assume all datetimes are UTC time and add timezone designator to

generated iso8601 strings

README.md

@@ -257,8 +257,7 @@ see below                       | `datetime()`
 
     erlang datetime tuples (`{{Year, Month, Day}, {Hour, Min, Sec}}`) as returned
     from `erlang:localtime/0` are automatically encoded as [iso8601][iso8601]
-    strings. no conversion is attempted of json [iso8601][iso8601] strings in
+    strings and are assumed to be UTC time. no conversion is attempted of json [iso8601][iso8601] strings in decoded json
-    decoded json
 
 
 ### incomplete input ###

src/jsx_encoder.erl

@@ -54,6 +54,9 @@ encode(Term, EntryPoint) -> encode_(Term, EntryPoint).
 encode_([], _EntryPoint) -> [start_array, end_array];
 encode_([{}], _EntryPoint) -> [start_object, end_object];
 
+%% datetime special case
+encode_([{{_,_,_},{_,_,_}} = DateTime|Rest], EntryPoint) ->
+    [start_array] ++ [DateTime] ++ unhitch(Rest, EntryPoint);
 encode_([{_, _}|_] = Term, EntryPoint) ->
     [start_object] ++ unzip(Term, EntryPoint);
 encode_(Term, EntryPoint) when is_list(Term) ->

src/jsx_parser.erl

@@ -112,7 +112,7 @@ value([{raw, Raw}|Tokens], Handler, Stack, Config) when is_binary(Raw) ->
 value([{{Year, Month, Day}, {Hour, Min, Sec}}|Tokens], Handler, Stack, Config)
 when is_integer(Year), is_integer(Month), is_integer(Day), is_integer(Hour), is_integer(Min), is_integer(Sec) ->
     value([{string, unicode:characters_to_binary(io_lib:format(
-            "~4.10.0B-~2.10.0B-~2.10.0BT~2.10.0B:~2.10.0B:~2.10.0B",
+            "~4.10.0B-~2.10.0B-~2.10.0BT~2.10.0B:~2.10.0B:~2.10.0BZ",
             [Year, Month, Day, Hour, Min, Sec]
         ))}|Tokens],
         Handler,
@@ -1145,7 +1145,7 @@ fix_key_test_() ->
 datetime_test_() ->
     [
         {"datetime", ?_assertEqual(
-            [start_array, {string, <<"2014-08-13T23:12:34">>}, end_array, end_json],
+            [start_array, {string, <<"2014-08-13T23:12:34Z">>}, end_array, end_json],
             parse([start_array, {{2014,08,13},{23,12,34}}, end_array, end_json], [])
         )}
     ].