summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_pkg.py
blob: 2e293f4fbe537022091bf09a36797da27aea7f58 (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
280
281
282
283
284
285
# Test packages (dotted-name import)

import sys
import os
import tempfile
import textwrap
import unittest
from test import support


# Helpers to create and destroy hierarchies.

def cleanout(root):
    names = os.listdir(root)
    for name in names:
        fullname = os.path.join(root, name)
        if os.path.isdir(fullname) and not os.path.islink(fullname):
            cleanout(fullname)
        else:
            os.remove(fullname)
    os.rmdir(root)

def fixdir(lst):
    if "__builtins__" in lst:
        lst.remove("__builtins__")
    return lst


# XXX Things to test
#
# import package without __init__
# import package with __init__
# __init__ importing submodule
# __init__ importing global module
# __init__ defining variables
# submodule importing other submodule
# submodule importing global module
# submodule import submodule via global name
# from package import submodule
# from package import subpackage
# from package import variable (defined in __init__)
# from package import * (defined in __init__)


class TestPkg(unittest.TestCase):

    def setUp(self):
        self.root = None
        self.pkgname = None
        self.syspath = list(sys.path)
        self.modules_before = support.modules_setup()

    def tearDown(self):
        sys.path[:] = self.syspath
        support.modules_cleanup(*self.modules_before)
        cleanout(self.root)

        # delete all modules concerning the tested hiearchy
        if self.pkgname:
            modules = [name for name in sys.modules
                       if self.pkgname in name.split('.')]
            for name in modules:
                del sys.modules[name]

    def run_code(self, code):
        exec(textwrap.dedent(code), globals(), {"self": self})

    def mkhier(self, descr):
        root = tempfile.mkdtemp()
        sys.path.insert(0, root)
        if not os.path.isdir(root):
            os.mkdir(root)
        for name, contents in descr:
            comps = name.split()
            fullname = root
            for c in comps:
                fullname = os.path.join(fullname, c)
            if contents is None:
                os.mkdir(fullname)
            else:
                f = open(fullname, "w")
                f.write(contents)
                if contents and contents[-1] != '\n':
                    f.write('\n')
                f.close()
        self.root = root
        # package name is the name of the first item
        self.pkgname = descr[0][0]

    def test_1(self):
        hier = [("t1", None), ("t1 __init__.py", "")]
        self.mkhier(hier)
        import t1

    def test_2(self):
        hier = [
         ("t2", None),
         ("t2 __init__.py", "'doc for t2'"),
         ("t2 sub", None),
         ("t2 sub __init__.py", ""),
         ("t2 sub subsub", None),
         ("t2 sub subsub __init__.py", "spam = 1"),
        ]
        self.mkhier(hier)

        import t2
        self.assertEqual(t2.__doc__, "doc for t2")

        import t2.sub
        import t2.sub.subsub
        self.assertEqual(t2.__name__, "t2")
        self.assertEqual(t2.sub.__name__, "t2.sub")
        self.assertEqual(t2.sub.subsub.__name__, "t2.sub.subsub")

        # This exec crap is needed because Py3k forbids 'import *' outside
        # of module-scope and __import__() is insufficient for what we need.
        s = """
            import t2
            from t2 import *
            self.assertEqual(dir(), ['self', 'sub', 't2'])
            """
        self.run_code(s)

        from t2 import sub
        from t2.sub import subsub
        from t2.sub.subsub import spam
        self.assertEqual(sub.__name__, "t2.sub")
        self.assertEqual(subsub.__name__, "t2.sub.subsub")
        self.assertEqual(sub.subsub.__name__, "t2.sub.subsub")
        for name in ['spam', 'sub', 'subsub', 't2']:
            self.assertTrue(locals()["name"], "Failed to import %s" % name)

        import t2.sub
        import t2.sub.subsub
        self.assertEqual(t2.__name__, "t2")
        self.assertEqual(t2.sub.__name__, "t2.sub")
        self.assertEqual(t2.sub.subsub.__name__, "t2.sub.subsub")

        s = """
            from t2 import *
            self.assertTrue(dir(), ['self', 'sub'])
            """
        self.run_code(s)

    def test_3(self):
        hier = [
                ("t3", None),
                ("t3 __init__.py", ""),
                ("t3 sub", None),
                ("t3 sub __init__.py", ""),
                ("t3 sub subsub", None),
                ("t3 sub subsub __init__.py", "spam = 1"),
               ]
        self.mkhier(hier)

        import t3.sub.subsub
        self.assertEqual(t3.__name__, "t3")
        self.assertEqual(t3.sub.__name__, "t3.sub")
        self.assertEqual(t3.sub.subsub.__name__, "t3.sub.subsub")

    def test_4(self):
        hier = [
        ("t4.py", "raise RuntimeError('Shouldnt load t4.py')"),
        ("t4", None),
        ("t4 __init__.py", ""),
        ("t4 sub.py", "raise RuntimeError('Shouldnt load sub.py')"),
        ("t4 sub", None),
        ("t4 sub __init__.py", ""),
        ("t4 sub subsub.py",
         "raise RuntimeError('Shouldnt load subsub.py')"),
        ("t4 sub subsub", None),
        ("t4 sub subsub __init__.py", "spam = 1"),
               ]
        self.mkhier(hier)

        s = """
            from t4.sub.subsub import *
            self.assertEqual(spam, 1)
            """
        self.run_code(s)

    def test_5(self):
        hier = [
        ("t5", None),
        ("t5 __init__.py", "import t5.foo"),
        ("t5 string.py", "spam = 1"),
        ("t5 foo.py",
         "from . import string; assert string.spam == 1"),
         ]
        self.mkhier(hier)

        import t5
        s = """
            from t5 import *
            self.assertEqual(dir(), ['foo', 'self', 'string', 't5'])
            """
        self.run_code(s)

        import t5
        self.assertEqual(fixdir(dir(t5)),
                         ['__doc__', '__file__', '__name__',
                          '__package__', '__path__', 'foo', 'string', 't5'])
        self.assertEqual(fixdir(dir(t5.foo)),
                         ['__doc__', '__file__', '__name__', '__package__',
                          'string'])
        self.assertEqual(fixdir(dir(t5.string)),
                         ['__doc__', '__file__', '__name__','__package__',
                          'spam'])

    def test_6(self):
        hier = [
                ("t6", None),
                ("t6 __init__.py",
                 "__all__ = ['spam', 'ham', 'eggs']"),
                ("t6 spam.py", ""),
                ("t6 ham.py", ""),
                ("t6 eggs.py", ""),
               ]
        self.mkhier(hier)

        import t6
        self.assertEqual(fixdir(dir(t6)),
                         ['__all__', '__doc__', '__file__',
                          '__name__', '__package__', '__path__'])
        s = """
            import t6
            from t6 import *
            self.assertEqual(fixdir(dir(t6)),
                             ['__all__', '__doc__', '__file__',
                              '__name__', '__package__', '__path__',
                              'eggs', 'ham', 'spam'])
            self.assertEqual(dir(), ['eggs', 'ham', 'self', 'spam', 't6'])
            """
        self.run_code(s)

    def test_7(self):
        hier = [
                ("t7.py", ""),
                ("t7", None),
                ("t7 __init__.py", ""),
                ("t7 sub.py",
                 "raise RuntimeError('Shouldnt load sub.py')"),
                ("t7 sub", None),
                ("t7 sub __init__.py", ""),
                ("t7 sub .py",
                 "raise RuntimeError('Shouldnt load subsub.py')"),
                ("t7 sub subsub", None),
                ("t7 sub subsub __init__.py",
                 "spam = 1"),
               ]
        self.mkhier(hier)


        t7, sub, subsub = None, None, None
        import t7 as tas
        self.assertEqual(fixdir(dir(tas)),
                         ['__doc__', '__file__', '__name__',
                          '__package__', '__path__'])
        self.assertFalse(t7)
        from t7 import sub as subpar
        self.assertEqual(fixdir(dir(subpar)),
                         ['__doc__', '__file__', '__name__',
                          '__package__', '__path__'])
        self.assertFalse(t7)
        self.assertFalse(sub)
        from t7.sub import subsub as subsubsub
        self.assertEqual(fixdir(dir(subsubsub)),
                         ['__doc__', '__file__', '__name__',
                         '__package__', '__path__', 'spam'])
        self.assertFalse(t7)
        self.assertFalse(sub)
        self.assertFalse(subsub)
        from t7.sub.subsub import spam as ham
        self.assertEqual(ham, 1)
        self.assertFalse(t7)
        self.assertFalse(sub)
        self.assertFalse(subsub)


def test_main():
    support.run_unittest(__name__)


if __name__ == "__main__":
    test_main()