1 PACK_IS_LITTLE_ENDIAN = "\x01\00".unpack('S')[0] == 0x01
3 def assert_pack tmpl, packed, unpacked
5 assert "assert_pack" do
6 assert_equal packed, unpacked.pack(tmpl), "#{unpacked.inspect}.pack(#{t})"
7 assert_equal unpacked, packed.unpack(tmpl), "#{packed.inspect}.unpack(#{t})"
11 # pack & unpack 'm' (base64)
12 assert('[""].pack("m")') do
13 assert_pack "m", "", [""]
16 assert('["\0"].pack("m")') do
17 assert_pack "m", "AA==\n", ["\0"]
20 assert('["\0\0"].pack("m")') do
21 assert_pack "m", "AAA=\n", ["\0\0"]
24 assert('["\0\0\0"].pack("m")') do
25 assert_pack "m", "AAAA\n", ["\0\0\0"]
28 assert('["abc..xyzABC..XYZ"].pack("m")') do
29 assert_pack "m", "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNERUZHSElKS0xNTk9QUVJT\nVFVWV1hZWg==\n", ["abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"]
32 assert('"YWJ...".unpack("m") should "abc..xyzABC..XYZ"') do
33 ary = ["abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"]
34 assert_equal ary, "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNERUZHSElKS0xNTk9QUVJT\nVFVWV1hZWg==\n".unpack("m")
35 assert_equal ary, "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWg==\n".unpack("m")
38 assert('["A", "B"].pack') do
39 assert_equal "QQ==\n", ["A", "B"].pack("m50")
40 assert_equal ["A"], "QQ==\n".unpack("m50")
41 assert_equal "QQ==Qg==", ["A", "B"].pack("m0 m0")
42 assert_equal ["A", "B"], "QQ==Qg==".unpack("m10 m10")
45 assert('["abc..xyzABC..XYZ"].pack("m0")') do
46 assert_pack "m0", "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWg==", ["abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"]
50 assert('["3031"].pack("H*")') do
51 assert_pack "H*", "01", ["3031"]
54 assert('["10"].pack("H*")') do
55 assert_pack "H*", "\020", ["10"]
58 assert('[0,1,127,128,255].pack("C*")') do
59 assert_pack "C*", "\x00\x01\x7F\x80\xFF", [0, 1, 127, 128, 255]
63 assert('["abc"].pack("a")') do
64 assert_equal "a", ["abc"].pack("a")
65 assert_equal "abc", ["abc"].pack("a*")
66 assert_equal "abc\0", ["abc"].pack("a4")
70 assert('["abc"].pack("a")') do
71 assert_equal ["abc\0"], "abc\0".unpack("a4")
72 assert_equal ["abc "], "abc ".unpack("a4")
76 assert('["abc"].pack("A")') do
77 assert_equal "a", ["abc"].pack("A")
78 assert_equal "abc", ["abc"].pack("A*")
79 assert_equal "abc ", ["abc"].pack("A4")
83 assert('["abc"].pack("A")') do
84 assert_equal ["abc"], "abc\0".unpack("A4")
85 assert_equal ["abc"], "abc ".unpack("A4")
90 assert_equal "\000\001\000\002", [1, 2].pack("nn")
93 assert 'pack float' do
94 assert_pack 'e', "\x00\x00@@", [3.0]
95 assert_pack 'g', "@@\x00\x00", [3.0]
97 if PACK_IS_LITTLE_ENDIAN
98 assert_pack 'f', "\x00\x00@@", [3.0]
99 assert_pack 'F', "\x00\x00@@", [3.0]
101 assert_pack 'f', "@@\x00\x00", [3.0]
102 assert_pack 'F', "@@\x00\x00", [3.0]
106 assert 'pack double' do
107 assert_pack 'E', "\x00\x00\x00\x00\x00\x00\b@", [3.0]
108 assert_pack 'G', "@\b\x00\x00\x00\x00\x00\x00", [3.0]
110 if PACK_IS_LITTLE_ENDIAN
111 assert_pack 'd', "\x00\x00\x00\x00\x00\x00\b@", [3.0]
112 assert_pack 'D', "\x00\x00\x00\x00\x00\x00\b@", [3.0]
114 assert_pack 'd', "@\b\x00\x00\x00\x00\x00\x00", [3.0]
115 assert_pack 'D', "@\b\x00\x00\x00\x00\x00\x00", [3.0]
119 assert 'pack/unpack "i"' do
120 int_size = [0].pack('i').size
121 raise "pack('i').size is too small (#{int_size})" if int_size < 2
123 if PACK_IS_LITTLE_ENDIAN
124 str = "\xC7\xCF" + "\xFF" * (int_size-2)
126 str = "\xFF" * (int_size-2) + "\xCF\xC7"
128 assert_pack 'i', str, [-12345]
131 assert 'pack/unpack "I"' do
132 uint_size = [0].pack('I').size
133 raise "pack('I').size is too small (#{uint_size})" if uint_size < 2
135 if PACK_IS_LITTLE_ENDIAN
136 str = "\x39\x30" + "\0" * (uint_size-2)
138 str = "\0" * (uint_size-2) + "\x30\x39"
140 assert_pack 'I', str, [12345]
143 assert 'pack/unpack "U"' do
144 assert_equal [], "".unpack("U")
145 assert_equal [], "".unpack("U*")
146 assert_equal [65, 66], "ABC".unpack("U2")
147 assert_equal [12371, 12435, 12395, 12385, 12399, 19990, 30028], "こんにちは世界".unpack("U*")
149 assert_equal "", [].pack("U")
150 assert_equal "", [].pack("U*")
151 assert_equal "AB", [65, 66, 67].pack("U2")
152 assert_equal "こんにちは世界", [12371, 12435, 12395, 12385, 12399, 19990, 30028].pack("U*")
154 assert_equal "\000", [0].pack("U")
156 assert_raise(RangeError) { [-0x40000000].pack("U") }
157 assert_raise(RangeError) { [-1].pack("U") }
158 assert_raise(RangeError) { [0x40000000].pack("U") }