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
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
|
# -*- encoding: binary -*-
require_relative '../../../spec_helper'
require_relative '../fixtures/classes'
require_relative 'shared/basic'
require_relative 'shared/taint'
describe "Array#pack with format 'M'" do
it_behaves_like :array_pack_basic, 'M'
it_behaves_like :array_pack_basic_non_float, 'M'
it_behaves_like :array_pack_arguments, 'M'
it_behaves_like :array_pack_taint, 'M'
it "encodes an empty string as an empty string" do
[""].pack("M").should == ""
end
it "encodes nil as an empty string" do
[nil].pack("M").should == ""
end
it "appends a soft line break at the end of an encoded string" do
["a"].pack("M").should == "a=\n"
end
it "does not append a soft break if the string ends with a newline" do
["a\n"].pack("M").should == "a\n"
end
it "encodes one element for each directive" do
["a", "b", "c"].pack("MM").should == "a=\nb=\n"
end
it "encodes byte values 33..60 directly" do
[ [["!\"\#$%&'()*+,-./"], "!\"\#$%&'()*+,-./=\n"],
[["0123456789"], "0123456789=\n"],
[[":;<"], ":;<=\n"]
].should be_computed_by(:pack, "M")
end
it "encodes byte values 62..126 directly" do
[ [[">?@"], ">?@=\n"],
[["ABCDEFGHIJKLMNOPQRSTUVWXYZ"], "ABCDEFGHIJKLMNOPQRSTUVWXYZ=\n"],
[["[\\]^_`"], "[\\]^_`=\n"],
[["abcdefghijklmnopqrstuvwxyz"], "abcdefghijklmnopqrstuvwxyz=\n"],
[["{|}~"], "{|}~=\n"]
].should be_computed_by(:pack, "M")
end
it "encodes an '=' character in hex format" do
["="].pack("M").should == "=3D=\n"
end
it "encodes an embedded space directly" do
["a b"].pack("M").should == "a b=\n"
end
it "encodes a space at the end of the string directly" do
["a "].pack("M").should == "a =\n"
end
it "encodes an embedded tab directly" do
["a\tb"].pack("M").should == "a\tb=\n"
end
it "encodes a tab at the end of the string directly" do
["a\t"].pack("M").should == "a\t=\n"
end
it "encodes an embedded newline directly" do
["a\nb"].pack("M").should == "a\nb=\n"
end
it "encodes 0..31 except tab and newline in hex format" do
[ [["\x00\x01\x02\x03\x04\x05\x06"], "=00=01=02=03=04=05=06=\n"],
[["\a\b\v\f\r"], "=07=08=0B=0C=0D=\n"],
[["\x0e\x0f\x10\x11\x12\x13\x14"], "=0E=0F=10=11=12=13=14=\n"],
[["\x15\x16\x17\x18\x19\x1a"], "=15=16=17=18=19=1A=\n"],
[["\e"], "=1B=\n"],
[["\x1c\x1d\x1e\x1f"], "=1C=1D=1E=1F=\n"]
].should be_computed_by(:pack, "M")
end
it "encodes a tab at the end of a line with an encoded newline" do
["\t"].pack("M").should == "\t=\n"
["\t\n"].pack("M").should == "\t=\n\n"
["abc\t\nxyz"].pack("M").should == "abc\t=\n\nxyz=\n"
end
it "encodes a space at the end of a line with an encoded newline" do
[" "].pack("M").should == " =\n"
[" \n"].pack("M").should == " =\n\n"
["abc \nxyz"].pack("M").should == "abc =\n\nxyz=\n"
end
it "encodes 127..255 in hex format" do
[ [["\x7f\x80\x81\x82\x83\x84\x85\x86"], "=7F=80=81=82=83=84=85=86=\n"],
[["\x87\x88\x89\x8a\x8b\x8c\x8d\x8e"], "=87=88=89=8A=8B=8C=8D=8E=\n"],
[["\x8f\x90\x91\x92\x93\x94\x95\x96"], "=8F=90=91=92=93=94=95=96=\n"],
[["\x97\x98\x99\x9a\x9b\x9c\x9d\x9e"], "=97=98=99=9A=9B=9C=9D=9E=\n"],
[["\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6"], "=9F=A0=A1=A2=A3=A4=A5=A6=\n"],
[["\xa7\xa8\xa9\xaa\xab\xac\xad\xae"], "=A7=A8=A9=AA=AB=AC=AD=AE=\n"],
[["\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6"], "=AF=B0=B1=B2=B3=B4=B5=B6=\n"],
[["\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe"], "=B7=B8=B9=BA=BB=BC=BD=BE=\n"],
[["\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6"], "=BF=C0=C1=C2=C3=C4=C5=C6=\n"],
[["\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce"], "=C7=C8=C9=CA=CB=CC=CD=CE=\n"],
[["\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6"], "=CF=D0=D1=D2=D3=D4=D5=D6=\n"],
[["\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde"], "=D7=D8=D9=DA=DB=DC=DD=DE=\n"],
[["\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6"], "=DF=E0=E1=E2=E3=E4=E5=E6=\n"],
[["\xe7\xe8\xe9\xea\xeb\xec\xed\xee"], "=E7=E8=E9=EA=EB=EC=ED=EE=\n"],
[["\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6"], "=EF=F0=F1=F2=F3=F4=F5=F6=\n"],
[["\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe"], "=F7=F8=F9=FA=FB=FC=FD=FE=\n"],
[["\xff"], "=FF=\n"]
].should be_computed_by(:pack, "M")
end
it "emits a soft line break when the output exceeds 72 characters when passed '*', 0, 1, or no count modifier" do
s1 = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
r1 = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa=\na=\n"
s2 = "\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19\x19"
r2 = "=19=19=19=19=19=19=19=19=19=19=19=19=19=19=19=19=19=19=19=19=19=19=19=19=19=\n=19=\n"
s3 = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x15a"
r3 = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa=15=\na=\n"
s4 = "\x15aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x15a"
r4 = "=15aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa=\na=15a=\n"
[ [[s1], "M", r1],
[[s1], "M0", r1],
[[s1], "M1", r1],
[[s2], "M", r2],
[[s2], "M0", r2],
[[s2], "M1", r2],
[[s3], "M", r3],
[[s3], "M0", r3],
[[s3], "M1", r3],
[[s4], "M", r4],
[[s4], "M0", r4],
[[s4], "M1", r4]
].should be_computed_by(:pack)
end
it "emits a soft line break when the output exceeds count characters" do
[ [["abcdefghi"], "M2", "abc=\ndef=\nghi=\n"],
[["abcdefghi"], "M3", "abcd=\nefgh=\ni=\n"],
[["abcdefghi"], "M4", "abcde=\nfghi=\n"],
[["abcdefghi"], "M5", "abcdef=\nghi=\n"],
[["abcdefghi"], "M6", "abcdefg=\nhi=\n"],
[["\x19\x19\x19\x19"], "M2", "=19=\n=19=\n=19=\n=19=\n"],
[["\x19\x19\x19\x19"], "M3", "=19=19=\n=19=19=\n"],
[["\x19\x19\x19\x19"], "M4", "=19=19=\n=19=19=\n"],
[["\x19\x19\x19\x19"], "M5", "=19=19=\n=19=19=\n"],
[["\x19\x19\x19\x19"], "M6", "=19=19=19=\n=19=\n"],
[["\x19\x19\x19\x19"], "M7", "=19=19=19=\n=19=\n"]
].should be_computed_by(:pack)
end
it "encodes a recursive array" do
empty = ArraySpecs.empty_recursive_array
empty.pack('M').should be_an_instance_of(String)
array = ArraySpecs.recursive_array
array.pack('M').should == "1=\n"
end
it "calls #to_s to convert an object to a String" do
obj = mock("pack M string")
obj.should_receive(:to_s).and_return("packing")
[obj].pack("M").should == "packing=\n"
end
it "converts the object to a String representation if #to_s does not return a String" do
obj = mock("pack M non-string")
obj.should_receive(:to_s).and_return(2)
[obj].pack("M").should be_an_instance_of(String)
end
it "encodes a Symbol as a String" do
[:symbol].pack("M").should == "symbol=\n"
end
it "encodes an Integer as a String" do
[ [[1], "1=\n"],
[[bignum_value], "#{bignum_value}=\n"]
].should be_computed_by(:pack, "M")
end
it "encodes a Float as a String" do
[1.0].pack("M").should == "1.0=\n"
end
it "converts Floats to the minimum unique representation" do
[1.0 / 3.0].pack("M").should == "0.3333333333333333=\n"
end
it "sets the output string to US-ASCII encoding" do
["abcd"].pack("M").encoding.should == Encoding::US_ASCII
end
end
describe "Array#pack with format 'm'" do
it_behaves_like :array_pack_basic, 'm'
it_behaves_like :array_pack_basic_non_float, 'm'
it_behaves_like :array_pack_arguments, 'm'
it_behaves_like :array_pack_taint, 'm'
it "encodes an empty string as an empty string" do
[""].pack("m").should == ""
end
it "appends a newline to the end of the encoded string" do
["a"].pack("m").should == "YQ==\n"
end
it "encodes one element per directive" do
["abc", "DEF"].pack("mm").should == "YWJj\nREVG\n"
end
it "encodes 1, 2, or 3 characters in 4 output characters (Base64 encoding)" do
[ [["a"], "YQ==\n"],
[["ab"], "YWI=\n"],
[["abc"], "YWJj\n"],
[["abcd"], "YWJjZA==\n"],
[["abcde"], "YWJjZGU=\n"],
[["abcdef"], "YWJjZGVm\n"],
[["abcdefg"], "YWJjZGVmZw==\n"],
].should be_computed_by(:pack, "m")
end
it "emits a newline after complete groups of count / 3 input characters when passed a count modifier" do
["abcdefg"].pack("m3").should == "YWJj\nZGVm\nZw==\n"
end
it "implicitly has a count of 45 when passed '*', 1, 2 or no count modifier" do
s = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
r = "YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh\nYWFhYWE=\n"
[ [[s], "m", r],
[[s], "m*", r],
[[s], "m1", r],
[[s], "m2", r],
].should be_computed_by(:pack)
end
it "encodes all ascii characters" do
[ [["\x00\x01\x02\x03\x04\x05\x06"], "AAECAwQFBg==\n"],
[["\a\b\t\n\v\f\r"], "BwgJCgsMDQ==\n"],
[["\x0E\x0F\x10\x11\x12\x13\x14\x15\x16"], "Dg8QERITFBUW\n"],
[["\x17\x18\x19\x1a\e\x1c\x1d\x1e\x1f"], "FxgZGhscHR4f\n"],
[["!\"\#$%&'()*+,-./"], "ISIjJCUmJygpKissLS4v\n"],
[["0123456789"], "MDEyMzQ1Njc4OQ==\n"],
[[":;<=>?@"], "Ojs8PT4/QA==\n"],
[["ABCDEFGHIJKLMNOPQRSTUVWXYZ"], "QUJDREVGR0hJSktMTU5PUFFSU1RVVldYWVo=\n"],
[["[\\]^_`"], "W1xdXl9g\n"],
[["abcdefghijklmnopqrstuvwxyz"], "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXo=\n"],
[["{|}~"], "e3x9fg==\n"],
[["\x7f\xc2\x80\xc2\x81\xc2\x82\xc2\x83"], "f8KAwoHCgsKD\n"],
[["\xc2\x84\xc2\x85\xc2\x86\xc2\x87\xc2"], "woTChcKGwofC\n"],
[["\x88\xc2\x89\xc2\x8a\xc2\x8b\xc2\x8c"], "iMKJworCi8KM\n"],
[["\xc2\x8d\xc2\x8e\xc2\x8f\xc2\x90\xc2"], "wo3CjsKPwpDC\n"],
[["\x91\xc2\x92\xc2\x93\xc2\x94\xc2\x95"], "kcKSwpPClMKV\n"],
[["\xc2\x96\xc2\x97\xc2\x98\xc2\x99\xc2"], "wpbCl8KYwpnC\n"],
[["\x9a\xc2\x9b\xc2\x9c\xc2\x9d\xc2\x9e"], "msKbwpzCncKe\n"],
[["\xc2\x9f\xc2\xa0\xc2\xa1\xc2\xa2\xc2"], "wp/CoMKhwqLC\n"],
[["\xa3\xc2\xa4\xc2\xa5\xc2\xa6\xc2\xa7"], "o8KkwqXCpsKn\n"],
[["\xc2\xa8\xc2\xa9\xc2\xaa\xc2\xab\xc2"], "wqjCqcKqwqvC\n"],
[["\xac\xc2\xad\xc2\xae\xc2\xaf\xc2\xb0"], "rMKtwq7Cr8Kw\n"],
[["\xc2\xb1\xc2\xb2\xc2\xb3\xc2\xb4\xc2"], "wrHCssKzwrTC\n"],
[["\xb5\xc2\xb6\xc2\xb7\xc2\xb8\xc2\xb9"], "tcK2wrfCuMK5\n"],
[["\xc2\xba\xc2\xbb\xc2\xbc\xc2\xbd\xc2"], "wrrCu8K8wr3C\n"],
[["\xbe\xc2\xbf\xc3\x80\xc3\x81\xc3\x82"], "vsK/w4DDgcOC\n"],
[["\xc3\x83\xc3\x84\xc3\x85\xc3\x86\xc3"], "w4PDhMOFw4bD\n"],
[["\x87\xc3\x88\xc3\x89\xc3\x8a\xc3\x8b"], "h8OIw4nDisOL\n"],
[["\xc3\x8c\xc3\x8d\xc3\x8e\xc3\x8f\xc3"], "w4zDjcOOw4/D\n"],
[["\x90\xc3\x91\xc3\x92\xc3\x93\xc3\x94"], "kMORw5LDk8OU\n"],
[["\xc3\x95\xc3\x96\xc3\x97\xc3\x98\xc3"], "w5XDlsOXw5jD\n"],
[["\x99\xc3\x9a\xc3\x9b\xc3\x9c\xc3\x9d"], "mcOaw5vDnMOd\n"],
[["\xc3\x9e\xc3\x9f\xc3\xa0\xc3\xa1\xc3"], "w57Dn8Ogw6HD\n"],
[["\xa2\xc3\xa3\xc3\xa4\xc3\xa5\xc3\xa6"], "osOjw6TDpcOm\n"],
[["\xc3\xa7\xc3\xa8\xc3\xa9\xc3\xaa\xc3"], "w6fDqMOpw6rD\n"],
[["\xab\xc3\xac\xc3\xad\xc3\xae\xc3\xaf"], "q8Osw63DrsOv\n"],
[["\xc3\xb0\xc3\xb1\xc3\xb2\xc3\xb3\xc3"], "w7DDscOyw7PD\n"],
[["\xb4\xc3\xb5\xc3\xb6\xc3\xb7\xc3\xb8"], "tMO1w7bDt8O4\n"],
[["\xc3\xb9\xc3\xba\xc3\xbb\xc3\xbc\xc3"], "w7nDusO7w7zD\n"],
[["\xbd\xc3\xbe\xc3\xbf"], "vcO+w78=\n"]
].should be_computed_by(:pack, "m")
end
it "calls #to_str to convert an object to a String" do
obj = mock("pack m string")
obj.should_receive(:to_str).and_return("abc")
[obj].pack("m").should == "YWJj\n"
end
it "raises a TypeError if #to_str does not return a String" do
obj = mock("pack m non-string")
-> { [obj].pack("m") }.should raise_error(TypeError)
end
it "raises a TypeError if passed nil" do
-> { [nil].pack("m") }.should raise_error(TypeError)
end
it "raises a TypeError if passed an Integer" do
-> { [0].pack("m") }.should raise_error(TypeError)
-> { [bignum_value].pack("m") }.should raise_error(TypeError)
end
it "does not emit a newline if passed zero as the count modifier" do
s = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
r = "YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE="
[s].pack("m0").should == r
end
it "sets the output string to US-ASCII encoding" do
["abcd"].pack("m").encoding.should == Encoding::US_ASCII
end
end
|