| from test.support import TESTFN, run_unittest, catch_warning |
| |
| import unittest |
| import os |
| import random |
| import shutil |
| import sys |
| import py_compile |
| import warnings |
| import imp |
| from test.support import unlink, TESTFN, unload |
| |
| |
| def remove_files(name): |
| for f in (name + ".py", |
| name + ".pyc", |
| name + ".pyo", |
| name + ".pyw", |
| name + "$py.class"): |
| if os.path.exists(f): |
| os.remove(f) |
| |
| |
| class ImportTest(unittest.TestCase): |
| |
| def testCaseSensitivity(self): |
| # Brief digression to test that import is case-sensitive: if we got this |
| # far, we know for sure that "random" exists. |
| try: |
| import RAnDoM |
| except ImportError: |
| pass |
| else: |
| self.fail("import of RAnDoM should have failed (case mismatch)") |
| |
| def testDoubleConst(self): |
| # Another brief digression to test the accuracy of manifest float constants. |
| from test import double_const # don't blink -- that *was* the test |
| |
| def testImport(self): |
| def test_with_extension(ext): |
| # ext normally ".py"; perhaps ".pyw" |
| source = TESTFN + ext |
| pyo = TESTFN + ".pyo" |
| if sys.platform.startswith('java'): |
| pyc = TESTFN + "$py.class" |
| else: |
| pyc = TESTFN + ".pyc" |
| |
| f = open(source, "w") |
| print("# This tests Python's ability to import a", ext, "file.", file=f) |
| a = random.randrange(1000) |
| b = random.randrange(1000) |
| print("a =", a, file=f) |
| print("b =", b, file=f) |
| f.close() |
| |
| if TESTFN in sys.modules: |
| del sys.modules[TESTFN] |
| try: |
| try: |
| mod = __import__(TESTFN) |
| except ImportError as err: |
| self.fail("import from %s failed: %s" % (ext, err)) |
| |
| self.assertEquals(mod.a, a, |
| "module loaded (%s) but contents invalid" % mod) |
| self.assertEquals(mod.b, b, |
| "module loaded (%s) but contents invalid" % mod) |
| finally: |
| unlink(source) |
| unlink(pyc) |
| unlink(pyo) |
| del sys.modules[TESTFN] |
| |
| sys.path.insert(0, os.curdir) |
| try: |
| test_with_extension(".py") |
| if sys.platform.startswith("win"): |
| for ext in ".PY", ".Py", ".pY", ".pyw", ".PYW", ".pYw": |
| test_with_extension(ext) |
| finally: |
| del sys.path[0] |
| |
| def testImpModule(self): |
| # Verify that the imp module can correctly load and find .py files |
| import imp |
| x = imp.find_module("os") |
| os = imp.load_module("os", *x) |
| |
| def test_module_with_large_stack(self, module='longlist'): |
| # create module w/list of 65000 elements to test bug #561858 |
| filename = module + '.py' |
| |
| # create a file with a list of 65000 elements |
| f = open(filename, 'w+') |
| f.write('d = [\n') |
| for i in range(65000): |
| f.write('"",\n') |
| f.write(']') |
| f.close() |
| |
| # compile & remove .py file, we only need .pyc (or .pyo) |
| f = open(filename, 'r') |
| py_compile.compile(filename) |
| f.close() |
| os.unlink(filename) |
| |
| # need to be able to load from current dir |
| sys.path.append('') |
| |
| # this used to crash |
| exec('import ' + module) |
| |
| # cleanup |
| del sys.path[-1] |
| for ext in '.pyc', '.pyo': |
| fname = module + ext |
| if os.path.exists(fname): |
| os.unlink(fname) |
| |
| def test_failing_import_sticks(self): |
| source = TESTFN + ".py" |
| f = open(source, "w") |
| print("a = 1/0", file=f) |
| f.close() |
| |
| # New in 2.4, we shouldn't be able to import that no matter how often |
| # we try. |
| sys.path.insert(0, os.curdir) |
| if TESTFN in sys.modules: |
| del sys.modules[TESTFN] |
| try: |
| for i in 1, 2, 3: |
| try: |
| mod = __import__(TESTFN) |
| except ZeroDivisionError: |
| if TESTFN in sys.modules: |
| self.fail("damaged module in sys.modules on %i. try" % i) |
| else: |
| self.fail("was able to import a damaged module on %i. try" % i) |
| finally: |
| sys.path.pop(0) |
| remove_files(TESTFN) |
| |
| def test_import_name_binding(self): |
| # import x.y.z binds x in the current namespace |
| import test as x |
| import test.support |
| self.assert_(x is test, x.__name__) |
| self.assert_(hasattr(test.support, "__file__")) |
| |
| # import x.y.z as w binds z as w |
| import test.support as y |
| self.assert_(y is test.support, y.__name__) |
| |
| def test_import_initless_directory_warning(self): |
| with catch_warning(): |
| # Just a random non-package directory we always expect to be |
| # somewhere in sys.path... |
| warnings.simplefilter('error', ImportWarning) |
| self.assertRaises(ImportWarning, __import__, "site-packages") |
| |
| def test_failing_reload(self): |
| # A failing reload should leave the module object in sys.modules. |
| source = TESTFN + ".py" |
| with open(source, "w") as f: |
| f.write("a = 1\nb=2\n") |
| |
| sys.path.insert(0, os.curdir) |
| try: |
| mod = __import__(TESTFN) |
| self.assert_(TESTFN in sys.modules, "expected module in sys.modules") |
| self.assertEquals(mod.a, 1, "module has wrong attribute values") |
| self.assertEquals(mod.b, 2, "module has wrong attribute values") |
| |
| # On WinXP, just replacing the .py file wasn't enough to |
| # convince reload() to reparse it. Maybe the timestamp didn't |
| # move enough. We force it to get reparsed by removing the |
| # compiled file too. |
| remove_files(TESTFN) |
| |
| # Now damage the module. |
| with open(source, "w") as f: |
| f.write("a = 10\nb=20//0\n") |
| |
| self.assertRaises(ZeroDivisionError, imp.reload, mod) |
| # But we still expect the module to be in sys.modules. |
| mod = sys.modules.get(TESTFN) |
| self.failIf(mod is None, "expected module to still be in sys.modules") |
| |
| # We should have replaced a w/ 10, but the old b value should |
| # stick. |
| self.assertEquals(mod.a, 10, "module has wrong attribute values") |
| self.assertEquals(mod.b, 2, "module has wrong attribute values") |
| |
| finally: |
| sys.path.pop(0) |
| remove_files(TESTFN) |
| if TESTFN in sys.modules: |
| del sys.modules[TESTFN] |
| |
| def test_file_to_source(self): |
| # check if __file__ points to the source file where available |
| source = TESTFN + ".py" |
| with open(source, "w") as f: |
| f.write("test = None\n") |
| |
| sys.path.insert(0, os.curdir) |
| try: |
| mod = __import__(TESTFN) |
| self.failUnless(mod.__file__.endswith('.py')) |
| os.remove(source) |
| del sys.modules[TESTFN] |
| mod = __import__(TESTFN) |
| ext = mod.__file__[-4:] |
| self.failUnless(ext in ('.pyc', '.pyo'), ext) |
| finally: |
| sys.path.pop(0) |
| remove_files(TESTFN) |
| if TESTFN in sys.modules: |
| del sys.modules[TESTFN] |
| |
| |
| def test_importbyfilename(self): |
| path = os.path.abspath(TESTFN) |
| try: |
| __import__(path) |
| except ImportError as err: |
| self.assertEqual("Import by filename is not supported.", |
| err.args[0]) |
| else: |
| self.fail("import by path didn't raise an exception") |
| |
| class PathsTests(unittest.TestCase): |
| SAMPLES = ('test', 'test\u00e4\u00f6\u00fc\u00df', 'test\u00e9\u00e8', |
| 'test\u00b0\u00b3\u00b2') |
| path = TESTFN |
| |
| def setUp(self): |
| os.mkdir(self.path) |
| self.syspath = sys.path[:] |
| |
| def tearDown(self): |
| shutil.rmtree(self.path) |
| sys.path = self.syspath |
| |
| # http://bugs.python.org/issue1293 |
| def test_trailing_slash(self): |
| f = open(os.path.join(self.path, 'test_trailing_slash.py'), 'w') |
| f.write("testdata = 'test_trailing_slash'") |
| f.close() |
| sys.path.append(self.path+'/') |
| mod = __import__("test_trailing_slash") |
| self.assertEqual(mod.testdata, 'test_trailing_slash') |
| unload("test_trailing_slash") |
| |
| class RelativeImport(unittest.TestCase): |
| def tearDown(self): |
| try: |
| del sys.modules["test.relimport"] |
| except: |
| pass |
| |
| def test_relimport_star(self): |
| # This will import * from .test_import. |
| from . import relimport |
| self.assertTrue(hasattr(relimport, "RelativeImport")) |
| |
| def test_main(verbose=None): |
| run_unittest(ImportTest, PathsTests, RelativeImport) |
| |
| if __name__ == '__main__': |
| # test needs to be a package, so we can do relative import |
| from test.test_import import test_main |
| test_main() |