summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_uu.py
blob: 26d1a7ab4fe96f6a4d1c04804b37de1c718eb010 (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
"""
Tests for uu module.
Nick Mathewson
"""

import unittest
from test import test_support

import sys, os, uu, cStringIO
import uu
from StringIO import StringIO

plaintext = "The smooth-scaled python crept over the sleeping dog\n"

encodedtext = """\
M5&AE('-M;V]T:\"US8V%L960@<'ET:&]N(&-R97!T(&]V97(@=&AE('-L965P
(:6YG(&1O9PH """

encodedtextwrapped = "begin %03o %s\n" + encodedtext.replace("%", "%%") + "\n \nend\n"

class UUTest(unittest.TestCase):

    def test_encode(self):
        inp = cStringIO.StringIO(plaintext)
        out = cStringIO.StringIO()
        uu.encode(inp, out, "t1")
        self.assertEqual(out.getvalue(), encodedtextwrapped % (0666, "t1"))
        inp = cStringIO.StringIO(plaintext)
        out = cStringIO.StringIO()
        uu.encode(inp, out, "t1", 0644)
        self.assertEqual(out.getvalue(), encodedtextwrapped % (0644, "t1"))

    def test_decode(self):
        inp = cStringIO.StringIO(encodedtextwrapped % (0666, "t1"))
        out = cStringIO.StringIO()
        uu.decode(inp, out)
        self.assertEqual(out.getvalue(), plaintext)
        inp = cStringIO.StringIO(
            "UUencoded files may contain many lines,\n" +
            "even some that have 'begin' in them.\n" +
            encodedtextwrapped % (0666, "t1")
        )
        out = cStringIO.StringIO()
        uu.decode(inp, out)
        self.assertEqual(out.getvalue(), plaintext)

    def test_truncatedinput(self):
        inp = cStringIO.StringIO("begin 644 t1\n" + encodedtext)
        out = cStringIO.StringIO()
        try:
            uu.decode(inp, out)
            self.fail("No exception thrown")
        except uu.Error, e:
            self.assertEqual(str(e), "Truncated input file")

    def test_missingbegin(self):
        inp = cStringIO.StringIO("")
        out = cStringIO.StringIO()
        try:
            uu.decode(inp, out)
            self.fail("No exception thrown")
        except uu.Error, e:
            self.assertEqual(str(e), "No valid begin line found in input file")

class UUStdIOTest(unittest.TestCase):

    def setUp(self):
        self.stdin = sys.stdin
        self.stdout = sys.stdout

    def tearDown(self):
        sys.stdin = self.stdin
        sys.stdout = self.stdout

    def test_encode(self):
        sys.stdin = cStringIO.StringIO(plaintext)
        sys.stdout = cStringIO.StringIO()
        uu.encode("-", "-", "t1", 0666)
        self.assertEqual(
            sys.stdout.getvalue(),
            encodedtextwrapped % (0666, "t1")
        )

    def test_decode(self):
        sys.stdin = cStringIO.StringIO(encodedtextwrapped % (0666, "t1"))
        sys.stdout = cStringIO.StringIO()
        uu.decode("-", "-")
        self.assertEqual(sys.stdout.getvalue(), plaintext)

class UUFileTest(unittest.TestCase):

    def _kill(self, f):
        # close and remove file
        try:
            f.close()
        except (SystemExit, KeyboardInterrupt):
            raise
        except:
            pass
        try:
            os.unlink(f.name)
        except (SystemExit, KeyboardInterrupt):
            raise
        except:
            pass

    def setUp(self):
        self.tmpin  = test_support.TESTFN + "i"
        self.tmpout = test_support.TESTFN + "o"

    def tearDown(self):
        del self.tmpin
        del self.tmpout

    def test_encode(self):
        try:
            fin = open(self.tmpin, 'wb')
            fin.write(plaintext)
            fin.close()

            fin = open(self.tmpin, 'rb')
            fout = open(self.tmpout, 'w')
            uu.encode(fin, fout, self.tmpin, mode=0644)
            fin.close()
            fout.close()

            fout = open(self.tmpout, 'r')
            s = fout.read()
            fout.close()
            self.assertEqual(s, encodedtextwrapped % (0644, self.tmpin))
        finally:
            self._kill(fin)
            self._kill(fout)

    def test_decode(self):
        try:
            f = open(self.tmpin, 'wb')
            f.write(encodedtextwrapped % (0644, self.tmpout))
            f.close()

            f = open(self.tmpin, 'rb')
            uu.decode(f)
            f.close()

            f = open(self.tmpout, 'r')
            s = f.read()
            f.close()
            self.assertEqual(s, plaintext)
            # XXX is there an xp way to verify the mode?
        finally:
            self._kill(f)

    def test_decodetwice(self):
        # Verify that decode() will refuse to overwrite an existing file
        try:
            f = cStringIO.StringIO(encodedtextwrapped % (0644, self.tmpout))

            f = open(self.tmpin, 'rb')
            uu.decode(f)
            f.close()

            f = open(self.tmpin, 'rb')
            self.assertRaises(uu.Error, uu.decode, f)
            f.close()
        finally:
            self._kill(f)

def test_main():
    test_support.run_unittest(UUTest, UUStdIOTest, UUFileTest)

if __name__=="__main__":
    test_main()