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586 lines
23 KiB
Python
586 lines
23 KiB
Python
# Test the runpy module
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import unittest
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import os
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import os.path
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import sys
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import re
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import tempfile
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import importlib
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import py_compile
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from test.support import (
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forget, make_legacy_pyc, run_unittest, unload, verbose, no_tracing,
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create_empty_file)
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from test.script_helper import (
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make_pkg, make_script, make_zip_pkg, make_zip_script, temp_dir)
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import runpy
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from runpy import _run_code, _run_module_code, run_module, run_path
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# Note: This module can't safely test _run_module_as_main as it
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# runs its tests in the current process, which would mess with the
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# real __main__ module (usually test.regrtest)
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# See test_cmd_line_script for a test that executes that code path
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# Set up the test code and expected results
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example_source = """\
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# Check basic code execution
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result = ['Top level assignment']
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def f():
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result.append('Lower level reference')
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f()
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del f
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# Check the sys module
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import sys
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run_argv0 = sys.argv[0]
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run_name_in_sys_modules = __name__ in sys.modules
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module_in_sys_modules = (run_name_in_sys_modules and
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globals() is sys.modules[__name__].__dict__)
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# Check nested operation
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import runpy
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nested = runpy._run_module_code('x=1\\n', mod_name='<run>')
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"""
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implicit_namespace = {
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"__name__": None,
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"__file__": None,
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"__cached__": None,
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"__package__": None,
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"__doc__": None,
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}
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example_namespace = {
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"sys": sys,
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"runpy": runpy,
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"result": ["Top level assignment", "Lower level reference"],
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"run_argv0": sys.argv[0],
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"run_name_in_sys_modules": False,
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"module_in_sys_modules": False,
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"nested": dict(implicit_namespace,
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x=1, __name__="<run>", __loader__=None),
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}
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example_namespace.update(implicit_namespace)
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class CodeExecutionMixin:
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# Issue #15230 (run_path not handling run_name correctly) highlighted a
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# problem with the way arguments were being passed from higher level APIs
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# down to lower level code. This mixin makes it easier to ensure full
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# testing occurs at those upper layers as well, not just at the utility
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# layer
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def assertNamespaceMatches(self, result_ns, expected_ns):
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"""Check two namespaces match.
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Ignores any unspecified interpreter created names
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"""
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# Impls are permitted to add extra names, so filter them out
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for k in list(result_ns):
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if k.startswith("__") and k.endswith("__"):
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if k not in expected_ns:
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result_ns.pop(k)
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if k not in expected_ns["nested"]:
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result_ns["nested"].pop(k)
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# Don't use direct dict comparison - the diffs are too hard to debug
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self.assertEqual(set(result_ns), set(expected_ns))
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for k in result_ns:
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actual = (k, result_ns[k])
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expected = (k, expected_ns[k])
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self.assertEqual(actual, expected)
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def check_code_execution(self, create_namespace, expected_namespace):
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"""Check that an interface runs the example code correctly
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First argument is a callable accepting the initial globals and
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using them to create the actual namespace
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Second argument is the expected result
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"""
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sentinel = object()
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expected_ns = expected_namespace.copy()
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run_name = expected_ns["__name__"]
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saved_argv0 = sys.argv[0]
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saved_mod = sys.modules.get(run_name, sentinel)
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# Check without initial globals
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result_ns = create_namespace(None)
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self.assertNamespaceMatches(result_ns, expected_ns)
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self.assertIs(sys.argv[0], saved_argv0)
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self.assertIs(sys.modules.get(run_name, sentinel), saved_mod)
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# And then with initial globals
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initial_ns = {"sentinel": sentinel}
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expected_ns["sentinel"] = sentinel
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result_ns = create_namespace(initial_ns)
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self.assertIsNot(result_ns, initial_ns)
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self.assertNamespaceMatches(result_ns, expected_ns)
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self.assertIs(sys.argv[0], saved_argv0)
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self.assertIs(sys.modules.get(run_name, sentinel), saved_mod)
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class ExecutionLayerTestCase(unittest.TestCase, CodeExecutionMixin):
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"""Unit tests for runpy._run_code and runpy._run_module_code"""
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def test_run_code(self):
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expected_ns = example_namespace.copy()
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expected_ns.update({
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"__loader__": None,
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})
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def create_ns(init_globals):
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return _run_code(example_source, {}, init_globals)
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self.check_code_execution(create_ns, expected_ns)
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def test_run_module_code(self):
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mod_name = "<Nonsense>"
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mod_fname = "Some other nonsense"
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mod_loader = "Now you're just being silly"
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mod_package = '' # Treat as a top level module
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expected_ns = example_namespace.copy()
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expected_ns.update({
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"__name__": mod_name,
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"__file__": mod_fname,
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"__loader__": mod_loader,
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"__package__": mod_package,
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"run_argv0": mod_fname,
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"run_name_in_sys_modules": True,
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"module_in_sys_modules": True,
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})
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def create_ns(init_globals):
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return _run_module_code(example_source,
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init_globals,
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mod_name,
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mod_fname,
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mod_loader,
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mod_package)
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self.check_code_execution(create_ns, expected_ns)
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# TODO: Use self.addCleanup to get rid of a lot of try-finally blocks
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class RunModuleTestCase(unittest.TestCase, CodeExecutionMixin):
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"""Unit tests for runpy.run_module"""
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def expect_import_error(self, mod_name):
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try:
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run_module(mod_name)
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except ImportError:
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pass
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else:
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self.fail("Expected import error for " + mod_name)
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def test_invalid_names(self):
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# Builtin module
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self.expect_import_error("sys")
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# Non-existent modules
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self.expect_import_error("sys.imp.eric")
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self.expect_import_error("os.path.half")
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self.expect_import_error("a.bee")
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self.expect_import_error(".howard")
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self.expect_import_error("..eaten")
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# Package without __main__.py
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self.expect_import_error("multiprocessing")
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def test_library_module(self):
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self.assertEqual(run_module("runpy")["__name__"], "runpy")
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def _add_pkg_dir(self, pkg_dir):
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os.mkdir(pkg_dir)
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pkg_fname = os.path.join(pkg_dir, "__init__.py")
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create_empty_file(pkg_fname)
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return pkg_fname
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def _make_pkg(self, source, depth, mod_base="runpy_test"):
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pkg_name = "__runpy_pkg__"
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test_fname = mod_base+os.extsep+"py"
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pkg_dir = sub_dir = os.path.realpath(tempfile.mkdtemp())
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if verbose > 1: print(" Package tree in:", sub_dir)
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sys.path.insert(0, pkg_dir)
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if verbose > 1: print(" Updated sys.path:", sys.path[0])
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for i in range(depth):
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sub_dir = os.path.join(sub_dir, pkg_name)
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pkg_fname = self._add_pkg_dir(sub_dir)
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if verbose > 1: print(" Next level in:", sub_dir)
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if verbose > 1: print(" Created:", pkg_fname)
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mod_fname = os.path.join(sub_dir, test_fname)
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mod_file = open(mod_fname, "w")
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mod_file.write(source)
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mod_file.close()
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if verbose > 1: print(" Created:", mod_fname)
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mod_name = (pkg_name+".")*depth + mod_base
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return pkg_dir, mod_fname, mod_name
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def _del_pkg(self, top, depth, mod_name):
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for entry in list(sys.modules):
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if entry.startswith("__runpy_pkg__"):
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del sys.modules[entry]
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if verbose > 1: print(" Removed sys.modules entries")
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del sys.path[0]
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if verbose > 1: print(" Removed sys.path entry")
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for root, dirs, files in os.walk(top, topdown=False):
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for name in files:
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try:
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os.remove(os.path.join(root, name))
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except OSError as ex:
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if verbose > 1: print(ex) # Persist with cleaning up
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for name in dirs:
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fullname = os.path.join(root, name)
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try:
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os.rmdir(fullname)
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except OSError as ex:
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if verbose > 1: print(ex) # Persist with cleaning up
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try:
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os.rmdir(top)
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if verbose > 1: print(" Removed package tree")
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except OSError as ex:
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if verbose > 1: print(ex) # Persist with cleaning up
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def _fix_ns_for_legacy_pyc(self, ns, alter_sys):
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char_to_add = "c" if __debug__ else "o"
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ns["__file__"] += char_to_add
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if alter_sys:
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ns["run_argv0"] += char_to_add
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def _check_module(self, depth, alter_sys=False):
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pkg_dir, mod_fname, mod_name = (
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self._make_pkg(example_source, depth))
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forget(mod_name)
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expected_ns = example_namespace.copy()
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expected_ns.update({
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"__name__": mod_name,
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"__file__": mod_fname,
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"__package__": mod_name.rpartition(".")[0],
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})
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if alter_sys:
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expected_ns.update({
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"run_argv0": mod_fname,
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"run_name_in_sys_modules": True,
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"module_in_sys_modules": True,
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})
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def create_ns(init_globals):
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return run_module(mod_name, init_globals, alter_sys=alter_sys)
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try:
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if verbose > 1: print("Running from source:", mod_name)
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self.check_code_execution(create_ns, expected_ns)
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importlib.invalidate_caches()
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__import__(mod_name)
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os.remove(mod_fname)
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if not sys.dont_write_bytecode:
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make_legacy_pyc(mod_fname)
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unload(mod_name) # In case loader caches paths
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importlib.invalidate_caches()
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if verbose > 1: print("Running from compiled:", mod_name)
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self._fix_ns_for_legacy_pyc(expected_ns, alter_sys)
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self.check_code_execution(create_ns, expected_ns)
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finally:
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self._del_pkg(pkg_dir, depth, mod_name)
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if verbose > 1: print("Module executed successfully")
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def _check_package(self, depth, alter_sys=False):
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pkg_dir, mod_fname, mod_name = (
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self._make_pkg(example_source, depth, "__main__"))
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pkg_name = mod_name.rpartition(".")[0]
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forget(mod_name)
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expected_ns = example_namespace.copy()
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expected_ns.update({
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"__name__": mod_name,
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"__file__": mod_fname,
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"__package__": pkg_name,
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})
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if alter_sys:
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expected_ns.update({
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"run_argv0": mod_fname,
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"run_name_in_sys_modules": True,
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"module_in_sys_modules": True,
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})
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def create_ns(init_globals):
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return run_module(pkg_name, init_globals, alter_sys=alter_sys)
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try:
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if verbose > 1: print("Running from source:", pkg_name)
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self.check_code_execution(create_ns, expected_ns)
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importlib.invalidate_caches()
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__import__(mod_name)
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os.remove(mod_fname)
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if not sys.dont_write_bytecode:
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make_legacy_pyc(mod_fname)
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unload(mod_name) # In case loader caches paths
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if verbose > 1: print("Running from compiled:", pkg_name)
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importlib.invalidate_caches()
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self._fix_ns_for_legacy_pyc(expected_ns, alter_sys)
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self.check_code_execution(create_ns, expected_ns)
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finally:
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self._del_pkg(pkg_dir, depth, pkg_name)
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if verbose > 1: print("Package executed successfully")
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def _add_relative_modules(self, base_dir, source, depth):
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if depth <= 1:
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raise ValueError("Relative module test needs depth > 1")
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pkg_name = "__runpy_pkg__"
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module_dir = base_dir
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for i in range(depth):
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parent_dir = module_dir
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module_dir = os.path.join(module_dir, pkg_name)
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# Add sibling module
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sibling_fname = os.path.join(module_dir, "sibling.py")
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create_empty_file(sibling_fname)
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if verbose > 1: print(" Added sibling module:", sibling_fname)
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# Add nephew module
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uncle_dir = os.path.join(parent_dir, "uncle")
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self._add_pkg_dir(uncle_dir)
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if verbose > 1: print(" Added uncle package:", uncle_dir)
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cousin_dir = os.path.join(uncle_dir, "cousin")
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self._add_pkg_dir(cousin_dir)
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if verbose > 1: print(" Added cousin package:", cousin_dir)
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nephew_fname = os.path.join(cousin_dir, "nephew.py")
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create_empty_file(nephew_fname)
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if verbose > 1: print(" Added nephew module:", nephew_fname)
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def _check_relative_imports(self, depth, run_name=None):
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contents = r"""\
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from __future__ import absolute_import
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from . import sibling
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from ..uncle.cousin import nephew
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"""
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pkg_dir, mod_fname, mod_name = (
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self._make_pkg(contents, depth))
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if run_name is None:
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expected_name = mod_name
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else:
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expected_name = run_name
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try:
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self._add_relative_modules(pkg_dir, contents, depth)
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pkg_name = mod_name.rpartition('.')[0]
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if verbose > 1: print("Running from source:", mod_name)
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d1 = run_module(mod_name, run_name=run_name) # Read from source
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self.assertEqual(d1["__name__"], expected_name)
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self.assertEqual(d1["__package__"], pkg_name)
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self.assertIn("sibling", d1)
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self.assertIn("nephew", d1)
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del d1 # Ensure __loader__ entry doesn't keep file open
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importlib.invalidate_caches()
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__import__(mod_name)
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os.remove(mod_fname)
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if not sys.dont_write_bytecode:
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make_legacy_pyc(mod_fname)
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unload(mod_name) # In case the loader caches paths
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if verbose > 1: print("Running from compiled:", mod_name)
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importlib.invalidate_caches()
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d2 = run_module(mod_name, run_name=run_name) # Read from bytecode
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self.assertEqual(d2["__name__"], expected_name)
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self.assertEqual(d2["__package__"], pkg_name)
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self.assertIn("sibling", d2)
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self.assertIn("nephew", d2)
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del d2 # Ensure __loader__ entry doesn't keep file open
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finally:
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self._del_pkg(pkg_dir, depth, mod_name)
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if verbose > 1: print("Module executed successfully")
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def test_run_module(self):
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for depth in range(4):
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if verbose > 1: print("Testing package depth:", depth)
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self._check_module(depth)
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def test_run_package(self):
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for depth in range(1, 4):
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if verbose > 1: print("Testing package depth:", depth)
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self._check_package(depth)
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def test_run_module_alter_sys(self):
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for depth in range(4):
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if verbose > 1: print("Testing package depth:", depth)
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self._check_module(depth, alter_sys=True)
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def test_run_package_alter_sys(self):
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for depth in range(1, 4):
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if verbose > 1: print("Testing package depth:", depth)
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self._check_package(depth, alter_sys=True)
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def test_explicit_relative_import(self):
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for depth in range(2, 5):
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if verbose > 1: print("Testing relative imports at depth:", depth)
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self._check_relative_imports(depth)
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def test_main_relative_import(self):
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for depth in range(2, 5):
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if verbose > 1: print("Testing main relative imports at depth:", depth)
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self._check_relative_imports(depth, "__main__")
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def test_run_name(self):
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depth = 1
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run_name = "And now for something completely different"
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pkg_dir, mod_fname, mod_name = (
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self._make_pkg(example_source, depth))
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forget(mod_name)
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expected_ns = example_namespace.copy()
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expected_ns.update({
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"__name__": run_name,
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"__file__": mod_fname,
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"__package__": mod_name.rpartition(".")[0],
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})
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def create_ns(init_globals):
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return run_module(mod_name, init_globals, run_name)
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try:
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self.check_code_execution(create_ns, expected_ns)
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finally:
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self._del_pkg(pkg_dir, depth, mod_name)
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def test_pkgutil_walk_packages(self):
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# This is a dodgy hack to use the test_runpy infrastructure to test
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# issue #15343. Issue #15348 declares this is indeed a dodgy hack ;)
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import pkgutil
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max_depth = 4
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base_name = "__runpy_pkg__"
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package_suffixes = ["uncle", "uncle.cousin"]
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module_suffixes = ["uncle.cousin.nephew", base_name + ".sibling"]
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expected_packages = set()
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expected_modules = set()
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for depth in range(1, max_depth):
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pkg_name = ".".join([base_name] * depth)
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expected_packages.add(pkg_name)
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for name in package_suffixes:
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expected_packages.add(pkg_name + "." + name)
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for name in module_suffixes:
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expected_modules.add(pkg_name + "." + name)
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pkg_name = ".".join([base_name] * max_depth)
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expected_packages.add(pkg_name)
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expected_modules.add(pkg_name + ".runpy_test")
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pkg_dir, mod_fname, mod_name = (
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self._make_pkg("", max_depth))
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self.addCleanup(self._del_pkg, pkg_dir, max_depth, mod_name)
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for depth in range(2, max_depth+1):
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self._add_relative_modules(pkg_dir, "", depth)
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for finder, mod_name, ispkg in pkgutil.walk_packages([pkg_dir]):
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self.assertIsInstance(finder,
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importlib.machinery.FileFinder)
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if ispkg:
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expected_packages.remove(mod_name)
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else:
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expected_modules.remove(mod_name)
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self.assertEqual(len(expected_packages), 0, expected_packages)
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self.assertEqual(len(expected_modules), 0, expected_modules)
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class RunPathTestCase(unittest.TestCase, CodeExecutionMixin):
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"""Unit tests for runpy.run_path"""
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def _make_test_script(self, script_dir, script_basename, source=None):
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if source is None:
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source = example_source
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return make_script(script_dir, script_basename, source)
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def _check_script(self, script_name, expected_name, expected_file,
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expected_argv0):
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# First check is without run_name
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def create_ns(init_globals):
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return run_path(script_name, init_globals)
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expected_ns = example_namespace.copy()
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expected_ns.update({
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"__name__": expected_name,
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"__file__": expected_file,
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"__package__": "",
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"run_argv0": expected_argv0,
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"run_name_in_sys_modules": True,
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"module_in_sys_modules": True,
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})
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self.check_code_execution(create_ns, expected_ns)
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# Second check makes sure run_name works in all cases
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run_name = "prove.issue15230.is.fixed"
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def create_ns(init_globals):
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return run_path(script_name, init_globals, run_name)
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expected_ns["__name__"] = run_name
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expected_ns["__package__"] = run_name.rpartition(".")[0]
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self.check_code_execution(create_ns, expected_ns)
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def _check_import_error(self, script_name, msg):
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msg = re.escape(msg)
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self.assertRaisesRegex(ImportError, msg, run_path, script_name)
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def test_basic_script(self):
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with temp_dir() as script_dir:
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mod_name = 'script'
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script_name = self._make_test_script(script_dir, mod_name)
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self._check_script(script_name, "<run_path>", script_name,
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script_name)
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def test_script_compiled(self):
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with temp_dir() as script_dir:
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mod_name = 'script'
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script_name = self._make_test_script(script_dir, mod_name)
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compiled_name = py_compile.compile(script_name, doraise=True)
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os.remove(script_name)
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self._check_script(compiled_name, "<run_path>", compiled_name,
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compiled_name)
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def test_directory(self):
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with temp_dir() as script_dir:
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mod_name = '__main__'
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script_name = self._make_test_script(script_dir, mod_name)
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self._check_script(script_dir, "<run_path>", script_name,
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script_dir)
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def test_directory_compiled(self):
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with temp_dir() as script_dir:
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mod_name = '__main__'
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script_name = self._make_test_script(script_dir, mod_name)
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compiled_name = py_compile.compile(script_name, doraise=True)
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os.remove(script_name)
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if not sys.dont_write_bytecode:
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legacy_pyc = make_legacy_pyc(script_name)
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self._check_script(script_dir, "<run_path>", legacy_pyc,
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script_dir)
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def test_directory_error(self):
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with temp_dir() as script_dir:
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mod_name = 'not_main'
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script_name = self._make_test_script(script_dir, mod_name)
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msg = "can't find '__main__' module in %r" % script_dir
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self._check_import_error(script_dir, msg)
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def test_zipfile(self):
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with temp_dir() as script_dir:
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mod_name = '__main__'
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script_name = self._make_test_script(script_dir, mod_name)
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zip_name, fname = make_zip_script(script_dir, 'test_zip', script_name)
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self._check_script(zip_name, "<run_path>", fname, zip_name)
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def test_zipfile_compiled(self):
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with temp_dir() as script_dir:
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mod_name = '__main__'
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script_name = self._make_test_script(script_dir, mod_name)
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compiled_name = py_compile.compile(script_name, doraise=True)
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zip_name, fname = make_zip_script(script_dir, 'test_zip',
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compiled_name)
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self._check_script(zip_name, "<run_path>", fname, zip_name)
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def test_zipfile_error(self):
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with temp_dir() as script_dir:
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mod_name = 'not_main'
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script_name = self._make_test_script(script_dir, mod_name)
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zip_name, fname = make_zip_script(script_dir, 'test_zip', script_name)
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msg = "can't find '__main__' module in %r" % zip_name
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self._check_import_error(zip_name, msg)
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@no_tracing
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def test_main_recursion_error(self):
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with temp_dir() as script_dir, temp_dir() as dummy_dir:
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mod_name = '__main__'
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source = ("import runpy\n"
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"runpy.run_path(%r)\n") % dummy_dir
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script_name = self._make_test_script(script_dir, mod_name, source)
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zip_name, fname = make_zip_script(script_dir, 'test_zip', script_name)
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msg = "recursion depth exceeded"
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self.assertRaisesRegex(RuntimeError, msg, run_path, zip_name)
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def test_encoding(self):
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with temp_dir() as script_dir:
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filename = os.path.join(script_dir, 'script.py')
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with open(filename, 'w', encoding='latin1') as f:
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f.write("""
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#coding:latin1
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s = "non-ASCII: h\xe9"
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""")
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result = run_path(filename)
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self.assertEqual(result['s'], "non-ASCII: h\xe9")
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def test_main():
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run_unittest(
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ExecutionLayerTestCase,
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RunModuleTestCase,
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RunPathTestCase
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)
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if __name__ == "__main__":
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test_main()
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