summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_extcall.py
blob: 3e0426f286658eeeee255255b8779e6054d98b20 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
from test.test_support import verify, verbose, TestFailed, sortdict
from UserList import UserList

def e(a, b):
    print(a, b)

def f(*a, **k):
    print(a, sortdict(k))

def g(x, *y, **z):
    print(x, y, sortdict(z))

def h(j=1, a=2, h=3):
    print(j, a, h)

f()
f(1)
f(1, 2)
f(1, 2, 3)

f(1, 2, 3, *(4, 5))
f(1, 2, 3, *[4, 5])
f(1, 2, 3, *UserList([4, 5]))
f(1, 2, 3, **{'a':4, 'b':5})
f(1, 2, 3, *(4, 5), **{'a':6, 'b':7})
f(1, 2, 3, x=4, y=5, *(6, 7), **{'a':8, 'b':9})

# Verify clearing of SF bug #733667
try:
    e(c=3)
except TypeError:
    pass
else:
    print("should raise TypeError: e() got an unexpected keyword argument 'c'")

try:
    g()
except TypeError as err:
    print("TypeError:", err)
else:
    print("should raise TypeError: not enough arguments; expected 1, got 0")

try:
    g(*())
except TypeError as err:
    print("TypeError:", err)
else:
    print("should raise TypeError: not enough arguments; expected 1, got 0")

try:
    g(*(), **{})
except TypeError as err:
    print("TypeError:", err)
else:
    print("should raise TypeError: not enough arguments; expected 1, got 0")

g(1)
g(1, 2)
g(1, 2, 3)
g(1, 2, 3, *(4, 5))
class Nothing: pass
try:
    g(*Nothing())
except TypeError as attr:
    pass
else:
    print("should raise TypeError")

class Nothing:
    def __len__(self):
        return 5
try:
    g(*Nothing())
except TypeError as attr:
    pass
else:
    print("should raise TypeError")

class Nothing:
    def __len__(self):
        return 5
    def __getitem__(self, i):
        if i < 3:
            return i
        else:
            raise IndexError, i
g(*Nothing())

class Nothing:
    def __init__(self):
        self.c = 0
    def __iter__(self):
        return self
try:
    g(*Nothing())
except TypeError as attr:
    pass
else:
    print("should raise TypeError")

class Nothing:
    def __init__(self):
        self.c = 0
    def __iter__(self):
        return self
    def next(self):
        if self.c == 4:
            raise StopIteration
        c = self.c
        self.c += 1
        return c
g(*Nothing())

# make sure the function call doesn't stomp on the dictionary?
d = {'a': 1, 'b': 2, 'c': 3}
d2 = d.copy()
verify(d == d2)
g(1, d=4, **d)
print(sortdict(d))
print(sortdict(d2))
verify(d == d2, "function call modified dictionary")

# what about willful misconduct?
def saboteur(**kw):
    kw['x'] = locals() # yields a cyclic kw
    return kw
d = {}
kw = saboteur(a=1, **d)
verify(d == {})
# break the cycle
del kw['x']

try:
    g(1, 2, 3, **{'x':4, 'y':5})
except TypeError as err:
    print(err)
else:
    print("should raise TypeError: keyword parameter redefined")

try:
    g(1, 2, 3, a=4, b=5, *(6, 7), **{'a':8, 'b':9})
except TypeError as err:
    print(err)
else:
    print("should raise TypeError: keyword parameter redefined")

try:
    f(**{1:2})
except TypeError as err:
    print(err)
else:
    print("should raise TypeError: keywords must be strings")

try:
    h(**{'e': 2})
except TypeError as err:
    print(err)
else:
    print("should raise TypeError: unexpected keyword argument: e")

try:
    h(*h)
except TypeError as err:
    print(err)
else:
    print("should raise TypeError: * argument must be a tuple")

try:
    dir(*h)
except TypeError as err:
    print(err)
else:
    print("should raise TypeError: * argument must be a tuple")

try:
    None(*h)
except TypeError as err:
    print(err)
else:
    print("should raise TypeError: * argument must be a tuple")

try:
    h(**h)
except TypeError as err:
    print(err)
else:
    print("should raise TypeError: ** argument must be a dictionary")

try:
    dir(**h)
except TypeError as err:
    print(err)
else:
    print("should raise TypeError: ** argument must be a dictionary")

try:
    None(**h)
except TypeError as err:
    print(err)
else:
    print("should raise TypeError: ** argument must be a dictionary")

try:
    dir(b=1,**{'b':1})
except TypeError as err:
    print(err)
else:
    print("should raise TypeError: dir() got multiple values for keyword argument 'b'")

def f2(*a, **b):
    return a, b

d = {}
for i in range(512):
    key = 'k%d' % i
    d[key] = i
a, b = f2(1, *(2, 3), **d)
print(len(a), len(b), b == d)

class Foo:
    def method(self, arg1, arg2):
        return arg1 + arg2

x = Foo()
print(Foo.method(*(x, 1, 2)))
print(Foo.method(x, *(1, 2)))
try:
    print(Foo.method(*(1, 2, 3)))
except TypeError as err:
    pass
else:
    print('expected a TypeError for unbound method call')
try:
    print(Foo.method(1, *(2, 3)))
except TypeError as err:
    pass
else:
    print('expected a TypeError for unbound method call')

# A PyCFunction that takes only positional parameters should allow an
# empty keyword dictionary to pass without a complaint, but raise a
# TypeError if the dictionary is non-empty.
id(1, **{})
try:
    id(1, **{"foo": 1})
except TypeError:
    pass
else:
    raise TestFailed, 'expected TypeError; no exception raised'

a, b, d, e, v, k = 'A', 'B', 'D', 'E', 'V', 'K'
funcs = []
maxargs = {}
for args in ['', 'a', 'ab']:
    for defargs in ['', 'd', 'de']:
        for vararg in ['', 'v']:
            for kwarg in ['', 'k']:
                name = 'z' + args + defargs + vararg + kwarg
                arglist = list(args) + map(
                    lambda x: '%s="%s"' % (x, x), defargs)
                if vararg: arglist.append('*' + vararg)
                if kwarg: arglist.append('**' + kwarg)
                decl = (('def %s(%s): print("ok %s", a, b, d, e, v, ' +
                         'type(k) is type ("") and k or sortdict(k))')
                         % (name, ', '.join(arglist), name))
                exec(decl)
                func = eval(name)
                funcs.append(func)
                maxargs[func] = len(args + defargs)

for name in ['za', 'zade', 'zabk', 'zabdv', 'zabdevk']:
    func = eval(name)
    for args in [(), (1, 2), (1, 2, 3, 4, 5)]:
        for kwargs in ['', 'a', 'd', 'ad', 'abde']:
            kwdict = {}
            for k in kwargs: kwdict[k] = k + k
            print(func.func_name, args, sortdict(kwdict), '->', end=' ')
            try: func(*args, **kwdict)
            except TypeError as err: print(err)