/usr/lib/python2.7/test/test_modulefinder.py is in libpython2.7-testsuite 2.7.15~rc1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import os
import unittest
import distutils.dir_util
import tempfile
from test import test_support
try: set
except NameError: from sets import Set as set
import modulefinder
# Note: To test modulefinder with Python 2.2, sets.py and
# modulefinder.py must be available - they are not in the standard
# library.
TEST_DIR = tempfile.mkdtemp()
TEST_PATH = [TEST_DIR, os.path.dirname(__future__.__file__)]
# Each test description is a list of 5 items:
#
# 1. a module name that will be imported by modulefinder
# 2. a list of module names that modulefinder is required to find
# 3. a list of module names that modulefinder should complain
# about because they are not found
# 4. a list of module names that modulefinder should complain
# about because they MAY be not found
# 5. a string specifying packages to create; the format is obvious imo.
#
# Each package will be created in TEST_DIR, and TEST_DIR will be
# removed after the tests again.
# Modulefinder searches in a path that contains TEST_DIR, plus
# the standard Lib directory.
maybe_test = [
"a.module",
["a", "a.module", "sys",
"b"],
["c"], ["b.something"],
"""\
a/__init__.py
a/module.py
from b import something
from c import something
b/__init__.py
from sys import *
"""]
maybe_test_new = [
"a.module",
["a", "a.module", "sys",
"b", "__future__"],
["c"], ["b.something"],
"""\
a/__init__.py
a/module.py
from b import something
from c import something
b/__init__.py
from __future__ import absolute_import
from sys import *
"""]
package_test = [
"a.module",
["a", "a.b", "a.c", "a.module", "mymodule", "sys"],
["blahblah"], [],
"""\
mymodule.py
a/__init__.py
import blahblah
from a import b
import c
a/module.py
import sys
from a import b as x
from a.c import sillyname
a/b.py
a/c.py
from a.module import x
import mymodule as sillyname
from sys import version_info
"""]
absolute_import_test = [
"a.module",
["a", "a.module",
"b", "b.x", "b.y", "b.z",
"__future__", "sys", "exceptions"],
["blahblah"], [],
"""\
mymodule.py
a/__init__.py
a/module.py
from __future__ import absolute_import
import sys # sys
import blahblah # fails
import exceptions # exceptions
import b.x # b.x
from b import y # b.y
from b.z import * # b.z.*
a/exceptions.py
a/sys.py
import mymodule
a/b/__init__.py
a/b/x.py
a/b/y.py
a/b/z.py
b/__init__.py
import z
b/unused.py
b/x.py
b/y.py
b/z.py
"""]
relative_import_test = [
"a.module",
["__future__",
"a", "a.module",
"a.b", "a.b.y", "a.b.z",
"a.b.c", "a.b.c.moduleC",
"a.b.c.d", "a.b.c.e",
"a.b.x",
"exceptions"],
[], [],
"""\
mymodule.py
a/__init__.py
from .b import y, z # a.b.y, a.b.z
a/module.py
from __future__ import absolute_import # __future__
import exceptions # exceptions
a/exceptions.py
a/sys.py
a/b/__init__.py
from ..b import x # a.b.x
#from a.b.c import moduleC
from .c import moduleC # a.b.moduleC
a/b/x.py
a/b/y.py
a/b/z.py
a/b/g.py
a/b/c/__init__.py
from ..c import e # a.b.c.e
a/b/c/moduleC.py
from ..c import d # a.b.c.d
a/b/c/d.py
a/b/c/e.py
a/b/c/x.py
"""]
relative_import_test_2 = [
"a.module",
["a", "a.module",
"a.sys",
"a.b", "a.b.y", "a.b.z",
"a.b.c", "a.b.c.d",
"a.b.c.e",
"a.b.c.moduleC",
"a.b.c.f",
"a.b.x",
"a.another"],
[], [],
"""\
mymodule.py
a/__init__.py
from . import sys # a.sys
a/another.py
a/module.py
from .b import y, z # a.b.y, a.b.z
a/exceptions.py
a/sys.py
a/b/__init__.py
from .c import moduleC # a.b.c.moduleC
from .c import d # a.b.c.d
a/b/x.py
a/b/y.py
a/b/z.py
a/b/c/__init__.py
from . import e # a.b.c.e
a/b/c/moduleC.py
#
from . import f # a.b.c.f
from .. import x # a.b.x
from ... import another # a.another
a/b/c/d.py
a/b/c/e.py
a/b/c/f.py
"""]
relative_import_test_3 = [
"a.module",
["a", "a.module"],
["a.bar"],
[],
"""\
a/__init__.py
def foo(): pass
a/module.py
from . import foo
from . import bar
"""]
def open_file(path):
##print "#", os.path.abspath(path)
dirname = os.path.dirname(path)
distutils.dir_util.mkpath(dirname)
return open(path, "w")
def create_package(source):
ofi = None
try:
for line in source.splitlines():
if line.startswith(" ") or line.startswith("\t"):
ofi.write(line.strip() + "\n")
else:
if ofi:
ofi.close()
ofi = open_file(os.path.join(TEST_DIR, line.strip()))
finally:
if ofi:
ofi.close()
class ModuleFinderTest(unittest.TestCase):
def _do_test(self, info, report=False):
import_this, modules, missing, maybe_missing, source = info
create_package(source)
try:
mf = modulefinder.ModuleFinder(path=TEST_PATH)
mf.import_hook(import_this)
if report:
mf.report()
## # This wouldn't work in general when executed several times:
## opath = sys.path[:]
## sys.path = TEST_PATH
## try:
## __import__(import_this)
## except:
## import traceback; traceback.print_exc()
## sys.path = opath
## return
modules = set(modules)
found = set(mf.modules.keys())
more = list(found - modules)
less = list(modules - found)
# check if we found what we expected, not more, not less
self.assertEqual((more, less), ([], []))
# check for missing and maybe missing modules
bad, maybe = mf.any_missing_maybe()
self.assertEqual(bad, missing)
self.assertEqual(maybe, maybe_missing)
finally:
distutils.dir_util.remove_tree(TEST_DIR)
def test_package(self):
self._do_test(package_test)
def test_maybe(self):
self._do_test(maybe_test)
if getattr(__future__, "absolute_import", None):
def test_maybe_new(self):
self._do_test(maybe_test_new)
def test_absolute_imports(self):
self._do_test(absolute_import_test)
def test_relative_imports(self):
self._do_test(relative_import_test)
def test_relative_imports_2(self):
self._do_test(relative_import_test_2)
def test_relative_imports_3(self):
self._do_test(relative_import_test_3)
def test_extended_opargs(self):
extended_opargs_test = [
"a",
["a", "b"],
[], [],
"""\
a.py
%r
import b
b.py
""" % range(2**16)] # 2**16 constants
self._do_test(extended_opargs_test)
def test_main():
distutils.log.set_threshold(distutils.log.WARN)
test_support.run_unittest(ModuleFinderTest)
if __name__ == "__main__":
unittest.main()
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