mirror of
https://github.com/python/cpython.git
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299 lines
12 KiB
Python
299 lines
12 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_backquote(self):
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expected = 'backquote not supported in 3.x; use repr()'
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with catch_warning() as w:
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exec "`2`" in {}
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self.assertWarning(None, w, expected)
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def test_bool_assign(self):
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# So we don't screw up our globals
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def safe_exec(expr):
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def f(**kwargs): pass
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exec expr in {'f' : f}
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expected = "assignment to True or False is forbidden in 3.x"
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with catch_warning() as w:
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safe_exec("True = False")
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self.assertWarning(None, w, expected)
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with catch_warning() as w:
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safe_exec("False = True")
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self.assertWarning(None, w, expected)
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with catch_warning() as w:
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try:
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safe_exec("obj.False = True")
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except NameError: pass
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self.assertWarning(None, w, expected)
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with catch_warning() as w:
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try:
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safe_exec("obj.True = False")
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except NameError: pass
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self.assertWarning(None, w, expected)
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with catch_warning() as w:
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safe_exec("def False(): pass")
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self.assertWarning(None, w, expected)
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with catch_warning() as w:
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safe_exec("def True(): pass")
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self.assertWarning(None, w, expected)
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with catch_warning() as w:
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safe_exec("class False: pass")
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self.assertWarning(None, w, expected)
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with catch_warning() as w:
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safe_exec("class True: pass")
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self.assertWarning(None, w, expected)
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with catch_warning() as w:
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safe_exec("def f(True=43): pass")
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self.assertWarning(None, w, expected)
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with catch_warning() as w:
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safe_exec("def f(False=None): pass")
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self.assertWarning(None, w, expected)
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with catch_warning() as w:
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safe_exec("f(False=True)")
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self.assertWarning(None, w, expected)
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with catch_warning() as w:
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safe_exec("f(True=1)")
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self.assertWarning(None, w, expected)
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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_tuple_parameter_unpacking(self):
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expected = "tuple parameter unpacking has been removed in 3.x"
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with catch_warning() as w:
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exec "def f((a, b)): pass"
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self.assertWarning(None, 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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def test_file_xreadlines(self):
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expected = ("f.xreadlines() not supported in 3.x, "
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"try 'for line in f' instead")
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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.xreadlines(), 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', 'mimetools', 'fpformat',
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'ihooks', 'mhlib', 'statvfs', 'htmllib', 'sgmllib', 'rfc822')
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inclusive_platforms = {'irix' : ('pure', 'AL', 'al', 'CD', 'cd', 'cddb',
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'cdplayer', 'CL', 'cl', 'DEVICE', 'GL',
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'gl', 'ERRNO', 'FILE', 'FL', 'flp', 'fl',
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'fm', 'GET', 'GLWS', 'imgfile', 'IN',
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'IOCTL', 'jpeg', 'panel', 'panelparser',
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'readcd', 'SV', 'torgb', 'WAIT'),
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'darwin' : ('autoGIL', 'Carbon', 'OSATerminology',
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'icglue', 'Nav', 'MacOS', 'aepack',
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'aetools', 'aetypes', 'applesingle',
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'appletrawmain', 'appletrunner',
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'argvemulator', 'bgenlocations',
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'EasyDialogs', 'macerrors', 'macostools',
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'findertools', 'FrameWork', 'ic',
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'gensuitemodule', 'icopen', 'macresource',
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'MiniAEFrame', 'pimp', 'PixMapWrapper',
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'terminalcommand', 'videoreader',
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'_builtinSuites', 'CodeWarrior',
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'Explorer', 'Finder', 'Netscape',
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'StdSuites', 'SystemEvents', 'Terminal',
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'cfmfile', 'bundlebuilder', 'buildtools',
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'ColorPicker'),
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'sunos5' : ('sunaudiodev', 'SUNAUDIODEV'),
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}
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optional_modules = ('bsddb185', 'Canvas', 'dl', 'linuxaudiodev', 'imageop',
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'sv', 'cPickle')
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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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"%s warning didn't contain module name"
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% module_name)
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except ImportError:
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if not optional:
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self.fail("Non-optional module {0} raised an "
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"ImportError.".format(module_name))
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else:
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self.fail("DeprecationWarning not raised for {0}"
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.format(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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mod.walk("crashers", dumbo, None)
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self.assertEquals(str(w.message), msg)
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def test_commands_members(self):
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import commands
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members = {"mk2arg" : 2, "mkarg" : 1, "getstatus" : 1}
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for name, arg_count in members.items():
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with catch_warning(record=False):
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warnings.filterwarnings("error")
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func = getattr(commands, name)
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self.assertRaises(DeprecationWarning, func, *([None]*arg_count))
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def test_mutablestring_removal(self):
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# UserString.MutableString has been removed in 3.0.
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import UserString
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with catch_warning(record=False):
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warnings.filterwarnings("error", ".*MutableString",
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DeprecationWarning)
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self.assertRaises(DeprecationWarning, UserString.MutableString)
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def test_main():
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with catch_warning(record=True):
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warnings.simplefilter("always")
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run_unittest(TestPy3KWarnings,
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TestStdlibRemovals)
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if __name__ == '__main__':
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test_main()
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