230 lines
8.9 KiB
Python
230 lines
8.9 KiB
Python
import unittest
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import sys
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from test.test_support import (catch_warning, CleanImport,
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TestSkipped, run_unittest)
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import warnings
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if not sys.py3kwarning:
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raise TestSkipped('%s must be run with the -3 flag' % __name__)
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class TestPy3KWarnings(unittest.TestCase):
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def test_type_inequality_comparisons(self):
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expected = 'type inequality comparisons not supported in 3.x'
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with catch_warning() as w:
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self.assertWarning(int < str, w, expected)
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with catch_warning() as w:
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self.assertWarning(type < object, w, expected)
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def test_object_inequality_comparisons(self):
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expected = 'comparing unequal types not supported in 3.x'
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with catch_warning() as w:
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self.assertWarning(str < [], w, expected)
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with catch_warning() as w:
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self.assertWarning(object() < (1, 2), w, expected)
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def test_dict_inequality_comparisons(self):
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expected = 'dict inequality comparisons not supported in 3.x'
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with catch_warning() as w:
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self.assertWarning({} < {2:3}, w, expected)
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with catch_warning() as w:
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self.assertWarning({} <= {}, w, expected)
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with catch_warning() as w:
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self.assertWarning({} > {2:3}, w, expected)
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with catch_warning() as w:
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self.assertWarning({2:3} >= {}, w, expected)
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def test_cell_inequality_comparisons(self):
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expected = 'cell comparisons not supported in 3.x'
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def f(x):
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def g():
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return x
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return g
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cell0, = f(0).func_closure
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cell1, = f(1).func_closure
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with catch_warning() as w:
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self.assertWarning(cell0 == cell1, w, expected)
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with catch_warning() as w:
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self.assertWarning(cell0 < cell1, w, expected)
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def test_code_inequality_comparisons(self):
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expected = 'code inequality comparisons not supported in 3.x'
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def f(x):
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pass
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def g(x):
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pass
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with catch_warning() as w:
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self.assertWarning(f.func_code < g.func_code, w, expected)
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with catch_warning() as w:
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self.assertWarning(f.func_code <= g.func_code, w, expected)
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with catch_warning() as w:
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self.assertWarning(f.func_code >= g.func_code, w, expected)
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with catch_warning() as w:
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self.assertWarning(f.func_code > g.func_code, w, expected)
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def test_builtin_function_or_method_comparisons(self):
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expected = ('builtin_function_or_method '
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'inequality comparisons not supported in 3.x')
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func = eval
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meth = {}.get
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with catch_warning() as w:
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self.assertWarning(func < meth, w, expected)
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with catch_warning() as w:
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self.assertWarning(func > meth, w, expected)
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with catch_warning() as w:
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self.assertWarning(meth <= func, w, expected)
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with catch_warning() as w:
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self.assertWarning(meth >= func, w, expected)
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def assertWarning(self, _, warning, expected_message):
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self.assertEqual(str(warning.message), expected_message)
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def test_sort_cmp_arg(self):
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expected = "the cmp argument is not supported in 3.x"
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lst = range(5)
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cmp = lambda x,y: -1
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with catch_warning() as w:
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self.assertWarning(lst.sort(cmp=cmp), w, expected)
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with catch_warning() as w:
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self.assertWarning(sorted(lst, cmp=cmp), w, expected)
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with catch_warning() as w:
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self.assertWarning(lst.sort(cmp), w, expected)
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with catch_warning() as w:
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self.assertWarning(sorted(lst, cmp), w, expected)
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def test_sys_exc_clear(self):
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expected = 'sys.exc_clear() not supported in 3.x; use except clauses'
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with catch_warning() as w:
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self.assertWarning(sys.exc_clear(), w, expected)
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def test_methods_members(self):
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expected = '__members__ and __methods__ not supported in 3.x'
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class C:
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__methods__ = ['a']
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__members__ = ['b']
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c = C()
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with catch_warning() as w:
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self.assertWarning(dir(c), w, expected)
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def test_softspace(self):
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expected = 'file.softspace not supported in 3.x'
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with file(__file__) as f:
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with catch_warning() as w:
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self.assertWarning(f.softspace, w, expected)
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def set():
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f.softspace = 0
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with catch_warning() as w:
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self.assertWarning(set(), w, expected)
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def test_buffer(self):
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expected = 'buffer() not supported in 3.x; use memoryview()'
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with catch_warning() as w:
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self.assertWarning(buffer('a'), w, expected)
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class TestStdlibRemovals(unittest.TestCase):
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# test.testall not tested as it executes all unit tests as an
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# import side-effect.
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all_platforms = ('audiodev', 'imputil', 'mutex', 'user', 'new', 'rexec',
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'Bastion', 'compiler', 'dircache', 'fpformat',
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'ihooks', 'mhlib')
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inclusive_platforms = {'irix':('pure',)}
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optional_modules = ('bsddb185', 'Canvas', 'dl', 'linuxaudiodev', 'imageop',
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'sv')
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def check_removal(self, module_name, optional=False):
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"""Make sure the specified module, when imported, raises a
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DeprecationWarning and specifies itself in the message."""
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with CleanImport(module_name):
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with catch_warning(record=False) as w:
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warnings.filterwarnings("error", ".+ removed",
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DeprecationWarning)
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try:
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__import__(module_name, level=0)
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except DeprecationWarning as exc:
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self.assert_(module_name in exc.args[0])
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except ImportError:
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if not optional:
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raise
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else:
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self.fail("DeprecationWarning not raised for %s" %
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module_name)
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def test_platform_independent_removals(self):
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# Make sure that the modules that are available on all platforms raise
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# the proper DeprecationWarning.
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for module_name in self.all_platforms:
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self.check_removal(module_name)
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def test_platform_specific_removals(self):
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# Test the removal of platform-specific modules.
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for module_name in self.inclusive_platforms.get(sys.platform, []):
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self.check_removal(module_name, optional=True)
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def test_optional_module_removals(self):
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# Test the removal of modules that may or may not be built.
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for module_name in self.optional_modules:
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self.check_removal(module_name, optional=True)
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def test_os_path_walk(self):
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msg = "In 3.x, os.path.walk is removed in favor of os.walk."
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def dumbo(where, names, args): pass
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for path_mod in ("ntpath", "macpath", "os2emxpath", "posixpath"):
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mod = __import__(path_mod)
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with catch_warning() as w:
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# Since os3exmpath just imports it from ntpath
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warnings.simplefilter("always")
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mod.walk(".", dumbo, None)
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self.assertEquals(str(w.message), msg)
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class TestStdlibRenames(unittest.TestCase):
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renames = {'copy_reg': 'copyreg', 'Queue': 'queue',
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'SocketServer': 'socketserver'}
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def check_rename(self, module_name, new_module_name):
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"""Make sure that:
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- A DeprecationWarning is raised when importing using the
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old 2.x module name.
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- The module can be imported using the new 3.x name.
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- The warning message specify both names.
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"""
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with CleanImport(module_name):
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with catch_warning(record=False) as w:
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warnings.filterwarnings("error", ".+ renamed to",
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DeprecationWarning)
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try:
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__import__(module_name, level=0)
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except DeprecationWarning as exc:
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self.assert_(module_name in exc.args[0])
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self.assert_(new_module_name in exc.args[0])
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else:
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self.fail("DeprecationWarning not raised for %s" %
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module_name)
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with CleanImport(new_module_name):
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try:
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__import__(new_module_name, level=0)
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except ImportError:
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self.fail("cannot import %s with its 3.x name, %s" %
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module_name, new_module_name)
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except DeprecationWarning:
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self.fail("unexpected DeprecationWarning raised for %s" %
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module_name)
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def test_module_renames(self):
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for module_name, new_module_name in self.renames.items():
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self.check_rename(module_name, new_module_name)
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def test_main():
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run_unittest(TestPy3KWarnings,
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TestStdlibRemovals,
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TestStdlibRenames)
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if __name__ == '__main__':
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test_main()
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