# Test the runpy module
import unittest
import os
import os.path
import sys
import re
import tempfile
from test.test_support import verbose, run_unittest, forget
from test.script_helper import (temp_dir, make_script, compile_script,
make_pkg, make_zip_script, make_zip_pkg)
from runpy import _run_code, _run_module_code, run_module, run_path
# 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):
"""Unit tests for runpy._run_code and runpy._run_module_code"""
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.assertEqual(d["result"], self.expected_result)
self.assertIs(d["__name__"], None)
self.assertIs(d["__file__"], None)
self.assertIs(d["__loader__"], None)
self.assertIs(d["__package__"], None)
self.assertIs(d["run_argv0"], saved_argv0)
self.assertNotIn("run_name", d)
self.assertIs(sys.argv[0], 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.assertNotIn("result", d1)
self.assertIs(d2["initial"], initial)
self.assertEqual(d2["result"], self.expected_result)
self.assertEqual(d2["nested"]["x"], 1)
self.assertIs(d2["__name__"], name)
self.assertTrue(d2["run_name_in_sys_modules"])
self.assertTrue(d2["module_in_sys_modules"])
self.assertIs(d2["__file__"], file)
self.assertIs(d2["run_argv0"], file)
self.assertIs(d2["__loader__"], loader)
self.assertIs(d2["__package__"], package)
self.assertIs(sys.argv[0], saved_argv0)
self.assertNotIn(name, sys.modules)
class RunModuleTest(unittest.TestCase):
"""Unit tests for runpy.run_module"""
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 without __main__.py
self.expect_import_error("multiprocessing")
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, mod_base="runpy_test"):
pkg_name = "__runpy_pkg__"
test_fname = mod_base+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 + mod_base
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.assertIn("x", d1)
self.assertTrue(d1["x"] == 1)
del d1 # Ensure __loader__ entry doesn't keep file open
__import__(mod_name)
os.remove(mod_fname)
if not sys.dont_write_bytecode:
if verbose: print "Running from compiled:", mod_name
d2 = run_module(mod_name) # Read from bytecode
self.assertIn("x", d2)
self.assertTrue(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 _check_package(self, depth):
pkg_dir, mod_fname, mod_name = (
self._make_pkg("x=1\n", depth, "__main__"))
pkg_name, _, _ = mod_name.rpartition(".")
forget(mod_name)
try:
if verbose: print "Running from source:", pkg_name
d1 = run_module(pkg_name) # Read from source
self.assertIn("x", d1)
self.assertTrue(d1["x"] == 1)
del d1 # Ensure __loader__ entry doesn't keep file open
__import__(mod_name)
os.remove(mod_fname)
if not sys.dont_write_bytecode:
if verbose: print "Running from compiled:", pkg_name
d2 = run_module(pkg_name) # Read from bytecode
self.assertIn("x", d2)
self.assertTrue(d2["x"] == 1)
del d2 # Ensure __loader__ entry doesn't keep file open
finally:
self._del_pkg(pkg_dir, depth, pkg_name)
if verbose: print "Package 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.assertIn("__package__", d1)
self.assertTrue(d1["__package__"] == pkg_name)
self.assertIn("sibling", d1)
self.assertIn("nephew", d1)
del d1 # Ensure __loader__ entry doesn't keep file open
__import__(mod_name)
os.remove(mod_fname)
if not sys.dont_write_bytecode:
if verbose: print "Running from compiled:", mod_name
d2 = run_module(mod_name, run_name=run_name) # Read from bytecode
self.assertIn("__package__", d2)
self.assertTrue(d2["__package__"] == pkg_name)
self.assertIn("sibling", d2)
self.assertIn("nephew", 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_run_package(self):
for depth in range(1, 4):
if verbose: print "Testing package depth:", depth
self._check_package(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__")
class RunPathTest(unittest.TestCase):
"""Unit tests for runpy.run_path"""
# Based on corresponding tests in test_cmd_line_script
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 assertIs(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 the sys module
import sys
assertIs(globals(), sys.modules[__name__].__dict__)
argv0 = sys.argv[0]
"""
def _make_test_script(self, script_dir, script_basename, source=None):
if source is None:
source = self.test_source
return make_script(script_dir, script_basename, source)
def _check_script(self, script_name, expected_name, expected_file,
expected_argv0, expected_package):
result = run_path(script_name)
self.assertEqual(result["__name__"], expected_name)
self.assertEqual(result["__file__"], expected_file)
self.assertIn("argv0", result)
self.assertEqual(result["argv0"], expected_argv0)
self.assertEqual(result["__package__"], expected_package)
def _check_import_error(self, script_name, msg):
msg = re.escape(msg)
self.assertRaisesRegexp(ImportError, msg, run_path, script_name)
def test_basic_script(self):
with temp_dir() as script_dir:
mod_name = 'script'
script_name = self._make_test_script(script_dir, mod_name)
self._check_script(script_name, "<run_path>", script_name,
script_name, None)
def test_script_compiled(self):
with temp_dir() as script_dir:
mod_name = 'script'
script_name = self._make_test_script(script_dir, mod_name)
compiled_name = compile_script(script_name)
os.remove(script_name)
self._check_script(compiled_name, "<run_path>", compiled_name,
compiled_name, None)
def test_directory(self):
with temp_dir() as script_dir:
mod_name = '__main__'
script_name = self._make_test_script(script_dir, mod_name)
self._check_script(script_dir, "<run_path>", script_name,
script_dir, '')
def test_directory_compiled(self):
with temp_dir() as script_dir:
mod_name = '__main__'
script_name = self._make_test_script(script_dir, mod_name)
compiled_name = compile_script(script_name)
os.remove(script_name)
self._check_script(script_dir, "<run_path>", compiled_name,
script_dir, '')
def test_directory_error(self):
with temp_dir() as script_dir:
mod_name = 'not_main'
script_name = self._make_test_script(script_dir, mod_name)
msg = "can't find '__main__' module in %r" % script_dir
self._check_import_error(script_dir, msg)
def test_zipfile(self):
with temp_dir() as script_dir:
mod_name = '__main__'
script_name = self._make_test_script(script_dir, mod_name)
zip_name, fname = make_zip_script(script_dir, 'test_zip', script_name)
self._check_script(zip_name, "<run_path>", fname, zip_name, '')
def test_zipfile_compiled(self):
with temp_dir() as script_dir:
mod_name = '__main__'
script_name = self._make_test_script(script_dir, mod_name)
compiled_name = compile_script(script_name)
zip_name, fname = make_zip_script(script_dir, 'test_zip', compiled_name)
self._check_script(zip_name, "<run_path>", fname, zip_name, '')
def test_zipfile_error(self):
with temp_dir() as script_dir:
mod_name = 'not_main'
script_name = self._make_test_script(script_dir, mod_name)
zip_name, fname = make_zip_script(script_dir, 'test_zip', script_name)
msg = "can't find '__main__' module in %r" % zip_name
self._check_import_error(zip_name, msg)
def test_main_recursion_error(self):
with temp_dir() as script_dir, temp_dir() as dummy_dir:
mod_name = '__main__'
source = ("import runpy\n"
"runpy.run_path(%r)\n") % dummy_dir
script_name = self._make_test_script(script_dir, mod_name, source)
zip_name, fname = make_zip_script(script_dir, 'test_zip', script_name)
msg = "recursion depth exceeded"
self.assertRaisesRegexp(RuntimeError, msg, run_path, zip_name)
def test_main():
run_unittest(RunModuleCodeTest, RunModuleTest, RunPathTest)
if __name__ == "__main__":
test_main()