test_run_module(self):
for depth in range(4):
if verbose: print "Testing package depth:", depth
self._check_module(depth)
def test_explicit_relative_import(self):
for depth in range(2, 5):
if verbose: print "Testing relative imports at depth:", depth
self._check_relative_imports(depth)
def test_main_relative_import(self):
for depth in range(2, 5):
if verbose: print "Testing main relative imports at depth:", depth
self._check_relative_imports(depth, "__main__")
def test_main():
run_unittest(RunModuleCodeTest)
run_unittest(RunModuleTest)
if __name__ == "__main__":
test_main()