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require 'test/unit'
class TestUTF16 < Test::Unit::TestCase
def encdump(str)
d = str.dump
if /\.force_encoding\("[A-Za-z0-9.:_+-]*"\)\z/ =~ d
d
else
"#{d}.force_encoding(#{str.encoding.name.dump})"
end
end
def enccall(recv, meth, *args)
desc = ''
if String === recv
desc << encdump(recv)
else
desc << recv.inspect
end
desc << '.' << meth.to_s
if !args.empty?
desc << '('
args.each_with_index {|a, i|
desc << ',' if 0 < i
if String === a
desc << encdump(a)
else
desc << a.inspect
end
}
desc << ')'
end
result = nil
assert_nothing_raised(desc) {
result = recv.send(meth, *args)
}
result
end
# tests start
def test_utf16be_valid_encoding
s = "\xd8\x00\xd8\x00".force_encoding("utf-16be")
assert_equal(false, s.valid_encoding?, "#{encdump s}.valid_encoding?")
end
def test_strftime
s = "aa".force_encoding("utf-16be")
assert_raise(ArgumentError, "Time.now.strftime(#{encdump s})") { Time.now.strftime(s) }
end
def test_intern
s = "aaaa".force_encoding("utf-16be")
assert_equal(s.encoding, s.intern.to_s.encoding, "#{encdump s}.intern.to_s.encoding")
end
def test_compatible
s1 = "aa".force_encoding("utf-16be")
s2 = "z".force_encoding("us-ascii")
assert_nil(Encoding.compatible?(s1, s2), "Encoding.compatible?(#{encdump s1}, #{encdump s2})")
end
def test_end_with
s1 = "ab".force_encoding("utf-16be")
s2 = "b".force_encoding("utf-16be")
assert_equal(false, s1.end_with?(s2), "#{encdump s1}.end_with?(#{encdump s2})")
end
def test_hex
s1 = "f\0f\0".force_encoding("utf-16le")
assert_equal(255, s1.hex, "#{encdump s1}.hex")
end
def test_count
s1 = "aa".force_encoding("utf-16be")
s2 = "aa"
assert_raise(ArgumentError, "#{encdump s1}.count(#{encdump s2})") {
s1.count(s2)
}
end
def test_plus
s1 = "a".force_encoding("us-ascii")
s2 = "aa".force_encoding("utf-16be")
assert_raise(ArgumentError, "#{encdump s1} + #{encdump s2}") {
s1 + s2
}
end
def test_encoding_find
assert_raise(ArgumentError) {
Encoding.find("utf-8".force_encoding("utf-16be"))
}
end
def test_interpolation
s = "aa".force_encoding("utf-16be")
assert_raise(ArgumentError, "\"a\#{#{encdump s}}\"") {
"a#{s}"
}
end
def test_slice!
enccall("aa".force_encoding("UTF-16BE"), :slice!, -1)
end
end
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