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backport from 1.9

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@7259 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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gotoyuzo 2004-11-13 14:07:13 +00:00
parent d545321973
commit 66d97eae55
1 changed files with 38 additions and 0 deletions
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38
test/ruby/test_pack.rb
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@ -16,4 +16,42 @@ class TestPack < Test::Unit::TestCase
$x = [-1073741825]
assert_equal($x, $x.pack("q").unpack("q"))
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_raises(RangeError) { [-0x40000001].pack("U") }
assert_raises(RangeError) { [-0x40000000].pack("U") }
assert_raises(RangeError) { [-1].pack("U") }
assert_equal "\000", [0].pack("U")
assert_equal "\374\277\277\277\277\277", [0x3fffffff].pack("U")
assert_equal "\375\200\200\200\200\200", [0x40000000].pack("U")
assert_equal "\375\277\277\277\277\277", [0x7fffffff].pack("U")
assert_raises(RangeError) { [0x80000000].pack("U") }
assert_raises(RangeError) { [0x100000000].pack("U") }
end
end