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ruby--ruby/test/ruby/test_pack.rb

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require 'test/unit'
class TestPack < Test::Unit::TestCase
def test_pack
$format = "c2x5CCxsdils_l_a6";
# Need the expression in here to force ary[5] to be numeric. This avoids
# test2 failing because ary2 goes str->numeric->str and ary does not.
ary = [1,-100,127,128,32767,987.654321098 / 100.0,12345,123456,-32767,-123456,"abcdef"]
$x = ary.pack($format)
ary2 = $x.unpack($format)
assert_equal(ary.length, ary2.length)
assert_equal(ary.join(':'), ary2.join(':'))
assert_match(/def/, $x)
$x = [-1073741825]
assert_equal($x, $x.pack("q").unpack("q"))
$x = [-1]
assert_equal($x, $x.pack("l").unpack("l"))
end
def test_pack_N
assert_equal "\000\000\000\000", [0].pack('N')
assert_equal "\000\000\000\001", [1].pack('N')
assert_equal "\000\000\000\002", [2].pack('N')
assert_equal "\000\000\000\003", [3].pack('N')
assert_equal "\377\377\377\376", [4294967294].pack('N')
assert_equal "\377\377\377\377", [4294967295].pack('N')
assert_equal "\200\000\000\000", [2**31].pack('N')
assert_equal "\177\377\377\377", [-2**31-1].pack('N')
assert_equal "\377\377\377\377", [-1].pack('N')
assert_equal "\000\000\000\001\000\000\000\001", [1,1].pack('N*')
assert_equal "\000\000\000\001\000\000\000\001\000\000\000\001", [1,1,1].pack('N*')
end
def test_unpack_N
assert_equal 1, "\000\000\000\001".unpack('N')[0]
assert_equal 2, "\000\000\000\002".unpack('N')[0]
assert_equal 3, "\000\000\000\003".unpack('N')[0]
assert_equal 3, "\000\000\000\003".unpack('N')[0]
assert_equal 4294967295, "\377\377\377\377".unpack('N')[0]
assert_equal [1,1], "\000\000\000\001\000\000\000\001".unpack('N*')
assert_equal [1,1,1], "\000\000\000\001\000\000\000\001\000\000\000\001".unpack('N*')
end
def test_pack_U
assert_raise(RangeError) { [-0x40000001].pack("U") }
assert_raise(RangeError) { [-0x40000000].pack("U") }
assert_raise(RangeError) { [-1].pack("U") }
assert_equal "\000", [0].pack("U")
assert_equal "\374\277\277\277\277\277".force_encoding(Encoding::UTF_8), [0x3fffffff].pack("U")
assert_equal "\375\200\200\200\200\200".force_encoding(Encoding::UTF_8), [0x40000000].pack("U")
assert_equal "\375\277\277\277\277\277".force_encoding(Encoding::UTF_8), [0x7fffffff].pack("U")
assert_raise(RangeError) { [0x80000000].pack("U") }
assert_raise(RangeError) { [0x100000000].pack("U") }
end
def test_pack_P
a = ["abc"]
assert_equal a, a.pack("P").unpack("P*")
assert_equal "a", a.pack("P").unpack("P")[0]
assert_equal a, a.pack("P").freeze.unpack("P*")
assert_raise(ArgumentError) { (a.pack("P") + "").unpack("P*") }
end
def test_pack_p
a = ["abc"]
assert_equal a, a.pack("p").unpack("p*")
assert_equal a[0], a.pack("p").unpack("p")[0]
assert_equal a, a.pack("p").freeze.unpack("p*")
assert_raise(ArgumentError) { (a.pack("p") + "").unpack("p*") }
end
def test_format_string_modified
fmt = "CC"
o = Object.new
class << o; self; end.class_eval do
define_method(:to_int) { fmt.clear; 0 }
end
assert_raise(RuntimeError) do
[o, o].pack(fmt)
end
end
def test_comment
assert_equal("\0\1", [0,1].pack(" C #foo \n C "))
assert_equal([0,1], "\0\1".unpack(" C #foo \n C "))
end
def test_illegal_bang
assert_raise(ArgumentError) { [].pack("a!") }
assert_raise(ArgumentError) { "".unpack("a!") }
end
def test_pack_unpack_aA
assert_equal("f", ["foo"].pack("A"))
assert_equal("f", ["foo"].pack("a"))
assert_equal("foo", ["foo"].pack("A*"))
assert_equal("foo", ["foo"].pack("a*"))
assert_equal("fo", ["foo"].pack("A2"))
assert_equal("fo", ["foo"].pack("a2"))
assert_equal("foo ", ["foo"].pack("A4"))
assert_equal("foo\0", ["foo"].pack("a4"))
assert_equal(" ", [nil].pack("A"))
assert_equal("\0", [nil].pack("a"))
assert_equal("", [nil].pack("A*"))
assert_equal("", [nil].pack("a*"))
assert_equal(" ", [nil].pack("A2"))
assert_equal("\0\0", [nil].pack("a2"))
assert_equal("foo" + "\0" * 27, ["foo"].pack("a30"))
assert_equal(["f"], "foo\0".unpack("A"))
assert_equal(["f"], "foo\0".unpack("a"))
assert_equal(["foo"], "foo\0".unpack("A4"))
assert_equal(["foo\0"], "foo\0".unpack("a4"))
assert_equal(["foo"], "foo ".unpack("A4"))
assert_equal(["foo "], "foo ".unpack("a4"))
assert_equal(["foo"], "foo".unpack("A4"))
assert_equal(["foo"], "foo".unpack("a4"))
end
def test_pack_unpack_Z
assert_equal("f", ["foo"].pack("Z"))
assert_equal("foo\0", ["foo"].pack("Z*"))
assert_equal("fo", ["foo"].pack("Z2"))
assert_equal("foo\0\0", ["foo"].pack("Z5"))
assert_equal("\0", [nil].pack("Z"))
assert_equal("\0", [nil].pack("Z*"))
assert_equal("\0\0", [nil].pack("Z2"))
assert_equal(["f"], "foo\0".unpack("Z"))
assert_equal(["foo"], "foo".unpack("Z*"))
assert_equal(["foo"], "foo\0".unpack("Z*"))
assert_equal(["foo"], "foo".unpack("Z5"))
end
def test_pack_unpack_bB
assert_equal("\xff\x00", ["1111111100000000"].pack("b*"))
assert_equal("\x01\x02", ["1000000001000000"].pack("b*"))
assert_equal("", ["1"].pack("b0"))
assert_equal("\x01", ["1"].pack("b1"))
assert_equal("\x01\x00", ["1"].pack("b2"))
assert_equal("\x01\x00", ["1"].pack("b3"))
assert_equal("\x01\x00\x00", ["1"].pack("b4"))
assert_equal("\x01\x00\x00", ["1"].pack("b5"))
assert_equal("\x01\x00\x00\x00", ["1"].pack("b6"))
assert_equal("\xff\x00", ["1111111100000000"].pack("B*"))
assert_equal("\x01\x02", ["0000000100000010"].pack("B*"))
assert_equal("", ["1"].pack("B0"))
assert_equal("\x80", ["1"].pack("B1"))
assert_equal("\x80\x00", ["1"].pack("B2"))
assert_equal("\x80\x00", ["1"].pack("B3"))
assert_equal("\x80\x00\x00", ["1"].pack("B4"))
assert_equal("\x80\x00\x00", ["1"].pack("B5"))
assert_equal("\x80\x00\x00\x00", ["1"].pack("B6"))
assert_equal(["1111111100000000"], "\xff\x00".unpack("b*"))
assert_equal(["1000000001000000"], "\x01\x02".unpack("b*"))
assert_equal([""], "".unpack("b0"))
assert_equal(["1"], "\x01".unpack("b1"))
assert_equal(["10"], "\x01".unpack("b2"))
assert_equal(["100"], "\x01".unpack("b3"))
assert_equal(["1111111100000000"], "\xff\x00".unpack("B*"))
assert_equal(["0000000100000010"], "\x01\x02".unpack("B*"))
assert_equal([""], "".unpack("B0"))
assert_equal(["1"], "\x80".unpack("B1"))
assert_equal(["10"], "\x80".unpack("B2"))
assert_equal(["100"], "\x80".unpack("B3"))
end
def test_pack_unpack_hH
assert_equal("\x01\xfe", ["10ef"].pack("h*"))
assert_equal("", ["10ef"].pack("h0"))
assert_equal("\x01\x0e", ["10ef"].pack("h3"))
assert_equal("\x01\xfe\x0", ["10ef"].pack("h5"))
assert_equal("\xff\x0f", ["fff"].pack("h3"))
assert_equal("\xff\x0f", ["fff"].pack("h4"))
assert_equal("\xff\x0f\0", ["fff"].pack("h5"))
assert_equal("\xff\x0f\0", ["fff"].pack("h6"))
assert_equal("\xff\x0f\0\0", ["fff"].pack("h7"))
assert_equal("\xff\x0f\0\0", ["fff"].pack("h8"))
assert_equal("\x10\xef", ["10ef"].pack("H*"))
assert_equal("", ["10ef"].pack("H0"))
assert_equal("\x10\xe0", ["10ef"].pack("H3"))
assert_equal("\x10\xef\x0", ["10ef"].pack("H5"))
assert_equal("\xff\xf0", ["fff"].pack("H3"))
assert_equal("\xff\xf0", ["fff"].pack("H4"))
assert_equal("\xff\xf0\0", ["fff"].pack("H5"))
assert_equal("\xff\xf0\0", ["fff"].pack("H6"))
assert_equal("\xff\xf0\0\0", ["fff"].pack("H7"))
assert_equal("\xff\xf0\0\0", ["fff"].pack("H8"))
assert_equal(["10ef"], "\x01\xfe".unpack("h*"))
assert_equal([""], "\x01\xfe".unpack("h0"))
assert_equal(["1"], "\x01\xfe".unpack("h1"))
assert_equal(["10"], "\x01\xfe".unpack("h2"))
assert_equal(["10e"], "\x01\xfe".unpack("h3"))
assert_equal(["10ef"], "\x01\xfe".unpack("h4"))
assert_equal(["10ef"], "\x01\xfe".unpack("h5"))
assert_equal(["10ef"], "\x10\xef".unpack("H*"))
assert_equal([""], "\x10\xef".unpack("H0"))
assert_equal(["1"], "\x10\xef".unpack("H1"))
assert_equal(["10"], "\x10\xef".unpack("H2"))
assert_equal(["10e"], "\x10\xef".unpack("H3"))
assert_equal(["10ef"], "\x10\xef".unpack("H4"))
assert_equal(["10ef"], "\x10\xef".unpack("H5"))
end
def test_pack_unpack_cC
assert_equal("\0\1\xff", [0, 1, 255].pack("c*"))
assert_equal("\0\1\xff", [0, 1, -1].pack("c*"))
assert_equal("\0\1\xff", [0, 1, 255].pack("C*"))
assert_equal("\0\1\xff", [0, 1, -1].pack("C*"))
assert_equal([0, 1, -1], "\0\1\xff".unpack("c*"))
assert_equal([0, 1, 255], "\0\1\xff".unpack("C*"))
end
def test_pack_unpack_sS
s1 = [513, -514].pack("s*")
s2 = [513, 65022].pack("S*")
assert_equal(s1, s2)
assert_equal([513, -514], s2.unpack("s*"))
assert_equal([513, 65022], s1.unpack("S*"))
s1 = [513, -514].pack("s!*")
s2 = [513, 65022].pack("S!*")
assert_equal(s1, s2)
assert_equal([513, -514], s2.unpack("s!*"))
assert_equal([513, 65022], s1.unpack("S!*"))
end
def test_pack_unpack_iI
s1 = [67305985, -50462977].pack("i*")
s2 = [67305985, 4244504319].pack("I*")
assert_equal(s1, s2)
assert_equal([67305985, -50462977], s2.unpack("i*"))
assert_equal([67305985, 4244504319], s1.unpack("I*"))
s1 = [67305985, -50462977].pack("i!*")
s2 = [67305985, 4244504319].pack("I!*")
assert_equal([67305985, -50462977], s1.unpack("i!*"))
assert_equal([67305985, 4244504319], s2.unpack("I!*"))
end
def test_pack_unpack_lL
s1 = [67305985, -50462977].pack("l*")
s2 = [67305985, 4244504319].pack("L*")
assert_equal(s1, s2)
assert_equal([67305985, -50462977], s2.unpack("l*"))
assert_equal([67305985, 4244504319], s1.unpack("L*"))
s1 = [67305985, -50462977].pack("l!*")
s2 = [67305985, 4244504319].pack("L!*")
assert_equal([67305985, -50462977], s1.unpack("l!*"))
assert_equal([67305985, 4244504319], s2.unpack("L!*"))
end
def test_pack_unpack_qQ
s1 = [578437695752307201, -506097522914230529].pack("q*")
s2 = [578437695752307201, 17940646550795321087].pack("Q*")
assert_equal(s1, s2)
assert_equal([578437695752307201, -506097522914230529], s2.unpack("q*"))
assert_equal([578437695752307201, 17940646550795321087], s1.unpack("Q*"))
end
def test_pack_unpack_nN
assert_equal("\000\000\000\001\377\377\177\377\200\000\377\377", [0,1,-1,32767,-32768,65535].pack("n*"))
assert_equal("\000\000\000\000\000\000\000\001\377\377\377\377", [0,1,-1].pack("N*"))
assert_equal([0,1,65535,32767,32768,65535], "\000\000\000\001\377\377\177\377\200\000\377\377".unpack("n*"))
assert_equal([0,1,4294967295], "\000\000\000\000\000\000\000\001\377\377\377\377".unpack("N*"))
end
def test_pack_unpack_vV
assert_equal("\000\000\001\000\377\377\377\177\000\200\377\377", [0,1,-1,32767,-32768,65535].pack("v*"))
assert_equal("\000\000\000\000\001\000\000\000\377\377\377\377", [0,1,-1].pack("V*"))
assert_equal([0,1,65535,32767,32768,65535], "\000\000\001\000\377\377\377\177\000\200\377\377".unpack("v*"))
assert_equal([0,1,4294967295], "\000\000\000\000\001\000\000\000\377\377\377\377".unpack("V*"))
end
def test_pack_unpack_fdeEgG
inf = 1.0/0.0
nan = inf/inf
[0.0, 1.0, 3.0, inf, -inf, nan].each do |x|
%w(f d e E g G).each do |f|
v = [x].pack(f).unpack(f)
if x.nan?
assert(v.first.nan?)
else
assert_equal([x], v)
end
end
end
end
def test_pack_unpack_x
assert_equal("", [].pack("x0"))
assert_equal("\0", [].pack("x"))
assert_equal("\0" * 30, [].pack("x30"))
assert_equal([0, 2], "\x00\x00\x02".unpack("CxC"))
assert_raise(ArgumentError) { "".unpack("x") }
end
def test_pack_unpack_X
assert_equal("\x00\x02", [0, 1, 2].pack("CCXC"))
assert_equal("\x02", [0, 1, 2].pack("CCX2C"))
assert_raise(ArgumentError) { [].pack("X") }
assert_equal([0, 2, 2], "\x00\x02".unpack("CCXC"))
assert_raise(ArgumentError) { "".unpack("X") }
end
def test_pack_unpack_atmark
assert_equal("\x01\x00\x00\x02", [1, 2].pack("C@3C"))
assert_equal("\x02", [1, 2].pack("C@0C"))
assert_equal("\x01\x02", [1, 2].pack("C@1C"))
assert_equal([1, 2], "\x01\x00\x00\x02".unpack("C@3C"))
assert_equal([nil], "\x00".unpack("@1C")) # is it OK?
assert_raise(ArgumentError) { "\x00".unpack("@2C") }
end
def test_pack_unpack_percent
assert_raise(ArgumentError) { [].pack("%") }
assert_raise(ArgumentError) { "".unpack("%") }
end
def test_pack_unpack_U
assert_equal([0], [0].pack("U").unpack("U"))
assert_equal([0x80], [0x80].pack("U").unpack("U"))
assert_equal([0x800], [0x800].pack("U").unpack("U"))
assert_equal([0x10000], [0x10000].pack("U").unpack("U"))
assert_equal([0x400000], [0x400000].pack("U").unpack("U"))
assert_raise(ArgumentError) { "\x80".unpack("U") }
assert_raise(ArgumentError) { "\xff".unpack("U") }
assert_raise(ArgumentError) { "\xfc\x00".unpack("U") }
assert_raise(ArgumentError) { "\xc0\xc0".unpack("U") }
assert_raise(ArgumentError) { "\xe0\x80\x80".unpack("U") }
end
def test_pack_unpack_u
assert_equal("", [""].pack("u"))
assert_equal("!80``\n", ["a"].pack("u"))
assert_equal("#86)C\n", ["abc"].pack("u"))
assert_equal("$86)C9```\n", ["abcd"].pack("u"))
assert_equal("M86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A\n", ["a"*45].pack("u"))
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"))
assert_equal("&86)C9&5F\n#9VAI\n", ["abcdefghi"].pack("u6"))
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"))
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"))
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"))
assert_equal([""], "".unpack("u"))
assert_equal(["a"], "!80``\n".unpack("u"))
assert_equal(["abc"], "#86)C\n".unpack("u"))
assert_equal(["abcd"], "$86)C9```\n".unpack("u"))
assert_equal(["a"*45], "M86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A\n".unpack("u"))
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"))
assert_equal(["abcdefghi"], "&86)C9&5F\n#9VAI\n".unpack("u"))
assert_equal(["\x00"], "\"\n".unpack("u"))
assert_equal(["\x00"], "! \r \n".unpack("u"))
end
def test_pack_unpack_m
assert_equal("", [""].pack("m"))
assert_equal("AA==\n", ["\0"].pack("m"))
assert_equal("AAA=\n", ["\0\0"].pack("m"))
assert_equal("AAAA\n", ["\0\0\0"].pack("m"))
assert_equal("/w==\n", ["\377"].pack("m"))
assert_equal("//8=\n", ["\377\377"].pack("m"))
assert_equal("////\n", ["\377\377\377"].pack("m"))
assert_equal([""], "".unpack("m"))
assert_equal(["\0"], "AA==\n".unpack("m"))
assert_equal(["\0\0"], "AAA=\n".unpack("m"))
assert_equal(["\0\0\0"], "AAAA\n".unpack("m"))
assert_equal(["\377"], "/w==\n".unpack("m"))
assert_equal(["\377\377"], "//8=\n".unpack("m"))
assert_equal(["\377\377\377"], "////\n".unpack("m"))
end
def test_pack_unpack_m0
assert_equal("", [""].pack("m0"))
assert_equal("AA==", ["\0"].pack("m0"))
assert_equal("AAA=", ["\0\0"].pack("m0"))
assert_equal("AAAA", ["\0\0\0"].pack("m0"))
assert_equal("/w==", ["\377"].pack("m0"))
assert_equal("//8=", ["\377\377"].pack("m0"))
assert_equal("////", ["\377\377\377"].pack("m0"))
assert_equal([""], "".unpack("m0"))
assert_equal(["\0"], "AA==".unpack("m0"))
assert_equal(["\0\0"], "AAA=".unpack("m0"))
assert_equal(["\0\0\0"], "AAAA".unpack("m0"))
assert_equal(["\377"], "/w==".unpack("m0"))
assert_equal(["\377\377"], "//8=".unpack("m0"))
assert_equal(["\377\377\377"], "////".unpack("m0"))
assert_raise(ArgumentError) { "^".unpack("m0") }
assert_raise(ArgumentError) { "A".unpack("m0") }
assert_raise(ArgumentError) { "A^".unpack("m0") }
assert_raise(ArgumentError) { "AA".unpack("m0") }
assert_raise(ArgumentError) { "AA=".unpack("m0") }
assert_raise(ArgumentError) { "AA===".unpack("m0") }
assert_raise(ArgumentError) { "AA=x".unpack("m0") }
assert_raise(ArgumentError) { "AAA".unpack("m0") }
assert_raise(ArgumentError) { "AAA^".unpack("m0") }
assert_raise(ArgumentError) { "AB==".unpack("m0") }
assert_raise(ArgumentError) { "AAB=".unpack("m0") }
end
def test_pack_unpack_M
assert_equal("a b c\td =\n\ne=\n", ["a b c\td \ne"].pack("M"))
assert_equal(["a b c\td \ne"], "a b c\td =\n\ne=\n".unpack("M"))
assert_equal("=00=\n", ["\0"].pack("M"))
assert_equal("a"*73+"=\na=\n", ["a"*74].pack("M"))
assert_equal(("a"*73+"=\n")*14+"a=\n", ["a"*1023].pack("M"))
assert_equal(["\0"], "=00=\n".unpack("M"))
assert_equal(["a"*74], ("a"*73+"=\na=\n").unpack("M"))
assert_equal(["a"*1023], (("a"*73+"=\n")*14+"a=\n").unpack("M"))
assert_equal(["\x0a"], "=0a=\n".unpack("M"))
assert_equal(["\x0a"], "=0A=\n".unpack("M"))
assert_equal([""], "=0Z=\n".unpack("M"))
assert_equal([""], "=\r\n".unpack("M"))
end
def test_pack_unpack_P2
assert_raise(ArgumentError) { ["abc"].pack("P4") }
assert_raise(ArgumentError) { [""].pack("P") }
assert_equal([], ".".unpack("P"))
assert_equal([], ".".unpack("p"))
assert_equal([nil], ("\0" * 1024).unpack("P"))
end
def test_pack_p2
assert([nil].pack("p") =~ /\A\0*\Z/)
end
def test_pack_unpack_w
assert_equal("\000", [0].pack("w"))
assert_equal("\001", [1].pack("w"))
assert_equal("\177", [127].pack("w"))
assert_equal("\201\000", [128].pack("w"))
assert_equal("\377\177", [0x3fff].pack("w"))
assert_equal("\201\200\000", [0x4000].pack("w"))
assert_equal("\203\377\377\377\177", [0x3fffffff].pack("w"))
assert_equal("\204\200\200\200\000", [0x40000000].pack("w"))
assert_equal("\217\377\377\377\177", [0xffffffff].pack("w"))
assert_equal("\220\200\200\200\000", [0x100000000].pack("w"))
assert_raise(ArgumentError) { [-1].pack("w") }
assert_equal([0], "\000".unpack("w"))
assert_equal([1], "\001".unpack("w"), [1])
assert_equal([127], "\177".unpack("w"), [127])
assert_equal([128], "\201\000".unpack("w"), [128])
assert_equal([0x3fff], "\377\177".unpack("w"), [0x3fff])
assert_equal([0x4000], "\201\200\000".unpack("w"), [0x4000])
assert_equal([0x3fffffff], "\203\377\377\377\177".unpack("w"), [0x3fffffff])
assert_equal([0x40000000], "\204\200\200\200\000".unpack("w"), [0x40000000])
assert_equal([0xffffffff], "\217\377\377\377\177".unpack("w"), [0xffffffff])
assert_equal([0x100000000], "\220\200\200\200\000".unpack("w"), [0x100000000])
end
def test_modify_under_safe4
s = "foo"
assert_raise(SecurityError) do
Thread.new do
$SAFE = 4
s.clear
end.join
end
end
def test_length_too_big
assert_raise(RangeError) { [].pack("C100000000000000000000") }
end
end
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