summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_modulefinder.py
blob: 80c06d7c30d18d5220e1987880cf4d89ac306603 (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
import __future__
import os
import unittest
import distutils.dir_util
import tempfile

from test import test_support

try: set
except NameError: from sets import Set as set

import modulefinder

# Note: To test modulefinder with Python 2.2, sets.py and
# modulefinder.py must be available - they are not in the standard
# library.

TEST_DIR = tempfile.mkdtemp()
TEST_PATH = [TEST_DIR, os.path.dirname(__future__.__file__)]

# Each test description is a list of 5 items:
#
# 1. a module name that will be imported by modulefinder
# 2. a list of module names that modulefinder is required to find
# 3. a list of module names that modulefinder should complain
#    about because they are not found
# 4. a list of module names that modulefinder should complain
#    about because they MAY be not found
# 5. a string specifying packages to create; the format is obvious imo.
#
# Each package will be created in TEST_DIR, and TEST_DIR will be
# removed after the tests again.
# Modulefinder searches in a path that contains TEST_DIR, plus
# the standard Lib directory.

maybe_test = [
    "a.module",
    ["a", "a.module", "sys",
     "b"],
    ["c"], ["b.something"],
    """\
a/__init__.py
a/module.py
                                from b import something
                                from c import something
b/__init__.py
                                from sys import *
"""]

maybe_test_new = [
    "a.module",
    ["a", "a.module", "sys",
     "b", "__future__"],
    ["c"], ["b.something"],
    """\
a/__init__.py
a/module.py
                                from b import something
                                from c import something
b/__init__.py
                                from __future__ import absolute_import
                                from sys import *
"""]

package_test = [
    "a.module",
    ["a", "a.b", "a.c", "a.module", "mymodule", "sys"],
    ["blahblah", "c"], [],
    """\
mymodule.py
a/__init__.py
                                import blahblah
                                from a import b
                                import c
a/module.py
                                import sys
                                from a import b as x
                                from a.c import sillyname
a/b.py
a/c.py
                                from a.module import x
                                import mymodule as sillyname
                                from sys import version_info
"""]

absolute_import_test = [
    "a.module",
    ["a", "a.module",
     "b", "b.x", "b.y", "b.z",
     "__future__", "sys", "gc"],
    ["blahblah", "z"], [],
    """\
mymodule.py
a/__init__.py
a/module.py
                                from __future__ import absolute_import
                                import sys # sys
                                import blahblah # fails
                                import gc # gc
                                import b.x # b.x
                                from b import y # b.y
                                from b.z import * # b.z.*
a/gc.py
a/sys.py
                                import mymodule
a/b/__init__.py
a/b/x.py
a/b/y.py
a/b/z.py
b/__init__.py
                                import z
b/unused.py
b/x.py
b/y.py
b/z.py
"""]

relative_import_test = [
    "a.module",
    ["__future__",
     "a", "a.module",
     "a.b", "a.b.y", "a.b.z",
     "a.b.c", "a.b.c.moduleC",
     "a.b.c.d", "a.b.c.e",
     "a.b.x",
     "gc"],
    [], [],
    """\
mymodule.py
a/__init__.py
                                from .b import y, z # a.b.y, a.b.z
a/module.py
                                from __future__ import absolute_import # __future__
                                import gc # gc
a/gc.py
a/sys.py
a/b/__init__.py
                                from ..b import x # a.b.x
                                #from a.b.c import moduleC
                                from .c import moduleC # a.b.moduleC
a/b/x.py
a/b/y.py
a/b/z.py
a/b/g.py
a/b/c/__init__.py
                                from ..c import e # a.b.c.e
a/b/c/moduleC.py
                                from ..c import d # a.b.c.d
a/b/c/d.py
a/b/c/e.py
a/b/c/x.py
"""]

relative_import_test_2 = [
    "a.module",
    ["a", "a.module",
     "a.sys",
     "a.b", "a.b.y", "a.b.z",
     "a.b.c", "a.b.c.d",
     "a.b.c.e",
     "a.b.c.moduleC",
     "a.b.c.f",
     "a.b.x",
     "a.another"],
    [], [],
    """\
mymodule.py
a/__init__.py
                                from . import sys # a.sys
a/another.py
a/module.py
                                from .b import y, z # a.b.y, a.b.z
a/gc.py
a/sys.py
a/b/__init__.py
                                from .c import moduleC # a.b.c.moduleC
                                from .c import d # a.b.c.d
a/b/x.py
a/b/y.py
a/b/z.py
a/b/c/__init__.py
                                from . import e # a.b.c.e
a/b/c/moduleC.py
                                #
                                from . import f   # a.b.c.f
                                from .. import x  # a.b.x
                                from ... import another # a.another
a/b/c/d.py
a/b/c/e.py
a/b/c/f.py
"""]

def open_file(path):
    ##print "#", os.path.abspath(path)
    dirname = os.path.dirname(path)
    distutils.dir_util.mkpath(dirname)
    return open(path, "w")

def create_package(source):
    ofi = None
    for line in source.splitlines():
        if line.startswith(" ") or line.startswith("\t"):
            ofi.write(line.strip() + "\n")
        else:
            ofi = open_file(os.path.join(TEST_DIR, line.strip()))

class ModuleFinderTest(unittest.TestCase):
    def _do_test(self, info, report=False):
        import_this, modules, missing, maybe_missing, source = info
        create_package(source)
        try:
            mf = modulefinder.ModuleFinder(path=TEST_PATH)
            mf.import_hook(import_this)
            if report:
                mf.report()
##                # This wouldn't work in general when executed several times:
##                opath = sys.path[:]
##                sys.path = TEST_PATH
##                try:
##                    __import__(import_this)
##                except:
##                    import traceback; traceback.print_exc()
##                sys.path = opath
##                return
            modules = set(modules)
            found = set(mf.modules.keys())
            more = list(found - modules)
            less = list(modules - found)
            # check if we found what we expected, not more, not less
            self.failUnlessEqual((more, less), ([], []))

            # check for missing and maybe missing modules
            bad, maybe = mf.any_missing_maybe()
            self.failUnlessEqual(bad, missing)
            self.failUnlessEqual(maybe, maybe_missing)
        finally:
            distutils.dir_util.remove_tree(TEST_DIR)

    def test_package(self):
        self._do_test(package_test)

    def test_maybe(self):
        self._do_test(maybe_test)

    if getattr(__future__, "absolute_import", None):

        def test_maybe_new(self):
            self._do_test(maybe_test_new)

        def test_absolute_imports(self):
            self._do_test(absolute_import_test)

        def test_relative_imports(self):
            self._do_test(relative_import_test)

        def test_relative_imports_2(self):
            self._do_test(relative_import_test_2)

def test_main():
    distutils.log.set_threshold(distutils.log.WARN)
    test_support.run_unittest(ModuleFinderTest)

if __name__ == "__main__":
    unittest.main()