254 lines
9.7 KiB
Python
254 lines
9.7 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 tempfile
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from test.test_support import verbose, run_unittest, forget
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from runpy import _run_code, _run_module_code, run_module
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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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class RunModuleCodeTest(unittest.TestCase):
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expected_result = ["Top level assignment", "Lower level reference"]
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test_source = (
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"# Check basic code execution\n"
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"result = ['Top level assignment']\n"
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"def f():\n"
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" result.append('Lower level reference')\n"
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"f()\n"
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"# Check the sys module\n"
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"import sys\n"
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"run_argv0 = sys.argv[0]\n"
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"run_name_in_sys_modules = __name__ in sys.modules\n"
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"if run_name_in_sys_modules:\n"
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" module_in_sys_modules = globals() is sys.modules[__name__].__dict__\n"
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"# Check nested operation\n"
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"import runpy\n"
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"nested = runpy._run_module_code('x=1\\n', mod_name='<run>')\n"
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)
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def test_run_code(self):
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saved_argv0 = sys.argv[0]
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d = _run_code(self.test_source, {})
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self.failUnless(d["result"] == self.expected_result)
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self.failUnless(d["__name__"] is None)
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self.failUnless(d["__file__"] is None)
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self.failUnless(d["__loader__"] is None)
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self.failUnless(d["__package__"] is None)
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self.failUnless(d["run_argv0"] is saved_argv0)
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self.failUnless("run_name" not in d)
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self.failUnless(sys.argv[0] is saved_argv0)
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def test_run_module_code(self):
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initial = object()
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name = "<Nonsense>"
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file = "Some other nonsense"
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loader = "Now you're just being silly"
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package = '' # Treat as a top level module
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d1 = dict(initial=initial)
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saved_argv0 = sys.argv[0]
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d2 = _run_module_code(self.test_source,
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d1,
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name,
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file,
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loader,
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package)
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self.failUnless("result" not in d1)
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self.failUnless(d2["initial"] is initial)
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self.failUnless(d2["result"] == self.expected_result)
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self.failUnless(d2["nested"]["x"] == 1)
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self.failUnless(d2["__name__"] is name)
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self.failUnless(d2["run_name_in_sys_modules"])
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self.failUnless(d2["module_in_sys_modules"])
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self.failUnless(d2["__file__"] is file)
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self.failUnless(d2["run_argv0"] is file)
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self.failUnless(d2["__loader__"] is loader)
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self.failUnless(d2["__package__"] is package)
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self.failUnless(sys.argv[0] is saved_argv0)
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self.failUnless(name not in sys.modules)
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class RunModuleTest(unittest.TestCase):
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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
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self.expect_import_error("logging")
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def test_library_module(self):
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run_module("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__"+os.extsep+"py")
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pkg_file = open(pkg_fname, "w")
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pkg_file.close()
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return pkg_fname
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def _make_pkg(self, source, depth):
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pkg_name = "__runpy_pkg__"
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test_fname = "runpy_test"+os.extsep+"py"
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pkg_dir = sub_dir = tempfile.mkdtemp()
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if verbose: print " Package tree in:", sub_dir
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sys.path.insert(0, pkg_dir)
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if verbose: 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: print " Next level in:", sub_dir
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if verbose: 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: print " Created:", mod_fname
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mod_name = (pkg_name+".")*depth + "runpy_test"
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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: print " Removed sys.modules entries"
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del sys.path[0]
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if verbose: 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, ex:
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if verbose: 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, ex:
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if verbose: print ex # Persist with cleaning up
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try:
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os.rmdir(top)
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if verbose: print " Removed package tree"
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except OSError, ex:
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if verbose: print ex # Persist with cleaning up
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def _check_module(self, depth):
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pkg_dir, mod_fname, mod_name = (
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self._make_pkg("x=1\n", depth))
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forget(mod_name)
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try:
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if verbose: print "Running from source:", mod_name
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d1 = run_module(mod_name) # Read from source
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self.failUnless("x" in d1)
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self.failUnless(d1["x"] == 1)
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del d1 # Ensure __loader__ entry doesn't keep file open
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__import__(mod_name)
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os.remove(mod_fname)
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if verbose: print "Running from compiled:", mod_name
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d2 = run_module(mod_name) # Read from bytecode
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self.failUnless("x" in d2)
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self.failUnless(d2["x"] == 1)
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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: print "Module 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"+os.extsep+"py")
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sibling_file = open(sibling_fname, "w")
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sibling_file.close()
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if verbose: 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: 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: print " Added cousin package:", cousin_dir
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nephew_fname = os.path.join(cousin_dir, "nephew"+os.extsep+"py")
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nephew_file = open(nephew_fname, "w")
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nephew_file.close()
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if verbose: 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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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: 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.failUnless("__package__" in d1)
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self.failUnless(d1["__package__"] == pkg_name)
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self.failUnless("sibling" in d1)
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self.failUnless("nephew" in d1)
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del d1 # Ensure __loader__ entry doesn't keep file open
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__import__(mod_name)
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os.remove(mod_fname)
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if verbose: print "Running from compiled:", mod_name
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d2 = run_module(mod_name, run_name=run_name) # Read from bytecode
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self.failUnless("__package__" in d2)
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self.failUnless(d2["__package__"] == pkg_name)
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self.failUnless("sibling" in d2)
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self.failUnless("nephew" in 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: 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: print "Testing package depth:", depth
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self._check_module(depth)
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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: 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: print "Testing main relative imports at depth:", depth
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self._check_relative_imports(depth, "__main__")
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def test_main():
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run_unittest(RunModuleCodeTest)
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run_unittest(RunModuleTest)
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if __name__ == "__main__":
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test_main()
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