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✏️ test_runpy.py
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# 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_run_package_init_exceptions(self): # These were previously wrapped in an ImportError; see Issue 14285 exceptions = (ImportError, AttributeError, TypeError, ValueError) for exception in exceptions: name = exception.__name__ source = "raise {0}('{0} in __init__.py.')".format(name) result = self._make_pkg("", 1, "__main__") pkg_dir, _, mod_name = result mod_name = mod_name.replace(".__main__", "") try: init = os.path.join(pkg_dir, "__runpy_pkg__", "__init__.py") with open(init, "wt") as mod_file: mod_file.write(source) try: run_module(mod_name) except exception as err: msg = "cannot be directly executed" self.assertNotIn(msg, format(err)) else: self.fail("Nothing raised; expected {}".format(name)) finally: self._del_pkg(pkg_dir, 1, mod_name) 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()
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