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tests for jsx_encoder string escapes

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This commit is contained in:
alisdair sullivan 2011-08-15 19:35:56 -07:00
parent d33474d29d
commit 5cf8173bd5
1 changed files with 46 additions and 7 deletions
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53
src/jsx_encoder.erl
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@ -194,11 +194,14 @@ json_escape([$\t|Rest], Opts, Acc) ->
json_escape(Rest, Opts, [$t, $\\] ++ Acc);
%% other control characters
json_escape(<<C/utf8, Rest/binary>>, Opts, Acc) when C >= 0, C < $\s ->
json_escape(Rest, Opts, <<Acc/binary, (json_escape_sequence(C))/binary>>);
json_escape(Rest,
Opts,
<<Acc/binary,
(unicode:characters_to_binary(json_escape_sequence(C)))/binary
>>
);
json_escape([C|Rest], Opts, Acc) when C >= 0, C < $\s ->
json_escape(Rest, Opts,
lists:reverse(unicode:characters_to_list(json_escape_sequence(C)))
++ [Acc]);
json_escape(Rest, Opts, lists:reverse(json_escape_sequence(C)) ++ Acc);
%% escape forward slashes -- optionally -- to faciliate microsoft's retarded
%% date format
json_escape(<<$/, Rest/binary>>, Opts=#opts{escape_forward_slash=true}, Acc) ->
@ -208,7 +211,14 @@ json_escape([$/|Rest], Opts=#opts{escape_forward_slash=true}, Acc) ->
%% escape u+2028 and u+2029 to avoid problems with jsonp
json_escape(<<C/utf8, Rest/binary>>, Opts, Acc)
when C == 16#2028; C == 16#2029 ->
json_escape(Rest, Opts, <<Acc/binary, (json_escape_sequence(C))/binary>>);
json_escape(Rest,
Opts,
<<Acc/binary,
(unicode:characters_to_binary(json_escape_sequence(C)))/binary
>>
);
json_escape([C|Rest], Opts, Acc) when C =:= 16#2028; C =:= 16#2029 ->
json_escape(Rest, Opts, lists:reverse(json_escape_sequence(C)) ++ Acc);
%% any other legal codepoint
json_escape(<<C/utf8, Rest/binary>>, Opts, Acc) ->
json_escape(Rest, Opts, <<Acc/binary, C/utf8>>);
@ -225,7 +235,7 @@ json_escape(_, _, _) ->
%% convert a codepoint to it's \uXXXX equiv.
json_escape_sequence(X) ->
<<A:4, B:4, C:4, D:4>> = <<X:16>>,
<<$\\, $u, (to_hex(A)), (to_hex(B)), (to_hex(C)), (to_hex(D))>>.
[$\\, $u, (to_hex(A)), (to_hex(B)), (to_hex(C)), (to_hex(D))].
to_hex(15) -> $f;
@ -331,7 +341,7 @@ encode_test_() ->
].
escape_test_() ->
binary_escape_test_() ->
[
{"json string escaping",
?_assert(json_escape(
@ -359,4 +369,33 @@ escape_test_() ->
}
].
string_escape_test_() ->
[
{"json string escaping",
?_assert(json_escape(
"\"\\\b\f\n\r\t", #opts{}
) =:= "\\\"\\\\\\b\\f\\n\\r\\t"
)
},
{"json string hex escape",
?_assert(json_escape(
[1, 2, 3, 11, 26, 30, 31], #opts{}
) =:= "\\u0001\\u0002\\u0003\\u000b\\u001a\\u001e\\u001f"
)
},
{"jsonp protection",
?_assert(json_escape(
[16#2028, 16#2029], #opts{}
) =:= "\\u2028\\u2029"
)
},
{"microsoft i hate your date format",
?_assert(json_escape("/Date(1303502009425)/",
#opts{escape_forward_slash=true}
) =:= "\\/Date(1303502009425)\\/"
)
}
].
-endif.