File: //home/ubuntu/neovim/test/functional/vimscript/json_functions_spec.lua
local t = require('test.testutil')
local n = require('test.functional.testnvim')()
local clear = n.clear
local fn = n.fn
local api = n.api
local eq = t.eq
local eval = n.eval
local command = n.command
local exc_exec = n.exc_exec
local pcall_err = t.pcall_err
local NIL = vim.NIL
local source = n.source
describe('json_decode() function', function()
local restart = function(...)
clear(...)
source([[
language C
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
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, fn.EvalEq(expected, actual_expr))
end
it('accepts readfile()-style list', function()
eq(
{ Test = 1 },
fn.json_decode({
'{',
'\t"Test": 1',
'}',
})
)
end)
it('accepts strings with newlines', function()
eq(
{ Test = 1 },
fn.json_decode([[
{
"Test": 1
}
]])
)
end)
it('parses null, true, false', function()
eq(NIL, fn.json_decode('null'))
eq(true, fn.json_decode('true'))
eq(false, fn.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, fn.json_decode('100000'))
eq(-100000, fn.json_decode('-100000'))
eq(100000, fn.json_decode(' 100000 '))
eq(-100000, fn.json_decode(' -100000 '))
eq(0, fn.json_decode('0'))
eq(0, fn.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()
-- Also test method call (->) syntax
eq('100000.0', eval('"100000.0"->json_decode()->string()'))
eq(100000.5, fn.json_decode('100000.5'))
eq(-100000.5, fn.json_decode('-100000.5'))
eq(-100000.5e50, fn.json_decode('-100000.5e50'))
eq(100000.5e50, fn.json_decode('100000.5e50'))
eq(100000.5e50, fn.json_decode('100000.5e+50'))
eq(-100000.5e-50, fn.json_decode('-100000.5e-50'))
eq(100000.5e-50, fn.json_decode('100000.5e-50'))
eq(100000e-50, fn.json_decode('100000e-50'))
eq(0.5, fn.json_decode('0.5'))
eq(0.005, fn.json_decode('0.005'))
eq(0.005, fn.json_decode('0.00500'))
eq(0.5, fn.json_decode('0.00500e+002'))
eq(0.00005, fn.json_decode('0.00500e-002'))
eq(-0.0, fn.json_decode('-0.0'))
eq(-0.0, fn.json_decode('-0.0e0'))
eq(-0.0, fn.json_decode('-0.0e+0'))
eq(-0.0, fn.json_decode('-0.0e-0'))
eq(-0.0, fn.json_decode('-0e-0'))
eq(-0.0, fn.json_decode('-0e-2'))
eq(-0.0, fn.json_decode('-0e+2'))
eq(0.0, fn.json_decode('0.0'))
eq(0.0, fn.json_decode('0.0e0'))
eq(0.0, fn.json_decode('0.0e+0'))
eq(0.0, fn.json_decode('0.0e-0'))
eq(0.0, fn.json_decode('0e-0'))
eq(0.0, fn.json_decode('0e-2'))
eq(0.0, fn.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({}, fn.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 }, fn.json_decode('[1]'))
eq({ NIL, 1 }, fn.json_decode('[null, 1]'))
eq({ ['1'] = 2 }, fn.json_decode('{"1": 2}'))
eq(
{ ['1'] = 2, ['3'] = { { ['4'] = { ['5'] = { {}, 1 } } } } },
fn.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 sequences', function()
eq(
'Vim(call):E474: Unknown escape sequence: \\a"',
exc_exec('call json_decode("\\t\\"\\\\a\\"")')
)
end)
it('parses strings properly', function()
eq('\n', fn.json_decode('"\\n"'))
eq('', fn.json_decode('""'))
eq('\\/"\t\b\n\r\f', fn.json_decode([["\\\/\"\t\b\n\r\f"]]))
eq('/a', fn.json_decode([["\/a"]]))
-- Unicode characters: 2-byte, 3-byte, 4-byte
eq(
{
'«',
'ફ',
'\240\144\128\128',
},
fn.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', fn.json_decode('"\\uD800\\uDC00"'))
eq('\237\160\128a\237\176\128', fn.json_decode('"\\uD800a\\uDC00"'))
eq('\237\160\128\t\237\176\128', fn.json_decode('"\\uD800\\t\\uDC00"'))
eq('\237\160\128', fn.json_decode('"\\uD800"'))
eq('\237\160\128a', fn.json_decode('"\\uD800a"'))
eq('\237\160\128\t', fn.json_decode('"\\uD800\\t"'))
eq('\237\176\128', fn.json_decode('"\\uDC00"'))
eq('\237\176\128a', fn.json_decode('"\\uDC00a"'))
eq('\237\176\128\t', fn.json_decode('"\\uDC00\\t"'))
eq('\237\176\128', fn.json_decode('"\\uDC00"'))
eq('a\237\176\128', fn.json_decode('"a\\uDC00"'))
eq('\t\237\176\128', fn.json_decode('"\\t\\uDC00"'))
eq('\237\160\128¬', fn.json_decode('"\\uD800\\u00AC"'))
eq('\237\160\128\237\160\128', fn.json_decode('"\\uD800\\uD800"'))
end)
local sp_decode_eq = function(expected, json)
api.nvim_set_var('__json', json)
speq(expected, 'json_decode(g:__json)')
command('unlet! g:__json')
end
it('parses strings with NUL properly', function()
sp_decode_eq('\000', '"\\u0000"')
sp_decode_eq('\000\n\000', '"\\u0000\\n\\u0000"')
sp_decode_eq('\000«\000', '"\\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}}]')
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 empty keys', function()
eq({ [''] = 4 }, fn.json_decode('{"": 4}'))
eq(
{ b = 3, a = 1, c = 4, d = 2, [''] = 4 },
fn.json_decode('{"b": 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 = { { 'a\000\nb', 4 } } }, '{"a\\u0000\\nb": 4}')
sp_decode_eq({ _TYPE = 'map', _VAL = { { 'a\000\nb\n', 4 } } }, '{"a\\u0000\\nb\\n": 4}')
sp_decode_eq({
_TYPE = 'map',
_VAL = {
{ 'b', 3 },
{ 'a', 1 },
{ 'c', 4 },
{ 'd', 2 },
{ '\000', 4 },
},
}, '{"b": 3, "a": 1, "c": 4, "d": 2, "\\u0000": 4}')
end)
it('parses U+00C3 correctly', function()
eq('\195\131', fn.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 }, fn.json_decode(str))
end)
it('does not overflow when writing error message about decoding ["", ""]', function()
eq(
'Vim(call):E474: Attempt to decode a blank string',
pcall_err(command, 'call json_decode(["", ""])')
)
end)
end)
describe('json_encode() function', function()
before_each(function()
clear()
command('language C')
end)
it('dumps strings', function()
eq('"Test"', fn.json_encode('Test'))
eq('""', fn.json_encode(''))
eq('"\\t"', fn.json_encode('\t'))
eq('"\\n"', fn.json_encode('\n'))
eq('"\\u001B"', fn.json_encode('\27'))
eq('"þÿþ"', fn.json_encode('þÿþ'))
end)
it('dumps blobs', function()
eq('[]', eval('json_encode(0z)'))
eq('[222, 173, 190, 239]', eval('json_encode(0zDEADBEEF)'))
end)
it('dumps numbers', function()
eq('0', fn.json_encode(0))
eq('10', fn.json_encode(10))
eq('-10', fn.json_encode(-10))
end)
it('dumps floats', function()
-- Also test method call (->) syntax
eq('0.0', eval('0.0->json_encode()'))
eq('10.5', fn.json_encode(10.5))
eq('-10.5', fn.json_encode(-10.5))
eq('-1.0e-5', fn.json_encode(-1e-5))
eq('1.0e50', eval('1.0e50->json_encode()'))
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('[]', fn.json_encode({}))
eq('[[]]', fn.json_encode({ {} }))
eq('[[], []]', fn.json_encode({ {}, {} }))
end)
it('dumps dictionaries', function()
eq('{}', eval('json_encode({})'))
eq('{"d": []}', fn.json_encode({ d = {} }))
eq('{"d": [], "e": []}', fn.json_encode({ d = {}, e = {} }))
-- Empty keys are allowed per JSON spec (and Vim dicts, and msgpack).
eq('{"": []}', fn.json_encode({ [''] = {} }))
end)
it('cannot dump generic mapping with generic mapping keys and values', function()
command('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": []}')
command('let todumpv1 = {"_TYPE": v:msgpack_types.map, "_VAL": []}')
command('let todumpv2 = {"_TYPE": v:msgpack_types.map, "_VAL": []}')
command('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()
command('let todump = {"_TYPE": v:msgpack_types.ext, "_VAL": [5, ["",""]]}')
command('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()
command('let todump = {"_TYPE": v:msgpack_types.array, "_VAL": [5, [""]]}')
command('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()
command('let todump = {"_TYPE": v:msgpack_types.integer}')
command('let todump._VAL = [1, 3, 0x7FFFFFFF, 0x7FFFFFFF]')
command('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()
command('let todump = {"_TYPE": v:msgpack_types.float, "_VAL": 0.125}')
command('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()
command('let todump = {"_TYPE": v:msgpack_types.string, "_VAL": ["\\n"]}')
command('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()
command('let todump = {"_TYPE": v:msgpack_types.string, "_VAL": ["\\n", ""]}')
eq('"\\u0000\\n"', eval('json_encode(todump)'))
end)
it('cannot dump special ext mapping', function()
command('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()
command('let todump = {"_TYPE": v:msgpack_types.array, "_VAL": [5, [""]]}')
eq('[5, [""]]', eval('json_encode(todump)'))
end)
it('can dump special UINT64_MAX mapping', function()
command('let todump = {"_TYPE": v:msgpack_types.integer}')
command('let todump._VAL = [1, 3, 0x7FFFFFFF, 0x7FFFFFFF]')
eq('18446744073709551615', eval('json_encode(todump)'))
end)
it('can dump special INT64_MIN mapping', function()
command('let todump = {"_TYPE": v:msgpack_types.integer}')
command('let todump._VAL = [-1, 2, 0, 0]')
eq('-9223372036854775808', eval('json_encode(todump)'))
end)
it('can dump special BOOLEAN true mapping', function()
command('let todump = {"_TYPE": v:msgpack_types.boolean, "_VAL": 1}')
eq('true', eval('json_encode(todump)'))
end)
it('can dump special BOOLEAN false mapping', function()
command('let todump = {"_TYPE": v:msgpack_types.boolean, "_VAL": 0}')
eq('false', eval('json_encode(todump)'))
end)
it('can dump special NIL mapping', function()
command('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 partial', function()
command('function T() dict\nendfunction')
eq(
'Vim(call):E474: Error while dumping encode_tv2json() argument, itself: attempt to dump function reference',
exc_exec('call json_encode(function("T", [1, 2], {}))')
)
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()
command('let todump = [[[]]]')
command('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()
command('let todump = {"d": {"d": {}}}')
command('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()
command('let inter = {}')
command('let todump = {"a": inter, "b": inter}')
eq('{"a": {}, "b": {}}', eval('json_encode(todump)'))
end)
it('can dump list with two same lists inside', function()
command('let inter = []')
command('let todump = [inter, inter]')
eq('[[], []]', eval('json_encode(todump)'))
end)
it('fails to dump a recursive list in a special dict', function()
command('let todump = {"_TYPE": v:msgpack_types.array, "_VAL": []}')
command('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()
command('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": []}')
command('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()
command('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": [["", []]]}')
command('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()
command('let todump = {"_TYPE": v:msgpack_types.array, "_VAL": []}')
command('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('ignores improper values in &isprint', function()
api.nvim_set_option_value('isprint', '1', {})
eq(1, eval('"\1" =~# "\\\\p"'))
eq('"\\u0001"', fn.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($XXX_UNEXISTENT_VAR_XXX)'))
end)
it('can dump NULL blob', function()
eq('[]', eval('json_encode(v:_null_blob)'))
end)
it('can dump NULL list', function()
eq('[]', eval('json_encode(v:_null_list)'))
end)
it('can dump NULL dictionary', function()
eq('{}', eval('json_encode(v:_null_dict)'))
end)
it('fails to parse NULL strings and lists', function()
eq(
'Vim(call):E474: Attempt to decode a blank string',
exc_exec('call json_decode($XXX_UNEXISTENT_VAR_XXX)')
)
eq(
'Vim(call):E474: Attempt to decode a blank string',
exc_exec('call json_decode(v:_null_list)')
)
end)
end)