1 | # pack & unpack 'm' (base64)
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2 | assert('[""].pack("m")') do
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3 | ary = ""
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4 | str = ""
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5 | [ary].pack("m") == str and
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6 | str.unpack("m") == [ary]
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7 | end
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8 |
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9 | assert('["\0"].pack("m")') do
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10 | ary = "\0"
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11 | str = "AA==\n"
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12 | [ary].pack("m") == str and
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13 | str.unpack("m") == [ary]
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14 | end
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15 |
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16 | assert('["\0\0"].pack("m")') do
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17 | ary = "\0\0"
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18 | str = "AAA=\n"
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19 | [ary].pack("m") == str and
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20 | str.unpack("m") == [ary]
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21 | end
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22 |
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23 | assert('["\0\0\0"].pack("m")') do
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24 | ary = "\0\0\0"
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25 | str = "AAAA\n"
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26 | [ary].pack("m") == str and
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27 | str.unpack("m") == [ary]
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28 | end
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29 |
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30 | assert('["abc..xyzABC..XYZ"].pack("m")') do
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31 | ["abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"].pack("m") == "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNERUZHSElKS0xNTk9QUVJT\nVFVWV1hZWg==\n"
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32 | end
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33 |
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34 | assert('"YWJ...".unpack("m") should "abc..xyzABC..XYZ"') do
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35 | str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
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36 | "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNERUZHSElKS0xNTk9QUVJT\nVFVWV1hZWg==\n".unpack("m") == [str] and
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37 | "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWg==\n".unpack("m") == [str]
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38 | end
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39 |
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40 | # pack & unpack 'H'
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41 | assert('["3031"].pack("H*")') do
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42 | ary = "3031"
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43 | str = "01"
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44 | [ary].pack("H*") == str and
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45 | str.unpack("H*") == [ary]
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46 | end
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47 |
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48 | assert('["10"].pack("H*")') do
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49 | ary = "10"
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50 | str = "\020"
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51 | [ary].pack("H*") == str and
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52 | str.unpack("H*") == [ary]
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53 | end
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54 |
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55 | assert('[0,1,127,128,255].pack("C*")') do
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56 | ary = [ 0, 1, 127, 128, 255 ]
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57 | str = "\x00\x01\x7F\x80\xFF"
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58 | ary.pack("C*") == str and str.unpack("C*") == ary
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59 | end
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60 |
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61 | # pack "a"
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62 | assert('["abc"].pack("a")') do
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63 | ["abc"].pack("a") == "a" and
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64 | ["abc"].pack("a*") == "abc" and
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65 | ["abc"].pack("a4") == "abc\0"
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66 | end
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67 |
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68 | # upack "a"
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69 | assert('["abc"].pack("a")') do
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70 | "abc\0".unpack("a4") == ["abc\0"] and
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71 | "abc ".unpack("a4") == ["abc "]
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72 | end
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73 |
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74 | # pack "A"
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75 | assert('["abc"].pack("A")') do
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76 | ["abc"].pack("A") == "a" and
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77 | ["abc"].pack("A*") == "abc" and
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78 | ["abc"].pack("A4") == "abc "
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79 | end
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80 |
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81 | # upack "A"
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82 | assert('["abc"].pack("A")') do
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83 | "abc\0".unpack("A4") == ["abc"] and
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84 | "abc ".unpack("A4") == ["abc"]
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85 | end
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86 |
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87 | # regression tests
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88 | assert('issue #1') do
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89 | [1, 2].pack("nn") == "\000\001\000\002"
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90 | end
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91 |
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92 | def assert_pack tmpl, packed, unpacked
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93 | assert_equal packed, unpacked.pack(tmpl)
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94 | assert_equal unpacked, packed.unpack(tmpl)
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95 | end
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96 |
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97 | PACK_IS_LITTLE_ENDIAN = "\x01\00".unpack('S')[0] == 0x01
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98 |
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99 | assert 'pack float' do
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100 | assert_pack 'e', "\x00\x00@@", [3.0]
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101 | assert_pack 'g', "@@\x00\x00", [3.0]
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102 |
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103 | if PACK_IS_LITTLE_ENDIAN
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104 | assert_pack 'f', "\x00\x00@@", [3.0]
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105 | assert_pack 'F', "\x00\x00@@", [3.0]
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106 | else
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107 | assert_pack 'f', "@@\x00\x00", [3.0]
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108 | assert_pack 'F', "@@\x00\x00", [3.0]
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109 | end
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110 | end
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111 |
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112 | assert 'pack double' do
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113 | assert_pack 'E', "\x00\x00\x00\x00\x00\x00\b@", [3.0]
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114 | assert_pack 'G', "@\b\x00\x00\x00\x00\x00\x00", [3.0]
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115 |
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116 | if PACK_IS_LITTLE_ENDIAN
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117 | assert_pack 'd', "\x00\x00\x00\x00\x00\x00\b@", [3.0]
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118 | assert_pack 'D', "\x00\x00\x00\x00\x00\x00\b@", [3.0]
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119 | else
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120 | assert_pack 'd', "@\b\x00\x00\x00\x00\x00\x00", [3.0]
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121 | assert_pack 'D', "@\b\x00\x00\x00\x00\x00\x00", [3.0]
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122 | end
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123 | end
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124 |
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125 | assert 'pack/unpack "i"' do
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126 | int_size = [0].pack('i').size
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127 | raise "pack('i').size is too small (#{int_size})" if int_size < 2
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128 |
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129 | if PACK_IS_LITTLE_ENDIAN
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130 | str = "\xC7\xCF" + "\xFF" * (int_size-2)
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131 | else
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132 | str = "\xFF" * (int_size-2) + "\xC7\xCF"
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133 | end
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134 | assert_pack 'i', str, [-12345]
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135 | end
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136 |
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137 | assert 'pack/unpack "I"' do
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138 | uint_size = [0].pack('I').size
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139 | raise "pack('I').size is too small (#{uint_size})" if uint_size < 2
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140 |
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141 | if PACK_IS_LITTLE_ENDIAN
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142 | str = "\x39\x30" + "\0" * (uint_size-2)
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143 | else
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144 | str = "\0" * (uint_size-2) + "\x39\x30"
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145 | end
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146 | assert_pack 'I', str, [12345]
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147 | end
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