Python test_support.verify函数代码示例

def test_im_name():
    class C:
        def foo(self): pass
    verify(C.foo.__name__ == "foo")
    verify(C().foo.__name__ == "foo")
    cantset(C.foo, "__name__", "foo")
    cantset(C().foo, "__name__", "foo")

def test_float_overflow():
    import math

    if verbose:
        print "long->float overflow"

    for x in -2.0, -1.0, 0.0, 1.0, 2.0:
        verify(float(long(x)) == x)

    shuge = '12345' * 1000
    huge = 1L << 30000
    mhuge = -huge
    namespace = {'huge': huge, 'mhuge': mhuge, 'shuge': shuge, 'math': math}
    for test in ["float(huge)", "float(mhuge)",
                 "complex(huge)", "complex(mhuge)",
                 "complex(huge, 1)", "complex(mhuge, 1)",
                 "complex(1, huge)", "complex(1, mhuge)",
                 "1. + huge", "huge + 1.", "1. + mhuge", "mhuge + 1.",
                 "1. - huge", "huge - 1.", "1. - mhuge", "mhuge - 1.",
                 "1. * huge", "huge * 1.", "1. * mhuge", "mhuge * 1.",
                 "1. // huge", "huge // 1.", "1. // mhuge", "mhuge // 1.",
                 "1. / huge", "huge / 1.", "1. / mhuge", "mhuge / 1.",
                 "1. ** huge", "huge ** 1.", "1. ** mhuge", "mhuge ** 1.",
                 "math.sin(huge)", "math.sin(mhuge)",
                 "math.sqrt(huge)", "math.sqrt(mhuge)", # should do better
                 "math.floor(huge)", "math.floor(mhuge)",
                 "float(shuge) == long(shuge)"]:

        try:
            eval(test, namespace)
        except OverflowError:
            pass
        else:
            raise TestFailed("expected OverflowError from %s" % test)

def drive_one(pattern, length):
    q, r = divmod(length, len(pattern))
    teststring = pattern * q + pattern[:r]
    verify(len(teststring) == length)
    try_one(teststring)
    try_one(teststring + "x")
    try_one(teststring[:-1])

def check_all(modname):
    names = {}
    try:
        exec "import %s" % modname in names
    except ImportError:
        # Silent fail here seems the best route since some modules
        # may not be available in all environments.
        # Since an ImportError may leave a partial module object in
        # sys.modules, get rid of that first.  Here's what happens if
        # you don't:  importing pty fails on Windows because pty tries to
        # import FCNTL, which doesn't exist.  That raises an ImportError,
        # caught here.  It also leaves a partial pty module in sys.modules.
        # So when test_pty is called later, the import of pty succeeds,
        # but shouldn't.  As a result, test_pty crashes with an
        # AttributeError instead of an ImportError, and regrtest interprets
        # the latter as a test failure (ImportError is treated as "test
        # skipped" -- which is what test_pty should say on Windows).
        try:
            del sys.modules[modname]
        except KeyError:
            pass
        return
    verify(hasattr(sys.modules[modname], "__all__"),
           "%s has no __all__ attribute" % modname)
    names = {}
    exec "from %s import *" % modname in names
    if names.has_key("__builtins__"):
        del names["__builtins__"]
    keys = names.keys()
    keys.sort()
    all = list(sys.modules[modname].__all__) # in case it's a tuple
    all.sort()
    verify(keys==all, "%s != %s" % (keys, all))

def test_logs():
    import math

    if verbose:
        print "log and log10"

    LOG10E = math.log10(math.e)

    for exp in range(10) + [100, 1000, 10000]:
        value = 10 ** exp
        log10 = math.log10(value)
        verify(fcmp(log10, exp) == 0)

        # log10(value) == exp, so log(value) == log10(value)/log10(e) ==
        # exp/LOG10E
        expected = exp / LOG10E
        log = math.log(value)
        verify(fcmp(log, expected) == 0)

    for bad in -(1L << 10000), -2L, 0L:
        try:
            math.log(bad)
            raise TestFailed("expected ValueError from log(<= 0)")
        except ValueError:
            pass

        try:
            math.log10(bad)
            raise TestFailed("expected ValueError from log10(<= 0)")
        except ValueError:
            pass

def test_im_doc():
    class C:
        def foo(self): "hello"
    verify(C.foo.__doc__ == "hello")
    verify(C().foo.__doc__ == "hello")
    cantset(C.foo, "__doc__", "hello")
    cantset(C().foo, "__doc__", "hello")

def test_im_class():
    class C:
        def foo(self): pass
    verify(C.foo.im_class is C)
    verify(C().foo.im_class is C)
    cantset(C.foo, "im_class", C)
    cantset(C().foo, "im_class", C)

def test_im_self():
    class C:
        def foo(self): pass
    verify(C.foo.im_self is None)
    c = C()
    verify(c.foo.im_self is c)
    cantset(C.foo, "im_self", None)
    cantset(c.foo, "im_self", c)

def test_im_dict():
    class C:
        def foo(self): pass
        foo.bar = 42
    verify(C.foo.__dict__ == {'bar': 42})
    verify(C().foo.__dict__ == {'bar': 42})
    cantset(C.foo, "__dict__", C.foo.__dict__)
    cantset(C().foo, "__dict__", C.foo.__dict__)

def test_func_code():
    def f(): pass
    def g(): print 12
    #XXX: changed to isinstance for jython
    #verify(type(f.func_code) is types.CodeType)
    verify(isinstance(f.func_code, types.CodeType))
    f.func_code = g.func_code
    cantset(f, "func_code", None)

def test_im_func():
    def foo(self): pass
    class C:
        pass
    C.foo = foo
    verify(C.foo.im_func is foo)
    verify(C().foo.im_func is foo)
    cantset(C.foo, "im_func", foo)
    cantset(C().foo, "im_func", foo)

def testdgram(proto, addr):
    s = socket.socket(proto, socket.SOCK_DGRAM)
    s.sendto(teststring, addr)
    buf = data = receive(s, 100)
    while data and '\n' not in buf:
        data = receive(s, 100)
        buf += data
    verify(buf == teststring)
    s.close()

def teststream(proto, addr):
    s = socket.socket(proto, socket.SOCK_STREAM)
    s.connect(addr)
    s.sendall(teststring)
    buf = data = receive(s, 100)
    while data and '\n' not in buf:
        data = receive(s, 100)
        buf += data
    verify(buf == teststring)
    s.close()

def test(openmethod, what):

    if verbose:
        print '\nTesting: ', what

    fname = tempfile.mktemp()
    f = openmethod(fname, 'c')
    verify(f.keys() == [])
    if verbose:
        print 'creation...'
    f['0'] = ''
    f['a'] = 'Guido'
    f['b'] = 'van'
    f['c'] = 'Rossum'
    f['d'] = 'invented'
    f['f'] = 'Python'
    if verbose:
        print '%s %s %s' % (f['a'], f['b'], f['c'])

    if what == 'BTree' :
        if verbose:
            print 'key ordering...'
        f.set_location(f.first()[0])
        while 1:
            try:
                rec = f.next()
            except KeyError:
                if rec != f.last():
                    print 'Error, last != last!'
                f.previous()
                break
            if verbose:
                print rec
        if not f.has_key('a'):
            print 'Error, missing key!'

    f.sync()
    f.close()
    if verbose:
        print 'modification...'
    f = openmethod(fname, 'w')
    f['d'] = 'discovered'

    if verbose:
        print 'access...'
    for key in f.keys():
        word = f[key]
        if verbose:
            print word

    f.close()
    try:
        os.remove(fname)
    except os.error:
        pass

def query_errors():
    print "Testing query interface..."
    cf = ConfigParser.ConfigParser()
    verify(cf.sections() == [],
           "new ConfigParser should have no defined sections")
    verify(not cf.has_section("Foo"),
           "new ConfigParser should have no acknowledged sections")
    try:
        cf.options("Foo")
    except ConfigParser.NoSectionError, e:
        pass