add tests for bad utf sequences, fix failures

This commit is contained in:
alisdair sullivan 2012-03-28 23:31:07 -07:00
parent 2d2dd5f7c1
commit dc6a026e94
3 changed files with 622 additions and 14 deletions

View file

@ -1041,6 +1041,207 @@ done(Bin, Handler, Stack, Opts) -> ?error([Bin, Handler, Stack, Opts]).
-include_lib("eunit/include/eunit.hrl").
xcode(Bin) -> xcode(Bin, []).
xcode(Bin, Opts) ->
Size = size(Bin),
try jsx:to_term(<<34, Bin:Size/binary, 34>>, Opts)
catch error:badarg -> {error, badarg}
end.
is_bad({error, badarg}) -> true;
is_bad(_) -> false.
bad_utf8_test_() ->
[
{"orphan continuation byte u+0080",
?_assert(is_bad(xcode(<<16#0080>>)))
},
{"orphan continuation byte u+0080 replaced",
?_assertEqual(xcode(<<16#0080>>, [loose_unicode]), <<16#fffd/utf8>>)
},
{"orphan continuation byte u+00bf",
?_assert(is_bad(xcode(<<16#00bf>>)))
},
{"orphan continuation byte u+00bf replaced",
?_assertEqual(xcode(<<16#00bf>>, [loose_unicode]), <<16#fffd/utf8>>)
},
{"2 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 2))/binary>>)))
},
{"2 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 2))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 2)
)
},
{"3 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 3))/binary>>)))
},
{"3 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 3))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 3)
)
},
{"4 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 4))/binary>>)))
},
{"4 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 4))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 4)
)
},
{"5 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 5))/binary>>)))
},
{"5 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 5))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 5)
)
},
{"6 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 6))/binary>>)))
},
{"6 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 6))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 6)
)
},
{"all continuation bytes",
?_assert(is_bad(xcode(<<(list_to_binary(lists:seq(16#0080, 16#00bf)))/binary>>)))
},
{"all continuation bytes replaced",
?_assertEqual(
xcode(<<(list_to_binary(lists:seq(16#0080, 16#00bf)))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, length(lists:seq(16#0080, 16#00bf)))
)
},
{"lonely start byte",
?_assert(is_bad(xcode(<<16#00c0>>)))
},
{"lonely start byte replaced",
?_assertEqual(
xcode(<<16#00c0>>, [loose_unicode]),
<<16#fffd/utf8>>
)
},
{"lonely start bytes (2 byte)",
?_assert(is_bad(xcode(<<16#00c0, 32, 16#00df>>)))
},
{"lonely start bytes (2 byte) replaced",
?_assertEqual(
xcode(<<16#00c0, 32, 16#00df>>, [loose_unicode]),
<<16#fffd/utf8, 32, 16#fffd/utf8>>
)
},
{"lonely start bytes (3 byte)",
?_assert(is_bad(xcode(<<16#00e0, 32, 16#00ef>>)))
},
{"lonely start bytes (3 byte) replaced",
?_assertEqual(
xcode(<<16#00e0, 32, 16#00ef>>, [loose_unicode]),
<<16#fffd/utf8, 32, 16#fffd/utf8>>
)
},
{"lonely start bytes (4 byte)",
?_assert(is_bad(xcode(<<16#00f0, 32, 16#00f7>>)))
},
{"lonely start bytes (4 byte) replaced",
?_assertEqual(
xcode(<<16#00f0, 32, 16#00f7>>, [loose_unicode]),
<<16#fffd/utf8, 32, 16#fffd/utf8>>
)
},
{"missing continuation byte (3 byte)",
?_assert(is_bad(xcode(<<224, 160, 32>>)))
},
{"missing continuation byte (3 byte) replaced",
?_assertEqual(
xcode(<<224, 160, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"missing continuation byte (4 byte missing one)",
?_assert(is_bad(xcode(<<240, 144, 128, 32>>)))
},
{"missing continuation byte2 (4 byte missing one) replaced",
?_assertEqual(
xcode(<<240, 144, 128, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"missing continuation byte (4 byte missing two)",
?_assert(is_bad(xcode(<<240, 144, 32>>)))
},
{"missing continuation byte2 (4 byte missing two) replaced",
?_assertEqual(
xcode(<<240, 144, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"overlong encoding of u+002f (2 byte)",
?_assert(is_bad(xcode(<<16#c0, 16#af, 32>>)))
},
{"overlong encoding of u+002f (2 byte) replaced",
?_assertEqual(
xcode(<<16#c0, 16#af, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"overlong encoding of u+002f (3 byte)",
?_assert(is_bad(xcode(<<16#e0, 16#80, 16#af, 32>>)))
},
{"overlong encoding of u+002f (3 byte) replaced",
?_assertEqual(
xcode(<<16#e0, 16#80, 16#af, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"overlong encoding of u+002f (4 byte)",
?_assert(is_bad(xcode(<<16#f0, 16#80, 16#80, 16#af, 32>>)))
},
{"overlong encoding of u+002f (4 byte) replaced",
?_assertEqual(
xcode(<<16#f0, 16#80, 16#80, 16#af, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"highest overlong 2 byte sequence",
?_assert(is_bad(xcode(<<16#c1, 16#bf, 32>>)))
},
{"highest overlong 2 byte sequence replaced",
?_assertEqual(
xcode(<<16#c1, 16#bf, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"highest overlong 3 byte sequence",
?_assert(is_bad(xcode(<<16#e0, 16#9f, 16#bf, 32>>)))
},
{"highest overlong 3 byte sequence replaced",
?_assertEqual(
xcode(<<16#e0, 16#9f, 16#bf, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"highest overlong 4 byte sequence",
?_assert(is_bad(xcode(<<16#f0, 16#8f, 16#bf, 16#bf, 32>>)))
},
{"highest overlong 4 byte sequence replaced",
?_assertEqual(
xcode(<<16#f0, 16#8f, 16#bf, 16#bf, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
}
].
comments_test_() ->
[
{"preceeding // comment", ?_assertEqual(

View file

@ -174,6 +174,208 @@ strip_continuations(Bin, _, N) -> {Bin, N}.
-ifdef(TEST).
-include_lib("eunit/include/eunit.hrl").
xcode(Bin) -> xcode(Bin, #opts{}).
xcode(Bin, [loose_unicode]) -> xcode(Bin, #opts{loose_unicode=true});
xcode(Bin, Opts) ->
try clean_string(Bin, Opts)
catch error:badarg -> {error, badarg}
end.
is_bad({error, badarg}) -> true;
is_bad(_) -> false.
bad_utf8_test_() ->
[
{"orphan continuation byte u+0080",
?_assert(is_bad(xcode(<<16#0080>>)))
},
{"orphan continuation byte u+0080 replaced",
?_assertEqual(xcode(<<16#0080>>, [loose_unicode]), <<16#fffd/utf8>>)
},
{"orphan continuation byte u+00bf",
?_assert(is_bad(xcode(<<16#00bf>>)))
},
{"orphan continuation byte u+00bf replaced",
?_assertEqual(xcode(<<16#00bf>>, [loose_unicode]), <<16#fffd/utf8>>)
},
{"2 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 2))/binary>>)))
},
{"2 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 2))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 2)
)
},
{"3 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 3))/binary>>)))
},
{"3 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 3))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 3)
)
},
{"4 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 4))/binary>>)))
},
{"4 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 4))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 4)
)
},
{"5 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 5))/binary>>)))
},
{"5 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 5))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 5)
)
},
{"6 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 6))/binary>>)))
},
{"6 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 6))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 6)
)
},
{"all continuation bytes",
?_assert(is_bad(xcode(<<(list_to_binary(lists:seq(16#0080, 16#00bf)))/binary>>)))
},
{"all continuation bytes replaced",
?_assertEqual(
xcode(<<(list_to_binary(lists:seq(16#0080, 16#00bf)))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, length(lists:seq(16#0080, 16#00bf)))
)
},
{"lonely start byte",
?_assert(is_bad(xcode(<<16#00c0>>)))
},
{"lonely start byte replaced",
?_assertEqual(
xcode(<<16#00c0>>, [loose_unicode]),
<<16#fffd/utf8>>
)
},
{"lonely start bytes (2 byte)",
?_assert(is_bad(xcode(<<16#00c0, 32, 16#00df>>)))
},
{"lonely start bytes (2 byte) replaced",
?_assertEqual(
xcode(<<16#00c0, 32, 16#00df>>, [loose_unicode]),
<<16#fffd/utf8, 32, 16#fffd/utf8>>
)
},
{"lonely start bytes (3 byte)",
?_assert(is_bad(xcode(<<16#00e0, 32, 16#00ef>>)))
},
{"lonely start bytes (3 byte) replaced",
?_assertEqual(
xcode(<<16#00e0, 32, 16#00ef>>, [loose_unicode]),
<<16#fffd/utf8, 32, 16#fffd/utf8>>
)
},
{"lonely start bytes (4 byte)",
?_assert(is_bad(xcode(<<16#00f0, 32, 16#00f7>>)))
},
{"lonely start bytes (4 byte) replaced",
?_assertEqual(
xcode(<<16#00f0, 32, 16#00f7>>, [loose_unicode]),
<<16#fffd/utf8, 32, 16#fffd/utf8>>
)
},
{"missing continuation byte (3 byte)",
?_assert(is_bad(xcode(<<224, 160, 32>>)))
},
{"missing continuation byte (3 byte) replaced",
?_assertEqual(
xcode(<<224, 160, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"missing continuation byte (4 byte missing one)",
?_assert(is_bad(xcode(<<240, 144, 128, 32>>)))
},
{"missing continuation byte2 (4 byte missing one) replaced",
?_assertEqual(
xcode(<<240, 144, 128, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"missing continuation byte (4 byte missing two)",
?_assert(is_bad(xcode(<<240, 144, 32>>)))
},
{"missing continuation byte2 (4 byte missing two) replaced",
?_assertEqual(
xcode(<<240, 144, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"overlong encoding of u+002f (2 byte)",
?_assert(is_bad(xcode(<<16#c0, 16#af, 32>>)))
},
{"overlong encoding of u+002f (2 byte) replaced",
?_assertEqual(
xcode(<<16#c0, 16#af, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"overlong encoding of u+002f (3 byte)",
?_assert(is_bad(xcode(<<16#e0, 16#80, 16#af, 32>>)))
},
{"overlong encoding of u+002f (3 byte) replaced",
?_assertEqual(
xcode(<<16#e0, 16#80, 16#af, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"overlong encoding of u+002f (4 byte)",
?_assert(is_bad(xcode(<<16#f0, 16#80, 16#80, 16#af, 32>>)))
},
{"overlong encoding of u+002f (4 byte) replaced",
?_assertEqual(
xcode(<<16#f0, 16#80, 16#80, 16#af, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"highest overlong 2 byte sequence",
?_assert(is_bad(xcode(<<16#c1, 16#bf, 32>>)))
},
{"highest overlong 2 byte sequence replaced",
?_assertEqual(
xcode(<<16#c1, 16#bf, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"highest overlong 3 byte sequence",
?_assert(is_bad(xcode(<<16#e0, 16#9f, 16#bf, 32>>)))
},
{"highest overlong 3 byte sequence replaced",
?_assertEqual(
xcode(<<16#e0, 16#9f, 16#bf, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"highest overlong 4 byte sequence",
?_assert(is_bad(xcode(<<16#f0, 16#8f, 16#bf, 16#bf, 32>>)))
},
{"highest overlong 4 byte sequence replaced",
?_assertEqual(
xcode(<<16#f0, 16#8f, 16#bf, 16#bf, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
}
].
encode(Term) -> (encoder(jsx, [], []))(Term).
encode(Term, Opts) ->
@ -303,14 +505,6 @@ extended_noncharacters_test_() ->
}
].
malformed_test_() ->
[
{"malformed codepoint with 1 byte", ?_assertError(badarg, encode(<<128>>))},
{"malformed codepoint with 2 bytes", ?_assertError(badarg, encode(<<128, 192>>))},
{"malformed codepoint with 3 bytes", ?_assertError(badarg, encode(<<128, 192, 192>>))},
{"malformed codepoint with 4 bytes", ?_assertError(badarg, encode(<<128, 192, 192, 192>>))}
].
check_bad(List) ->
lists:dropwhile(fun({_, {error, badjson}}) -> true ; (_) -> false end,

View file

@ -302,14 +302,26 @@ json_escape(Str, Opts, L, Len) when L < Len ->
false -> erlang:error(badarg, [Str, Opts])
end;
<<H:L/binary, X, T/binary>> when X >= 192, X =< 223 ->
{Rest, Stripped} = strip_continuations(T, 1, 0),
json_escape(<<H:L/binary, 16#fffd/utf8, Rest/binary>>, Opts, L + 3, Len + 2 - Stripped);
case Opts#opts.loose_unicode of
true ->
{Rest, Stripped} = strip_continuations(T, 1, 0),
json_escape(<<H:L/binary, 16#fffd/utf8, Rest/binary>>, Opts, L + 3, Len + 2 - Stripped);
false -> erlang:error(badarg, [Str, Opts])
end;
<<H:L/binary, X, T/binary>> when X >= 224, X =< 239 ->
{Rest, Stripped} = strip_continuations(T, 2, 0),
json_escape(<<H:L/binary, 16#fffd/utf8, Rest/binary>>, Opts, L + 3, Len + 2 - Stripped);
case Opts#opts.loose_unicode of
true ->
{Rest, Stripped} = strip_continuations(T, 2, 0),
json_escape(<<H:L/binary, 16#fffd/utf8, Rest/binary>>, Opts, L + 3, Len + 2 - Stripped);
false -> erlang:error(badarg, [Str, Opts])
end;
<<H:L/binary, X, T/binary>> when X >= 240, X =< 247 ->
{Rest, Stripped} = strip_continuations(T, 3, 0),
json_escape(<<H:L/binary, 16#fffd/utf8, Rest/binary>>, Opts, L + 3, Len + 2 - Stripped);
case Opts#opts.loose_unicode of
true ->
{Rest, Stripped} = strip_continuations(T, 3, 0),
json_escape(<<H:L/binary, 16#fffd/utf8, Rest/binary>>, Opts, L + 3, Len + 2 - Stripped);
false -> erlang:error(badarg, [Str, Opts])
end;
<<H:L/binary, _, T/binary>> ->
case Opts#opts.loose_unicode of
true -> json_escape(<<H/binary, 16#fffd/utf8, T/binary>>, Opts, L + 3, Len + 2);
@ -347,6 +359,207 @@ strip_continuations(Bin, _, N) -> {Bin, N}.
-include_lib("eunit/include/eunit.hrl").
xcode(Bin) -> xcode(Bin, #opts{}).
xcode(Bin, [loose_unicode]) -> xcode(Bin, #opts{loose_unicode=true});
xcode(Bin, Opts) ->
try json_escape(Bin, Opts)
catch error:badarg -> {error, badarg}
end.
is_bad({error, badarg}) -> true;
is_bad(_) -> false.
bad_utf8_test_() ->
[
{"orphan continuation byte u+0080",
?_assert(is_bad(xcode(<<16#0080>>)))
},
{"orphan continuation byte u+0080 replaced",
?_assertEqual(xcode(<<16#0080>>, [loose_unicode]), <<16#fffd/utf8>>)
},
{"orphan continuation byte u+00bf",
?_assert(is_bad(xcode(<<16#00bf>>)))
},
{"orphan continuation byte u+00bf replaced",
?_assertEqual(xcode(<<16#00bf>>, [loose_unicode]), <<16#fffd/utf8>>)
},
{"2 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 2))/binary>>)))
},
{"2 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 2))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 2)
)
},
{"3 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 3))/binary>>)))
},
{"3 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 3))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 3)
)
},
{"4 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 4))/binary>>)))
},
{"4 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 4))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 4)
)
},
{"5 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 5))/binary>>)))
},
{"5 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 5))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 5)
)
},
{"6 continuation bytes",
?_assert(is_bad(xcode(<<(binary:copy(<<16#0080>>, 6))/binary>>)))
},
{"6 continuation bytes replaced",
?_assertEqual(
xcode(<<(binary:copy(<<16#0080>>, 6))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, 6)
)
},
{"all continuation bytes",
?_assert(is_bad(xcode(<<(list_to_binary(lists:seq(16#0080, 16#00bf)))/binary>>)))
},
{"all continuation bytes replaced",
?_assertEqual(
xcode(<<(list_to_binary(lists:seq(16#0080, 16#00bf)))/binary>>, [loose_unicode]),
binary:copy(<<16#fffd/utf8>>, length(lists:seq(16#0080, 16#00bf)))
)
},
{"lonely start byte",
?_assert(is_bad(xcode(<<16#00c0>>)))
},
{"lonely start byte replaced",
?_assertEqual(
xcode(<<16#00c0>>, [loose_unicode]),
<<16#fffd/utf8>>
)
},
{"lonely start bytes (2 byte)",
?_assert(is_bad(xcode(<<16#00c0, 32, 16#00df>>)))
},
{"lonely start bytes (2 byte) replaced",
?_assertEqual(
xcode(<<16#00c0, 32, 16#00df>>, [loose_unicode]),
<<16#fffd/utf8, 32, 16#fffd/utf8>>
)
},
{"lonely start bytes (3 byte)",
?_assert(is_bad(xcode(<<16#00e0, 32, 16#00ef>>)))
},
{"lonely start bytes (3 byte) replaced",
?_assertEqual(
xcode(<<16#00e0, 32, 16#00ef>>, [loose_unicode]),
<<16#fffd/utf8, 32, 16#fffd/utf8>>
)
},
{"lonely start bytes (4 byte)",
?_assert(is_bad(xcode(<<16#00f0, 32, 16#00f7>>)))
},
{"lonely start bytes (4 byte) replaced",
?_assertEqual(
xcode(<<16#00f0, 32, 16#00f7>>, [loose_unicode]),
<<16#fffd/utf8, 32, 16#fffd/utf8>>
)
},
{"missing continuation byte (3 byte)",
?_assert(is_bad(xcode(<<224, 160, 32>>)))
},
{"missing continuation byte (3 byte) replaced",
?_assertEqual(
xcode(<<224, 160, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"missing continuation byte (4 byte missing one)",
?_assert(is_bad(xcode(<<240, 144, 128, 32>>)))
},
{"missing continuation byte2 (4 byte missing one) replaced",
?_assertEqual(
xcode(<<240, 144, 128, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"missing continuation byte (4 byte missing two)",
?_assert(is_bad(xcode(<<240, 144, 32>>)))
},
{"missing continuation byte2 (4 byte missing two) replaced",
?_assertEqual(
xcode(<<240, 144, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"overlong encoding of u+002f (2 byte)",
?_assert(is_bad(xcode(<<16#c0, 16#af, 32>>)))
},
{"overlong encoding of u+002f (2 byte) replaced",
?_assertEqual(
xcode(<<16#c0, 16#af, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"overlong encoding of u+002f (3 byte)",
?_assert(is_bad(xcode(<<16#e0, 16#80, 16#af, 32>>)))
},
{"overlong encoding of u+002f (3 byte) replaced",
?_assertEqual(
xcode(<<16#e0, 16#80, 16#af, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"overlong encoding of u+002f (4 byte)",
?_assert(is_bad(xcode(<<16#f0, 16#80, 16#80, 16#af, 32>>)))
},
{"overlong encoding of u+002f (4 byte) replaced",
?_assertEqual(
xcode(<<16#f0, 16#80, 16#80, 16#af, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"highest overlong 2 byte sequence",
?_assert(is_bad(xcode(<<16#c1, 16#bf, 32>>)))
},
{"highest overlong 2 byte sequence replaced",
?_assertEqual(
xcode(<<16#c1, 16#bf, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"highest overlong 3 byte sequence",
?_assert(is_bad(xcode(<<16#e0, 16#9f, 16#bf, 32>>)))
},
{"highest overlong 3 byte sequence replaced",
?_assertEqual(
xcode(<<16#e0, 16#9f, 16#bf, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
},
{"highest overlong 4 byte sequence",
?_assert(is_bad(xcode(<<16#f0, 16#8f, 16#bf, 16#bf, 32>>)))
},
{"highest overlong 4 byte sequence replaced",
?_assertEqual(
xcode(<<16#f0, 16#8f, 16#bf, 16#bf, 32>>, [loose_unicode]),
<<16#fffd/utf8, 32>>
)
}
].
binary_escape_test_() ->
[
{"json string escaping",