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
|
# Copyright 2017 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Tests for parsepy.py."""
import tempfile
import textwrap
import unittest
import sys
from importlab import parsepy
class TestParsePy(unittest.TestCase):
"""Tests for parsepy.py."""
def parse(self, src):
with tempfile.NamedTemporaryFile() as f:
src = textwrap.dedent(src)
if sys.version_info[0] == 3:
src = src.encode('utf-8')
f.write(src)
f.flush()
return parsepy.get_imports(f.name, sys.version_info[:2])
def test_simple(self):
self.assertEqual(self.parse("""
import a
"""), [parsepy.ImportStatement(name='a')])
def test_dotted(self):
self.assertEqual(self.parse("""
import a.b
"""), [parsepy.ImportStatement(name='a.b')])
def test_as(self):
self.assertEqual(self.parse("""
import a as b
"""), [parsepy.ImportStatement(name='a', new_name='b')])
def test_dotted_as(self):
self.assertEqual(self.parse("""
import a.b as c
"""), [parsepy.ImportStatement(name='a.b', new_name='c')])
def test_dotted_comma(self):
self.assertEqual(self.parse("""
import a.b, c
"""), [parsepy.ImportStatement(name='a.b'),
parsepy.ImportStatement(name='c')])
def test_multiple_1(self):
self.assertEqual(self.parse("""
import a, b, c, d
"""), [parsepy.ImportStatement(name='a'),
parsepy.ImportStatement(name='b'),
parsepy.ImportStatement(name='c'),
parsepy.ImportStatement(name='d')])
def test_multiple_2(self):
self.assertEqual(self.parse("""
import a, b as bb
"""), [parsepy.ImportStatement(name='a'),
parsepy.ImportStatement(name='b', new_name='bb')])
def test_multiple_3(self):
self.assertEqual(self.parse("""
import a, b as bb, a.x, a.x.y as a_x_y
"""), [parsepy.ImportStatement(name='a'),
parsepy.ImportStatement(name='b', new_name='bb'),
parsepy.ImportStatement(name='a.x', new_name='a.x'),
parsepy.ImportStatement(name='a.x.y', new_name='a_x_y'),
])
def test_multiple_4(self):
self.assertEqual(self.parse("""
import a
import b
import c
import d
"""), [parsepy.ImportStatement(name='a'),
parsepy.ImportStatement(name='b'),
parsepy.ImportStatement(name='c'),
parsepy.ImportStatement(name='d')])
def test_from(self):
self.assertEqual(self.parse("""
from a import b
"""), [parsepy.ImportStatement(name='a.b', new_name='b', is_from=True)])
def test_from_with_rename(self):
self.assertEqual(self.parse("""
from a import b as c
"""), [parsepy.ImportStatement(name='a.b', new_name='c', is_from=True)])
def test_dotted_from(self):
self.assertEqual(self.parse("""
from a.b.c import d as e
"""), [parsepy.ImportStatement(name='a.b.c.d', new_name='e', is_from=True)])
def test_from_multiple(self):
self.assertEqual(self.parse("""
from a import b, c, d as dd
"""), [parsepy.ImportStatement(name='a.b', new_name='b', is_from=True),
parsepy.ImportStatement(name='a.c', new_name='c', is_from=True),
parsepy.ImportStatement(name='a.d', new_name='dd', is_from=True)])
def test_from_parentheses(self):
self.assertEqual(self.parse("""
from a import (b, c, d as dd)
"""), [parsepy.ImportStatement(name='a.b', new_name='b', is_from=True),
parsepy.ImportStatement(name='a.c', new_name='c', is_from=True),
parsepy.ImportStatement(name='a.d', new_name='dd', is_from=True)])
def test_asterisk(self):
self.assertEqual(self.parse("""
from a import *
from a.b import *
from a . b . c import *
"""), [parsepy.ImportStatement(name='a', is_from=True, is_star=True),
parsepy.ImportStatement(name='a.b', is_from=True, is_star=True),
parsepy.ImportStatement(
name='a.b.c', is_from=True, is_star=True)])
def test_dot(self):
self.assertEqual(self.parse("""
from . import a
from .a import b
from .a.b import c
from .a.b.c import *
"""), [parsepy.ImportStatement(name='.a', new_name='a', is_from=True),
parsepy.ImportStatement(name='.a.b', new_name='b', is_from=True),
parsepy.ImportStatement(name='.a.b.c', new_name='c', is_from=True),
parsepy.ImportStatement(
name='.a.b.c', is_from=True, is_star=True)])
def test_dotdot(self):
self.assertEqual(self.parse("""
from .. import a
from ..a import b
from ..a.b import c
from ..a.b.c import *
"""), [parsepy.ImportStatement(name='..a', new_name='a', is_from=True),
parsepy.ImportStatement(name='..a.b', new_name='b', is_from=True),
parsepy.ImportStatement(name='..a.b.c', new_name='c', is_from=True),
parsepy.ImportStatement(
name='..a.b.c', is_from=True, is_star=True)])
def test_dotdotdot_asterisk(self):
self.assertEqual(self.parse("""
from ... import *
"""), [parsepy.ImportStatement(name='...', is_from=True, is_star=True)])
def test_dot_multiple(self):
self.assertEqual(self.parse("""
from . import a, b, c as cc
"""), [parsepy.ImportStatement(name='.a', new_name='a', is_from=True),
parsepy.ImportStatement(name='.b', new_name='b', is_from=True),
parsepy.ImportStatement(name='.c', new_name='cc', is_from=True)])
def test_encoding_utf8(self):
self.assertEqual(self.parse("""
# -*- coding: utf-8 -*-
# Author: Lo\x6f\xc3\xafc Fooman
import a
"""), [parsepy.ImportStatement(name='a')])
def test_encoding_latin1(self):
self.assertEqual(self.parse("""
# -*- coding: iso-8859-1 -*-
# Author: Thomas Sch\xf6n
import a
"""), [parsepy.ImportStatement(name='a')])
def test_print_function(self):
self.assertEqual(self.parse("""
from __future__ import print_function
import sys
print("hello world", file=sys.stdout)
"""), [parsepy.ImportStatement(name='__future__.print_function',
new_name='print_function', is_from=True),
parsepy.ImportStatement(name='sys')])
def test_non_utf8(self):
"""Verify that we can parse files with non-utf8 encoding."""
if sys.version_info[0] == 3:
# TODO(mdemello): Get this working under python3
return
src = (
b'# -*- coding: iso-8859-1 -*-\n' +
b'# Copyright (C) 1984 F' + chr(0xf6) + b'man\n'
)
self.assertRaises(UnicodeDecodeError, unicode, src) # noqa: F821
self.assertEqual(self.parse(src), [])
def test_syntax_error(self):
with self.assertRaises(parsepy.ParseError):
self.parse("foo(]")
if __name__ == '__main__':
unittest.main()
|
