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neovim/test/functional/eval/json_functions_spec.lua
ZyX bda0165514 eval/encode: Make sure that encoder can encode NULL variables 
Adds two undocumented v: variables: _null_list and _null_dict because I do not 
know a reproducible way to get such lists (though I think I heard about this) 
and dictionaries (do not remember hearing about them). NULL strings are obtained 
using $XXX_UNEXISTENT_VAR_XXX.

Fixes crash in json_encode($XXX_UNEXISTENT_VAR_XXX). Other added tests worked 
fine before this commit.
2016-04-18 02:48:20 +03:00

800 lines
33 KiB
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local helpers = require('test.functional.helpers')
local clear = helpers.clear
local funcs = helpers.funcs
local meths = helpers.meths
local eq = helpers.eq
local eval = helpers.eval
local execute = helpers.execute
local exc_exec = helpers.exc_exec
local redir_exec = helpers.redir_exec
describe('json_decode() function', function()
local restart = function(cmd)
clear(cmd)
execute('language C')
execute([[
function Eq(exp, act)
let act = a:act
let exp = a:exp
if type(exp) != type(act)
return 0
endif
if type(exp) == type({})
if sort(keys(exp)) !=# sort(keys(act))
return 0
endif
if sort(keys(exp)) ==# ['_TYPE', '_VAL']
let exp_typ = v:msgpack_types[exp._TYPE]
let act_typ = act._TYPE
if exp_typ isnot act_typ
return 0
endif
return Eq(exp._VAL, act._VAL)
else
return empty(filter(copy(exp), '!Eq(v:val, act[v:key])'))
endif
else
if type(exp) == type([])
if len(exp) != len(act)
return 0
endif
return empty(filter(copy(exp), '!Eq(v:val, act[v:key])'))
endif
return exp ==# act
endif
return 1
endfunction
]])
execute([[
function EvalEq(exp, act_expr)
let act = eval(a:act_expr)
if Eq(a:exp, act)
return 1
else
return string(act)
endif
endfunction
]])
end
before_each(restart)
local speq = function(expected, actual_expr)
eq(1, funcs.EvalEq(expected, actual_expr))
end
it('accepts readfile()-style list', function()
eq({Test=1}, funcs.json_decode({
'{',
'\t"Test": 1',
'}',
}))
end)
it('accepts strings with newlines', function()
eq({Test=1}, funcs.json_decode([[
{
"Test": 1
}
]]))
end)
it('parses null, true, false', function()
eq(nil, funcs.json_decode('null'))
eq(true, funcs.json_decode('true'))
eq(false, funcs.json_decode('false'))
end)
it('fails to parse incomplete null, true, false', function()
eq('Vim(call):E474: Expected null: n',
exc_exec('call json_decode("n")'))
eq('Vim(call):E474: Expected null: nu',
exc_exec('call json_decode("nu")'))
eq('Vim(call):E474: Expected null: nul',
exc_exec('call json_decode("nul")'))
eq('Vim(call):E474: Expected null: nul\n\t',
exc_exec('call json_decode("nul\\n\\t")'))
eq('Vim(call):E474: Expected true: t',
exc_exec('call json_decode("t")'))
eq('Vim(call):E474: Expected true: tr',
exc_exec('call json_decode("tr")'))
eq('Vim(call):E474: Expected true: tru',
exc_exec('call json_decode("tru")'))
eq('Vim(call):E474: Expected true: tru\t\n',
exc_exec('call json_decode("tru\\t\\n")'))
eq('Vim(call):E474: Expected false: f',
exc_exec('call json_decode("f")'))
eq('Vim(call):E474: Expected false: fa',
exc_exec('call json_decode("fa")'))
eq('Vim(call):E474: Expected false: fal',
exc_exec('call json_decode("fal")'))
eq('Vim(call):E474: Expected false: fal <',
exc_exec('call json_decode(" fal <")'))
eq('Vim(call):E474: Expected false: fals',
exc_exec('call json_decode("fals")'))
end)
it('parses integer numbers', function()
eq(100000, funcs.json_decode('100000'))
eq(-100000, funcs.json_decode('-100000'))
eq(100000, funcs.json_decode(' 100000 '))
eq(-100000, funcs.json_decode(' -100000 '))
eq(0, funcs.json_decode('0'))
eq(0, funcs.json_decode('-0'))
end)
it('fails to parse +numbers and .number', function()
eq('Vim(call):E474: Unidentified byte: +1000',
exc_exec('call json_decode("+1000")'))
eq('Vim(call):E474: Unidentified byte: .1000',
exc_exec('call json_decode(".1000")'))
end)
it('fails to parse numbers with leading zeroes', function()
eq('Vim(call):E474: Leading zeroes are not allowed: 00.1',
exc_exec('call json_decode("00.1")'))
eq('Vim(call):E474: Leading zeroes are not allowed: 01',
exc_exec('call json_decode("01")'))
eq('Vim(call):E474: Leading zeroes are not allowed: -01',
exc_exec('call json_decode("-01")'))
eq('Vim(call):E474: Leading zeroes are not allowed: -001.0',
exc_exec('call json_decode("-001.0")'))
end)
it('fails to parse incomplete numbers', function()
eq('Vim(call):E474: Missing number after minus sign: -.1',
exc_exec('call json_decode("-.1")'))
eq('Vim(call):E474: Missing number after minus sign: -',
exc_exec('call json_decode("-")'))
eq('Vim(call):E474: Missing number after decimal dot: -1.',
exc_exec('call json_decode("-1.")'))
eq('Vim(call):E474: Missing number after decimal dot: 0.',
exc_exec('call json_decode("0.")'))
eq('Vim(call):E474: Missing exponent: 0.0e',
exc_exec('call json_decode("0.0e")'))
eq('Vim(call):E474: Missing exponent: 0.0e+',
exc_exec('call json_decode("0.0e+")'))
eq('Vim(call):E474: Missing exponent: 0.0e-',
exc_exec('call json_decode("0.0e-")'))
eq('Vim(call):E474: Missing exponent: 0.0e-',
exc_exec('call json_decode("0.0e-")'))
eq('Vim(call):E474: Missing number after decimal dot: 1.e5',
exc_exec('call json_decode("1.e5")'))
eq('Vim(call):E474: Missing number after decimal dot: 1.e+5',
exc_exec('call json_decode("1.e+5")'))
eq('Vim(call):E474: Missing number after decimal dot: 1.e+',
exc_exec('call json_decode("1.e+")'))
end)
it('parses floating-point numbers', function()
eq('100000.0', eval('string(json_decode("100000.0"))'))
eq(100000.5, funcs.json_decode('100000.5'))
eq(-100000.5, funcs.json_decode('-100000.5'))
eq(-100000.5e50, funcs.json_decode('-100000.5e50'))
eq(100000.5e50, funcs.json_decode('100000.5e50'))
eq(100000.5e50, funcs.json_decode('100000.5e+50'))
eq(-100000.5e-50, funcs.json_decode('-100000.5e-50'))
eq(100000.5e-50, funcs.json_decode('100000.5e-50'))
eq(100000e-50, funcs.json_decode('100000e-50'))
eq(0.5, funcs.json_decode('0.5'))
eq(0.005, funcs.json_decode('0.005'))
eq(0.005, funcs.json_decode('0.00500'))
eq(0.5, funcs.json_decode('0.00500e+002'))
eq(0.00005, funcs.json_decode('0.00500e-002'))
eq(-0.0, funcs.json_decode('-0.0'))
eq(-0.0, funcs.json_decode('-0.0e0'))
eq(-0.0, funcs.json_decode('-0.0e+0'))
eq(-0.0, funcs.json_decode('-0.0e-0'))
eq(-0.0, funcs.json_decode('-0e-0'))
eq(-0.0, funcs.json_decode('-0e-2'))
eq(-0.0, funcs.json_decode('-0e+2'))
eq(0.0, funcs.json_decode('0.0'))
eq(0.0, funcs.json_decode('0.0e0'))
eq(0.0, funcs.json_decode('0.0e+0'))
eq(0.0, funcs.json_decode('0.0e-0'))
eq(0.0, funcs.json_decode('0e-0'))
eq(0.0, funcs.json_decode('0e-2'))
eq(0.0, funcs.json_decode('0e+2'))
end)
it('fails to parse numbers with spaces inside', function()
eq('Vim(call):E474: Missing number after minus sign: - 1000',
exc_exec('call json_decode("- 1000")'))
eq('Vim(call):E474: Missing number after decimal dot: 0. ',
exc_exec('call json_decode("0. ")'))
eq('Vim(call):E474: Missing number after decimal dot: 0. 0',
exc_exec('call json_decode("0. 0")'))
eq('Vim(call):E474: Missing exponent: 0.0e 1',
exc_exec('call json_decode("0.0e 1")'))
eq('Vim(call):E474: Missing exponent: 0.0e+ 1',
exc_exec('call json_decode("0.0e+ 1")'))
eq('Vim(call):E474: Missing exponent: 0.0e- 1',
exc_exec('call json_decode("0.0e- 1")'))
end)
it('fails to parse "," and ":"', function()
eq('Vim(call):E474: Comma not inside container: , ',
exc_exec('call json_decode(" , ")'))
eq('Vim(call):E474: Colon not inside container: : ',
exc_exec('call json_decode(" : ")'))
end)
it('parses empty containers', function()
eq({}, funcs.json_decode('[]'))
eq('[]', eval('string(json_decode("[]"))'))
end)
it('fails to parse "[" and "{"', function()
eq('Vim(call):E474: Unexpected end of input: {',
exc_exec('call json_decode("{")'))
eq('Vim(call):E474: Unexpected end of input: [',
exc_exec('call json_decode("[")'))
end)
it('fails to parse "}" and "]"', function()
eq('Vim(call):E474: No container to close: ]',
exc_exec('call json_decode("]")'))
eq('Vim(call):E474: No container to close: }',
exc_exec('call json_decode("}")'))
end)
it('fails to parse containers which are closed by different brackets',
function()
eq('Vim(call):E474: Closing dictionary with square bracket: ]',
exc_exec('call json_decode("{]")'))
eq('Vim(call):E474: Closing list with curly bracket: }',
exc_exec('call json_decode("[}")'))
end)
it('fails to parse concat inside container', function()
eq('Vim(call):E474: Expected comma before list item: []]',
exc_exec('call json_decode("[[][]]")'))
eq('Vim(call):E474: Expected comma before list item: {}]',
exc_exec('call json_decode("[{}{}]")'))
eq('Vim(call):E474: Expected comma before list item: ]',
exc_exec('call json_decode("[1 2]")'))
eq('Vim(call):E474: Expected comma before dictionary key: ": 4}',
exc_exec('call json_decode("{\\"1\\": 2 \\"3\\": 4}")'))
eq('Vim(call):E474: Expected colon before dictionary value: , "3" 4}',
exc_exec('call json_decode("{\\"1\\" 2, \\"3\\" 4}")'))
end)
it('fails to parse containers with leading comma or colon', function()
eq('Vim(call):E474: Leading comma: ,}',
exc_exec('call json_decode("{,}")'))
eq('Vim(call):E474: Leading comma: ,]',
exc_exec('call json_decode("[,]")'))
eq('Vim(call):E474: Using colon not in dictionary: :]',
exc_exec('call json_decode("[:]")'))
eq('Vim(call):E474: Unexpected colon: :}',
exc_exec('call json_decode("{:}")'))
end)
it('fails to parse containers with trailing comma', function()
eq('Vim(call):E474: Trailing comma: ]',
exc_exec('call json_decode("[1,]")'))
eq('Vim(call):E474: Trailing comma: }',
exc_exec('call json_decode("{\\"1\\": 2,}")'))
end)
it('fails to parse dictionaries with missing value', function()
eq('Vim(call):E474: Expected value after colon: }',
exc_exec('call json_decode("{\\"1\\":}")'))
eq('Vim(call):E474: Expected value: }',
exc_exec('call json_decode("{\\"1\\"}")'))
end)
it('fails to parse containers with two commas or colons', function()
eq('Vim(call):E474: Duplicate comma: , "2": 2}',
exc_exec('call json_decode("{\\"1\\": 1,, \\"2\\": 2}")'))
eq('Vim(call):E474: Duplicate comma: , "2", 2]',
exc_exec('call json_decode("[\\"1\\", 1,, \\"2\\", 2]")'))
eq('Vim(call):E474: Duplicate colon: : 2}',
exc_exec('call json_decode("{\\"1\\": 1, \\"2\\":: 2}")'))
eq('Vim(call):E474: Comma after colon: , 2}',
exc_exec('call json_decode("{\\"1\\": 1, \\"2\\":, 2}")'))
eq('Vim(call):E474: Unexpected colon: : "2": 2}',
exc_exec('call json_decode("{\\"1\\": 1,: \\"2\\": 2}")'))
eq('Vim(call):E474: Unexpected colon: :, "2": 2}',
exc_exec('call json_decode("{\\"1\\": 1:, \\"2\\": 2}")'))
end)
it('fails to parse concat of two values', function()
eq('Vim(call):E474: Trailing characters: []',
exc_exec('call json_decode("{}[]")'))
end)
it('parses containers', function()
eq({1}, funcs.json_decode('[1]'))
eq({nil, 1}, funcs.json_decode('[null, 1]'))
eq({['1']=2}, funcs.json_decode('{"1": 2}'))
eq({['1']=2, ['3']={{['4']={['5']={{}, 1}}}}},
funcs.json_decode('{"1": 2, "3": [{"4": {"5": [[], 1]}}]}'))
end)
it('fails to parse incomplete strings', function()
eq('Vim(call):E474: Expected string end: \t"',
exc_exec('call json_decode("\\t\\"")'))
eq('Vim(call):E474: Expected string end: \t"abc',
exc_exec('call json_decode("\\t\\"abc")'))
eq('Vim(call):E474: Unfinished escape sequence: \t"abc\\',
exc_exec('call json_decode("\\t\\"abc\\\\")'))
eq('Vim(call):E474: Unfinished unicode escape sequence: \t"abc\\u',
exc_exec('call json_decode("\\t\\"abc\\\\u")'))
eq('Vim(call):E474: Unfinished unicode escape sequence: \t"abc\\u0',
exc_exec('call json_decode("\\t\\"abc\\\\u0")'))
eq('Vim(call):E474: Unfinished unicode escape sequence: \t"abc\\u00',
exc_exec('call json_decode("\\t\\"abc\\\\u00")'))
eq('Vim(call):E474: Unfinished unicode escape sequence: \t"abc\\u000',
exc_exec('call json_decode("\\t\\"abc\\\\u000")'))
eq('Vim(call):E474: Expected four hex digits after \\u: \\u" ',
exc_exec('call json_decode("\\t\\"abc\\\\u\\" ")'))
eq('Vim(call):E474: Expected four hex digits after \\u: \\u0" ',
exc_exec('call json_decode("\\t\\"abc\\\\u0\\" ")'))
eq('Vim(call):E474: Expected four hex digits after \\u: \\u00" ',
exc_exec('call json_decode("\\t\\"abc\\\\u00\\" ")'))
eq('Vim(call):E474: Expected four hex digits after \\u: \\u000" ',
exc_exec('call json_decode("\\t\\"abc\\\\u000\\" ")'))
eq('Vim(call):E474: Expected string end: \t"abc\\u0000',
exc_exec('call json_decode("\\t\\"abc\\\\u0000")'))
end)
it('fails to parse unknown escape sequnces', function()
eq('Vim(call):E474: Unknown escape sequence: \\a"',
exc_exec('call json_decode("\\t\\"\\\\a\\"")'))
end)
it('parses strings properly', function()
eq('\n', funcs.json_decode('"\\n"'))
eq('', funcs.json_decode('""'))
eq('\\/"\t\b\n\r\f', funcs.json_decode([["\\\/\"\t\b\n\r\f"]]))
eq('/a', funcs.json_decode([["\/a"]]))
-- Unicode characters: 2-byte, 3-byte, 4-byte
eq({
'«',
'ફ',
'\240\144\128\128',
}, funcs.json_decode({
'[',
'"«",',
'"ફ",',
'"\240\144\128\128"',
']',
}))
end)
it('fails on strings with invalid bytes', function()
eq('Vim(call):E474: Only UTF-8 strings allowed: \255"',
exc_exec('call json_decode("\\t\\"\\xFF\\"")'))
eq('Vim(call):E474: ASCII control characters cannot be present inside string: ',
exc_exec('call json_decode(["\\"\\n\\""])'))
-- 0xC2 starts 2-byte unicode character
eq('Vim(call):E474: Only UTF-8 strings allowed: \194"',
exc_exec('call json_decode("\\t\\"\\xC2\\"")'))
-- 0xE0 0xAA starts 3-byte unicode character
eq('Vim(call):E474: Only UTF-8 strings allowed: \224"',
exc_exec('call json_decode("\\t\\"\\xE0\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \224\170"',
exc_exec('call json_decode("\\t\\"\\xE0\\xAA\\"")'))
-- 0xF0 0x90 0x80 starts 4-byte unicode character
eq('Vim(call):E474: Only UTF-8 strings allowed: \240"',
exc_exec('call json_decode("\\t\\"\\xF0\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \240\144"',
exc_exec('call json_decode("\\t\\"\\xF0\\x90\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \240\144\128"',
exc_exec('call json_decode("\\t\\"\\xF0\\x90\\x80\\"")'))
-- 0xF9 0x80 0x80 0x80 starts 5-byte unicode character
eq('Vim(call):E474: Only UTF-8 strings allowed: \249"',
exc_exec('call json_decode("\\t\\"\\xF9\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \249\128"',
exc_exec('call json_decode("\\t\\"\\xF9\\x80\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \249\128\128"',
exc_exec('call json_decode("\\t\\"\\xF9\\x80\\x80\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \249\128\128\128"',
exc_exec('call json_decode("\\t\\"\\xF9\\x80\\x80\\x80\\"")'))
-- 0xFC 0x90 0x80 0x80 0x80 starts 6-byte unicode character
eq('Vim(call):E474: Only UTF-8 strings allowed: \252"',
exc_exec('call json_decode("\\t\\"\\xFC\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \252\144"',
exc_exec('call json_decode("\\t\\"\\xFC\\x90\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \252\144\128"',
exc_exec('call json_decode("\\t\\"\\xFC\\x90\\x80\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \252\144\128\128"',
exc_exec('call json_decode("\\t\\"\\xFC\\x90\\x80\\x80\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \252\144\128\128\128"',
exc_exec('call json_decode("\\t\\"\\xFC\\x90\\x80\\x80\\x80\\"")'))
-- Specification does not allow unquoted characters above 0x10FFFF
eq('Vim(call):E474: Only UTF-8 code points up to U+10FFFF are allowed to appear unescaped: \249\128\128\128\128"',
exc_exec('call json_decode("\\t\\"\\xF9\\x80\\x80\\x80\\x80\\"")'))
eq('Vim(call):E474: Only UTF-8 code points up to U+10FFFF are allowed to appear unescaped: \252\144\128\128\128\128"',
exc_exec('call json_decode("\\t\\"\\xFC\\x90\\x80\\x80\\x80\\x80\\"")'))
-- '"\249\128\128\128\128"',
-- '"\252\144\128\128\128\128"',
end)
it('parses surrogate pairs properly', function()
eq('\240\144\128\128', funcs.json_decode('"\\uD800\\uDC00"'))
eq('\237\160\128a\237\176\128', funcs.json_decode('"\\uD800a\\uDC00"'))
eq('\237\160\128\t\237\176\128', funcs.json_decode('"\\uD800\\t\\uDC00"'))
eq('\237\160\128', funcs.json_decode('"\\uD800"'))
eq('\237\160\128a', funcs.json_decode('"\\uD800a"'))
eq('\237\160\128\t', funcs.json_decode('"\\uD800\\t"'))
eq('\237\176\128', funcs.json_decode('"\\uDC00"'))
eq('\237\176\128a', funcs.json_decode('"\\uDC00a"'))
eq('\237\176\128\t', funcs.json_decode('"\\uDC00\\t"'))
eq('\237\176\128', funcs.json_decode('"\\uDC00"'))
eq('a\237\176\128', funcs.json_decode('"a\\uDC00"'))
eq('\t\237\176\128', funcs.json_decode('"\\t\\uDC00"'))
eq('\237\160\128¬', funcs.json_decode('"\\uD800\\u00AC"'))
eq('\237\160\128\237\160\128', funcs.json_decode('"\\uD800\\uD800"'))
end)
local sp_decode_eq = function(expected, json)
meths.set_var('__json', json)
speq(expected, 'json_decode(g:__json)')
execute('unlet! g:__json')
end
it('parses strings with NUL properly', function()
sp_decode_eq({_TYPE='string', _VAL={'\n'}}, '"\\u0000"')
sp_decode_eq({_TYPE='string', _VAL={'\n', '\n'}}, '"\\u0000\\n\\u0000"')
sp_decode_eq({_TYPE='string', _VAL={'\n«\n'}}, '"\\u0000\\u00AB\\u0000"')
end)
it('parses dictionaries with duplicate keys to special maps', function()
sp_decode_eq({_TYPE='map', _VAL={{'a', 1}, {'a', 2}}},
'{"a": 1, "a": 2}')
sp_decode_eq({_TYPE='map', _VAL={{'b', 3}, {'a', 1}, {'a', 2}}},
'{"b": 3, "a": 1, "a": 2}')
sp_decode_eq({_TYPE='map', _VAL={{'b', 3}, {'a', 1}, {'c', 4}, {'a', 2}}},
'{"b": 3, "a": 1, "c": 4, "a": 2}')
sp_decode_eq({_TYPE='map', _VAL={{'b', 3}, {'a', 1}, {'c', 4}, {'a', 2}, {'c', 4}}},
'{"b": 3, "a": 1, "c": 4, "a": 2, "c": 4}')
sp_decode_eq({{_TYPE='map', _VAL={{'b', 3}, {'a', 1}, {'c', 4}, {'a', 2}, {'c', 4}}}},
'[{"b": 3, "a": 1, "c": 4, "a": 2, "c": 4}]')
sp_decode_eq({{d={_TYPE='map', _VAL={{'b', 3}, {'a', 1}, {'c', 4}, {'a', 2}, {'c', 4}}}}},
'[{"d": {"b": 3, "a": 1, "c": 4, "a": 2, "c": 4}}]')
sp_decode_eq({1, {d={_TYPE='map', _VAL={{'b', 3}, {'a', 1}, {'c', 4}, {'a', 2}, {'c', 4}}}}},
'[1, {"d": {"b": 3, "a": 1, "c": 4, "a": 2, "c": 4}}]')
sp_decode_eq({1, {a={}, d={_TYPE='map', _VAL={{'b', 3}, {'a', 1}, {'c', 4}, {'a', 2}, {'c', 4}}}}},
'[1, {"a": [], "d": {"b": 3, "a": 1, "c": 4, "a": 2, "c": 4}}]')
end)
it('parses dictionaries with empty keys to special maps', function()
sp_decode_eq({_TYPE='map', _VAL={{'', 4}}},
'{"": 4}')
sp_decode_eq({_TYPE='map', _VAL={{'b', 3}, {'a', 1}, {'c', 4}, {'d', 2}, {'', 4}}},
'{"b": 3, "a": 1, "c": 4, "d": 2, "": 4}')
sp_decode_eq({_TYPE='map', _VAL={{'', 3}, {'a', 1}, {'c', 4}, {'d', 2}, {'', 4}}},
'{"": 3, "a": 1, "c": 4, "d": 2, "": 4}')
sp_decode_eq({{_TYPE='map', _VAL={{'', 3}, {'a', 1}, {'c', 4}, {'d', 2}, {'', 4}}}},
'[{"": 3, "a": 1, "c": 4, "d": 2, "": 4}]')
end)
it('parses dictionaries with keys with NUL bytes to special maps', function()
sp_decode_eq({_TYPE='map', _VAL={{{_TYPE='string', _VAL={'a\n', 'b'}}, 4}}},
'{"a\\u0000\\nb": 4}')
sp_decode_eq({_TYPE='map', _VAL={{{_TYPE='string', _VAL={'a\n', 'b', ''}}, 4}}},
'{"a\\u0000\\nb\\n": 4}')
sp_decode_eq({_TYPE='map', _VAL={{'b', 3}, {'a', 1}, {'c', 4}, {'d', 2}, {{_TYPE='string', _VAL={'\n'}}, 4}}},
'{"b": 3, "a": 1, "c": 4, "d": 2, "\\u0000": 4}')
end)
it('converts strings to latin1 when &encoding is latin1', function()
restart('set encoding=latin1')
eq('\171', funcs.json_decode('"\\u00AB"'))
sp_decode_eq({_TYPE='string', _VAL={'\n\171\n'}}, '"\\u0000\\u00AB\\u0000"')
end)
it('fails to convert string to latin1 if it is impossible', function()
restart('set encoding=latin1')
eq('Vim(call):E474: Failed to convert string "ꯍ" from UTF-8',
exc_exec('call json_decode(\'"\\uABCD"\')'))
end)
it('parses U+00C3 correctly', function()
eq('\195\131', funcs.json_decode('"\195\131"'))
end)
it('fails to parse empty string', function()
eq('Vim(call):E474: Attempt to decode a blank string',
exc_exec('call json_decode("")'))
eq('Vim(call):E474: Attempt to decode a blank string',
exc_exec('call json_decode([])'))
eq('Vim(call):E474: Attempt to decode a blank string',
exc_exec('call json_decode([""])'))
eq('Vim(call):E474: Attempt to decode a blank string',
exc_exec('call json_decode(" ")'))
eq('Vim(call):E474: Attempt to decode a blank string',
exc_exec('call json_decode("\\t")'))
eq('Vim(call):E474: Attempt to decode a blank string',
exc_exec('call json_decode("\\n")'))
eq('Vim(call):E474: Attempt to decode a blank string',
exc_exec('call json_decode(" \\t\\n \\n\\t\\t \\n\\t\\n \\n \\t\\n\\t ")'))
end)
it('accepts all spaces in every position where space may be put', function()
local s = ' \t\n\r \t\r\n \n\t\r \n\r\t \r\t\n \r\n\t\t \n\r\t \r\n\t\n \r\t\n\r \t\r \n\t\r\n \n \t\r\n \r\t\n\t \r\n\t\r \n\r \t\n\r\t \r \t\n\r \n\t\r\t \n\r\t\n \r\n \t\r\n\t'
local str = ('%s{%s"key"%s:%s[%s"val"%s,%s"val2"%s]%s,%s"key2"%s:%s1%s}%s'):gsub('%%s', s)
eq({key={'val', 'val2'}, key2=1}, funcs.json_decode(str))
end)
it('always treats input as UTF-8', function()
-- When &encoding is latin1 string "«" is U+00C2 U+00AB U+00C2: «Â. So if
-- '"«"' was parsed as latin1 json_decode would return three characters, and
-- only one U+00AB when this string is parsed as latin1.
restart('set encoding=latin1')
eq(('%c'):format(0xAB), funcs.json_decode('"«"'))
end)
it('does not overflow when writing error message about decoding ["", ""]',
function()
eq('\nE474: Attempt to decode a blank string'
.. '\nE474: Failed to parse \n',
redir_exec('call json_decode(["", ""])'))
end)
end)
describe('json_encode() function', function()
before_each(function()
clear()
execute('language C')
end)
it('dumps strings', function()
eq('"Test"', funcs.json_encode('Test'))
eq('""', funcs.json_encode(''))
eq('"\\t"', funcs.json_encode('\t'))
eq('"\\n"', funcs.json_encode('\n'))
eq('"\\u001B"', funcs.json_encode('\27'))
eq('"þÿþ"', funcs.json_encode('þÿþ'))
end)
it('dumps numbers', function()
eq('0', funcs.json_encode(0))
eq('10', funcs.json_encode(10))
eq('-10', funcs.json_encode(-10))
end)
it('dumps floats', function()
eq('0.0', eval('json_encode(0.0)'))
eq('10.5', funcs.json_encode(10.5))
eq('-10.5', funcs.json_encode(-10.5))
eq('-1.0e-5', funcs.json_encode(-1e-5))
eq('1.0e50', eval('json_encode(1.0e50)'))
end)
it('fails to dump NaN and infinite values', function()
eq('Vim(call):E474: Unable to represent NaN value in JSON',
exc_exec('call json_encode(str2float("nan"))'))
eq('Vim(call):E474: Unable to represent infinity in JSON',
exc_exec('call json_encode(str2float("inf"))'))
eq('Vim(call):E474: Unable to represent infinity in JSON',
exc_exec('call json_encode(-str2float("inf"))'))
end)
it('dumps lists', function()
eq('[]', funcs.json_encode({}))
eq('[[]]', funcs.json_encode({{}}))
eq('[[], []]', funcs.json_encode({{}, {}}))
end)
it('dumps dictionaries', function()
eq('{}', eval('json_encode({})'))
eq('{"d": []}', funcs.json_encode({d={}}))
eq('{"d": [], "e": []}', funcs.json_encode({d={}, e={}}))
end)
it('cannot dump generic mapping with generic mapping keys and values',
function()
execute('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": []}')
execute('let todumpv1 = {"_TYPE": v:msgpack_types.map, "_VAL": []}')
execute('let todumpv2 = {"_TYPE": v:msgpack_types.map, "_VAL": []}')
execute('call add(todump._VAL, [todumpv1, todumpv2])')
eq('Vim(call):E474: Invalid key in special dictionary', exc_exec('call json_encode(todump)'))
end)
it('cannot dump generic mapping with ext key', function()
execute('let todump = {"_TYPE": v:msgpack_types.ext, "_VAL": [5, ["",""]]}')
execute('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": [[todump, 1]]}')
eq('Vim(call):E474: Invalid key in special dictionary', exc_exec('call json_encode(todump)'))
end)
it('cannot dump generic mapping with array key', function()
execute('let todump = {"_TYPE": v:msgpack_types.array, "_VAL": [5, [""]]}')
execute('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": [[todump, 1]]}')
eq('Vim(call):E474: Invalid key in special dictionary', exc_exec('call json_encode(todump)'))
end)
it('cannot dump generic mapping with UINT64_MAX key', function()
execute('let todump = {"_TYPE": v:msgpack_types.integer}')
execute('let todump._VAL = [1, 3, 0x7FFFFFFF, 0x7FFFFFFF]')
execute('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": [[todump, 1]]}')
eq('Vim(call):E474: Invalid key in special dictionary', exc_exec('call json_encode(todump)'))
end)
it('cannot dump generic mapping with floating-point key', function()
execute('let todump = {"_TYPE": v:msgpack_types.float, "_VAL": 0.125}')
execute('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": [[todump, 1]]}')
eq('Vim(call):E474: Invalid key in special dictionary', exc_exec('call json_encode(todump)'))
end)
it('can dump generic mapping with STR special key and NUL', function()
execute('let todump = {"_TYPE": v:msgpack_types.string, "_VAL": ["\\n"]}')
execute('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": [[todump, 1]]}')
eq('{"\\u0000": 1}', eval('json_encode(todump)'))
end)
it('can dump generic mapping with BIN special key and NUL', function()
execute('let todump = {"_TYPE": v:msgpack_types.binary, "_VAL": ["\\n"]}')
execute('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": [[todump, 1]]}')
eq('{"\\u0000": 1}', eval('json_encode(todump)'))
end)
it('can dump STR special mapping with NUL and NL', function()
execute('let todump = {"_TYPE": v:msgpack_types.string, "_VAL": ["\\n", ""]}')
eq('"\\u0000\\n"', eval('json_encode(todump)'))
end)
it('can dump BIN special mapping with NUL and NL', function()
execute('let todump = {"_TYPE": v:msgpack_types.binary, "_VAL": ["\\n", ""]}')
eq('"\\u0000\\n"', eval('json_encode(todump)'))
end)
it('cannot dump special ext mapping', function()
execute('let todump = {"_TYPE": v:msgpack_types.ext, "_VAL": [5, ["",""]]}')
eq('Vim(call):E474: Unable to convert EXT string to JSON', exc_exec('call json_encode(todump)'))
end)
it('can dump special array mapping', function()
execute('let todump = {"_TYPE": v:msgpack_types.array, "_VAL": [5, [""]]}')
eq('[5, [""]]', eval('json_encode(todump)'))
end)
it('can dump special UINT64_MAX mapping', function()
execute('let todump = {"_TYPE": v:msgpack_types.integer}')
execute('let todump._VAL = [1, 3, 0x7FFFFFFF, 0x7FFFFFFF]')
eq('18446744073709551615', eval('json_encode(todump)'))
end)
it('can dump special INT64_MIN mapping', function()
execute('let todump = {"_TYPE": v:msgpack_types.integer}')
execute('let todump._VAL = [-1, 2, 0, 0]')
eq('-9223372036854775808', eval('json_encode(todump)'))
end)
it('can dump special BOOLEAN true mapping', function()
execute('let todump = {"_TYPE": v:msgpack_types.boolean, "_VAL": 1}')
eq('true', eval('json_encode(todump)'))
end)
it('can dump special BOOLEAN false mapping', function()
execute('let todump = {"_TYPE": v:msgpack_types.boolean, "_VAL": 0}')
eq('false', eval('json_encode(todump)'))
end)
it('can dump special NIL mapping', function()
execute('let todump = {"_TYPE": v:msgpack_types.nil, "_VAL": 0}')
eq('null', eval('json_encode(todump)'))
end)
it('fails to dump a function reference', function()
eq('Vim(call):E474: Error while dumping encode_tv2json() argument, itself: attempt to dump function reference',
exc_exec('call json_encode(function("tr"))'))
end)
it('fails to dump a function reference in a list', function()
eq('Vim(call):E474: Error while dumping encode_tv2json() argument, index 0: attempt to dump function reference',
exc_exec('call json_encode([function("tr")])'))
end)
it('fails to dump a recursive list', function()
execute('let todump = [[[]]]')
execute('call add(todump[0][0], todump)')
eq('Vim(call):E724: unable to correctly dump variable with self-referencing container',
exc_exec('call json_encode(todump)'))
end)
it('fails to dump a recursive dict', function()
execute('let todump = {"d": {"d": {}}}')
execute('call extend(todump.d.d, {"d": todump})')
eq('Vim(call):E724: unable to correctly dump variable with self-referencing container',
exc_exec('call json_encode([todump])'))
end)
it('can dump dict with two same dicts inside', function()
execute('let inter = {}')
execute('let todump = {"a": inter, "b": inter}')
eq('{"a": {}, "b": {}}', eval('json_encode(todump)'))
end)
it('can dump list with two same lists inside', function()
execute('let inter = []')
execute('let todump = [inter, inter]')
eq('[[], []]', eval('json_encode(todump)'))
end)
it('fails to dump a recursive list in a special dict', function()
execute('let todump = {"_TYPE": v:msgpack_types.array, "_VAL": []}')
execute('call add(todump._VAL, todump)')
eq('Vim(call):E724: unable to correctly dump variable with self-referencing container',
exc_exec('call json_encode(todump)'))
end)
it('fails to dump a recursive (val) map in a special dict', function()
execute('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": []}')
execute('call add(todump._VAL, ["", todump])')
eq('Vim(call):E724: unable to correctly dump variable with self-referencing container',
exc_exec('call json_encode([todump])'))
end)
it('fails to dump a recursive (val) map in a special dict, _VAL reference', function()
execute('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": [["", []]]}')
execute('call add(todump._VAL[0][1], todump._VAL)')
eq('Vim(call):E724: unable to correctly dump variable with self-referencing container',
exc_exec('call json_encode(todump)'))
end)
it('fails to dump a recursive (val) special list in a special dict',
function()
execute('let todump = {"_TYPE": v:msgpack_types.array, "_VAL": []}')
execute('call add(todump._VAL, ["", todump._VAL])')
eq('Vim(call):E724: unable to correctly dump variable with self-referencing container',
exc_exec('call json_encode(todump)'))
end)
it('fails when called with no arguments', function()
eq('Vim(call):E119: Not enough arguments for function: json_encode',
exc_exec('call json_encode()'))
end)
it('fails when called with two arguments', function()
eq('Vim(call):E118: Too many arguments for function: json_encode',
exc_exec('call json_encode(["", ""], 1)'))
end)
it('converts strings from latin1 when &encoding is latin1', function()
clear('set encoding=latin1')
eq('"\\u00AB"', funcs.json_encode('\171'))
eq('"\\u0000\\u00AB\\u0000"', eval('json_encode({"_TYPE": v:msgpack_types.string, "_VAL": ["\\n\171\\n"]})'))
end)
it('ignores improper values in &isprint', function()
meths.set_option('isprint', '1')
eq(1, eval('"\1" =~# "\\\\p"'))
eq('"\\u0001"', funcs.json_encode('\1'))
end)
it('fails when using surrogate character in a UTF-8 string', function()
eq('Vim(call):E474: UTF-8 string contains code point which belongs to a surrogate pair: \237\160\128',
exc_exec('call json_encode("\237\160\128")'))
eq('Vim(call):E474: UTF-8 string contains code point which belongs to a surrogate pair: \237\175\191',
exc_exec('call json_encode("\237\175\191")'))
end)
it('dumps control characters as expected', function()
eq([["\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007\b\t\n\u000B\f\r\u000E\u000F\u0010\u0011\u0012\u0013"]],
eval('json_encode({"_TYPE": v:msgpack_types.string, "_VAL": ["\n\1\2\3\4\5\6\7\8\9", "\11\12\13\14\15\16\17\18\19"]})'))
end)
it('can dump NULL string', function()
eq('""', eval('json_encode($XXX_UNEXISTENT_VAR_XXX)'))
end)
it('can dump NULL list', function()
eq('[]', eval('json_encode(v:_null_list)'))
end)
it('can dump NULL dictionary', function()
eq('{}', eval('json_encode(v:_null_dict)'))
end)
end)
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