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/test/ruby/test_pack.rb

http://github.com/ruby/ruby
Ruby | 872 lines | 767 code | 96 blank | 9 comment | 18 complexity | 28e6f4e34273f0f994a6cfe8748382bc MD5 | raw file
Possible License(s): GPL-2.0, BSD-3-Clause, AGPL-3.0 
    

  1. # coding: US-ASCII
    2. 

  2. # frozen_string_literal: false
    3. 

  3. require 'test/unit'
    4. 

  4. 

  5. class TestPack < Test::Unit::TestCase
    6. 

  6.   def test_pack
    7. 

  7.     $format = "c2x5CCxsdils_l_a6";
    8. 

  8.     # Need the expression in here to force ary[5] to be numeric.  This avoids
    9. 

  9.     # test2 failing because ary2 goes str->numeric->str and ary does not.
    10. 

  10.     ary = [1,-100,127,128,32767,987.654321098 / 100.0,12345,123456,-32767,-123456,"abcdef"]
    11. 

  11.     $x = ary.pack($format)
    12. 

  12.     ary2 = $x.unpack($format)
    13. 

  13. 

  14.     assert_equal(ary.length, ary2.length)
    15. 

  15.     assert_equal(ary.join(':'), ary2.join(':'))
    16. 

  16.     assert_match(/def/, $x)
    17. 

  17. 

  18.     $x = [-1073741825]
    19. 

  19.     assert_equal($x, $x.pack("q").unpack("q"))
    20. 

  20. 

  21.     $x = [-1]
    22. 

  22.     assert_equal($x, $x.pack("l").unpack("l"))
    23. 

  23.   end
    24. 

  24. 

  25.   def test_pack_n
    26. 

  26.     assert_equal "\000\000", [0].pack('n')
    27. 

  27.     assert_equal "\000\001", [1].pack('n')
    28. 

  28.     assert_equal "\000\002", [2].pack('n')
    29. 

  29.     assert_equal "\000\003", [3].pack('n')
    30. 

  30.     assert_equal "\377\376", [65534].pack('n')
    31. 

  31.     assert_equal "\377\377", [65535].pack('n')
    32. 

  32. 

  33.     assert_equal "\200\000", [2**15].pack('n')
    34. 

  34.     assert_equal "\177\377", [-2**15-1].pack('n')
    35. 

  35.     assert_equal "\377\377", [-1].pack('n')
    36. 

  36. 

  37.     assert_equal "\000\001\000\001", [1,1].pack('n*')
    38. 

  38.     assert_equal "\000\001\000\001\000\001", [1,1,1].pack('n*')
    39. 

  39.   end
    40. 

  40. 

  41.   def test_unpack_n
    42. 

  42.     assert_equal 1, "\000\001".unpack('n')[0]
    43. 

  43.     assert_equal 2, "\000\002".unpack('n')[0]
    44. 

  44.     assert_equal 3, "\000\003".unpack('n')[0]
    45. 

  45.     assert_equal 65535, "\377\377".unpack('n')[0]
    46. 

  46.     assert_equal [1,1], "\000\001\000\001".unpack('n*')
    47. 

  47.     assert_equal [1,1,1], "\000\001\000\001\000\001".unpack('n*')
    48. 

  48.   end
    49. 

  49. 

  50.   def test_pack_N
    51. 

  51.     assert_equal "\000\000\000\000", [0].pack('N')
    52. 

  52.     assert_equal "\000\000\000\001", [1].pack('N')
    53. 

  53.     assert_equal "\000\000\000\002", [2].pack('N')
    54. 

  54.     assert_equal "\000\000\000\003", [3].pack('N')
    55. 

  55.     assert_equal "\377\377\377\376", [4294967294].pack('N')
    56. 

  56.     assert_equal "\377\377\377\377", [4294967295].pack('N')
    57. 

  57. 

  58.     assert_equal "\200\000\000\000", [2**31].pack('N')
    59. 

  59.     assert_equal "\177\377\377\377", [-2**31-1].pack('N')
    60. 

  60.     assert_equal "\377\377\377\377", [-1].pack('N')
    61. 

  61. 

  62.     assert_equal "\000\000\000\001\000\000\000\001", [1,1].pack('N*')
    63. 

  63.     assert_equal "\000\000\000\001\000\000\000\001\000\000\000\001", [1,1,1].pack('N*')
    64. 

  64.   end
    65. 

  65. 

  66.   def test_unpack_N
    67. 

  67.     assert_equal 1, "\000\000\000\001".unpack('N')[0]
    68. 

  68.     assert_equal 2, "\000\000\000\002".unpack('N')[0]
    69. 

  69.     assert_equal 3, "\000\000\000\003".unpack('N')[0]
    70. 

  70.     assert_equal 4294967295, "\377\377\377\377".unpack('N')[0]
    71. 

  71.     assert_equal [1,1], "\000\000\000\001\000\000\000\001".unpack('N*')
    72. 

  72.     assert_equal [1,1,1], "\000\000\000\001\000\000\000\001\000\000\000\001".unpack('N*')
    73. 

  73.   end
    74. 

  74. 

  75.   def _integer_big_endian(mod='')
    76. 

  76.     assert_equal("\x01\x02", [0x0102].pack("s"+mod))
    77. 

  77.     assert_equal("\x01\x02", [0x0102].pack("S"+mod))
    78. 

  78.     assert_equal("\x01\x02\x03\x04", [0x01020304].pack("l"+mod))
    79. 

  79.     assert_equal("\x01\x02\x03\x04", [0x01020304].pack("L"+mod))
    80. 

  80.     assert_equal("\x01\x02\x03\x04\x05\x06\x07\x08", [0x0102030405060708].pack("q"+mod))
    81. 

  81.     assert_equal("\x01\x02\x03\x04\x05\x06\x07\x08", [0x0102030405060708].pack("Q"+mod))
    82. 

  82.     psize = [nil].pack('p').bytesize
    83. 

  83.     if psize == 4
    84. 

  84.       assert_equal("\x01\x02\x03\x04", [0x01020304].pack("j"+mod))
    85. 

  85.       assert_equal("\x01\x02\x03\x04", [0x01020304].pack("J"+mod))
    86. 

  86.     elsif psize == 8
    87. 

  87.       assert_equal("\x01\x02\x03\x04\x05\x06\x07\x08", [0x0102030405060708].pack("j"+mod))
    88. 

  88.       assert_equal("\x01\x02\x03\x04\x05\x06\x07\x08", [0x0102030405060708].pack("J"+mod))
    89. 

  89.     end
    90. 

  90.     assert_match(/\A\x00*\x01\x02\z/, [0x0102].pack("s!"+mod))
    91. 

  91.     assert_match(/\A\x00*\x01\x02\z/, [0x0102].pack("S!"+mod))
    92. 

  92.     assert_match(/\A\x00*\x01\x02\x03\x04\z/, [0x01020304].pack("i"+mod))
    93. 

  93.     assert_match(/\A\x00*\x01\x02\x03\x04\z/, [0x01020304].pack("I"+mod))
    94. 

  94.     assert_match(/\A\x00*\x01\x02\x03\x04\z/, [0x01020304].pack("i!"+mod))
    95. 

  95.     assert_match(/\A\x00*\x01\x02\x03\x04\z/, [0x01020304].pack("I!"+mod))
    96. 

  96.     assert_match(/\A\x00*\x01\x02\x03\x04\z/, [0x01020304].pack("l!"+mod))
    97. 

  97.     assert_match(/\A\x00*\x01\x02\x03\x04\z/, [0x01020304].pack("L!"+mod))
    98. 

  98.     if psize == 4
    99. 

  99.       assert_match(/\A\x00*\x01\x02\x03\x04\z/, [0x01020304].pack("j!"+mod))
    100. 

  100.       assert_match(/\A\x00*\x01\x02\x03\x04\z/, [0x01020304].pack("J!"+mod))
    101. 

  101.     elsif psize == 8
    102. 

  102.       assert_match(/\A\x00*\x01\x02\x03\x04\x05\x06\x07\x08\z/, [0x0102030405060708].pack("j!"+mod))
    103. 

  103.       assert_match(/\A\x00*\x01\x02\x03\x04\x05\x06\x07\x08\z/, [0x0102030405060708].pack("J!"+mod))
    104. 

  104.     end
    105. 

  105.     %w[s S l L q Q j J s! S! i I i! I! l! L! j! J!].each {|fmt|
    106. 

  106.       fmt += mod
    107. 

  107.       nuls = [0].pack(fmt)
    108. 

  108.       v = 0
    109. 

  109.       s = "".force_encoding("ascii-8bit")
    110. 

  110.       nuls.bytesize.times {|i|
    111. 

  111.         j = i + 40
    112. 

  112.         v = v * 256 + j
    113. 

  113.         s << [j].pack("C")
    114. 

  114.       }
    115. 

  115.       assert_equal(s, [v].pack(fmt), "[#{v}].pack(#{fmt.dump})")
    116. 

  116.       assert_equal([v], s.unpack(fmt), "#{s.dump}.unpack(#{fmt.dump})")
    117. 

  117.       s2 = s+s
    118. 

  118.       fmt2 = fmt+"*"
    119. 

  119.       assert_equal([v,v], s2.unpack(fmt2), "#{s2.dump}.unpack(#{fmt2.dump})")
    120. 

  120.     }
    121. 

  121.   end
    122. 

  122. 

  123.   def _integer_little_endian(mod='')
    124. 

  124.     assert_equal("\x02\x01", [0x0102].pack("s"+mod))
    125. 

  125.     assert_equal("\x02\x01", [0x0102].pack("S"+mod))
    126. 

  126.     assert_equal("\x04\x03\x02\x01", [0x01020304].pack("l"+mod))
    127. 

  127.     assert_equal("\x04\x03\x02\x01", [0x01020304].pack("L"+mod))
    128. 

  128.     assert_equal("\x08\x07\x06\x05\x04\x03\x02\x01", [0x0102030405060708].pack("q"+mod))
    129. 

  129.     assert_equal("\x08\x07\x06\x05\x04\x03\x02\x01", [0x0102030405060708].pack("Q"+mod))
    130. 

  130.     psize = [nil].pack('p').bytesize
    131. 

  131.     if psize == 4
    132. 

  132.       assert_equal("\x04\x03\x02\x01", [0x01020304].pack("j"+mod))
    133. 

  133.       assert_equal("\x04\x03\x02\x01", [0x01020304].pack("J"+mod))
    134. 

  134.     elsif psize == 8
    135. 

  135.       assert_equal("\x08\x07\x06\x05\x04\x03\x02\x01", [0x0102030405060708].pack("j"+mod))
    136. 

  136.       assert_equal("\x08\x07\x06\x05\x04\x03\x02\x01", [0x0102030405060708].pack("J"+mod))
    137. 

  137.     end
    138. 

  138.     assert_match(/\A\x02\x01\x00*\z/, [0x0102].pack("s!"+mod))
    139. 

  139.     assert_match(/\A\x02\x01\x00*\z/, [0x0102].pack("S!"+mod))
    140. 

  140.     assert_match(/\A\x04\x03\x02\x01\x00*\z/, [0x01020304].pack("i"+mod))
    141. 

  141.     assert_match(/\A\x04\x03\x02\x01\x00*\z/, [0x01020304].pack("I"+mod))
    142. 

  142.     assert_match(/\A\x04\x03\x02\x01\x00*\z/, [0x01020304].pack("i!"+mod))
    143. 

  143.     assert_match(/\A\x04\x03\x02\x01\x00*\z/, [0x01020304].pack("I!"+mod))
    144. 

  144.     assert_match(/\A\x04\x03\x02\x01\x00*\z/, [0x01020304].pack("l!"+mod))
    145. 

  145.     assert_match(/\A\x04\x03\x02\x01\x00*\z/, [0x01020304].pack("L!"+mod))
    146. 

  146.     if psize == 4
    147. 

  147.       assert_match(/\A\x04\x03\x02\x01\x00*\z/, [0x01020304].pack("j!"+mod))
    148. 

  148.       assert_match(/\A\x04\x03\x02\x01\x00*\z/, [0x01020304].pack("J!"+mod))
    149. 

  149.     elsif psize == 8
    150. 

  150.       assert_match(/\A\x08\x07\x06\x05\x04\x03\x02\x01\x00*\z/, [0x0102030405060708].pack("j!"+mod))
    151. 

  151.       assert_match(/\A\x08\x07\x06\x05\x04\x03\x02\x01\x00*\z/, [0x0102030405060708].pack("J!"+mod))
    152. 

  152.     end
    153. 

  153.     %w[s S l L q Q j J s! S! i I i! I! l! L! j! J!].each {|fmt|
    154. 

  154.       fmt += mod
    155. 

  155.       nuls = [0].pack(fmt)
    156. 

  156.       v = 0
    157. 

  157.       s = "".force_encoding("ascii-8bit")
    158. 

  158.       nuls.bytesize.times {|i|
    159. 

  159.         j = i+40
    160. 

  160.         v = v * 256 + j
    161. 

  161.         s << [j].pack("C")
    162. 

  162.       }
    163. 

  163.       s.reverse!
    164. 

  164.       assert_equal(s, [v].pack(fmt), "[#{v}].pack(#{fmt.dump})")
    165. 

  165.       assert_equal([v], s.unpack(fmt), "#{s.dump}.unpack(#{fmt.dump})")
    166. 

  166.       s2 = s+s
    167. 

  167.       fmt2 = fmt+"*"
    168. 

  168.       assert_equal([v,v], s2.unpack(fmt2), "#{s2.dump}.unpack(#{fmt2.dump})")
    169. 

  169.     }
    170. 

  170.   end
    171. 

  171. 

  172.   def test_integer_endian
    173. 

  173.     s = [1].pack("s")
    174. 

  174.     assert_include(["\0\1", "\1\0"], s)
    175. 

  175.     if s == "\0\1"
    176. 

  176.       _integer_big_endian()
    177. 

  177.     else
    178. 

  178.       _integer_little_endian()
    179. 

  179.     end
    180. 

  180.     assert_equal("\x01\x02\x02\x01", [0x0102,0x0102].pack("s>s<"))
    181. 

  181.     assert_equal([0x0102,0x0102], "\x01\x02\x02\x01".unpack("s>s<"))
    182. 

  182.   end
    183. 

  183. 

  184.   def test_integer_endian_explicit
    185. 

  185.       _integer_big_endian('>')
    186. 

  186.       _integer_little_endian('<')
    187. 

  187.   end
    188. 

  188. 

  189.   def test_pack_U
    190. 

  190.     assert_raise(RangeError) { [-0x40000001].pack("U") }
    191. 

  191.     assert_raise(RangeError) { [-0x40000000].pack("U") }
    192. 

  192.     assert_raise(RangeError) { [-1].pack("U") }
    193. 

  193.     assert_equal "\000", [0].pack("U")
    194. 

  194.     assert_equal "\374\277\277\277\277\277".force_encoding(Encoding::UTF_8), [0x3fffffff].pack("U")
    195. 

  195.     assert_equal "\375\200\200\200\200\200".force_encoding(Encoding::UTF_8), [0x40000000].pack("U")
    196. 

  196.     assert_equal "\375\277\277\277\277\277".force_encoding(Encoding::UTF_8), [0x7fffffff].pack("U")
    197. 

  197.     assert_raise(RangeError) { [0x80000000].pack("U") }
    198. 

  198.     assert_raise(RangeError) { [0x100000000].pack("U") }
    199. 

  199.   end
    200. 

  200. 

  201.   def test_pack_P
    202. 

  202.     a = ["abc"]
    203. 

  203.     assert_equal a, a.pack("P").unpack("P*")
    204. 

  204.     assert_equal "a", a.pack("P").unpack("P")[0]
    205. 

  205.     assert_equal a, a.pack("P").freeze.unpack("P*")
    206. 

  206.     assert_raise(ArgumentError) { (a.pack("P") + "").unpack("P*") }
    207. 

  207.   end
    208. 

  208. 

  209.   def test_pack_p
    210. 

  210.     a = ["abc"]
    211. 

  211.     assert_equal a, a.pack("p").unpack("p*")
    212. 

  212.     assert_equal a[0], a.pack("p").unpack("p")[0]
    213. 

  213.     assert_equal a, a.pack("p").freeze.unpack("p*")
    214. 

  214.     assert_raise(ArgumentError) { (a.pack("p") + "").unpack("p*") }
    215. 

  215.     assert_equal a, (a.pack("p") << "d").unpack("p*")
    216. 

  216.   end
    217. 

  217. 

  218.   def test_format_string_modified
    219. 

  219.     fmt = "CC"
    220. 

  220.     o = Object.new
    221. 

  221.     class << o; self; end.class_eval do
    222. 

  222.       define_method(:to_int) { fmt.clear; 0 }
    223. 

  223.     end
    224. 

  224.     assert_raise(RuntimeError) do
    225. 

  225.       [o, o].pack(fmt)
    226. 

  226.     end
    227. 

  227.   end
    228. 

  228. 

  229.   def test_comment
    230. 

  230.     assert_equal("\0\1", [0,1].pack("  C  #foo \n  C  "))
    231. 

  231.     assert_equal([0,1], "\0\1".unpack("  C  #foo \n  C  "))
    232. 

  232.   end
    233. 

  233. 

  234.   def test_illegal_bang
    235. 

  235.     assert_raise(ArgumentError) { [].pack("a!") }
    236. 

  236.     assert_raise(ArgumentError) { "".unpack("a!") }
    237. 

  237.   end
    238. 

  238. 

  239.   def test_pack_unpack_aA
    240. 

  240.     assert_equal("f", ["foo"].pack("A"))
    241. 

  241.     assert_equal("f", ["foo"].pack("a"))
    242. 

  242.     assert_equal("foo", ["foo"].pack("A*"))
    243. 

  243.     assert_equal("foo", ["foo"].pack("a*"))
    244. 

  244.     assert_equal("fo", ["foo"].pack("A2"))
    245. 

  245.     assert_equal("fo", ["foo"].pack("a2"))
    246. 

  246.     assert_equal("foo ", ["foo"].pack("A4"))
    247. 

  247.     assert_equal("foo\0", ["foo"].pack("a4"))
    248. 

  248.     assert_equal(" ", [nil].pack("A"))
    249. 

  249.     assert_equal("\0", [nil].pack("a"))
    250. 

  250.     assert_equal("", [nil].pack("A*"))
    251. 

  251.     assert_equal("", [nil].pack("a*"))
    252. 

  252.     assert_equal("  ", [nil].pack("A2"))
    253. 

  253.     assert_equal("\0\0", [nil].pack("a2"))
    254. 

  254. 

  255.     assert_equal("foo" + "\0" * 27, ["foo"].pack("a30"))
    256. 

  256. 

  257.     assert_equal(["f"], "foo\0".unpack("A"))
    258. 

  258.     assert_equal(["f"], "foo\0".unpack("a"))
    259. 

  259.     assert_equal(["foo"], "foo\0".unpack("A4"))
    260. 

  260.     assert_equal(["foo\0"], "foo\0".unpack("a4"))
    261. 

  261.     assert_equal(["foo"], "foo ".unpack("A4"))
    262. 

  262.     assert_equal(["foo "], "foo ".unpack("a4"))
    263. 

  263.     assert_equal(["foo"], "foo".unpack("A4"))
    264. 

  264.     assert_equal(["foo"], "foo".unpack("a4"))
    265. 

  265.   end
    266. 

  266. 

  267.   def test_pack_unpack_Z
    268. 

  268.     assert_equal("f", ["foo"].pack("Z"))
    269. 

  269.     assert_equal("foo\0", ["foo"].pack("Z*"))
    270. 

  270.     assert_equal("fo", ["foo"].pack("Z2"))
    271. 

  271.     assert_equal("foo\0\0", ["foo"].pack("Z5"))
    272. 

  272.     assert_equal("\0", [nil].pack("Z"))
    273. 

  273.     assert_equal("\0", [nil].pack("Z*"))
    274. 

  274.     assert_equal("\0\0", [nil].pack("Z2"))
    275. 

  275. 

  276.     assert_equal(["f"], "foo\0".unpack("Z"))
    277. 

  277.     assert_equal(["foo"], "foo".unpack("Z*"))
    278. 

  278.     assert_equal(["foo"], "foo\0".unpack("Z*"))
    279. 

  279.     assert_equal(["foo"], "foo".unpack("Z5"))
    280. 

  280.   end
    281. 

  281. 

  282.   def test_pack_unpack_bB
    283. 

  283.     assert_equal("\xff\x00", ["1111111100000000"].pack("b*"))
    284. 

  284.     assert_equal("\x01\x02", ["1000000001000000"].pack("b*"))
    285. 

  285.     assert_equal("", ["1"].pack("b0"))
    286. 

  286.     assert_equal("\x01", ["1"].pack("b1"))
    287. 

  287.     assert_equal("\x01\x00", ["1"].pack("b2"))
    288. 

  288.     assert_equal("\x01\x00", ["1"].pack("b3"))
    289. 

  289.     assert_equal("\x01\x00\x00", ["1"].pack("b4"))
    290. 

  290.     assert_equal("\x01\x00\x00", ["1"].pack("b5"))
    291. 

  291.     assert_equal("\x01\x00\x00\x00", ["1"].pack("b6"))
    292. 

  292. 

  293.     assert_equal("\xff\x00", ["1111111100000000"].pack("B*"))
    294. 

  294.     assert_equal("\x01\x02", ["0000000100000010"].pack("B*"))
    295. 

  295.     assert_equal("", ["1"].pack("B0"))
    296. 

  296.     assert_equal("\x80", ["1"].pack("B1"))
    297. 

  297.     assert_equal("\x80\x00", ["1"].pack("B2"))
    298. 

  298.     assert_equal("\x80\x00", ["1"].pack("B3"))
    299. 

  299.     assert_equal("\x80\x00\x00", ["1"].pack("B4"))
    300. 

  300.     assert_equal("\x80\x00\x00", ["1"].pack("B5"))
    301. 

  301.     assert_equal("\x80\x00\x00\x00", ["1"].pack("B6"))
    302. 

  302. 

  303.     assert_equal(["1111111100000000"], "\xff\x00".unpack("b*"))
    304. 

  304.     assert_equal(["1000000001000000"], "\x01\x02".unpack("b*"))
    305. 

  305.     assert_equal([""], "".unpack("b0"))
    306. 

  306.     assert_equal(["1"], "\x01".unpack("b1"))
    307. 

  307.     assert_equal(["10"], "\x01".unpack("b2"))
    308. 

  308.     assert_equal(["100"], "\x01".unpack("b3"))
    309. 

  309. 

  310.     assert_equal(["1111111100000000"], "\xff\x00".unpack("B*"))
    311. 

  311.     assert_equal(["0000000100000010"], "\x01\x02".unpack("B*"))
    312. 

  312.     assert_equal([""], "".unpack("B0"))
    313. 

  313.     assert_equal(["1"], "\x80".unpack("B1"))
    314. 

  314.     assert_equal(["10"], "\x80".unpack("B2"))
    315. 

  315.     assert_equal(["100"], "\x80".unpack("B3"))
    316. 

  316. 

  317.     assert_equal(Encoding::US_ASCII, "\xff\x00".unpack("b*")[0].encoding)
    318. 

  318.     assert_equal(Encoding::US_ASCII, "\xff\x00".unpack("B*")[0].encoding)
    319. 

  319.   end
    320. 

  320. 

  321.   def test_pack_unpack_hH
    322. 

  322.     assert_equal("\x01\xfe", ["10ef"].pack("h*"))
    323. 

  323.     assert_equal("", ["10ef"].pack("h0"))
    324. 

  324.     assert_equal("\x01\x0e", ["10ef"].pack("h3"))
    325. 

  325.     assert_equal("\x01\xfe\x0", ["10ef"].pack("h5"))
    326. 

  326.     assert_equal("\xff\x0f", ["fff"].pack("h3"))
    327. 

  327.     assert_equal("\xff\x0f", ["fff"].pack("h4"))
    328. 

  328.     assert_equal("\xff\x0f\0", ["fff"].pack("h5"))
    329. 

  329.     assert_equal("\xff\x0f\0", ["fff"].pack("h6"))
    330. 

  330.     assert_equal("\xff\x0f\0\0", ["fff"].pack("h7"))
    331. 

  331.     assert_equal("\xff\x0f\0\0", ["fff"].pack("h8"))
    332. 

  332. 

  333.     assert_equal("\x10\xef", ["10ef"].pack("H*"))
    334. 

  334.     assert_equal("", ["10ef"].pack("H0"))
    335. 

  335.     assert_equal("\x10\xe0", ["10ef"].pack("H3"))
    336. 

  336.     assert_equal("\x10\xef\x0", ["10ef"].pack("H5"))
    337. 

  337.     assert_equal("\xff\xf0", ["fff"].pack("H3"))
    338. 

  338.     assert_equal("\xff\xf0", ["fff"].pack("H4"))
    339. 

  339.     assert_equal("\xff\xf0\0", ["fff"].pack("H5"))
    340. 

  340.     assert_equal("\xff\xf0\0", ["fff"].pack("H6"))
    341. 

  341.     assert_equal("\xff\xf0\0\0", ["fff"].pack("H7"))
    342. 

  342.     assert_equal("\xff\xf0\0\0", ["fff"].pack("H8"))
    343. 

  343. 

  344.     assert_equal(["10ef"], "\x01\xfe".unpack("h*"))
    345. 

  345.     assert_equal([""], "\x01\xfe".unpack("h0"))
    346. 

  346.     assert_equal(["1"], "\x01\xfe".unpack("h1"))
    347. 

  347.     assert_equal(["10"], "\x01\xfe".unpack("h2"))
    348. 

  348.     assert_equal(["10e"], "\x01\xfe".unpack("h3"))
    349. 

  349.     assert_equal(["10ef"], "\x01\xfe".unpack("h4"))
    350. 

  350.     assert_equal(["10ef"], "\x01\xfe".unpack("h5"))
    351. 

  351. 

  352.     assert_equal(["10ef"], "\x10\xef".unpack("H*"))
    353. 

  353.     assert_equal([""], "\x10\xef".unpack("H0"))
    354. 

  354.     assert_equal(["1"], "\x10\xef".unpack("H1"))
    355. 

  355.     assert_equal(["10"], "\x10\xef".unpack("H2"))
    356. 

  356.     assert_equal(["10e"], "\x10\xef".unpack("H3"))
    357. 

  357.     assert_equal(["10ef"], "\x10\xef".unpack("H4"))
    358. 

  358.     assert_equal(["10ef"], "\x10\xef".unpack("H5"))
    359. 

  359. 

  360.     assert_equal(Encoding::US_ASCII, "\x10\xef".unpack("h*")[0].encoding)
    361. 

  361.     assert_equal(Encoding::US_ASCII, "\x10\xef".unpack("H*")[0].encoding)
    362. 

  362.   end
    363. 

  363. 

  364.   def test_pack_unpack_cC
    365. 

  365.     assert_equal("\0\1\xff", [0, 1, 255].pack("c*"))
    366. 

  366.     assert_equal("\0\1\xff", [0, 1, -1].pack("c*"))
    367. 

  367. 

  368.     assert_equal("\0\1\xff", [0, 1, 255].pack("C*"))
    369. 

  369.     assert_equal("\0\1\xff", [0, 1, -1].pack("C*"))
    370. 

  370. 

  371.     assert_equal([0, 1, -1], "\0\1\xff".unpack("c*"))
    372. 

  372. 

  373.     assert_equal([0, 1, 255], "\0\1\xff".unpack("C*"))
    374. 

  374.   end
    375. 

  375. 

  376.   def test_pack_unpack_sS
    377. 

  377.     s1 = [513, -514].pack("s*")
    378. 

  378.     s2 = [513, 65022].pack("S*")
    379. 

  379.     assert_equal(s1, s2)
    380. 

  380.     assert_equal([513, -514], s2.unpack("s*"))
    381. 

  381.     assert_equal([513, 65022], s1.unpack("S*"))
    382. 

  382. 

  383.     s1 = [513, -514].pack("s!*")
    384. 

  384.     s2 = [513, 65022].pack("S!*")
    385. 

  385.     assert_equal(s1, s2)
    386. 

  386.     assert_equal([513, -514], s2.unpack("s!*"))
    387. 

  387.     assert_equal([513, 65022], s1.unpack("S!*"))
    388. 

  388. 

  389.     assert_equal(2, [1].pack("s").bytesize)
    390. 

  390.     assert_equal(2, [1].pack("S").bytesize)
    391. 

  391.     assert_operator(2, :<=, [1].pack("s!").bytesize)
    392. 

  392.     assert_operator(2, :<=, [1].pack("S!").bytesize)
    393. 

  393.   end
    394. 

  394. 

  395.   def test_pack_unpack_iI
    396. 

  396.     s1 = [67305985, -50462977].pack("i*")
    397. 

  397.     s2 = [67305985, 4244504319].pack("I*")
    398. 

  398.     assert_equal(s1, s2)
    399. 

  399.     assert_equal([67305985, -50462977], s2.unpack("i*"))
    400. 

  400.     assert_equal([67305985, 4244504319], s1.unpack("I*"))
    401. 

  401. 

  402.     s1 = [67305985, -50462977].pack("i!*")
    403. 

  403.     s2 = [67305985, 4244504319].pack("I!*")
    404. 

  404.     assert_equal([67305985, -50462977], s1.unpack("i!*"))
    405. 

  405.     assert_equal([67305985, 4244504319], s2.unpack("I!*"))
    406. 

  406. 

  407.     assert_operator(4, :<=, [1].pack("i").bytesize)
    408. 

  408.     assert_operator(4, :<=, [1].pack("I").bytesize)
    409. 

  409.     assert_operator(4, :<=, [1].pack("i!").bytesize)
    410. 

  410.     assert_operator(4, :<=, [1].pack("I!").bytesize)
    411. 

  411.   end
    412. 

  412. 

  413.   def test_pack_unpack_lL
    414. 

  414.     s1 = [67305985, -50462977].pack("l*")
    415. 

  415.     s2 = [67305985, 4244504319].pack("L*")
    416. 

  416.     assert_equal(s1, s2)
    417. 

  417.     assert_equal([67305985, -50462977], s2.unpack("l*"))
    418. 

  418.     assert_equal([67305985, 4244504319], s1.unpack("L*"))
    419. 

  419. 

  420.     s1 = [67305985, -50462977].pack("l!*")
    421. 

  421.     s2 = [67305985, 4244504319].pack("L!*")
    422. 

  422.     assert_equal([67305985, -50462977], s1.unpack("l!*"))
    423. 

  423.     assert_equal([67305985, 4244504319], s2.unpack("L!*"))
    424. 

  424. 

  425.     assert_equal(4, [1].pack("l").bytesize)
    426. 

  426.     assert_equal(4, [1].pack("L").bytesize)
    427. 

  427.     assert_operator(4, :<=, [1].pack("l!").bytesize)
    428. 

  428.     assert_operator(4, :<=, [1].pack("L!").bytesize)
    429. 

  429.   end
    430. 

  430. 

  431.   require 'rbconfig'
    432. 

  432.   def test_pack_unpack_qQ
    433. 

  433.     s1 = [578437695752307201, -506097522914230529].pack("q*")
    434. 

  434.     s2 = [578437695752307201, 17940646550795321087].pack("Q*")
    435. 

  435.     assert_equal(s1, s2)
    436. 

  436.     assert_equal([578437695752307201, -506097522914230529], s2.unpack("q*"))
    437. 

  437.     assert_equal([578437695752307201, 17940646550795321087], s1.unpack("Q*"))
    438. 

  438. 

  439.     # Note: q! and Q! should not work on platform which has no long long type.
    440. 

  440.     # Is there a such platform now?
    441. 

  441.     # @shyouhei: Yes. gcc -ansi is one of such platform.
    442. 

  442.     s1 = [578437695752307201, -506097522914230529].pack("q!*")
    443. 

  443.     s2 = [578437695752307201, 17940646550795321087].pack("Q!*")
    444. 

  444.     assert_equal([578437695752307201, -506097522914230529], s2.unpack("q!*"))
    445. 

  445.     assert_equal([578437695752307201, 17940646550795321087], s1.unpack("Q!*"))
    446. 

  446. 

  447.     assert_equal(8, [1].pack("q").bytesize)
    448. 

  448.     assert_equal(8, [1].pack("Q").bytesize)
    449. 

  449.     assert_operator(8, :<=, [1].pack("q!").bytesize)
    450. 

  450.     assert_operator(8, :<=, [1].pack("Q!").bytesize)
    451. 

  451.   end if RbConfig::CONFIG['HAVE_LONG_LONG']
    452. 

  452. 

  453.   def test_pack_unpack_jJ
    454. 

  454.     # Note: we assume that the size of intptr_t and uintptr_t equals to the size
    455. 

  455.     # of real pointer.
    456. 

  456.     psize = [nil].pack("p").bytesize
    457. 

  457.     if psize == 4
    458. 

  458.       s1 = [67305985, -50462977].pack("j*")
    459. 

  459.       s2 = [67305985, 4244504319].pack("J*")
    460. 

  460.       assert_equal(s1, s2)
    461. 

  461.       assert_equal([67305985, -50462977], s2.unpack("j*"))
    462. 

  462.       assert_equal([67305985, 4244504319], s1.unpack("J*"))
    463. 

  463. 

  464.       s1 = [67305985, -50462977].pack("j!*")
    465. 

  465.       s2 = [67305985, 4244504319].pack("J!*")
    466. 

  466.       assert_equal([67305985, -50462977], s1.unpack("j!*"))
    467. 

  467.       assert_equal([67305985, 4244504319], s2.unpack("J!*"))
    468. 

  468. 

  469.       assert_equal(4, [1].pack("j").bytesize)
    470. 

  470.       assert_equal(4, [1].pack("J").bytesize)
    471. 

  471.     elsif psize == 8
    472. 

  472.       s1 = [578437695752307201, -506097522914230529].pack("j*")
    473. 

  473.       s2 = [578437695752307201, 17940646550795321087].pack("J*")
    474. 

  474.       assert_equal(s1, s2)
    475. 

  475.       assert_equal([578437695752307201, -506097522914230529], s2.unpack("j*"))
    476. 

  476.       assert_equal([578437695752307201, 17940646550795321087], s1.unpack("J*"))
    477. 

  477. 

  478.       s1 = [578437695752307201, -506097522914230529].pack("j!*")
    479. 

  479.       s2 = [578437695752307201, 17940646550795321087].pack("J!*")
    480. 

  480.       assert_equal([578437695752307201, -506097522914230529], s2.unpack("j!*"))
    481. 

  481.       assert_equal([578437695752307201, 17940646550795321087], s1.unpack("J!*"))
    482. 

  482. 

  483.       assert_equal(8, [1].pack("j").bytesize)
    484. 

  484.       assert_equal(8, [1].pack("J").bytesize)
    485. 

  485.     else
    486. 

  486.       assert false, "we don't know such platform now."
    487. 

  487.     end
    488. 

  488.   end
    489. 

  489. 

  490.   def test_pack_unpack_nN
    491. 

  491.     assert_equal("\000\000\000\001\377\377\177\377\200\000\377\377", [0,1,-1,32767,-32768,65535].pack("n*"))
    492. 

  492.     assert_equal("\000\000\000\000\000\000\000\001\377\377\377\377", [0,1,-1].pack("N*"))
    493. 

  493. 

  494.     assert_equal([0,1,65535,32767,32768,65535], "\000\000\000\001\377\377\177\377\200\000\377\377".unpack("n*"))
    495. 

  495.     assert_equal([0,1,4294967295], "\000\000\000\000\000\000\000\001\377\377\377\377".unpack("N*"))
    496. 

  496. 

  497.     assert_equal(2, [1].pack("n").bytesize)
    498. 

  498.     assert_equal(4, [1].pack("N").bytesize)
    499. 

  499.   end
    500. 

  500. 

  501.   def test_pack_unpack_vV
    502. 

  502.     assert_equal("\000\000\001\000\377\377\377\177\000\200\377\377", [0,1,-1,32767,-32768,65535].pack("v*"))
    503. 

  503.     assert_equal("\000\000\000\000\001\000\000\000\377\377\377\377", [0,1,-1].pack("V*"))
    504. 

  504. 

  505.     assert_equal([0,1,65535,32767,32768,65535], "\000\000\001\000\377\377\377\177\000\200\377\377".unpack("v*"))
    506. 

  506.     assert_equal([0,1,4294967295], "\000\000\000\000\001\000\000\000\377\377\377\377".unpack("V*"))
    507. 

  507. 

  508.     assert_equal(2, [1].pack("v").bytesize)
    509. 

  509.     assert_equal(4, [1].pack("V").bytesize)
    510. 

  510.   end
    511. 

  511. 

  512.   def test_pack_unpack_fdeEgG
    513. 

  513.     inf = 1.0/0.0
    514. 

  514.     nan = inf/inf
    515. 

  515.     [0.0, 1.0, 3.0, inf, -inf, nan].each do |x|
    516. 

  516.       %w(f d e E g G).each do |f|
    517. 

  517.         v = [x].pack(f).unpack(f)
    518. 

  518.         if x.nan?
    519. 

  519.           assert_predicate(v.first, :nan?)
    520. 

  520.         else
    521. 

  521.           assert_equal([x], v)
    522. 

  522.         end
    523. 

  523.       end
    524. 

  524.     end
    525. 

  525.   end
    526. 

  526. 

  527.   def test_pack_unpack_x
    528. 

  528.     assert_equal("", [].pack("x0"))
    529. 

  529.     assert_equal("\0", [].pack("x"))
    530. 

  530.     assert_equal("\0" * 30, [].pack("x30"))
    531. 

  531. 

  532.     assert_equal([0, 2], "\x00\x00\x02".unpack("CxC"))
    533. 

  533.     assert_raise(ArgumentError) { "".unpack("x") }
    534. 

  534.   end
    535. 

  535. 

  536.   def test_pack_unpack_X
    537. 

  537.     assert_equal("\x00\x02", [0, 1, 2].pack("CCXC"))
    538. 

  538.     assert_equal("\x02", [0, 1, 2].pack("CCX2C"))
    539. 

  539.     assert_raise(ArgumentError) { [].pack("X") }
    540. 

  540. 

  541.     assert_equal([0, 2, 2], "\x00\x02".unpack("CCXC"))
    542. 

  542.     assert_raise(ArgumentError) { "".unpack("X") }
    543. 

  543.   end
    544. 

  544. 

  545.   def test_pack_unpack_atmark
    546. 

  546.     assert_equal("\x01\x00\x00\x02", [1, 2].pack("C@3C"))
    547. 

  547.     assert_equal("\x02", [1, 2].pack("C@0C"))
    548. 

  548.     assert_equal("\x01\x02", [1, 2].pack("C@1C"))
    549. 

  549. 

  550.     assert_equal([1, 2], "\x01\x00\x00\x02".unpack("C@3C"))
    551. 

  551.     assert_equal([nil], "\x00".unpack("@1C")) # is it OK?
    552. 

  552.     assert_raise(ArgumentError) { "\x00".unpack("@2C") }
    553. 

  553. 

  554.     pos = RbConfig::LIMITS["UINTPTR_MAX"] - 99 # -100
    555. 

  555.     assert_raise(RangeError) {"0123456789".unpack("@#{pos}C10")}
    556. 

  556.   end
    557. 

  557. 

  558.   def test_pack_unpack_percent
    559. 

  559.     assert_raise(ArgumentError) { [].pack("%") }
    560. 

  560.     assert_raise(ArgumentError) { "".unpack("%") }
    561. 

  561.   end
    562. 

  562. 

  563.   def test_pack_unpack_U
    564. 

  564.     assert_equal([0], [0].pack("U").unpack("U"))
    565. 

  565.     assert_equal([0x80], [0x80].pack("U").unpack("U"))
    566. 

  566.     assert_equal([0x800], [0x800].pack("U").unpack("U"))
    567. 

  567.     assert_equal([0x10000], [0x10000].pack("U").unpack("U"))
    568. 

  568.     assert_equal([0x400000], [0x400000].pack("U").unpack("U"))
    569. 

  569. 

  570.     assert_raise(ArgumentError) { "\x80".unpack("U") }
    571. 

  571.     assert_raise(ArgumentError) { "\xff".unpack("U") }
    572. 

  572.     assert_raise(ArgumentError) { "\xfc\x00".unpack("U") }
    573. 

  573.     assert_raise(ArgumentError) { "\xc0\xc0".unpack("U") }
    574. 

  574.     assert_raise(ArgumentError) { "\xe0\x80\x80".unpack("U") }
    575. 

  575.   end
    576. 

  576. 

  577.   def test_pack_unpack_u
    578. 

  578.     assert_equal("", [""].pack("u"))
    579. 

  579.     assert_equal("!80``\n", ["a"].pack("u"))
    580. 

  580.     assert_equal("#86)C\n", ["abc"].pack("u"))
    581. 

  581.     assert_equal("$86)C9```\n", ["abcd"].pack("u"))
    582. 

  582.     assert_equal("M86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A\n", ["a"*45].pack("u"))
    583. 

  583.     assert_equal("M86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A\n!80``\n", ["a"*46].pack("u"))
    584. 

  584.     assert_equal("&86)C9&5F\n#9VAI\n", ["abcdefghi"].pack("u6"))
    585. 

  585. 

  586.     assert_equal("M86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A\n!80``\n", ["a"*46].pack("u0"))
    587. 

  587.     assert_equal("M86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A\n!80``\n", ["a"*46].pack("u1"))
    588. 

  588.     assert_equal("M86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A\n!80``\n", ["a"*46].pack("u2"))
    589. 

  589.     assert_equal(<<EXPECTED, ["a"*80].pack("u68"))
    590. 

  590. _86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A
    591. 

  591. 186%A86%A86%A86%A86%A86$`
    592. 

  592. EXPECTED
    593. 

    594. 

  594.     assert_equal([""], "".unpack("u"))
    595. 

  595.     assert_equal(["a"], "!80``\n".unpack("u"))
    596. 

  596.     assert_equal(["abc"], "#86)C\n".unpack("u"))
    597. 

  597.     assert_equal(["abcd"], "$86)C9```\n".unpack("u"))
    598. 

  598.     assert_equal(["a"*45], "M86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A\n".unpack("u"))
    599. 

  599.     assert_equal(["a"*46], "M86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A\n!80``\n".unpack("u"))
    600. 

  600.     assert_equal(["abcdefghi"], "&86)C9&5F\n#9VAI\n".unpack("u"))
    601. 

  601. 

  602.     assert_equal(["abcdef"], "#86)C\n#9&5F\n".unpack("u"))
    603. 

  603.     assert_equal(["abcdef"], "#86)CX\n#9&5FX\n".unpack("u")) # X is a (dummy) checksum.
    604. 

  604.     assert_equal(["abcdef"], "#86)C\r\n#9&5F\r\n".unpack("u"))
    605. 

  605.     assert_equal(["abcdef"], "#86)CX\r\n#9&5FX\r\n".unpack("u")) # X is a (dummy) checksum.
    606. 

  606. 

  607.     assert_equal(["\x00"], "\"\n".unpack("u"))
    608. 

  608.     assert_equal(["\x00"], "! \r \n".unpack("u"))
    609. 

  609.   end
    610. 

  610. 

  611.   def test_pack_unpack_m
    612. 

  612.     assert_equal("", [""].pack("m"))
    613. 

  613.     assert_equal("AA==\n", ["\0"].pack("m"))
    614. 

  614.     assert_equal("AAA=\n", ["\0\0"].pack("m"))
    615. 

  615.     assert_equal("AAAA\n", ["\0\0\0"].pack("m"))
    616. 

  616.     assert_equal("/w==\n", ["\377"].pack("m"))
    617. 

  617.     assert_equal("//8=\n", ["\377\377"].pack("m"))
    618. 

  618.     assert_equal("////\n", ["\377\377\377"].pack("m"))
    619. 

  619. 

  620.     assert_equal([""], "".unpack("m"))
    621. 

  621.     assert_equal(["\0"], "AA==\n".unpack("m"))
    622. 

  622.     assert_equal(["\0\0"], "AAA=\n".unpack("m"))
    623. 

  623.     assert_equal(["\0\0\0"], "AAAA\n".unpack("m"))
    624. 

  624.     assert_equal(["\377"], "/w==\n".unpack("m"))
    625. 

  625.     assert_equal(["\377\377"], "//8=\n".unpack("m"))
    626. 

  626.     assert_equal(["\377\377\377"], "////\n".unpack("m"))
    627. 

  627.     assert_equal([""], "A\n".unpack("m"))
    628. 

  628.     assert_equal(["\0"], "AA\n".unpack("m"))
    629. 

  629.     assert_equal(["\0"], "AA=\n".unpack("m"))
    630. 

  630.     assert_equal(["\0\0"], "AAA\n".unpack("m"))
    631. 

  631. 

  632.     bug10019 = '[ruby-core:63604] [Bug #10019]'
    633. 

  633.     size = ((4096-4)/4*3+1)
    634. 

  634.     assert_separately(%W[- #{size} #{bug10019}], <<-'end;')
    635. 

  635.       size = ARGV.shift.to_i
    636. 

  636.       bug = ARGV.shift
    637. 

  637.       assert_equal(size, ["a"*size].pack("m#{size+2}").unpack("m")[0].size, bug)
    638. 

  638.     end;
    639. 

  639.   end
    640. 

  640. 

  641.   def test_pack_unpack_m0
    642. 

  642.     assert_equal("", [""].pack("m0"))
    643. 

  643.     assert_equal("AA==", ["\0"].pack("m0"))
    644. 

  644.     assert_equal("AAA=", ["\0\0"].pack("m0"))
    645. 

  645.     assert_equal("AAAA", ["\0\0\0"].pack("m0"))
    646. 

  646.     assert_equal("/w==", ["\377"].pack("m0"))
    647. 

  647.     assert_equal("//8=", ["\377\377"].pack("m0"))
    648. 

  648.     assert_equal("////", ["\377\377\377"].pack("m0"))
    649. 

  649. 

  650.     assert_equal([""], "".unpack("m0"))
    651. 

  651.     assert_equal(["\0"], "AA==".unpack("m0"))
    652. 

  652.     assert_equal(["\0\0"], "AAA=".unpack("m0"))
    653. 

  653.     assert_equal(["\0\0\0"], "AAAA".unpack("m0"))
    654. 

  654.     assert_equal(["\377"], "/w==".unpack("m0"))
    655. 

  655.     assert_equal(["\377\377"], "//8=".unpack("m0"))
    656. 

  656.     assert_equal(["\377\377\377"], "////".unpack("m0"))
    657. 

  657. 

  658.     assert_raise(ArgumentError) { "^".unpack("m0") }
    659. 

  659.     assert_raise(ArgumentError) { "A".unpack("m0") }
    660. 

  660.     assert_raise(ArgumentError) { "A^".unpack("m0") }
    661. 

  661.     assert_raise(ArgumentError) { "AA".unpack("m0") }
    662. 

  662.     assert_raise(ArgumentError) { "AA=".unpack("m0") }
    663. 

  663.     assert_raise(ArgumentError) { "AA===".unpack("m0") }
    664. 

  664.     assert_raise(ArgumentError) { "AA=x".unpack("m0") }
    665. 

  665.     assert_raise(ArgumentError) { "AAA".unpack("m0") }
    666. 

  666.     assert_raise(ArgumentError) { "AAA^".unpack("m0") }
    667. 

  667.     assert_raise(ArgumentError) { "AB==".unpack("m0") }
    668. 

  668.     assert_raise(ArgumentError) { "AAB=".unpack("m0") }
    669. 

  669.   end
    670. 

  670. 

  671.   def test_pack_unpack_M
    672. 

  672.     assert_equal("a b c\td =\n\ne=\n", ["a b c\td \ne"].pack("M"))
    673. 

  673.     assert_equal(["a b c\td \ne"], "a b c\td =\n\ne=\n".unpack("M"))
    674. 

  674.     assert_equal("=00=\n", ["\0"].pack("M"))
    675. 

  675.     assert_equal("a"*73+"=\na=\n", ["a"*74].pack("M"))
    676. 

  676.     assert_equal(("a"*73+"=\n")*14+"a=\n", ["a"*1023].pack("M"))
    677. 

  677.     assert_equal(["\0"], "=00=\n".unpack("M"))
    678. 

  678.     assert_equal(["a"*74], ("a"*73+"=\na=\n").unpack("M"))
    679. 

  679.     assert_equal(["a"*1023], (("a"*73+"=\n")*14+"a=\n").unpack("M"))
    680. 

  680.     assert_equal(["\x0a"], "=0a=\n".unpack("M"))
    681. 

  681.     assert_equal(["\x0a"], "=0A=\n".unpack("M"))
    682. 

  682.     assert_equal(["=0Z=\n"], "=0Z=\n".unpack("M"))
    683. 

  683.     assert_equal([""], "=\r\n".unpack("M"))
    684. 

  684.     assert_equal(["\xC6\xF7"], "=C6=F7".unpack('M*'))
    685. 

  685. 

  686.     assert_equal(["pre123after"], "pre=31=32=33after".unpack("M"))
    687. 

  687.     assert_equal(["preafter"], "pre=\nafter".unpack("M"))
    688. 

  688.     assert_equal(["preafter"], "pre=\r\nafter".unpack("M"))
    689. 

  689.     assert_equal(["pre="], "pre=".unpack("M"))
    690. 

  690.     assert_equal(["pre=\r"], "pre=\r".unpack("M"))
    691. 

  691.     assert_equal(["pre=hoge"], "pre=hoge".unpack("M"))
    692. 

  692.     assert_equal(["pre==31after"], "pre==31after".unpack("M"))
    693. 

  693.     assert_equal(["pre===31after"], "pre===31after".unpack("M"))
    694. 

  694. 

  695.     bug = '[ruby-core:83055] [Bug #13949]'
    696. 

  696.     s = "abcdef".unpack1("M")
    697. 

  697.     assert_equal(Encoding::ASCII_8BIT, s.encoding)
    698. 

  698.     assert_predicate(s, :ascii_only?, bug)
    699. 

  699.   end
    700. 

  700. 

  701.   def test_pack_unpack_P2
    702. 

  702.     assert_raise(ArgumentError) { ["abc"].pack("P4") }
    703. 

  703.     assert_raise(ArgumentError) { [""].pack("P") }
    704. 

  704. 

  705.     assert_equal([], ".".unpack("P"))
    706. 

  706.     assert_equal([], ".".unpack("p"))
    707. 

  707.     assert_equal([nil], ("\0" * 1024).unpack("P"))
    708. 

  708.   end
    709. 

  709. 

  710.   def test_pack_p2
    711. 

  711.     assert_match(/\A\0*\Z/, [nil].pack("p"))
    712. 

  712.   end
    713. 

  713. 

  714.   def test_pack_unpack_w
    715. 

  715.     assert_equal("\000", [0].pack("w"))
    716. 

  716.     assert_equal("\001", [1].pack("w"))
    717. 

  717.     assert_equal("\177", [127].pack("w"))
    718. 

  718.     assert_equal("\201\000", [128].pack("w"))
    719. 

  719.     assert_equal("\377\177", [0x3fff].pack("w"))
    720. 

  720.     assert_equal("\201\200\000", [0x4000].pack("w"))
    721. 

  721.     assert_equal("\203\377\377\377\177", [0x3fffffff].pack("w"))
    722. 

  722.     assert_equal("\204\200\200\200\000", [0x40000000].pack("w"))
    723. 

  723.     assert_equal("\217\377\377\377\177", [0xffffffff].pack("w"))
    724. 

  724.     assert_equal("\220\200\200\200\000", [0x100000000].pack("w"))
    725. 

  725.     assert_raise(ArgumentError) { [-1].pack("w") }
    726. 

  726. 

  727.     assert_equal([0], "\000".unpack("w"))
    728. 

  728.     assert_equal([1], "\001".unpack("w"), [1])
    729. 

  729.     assert_equal([127], "\177".unpack("w"), [127])
    730. 

  730.     assert_equal([128], "\201\000".unpack("w"), [128])
    731. 

  731.     assert_equal([0x3fff], "\377\177".unpack("w"), [0x3fff])
    732. 

  732.     assert_equal([0x4000], "\201\200\000".unpack("w"), [0x4000])
    733. 

  733.     assert_equal([0x3fffffff], "\203\377\377\377\177".unpack("w"), [0x3fffffff])
    734. 

  734.     assert_equal([0x40000000], "\204\200\200\200\000".unpack("w"), [0x40000000])
    735. 

  735.     assert_equal([0xffffffff], "\217\377\377\377\177".unpack("w"), [0xffffffff])
    736. 

  736.     assert_equal([0x100000000], "\220\200\200\200\000".unpack("w"), [0x100000000])
    737. 

  737.   end
    738. 

  738. 

  739.   def test_length_too_big
    740. 

  740.     assert_raise(RangeError) { [].pack("C100000000000000000000") }
    741. 

  741.   end
    742. 

  742. 

  743.   def test_short_string
    744. 

  744.     %w[n N v V s S i I l L q Q s! S! i! I! l! l!].each {|fmt|
    745. 

  745.       str = [1].pack(fmt)
    746. 

  746.       assert_equal([1,nil], str.unpack("#{fmt}2"))
    747. 

  747.     }
    748. 

  748.   end
    749. 

  749. 

  750.   def test_short_with_block
    751. 

  751.     bug4059 = '[ruby-core:33193]'
    752. 

  752.     result = :ok
    753. 

  753.     assert_nil("".unpack("i") {|x| result = x}, bug4059)
    754. 

  754.     assert_equal(:ok, result)
    755. 

  755.   end
    756. 

  756. 

  757.   def test_pack_garbage
    758. 

  758.     verbose = $VERBOSE
    759. 

  759.     $VERBOSE = false
    760. 

  760. 

  761.     assert_silent do
    762. 

  762.       assert_equal "\000", [0].pack("*U")
    763. 

  763.     end
    764. 

  764. 

  765.     $VERBOSE = true
    766. 

  766. 

  767.     _, err = capture_io do
    768. 

  768.       assert_equal "\000", [0].pack("*U")
    769. 

  769.     end
    770. 

  770. 

  771.     assert_match %r%unknown pack directive '\*' in '\*U'$%, err
    772. 

  772.   ensure
    773. 

  773.     $VERBOSE = verbose
    774. 

  774.   end
    775. 

  775. 

  776.   def test_unpack_garbage
    777. 

  777.     verbose = $VERBOSE
    778. 

  778.     $VERBOSE = false
    779. 

  779. 

  780.     assert_silent do
    781. 

  781.       assert_equal [0], "\000".unpack("*U")
    782. 

  782.     end
    783. 

  783. 

  784.     $VERBOSE = true
    785. 

  785. 

  786.     _, err = capture_io do
    787. 

  787.       assert_equal [0], "\000".unpack("*U")
    788. 

  788.     end
    789. 

  789. 

  790.     assert_match %r%unknown unpack directive '\*' in '\*U'$%, err
    791. 

  791.   ensure
    792. 

  792.     $VERBOSE = verbose
    793. 

  793.   end
    794. 

  794. 

  795.   def test_invalid_warning
    796. 

  796.     assert_warning(/unknown pack directive ',' in ','/) {
    797. 

  797.       [].pack(",")
    798. 

  798.     }
    799. 

  799.     assert_warning(/\A[ -~]+\Z/) {
    800. 

  800.       [].pack("\x7f")
    801. 

  801.     }
    802. 

  802.     assert_warning(/\A(.* in '\u{3042}'\n)+\z/) {
    803. 

  803.       [].pack("\u{3042}")
    804. 

  804.     }
    805. 

  805. 

  806.     assert_warning(/\A.* in '.*U'\Z/) {
    807. 

  807.       assert_equal "\000", [0].pack("\0U")
    808. 

  808.     }
    809. 

  809.     assert_warning(/\A.* in '.*U'\Z/) {
    810. 

  810.       "\000".unpack("\0U")
    811. 

  811.     }
    812. 

  812.   end
    813. 

  813. 

  814.   def test_pack_resize
    815. 

  815.     assert_separately([], <<-'end;')
    816. 

  816.       ary = []
    817. 

  817.       obj = Class.new {
    818. 

  818.         define_method(:to_str) {
    819. 

  819.           ary.clear()
    820. 

  820.           ary = nil
    821. 

  821.           GC.start
    822. 

  822.           "TALOS"
    823. 

  823.         }
    824. 

  824.       }.new
    825. 

  825. 

  826.       ary.push(obj)
    827. 

  827.       ary.push(".")
    828. 

  828. 

  829.       assert_raise_with_message(ArgumentError, /too few/) {ary.pack("AA")}
    830. 

  830.     end;
    831. 

  831.   end
    832. 

  832. 

  833.   def test_pack_with_buffer
    834. 

  834.     buf = String.new(capacity: 100)
    835. 

  835. 

  836.     assert_raise_with_message(FrozenError, /frozen/) {
    837. 

  837.       [0xDEAD_BEEF].pack('N', buffer: 'foo'.freeze)
    838. 

  838.     }
    839. 

  839.     assert_raise_with_message(TypeError, /must be String/) {
    840. 

  840.       [0xDEAD_BEEF].pack('N', buffer: Object.new)
    841. 

  841.     }
    842. 

  842. 

  843.     addr = [buf].pack('p')
    844. 

  844. 

  845.     [0xDEAD_BEEF].pack('N', buffer: buf)
    846. 

  846.     assert_equal "\xDE\xAD\xBE\xEF", buf
    847. 

  847. 

  848.     [0xBABE_F00D].pack('@4N', buffer: buf)
    849. 

  849.     assert_equal "\xDE\xAD\xBE\xEF\xBA\xBE\xF0\x0D", buf
    850. 

  850.     assert_equal addr, [buf].pack('p')
    851. 

  851. 

  852.     [0xBAAD_FACE].pack('@10N', buffer: buf)
    853. 

  853.     assert_equal "\xDE\xAD\xBE\xEF\xBA\xBE\xF0\x0D\0\0\xBA\xAD\xFA\xCE", buf
    854. 

  854. 

  855.     assert_equal addr, [buf].pack('p')
    856. 

  856.   end
    857. 

  857. 

  858.   def test_unpack_with_block
    859. 

  859.     ret = []; "ABCD".unpack("CCCC") {|v| ret << v }
    860. 

  860.     assert_equal [65, 66, 67, 68], ret
    861. 

  861.     ret = []; "A".unpack("B*") {|v| ret << v.dup }
    862. 

  862.     assert_equal ["01000001"], ret
    863. 

  863.   end
    864. 

  864. 

  865.   def test_unpack1
    866. 

  866.     assert_equal 65, "A".unpack1("C")
    867. 

  867.     assert_equal 68, "ABCD".unpack1("x3C")
    868. 

  868.     assert_equal 0x3042, "\u{3042 3044 3046}".unpack1("U*")
    869. 

  869.     assert_equal "hogefuga", "aG9nZWZ1Z2E=".unpack1("m")
    870. 

  870.     assert_equal "01000001", "A".unpack1("B*")
    871. 

  871.   end
    872. 

  872. end
    873. 

  873.