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neovim/test/functional/eval/json_functions_spec.lua

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local helpers = require('test.functional.helpers')
local clear = helpers.clear
local funcs = helpers.funcs
local eq = helpers.eq
local eval = helpers.eval
local execute = helpers.execute
local exc_exec = helpers.exc_exec
describe('jsondecode() function', function()
before_each(clear)
it('accepts readfile()-style list', function()
eq({Test=1}, funcs.jsondecode({
'{',
'\t"Test": 1',
'}',
}))
end)
it('accepts strings with newlines', function()
eq({Test=1}, funcs.jsondecode([[
{
"Test": 1
}
]]))
end)
it('parses null, true, false', function()
eq(nil, funcs.jsondecode('null'))
eq(true, funcs.jsondecode('true'))
eq(false, funcs.jsondecode('false'))
end)
it('fails to parse incomplete null, true, false', function()
eq('Vim(call):E474: Expected null: n',
exc_exec('call jsondecode("n")'))
eq('Vim(call):E474: Expected null: nu',
exc_exec('call jsondecode("nu")'))
eq('Vim(call):E474: Expected null: nul',
exc_exec('call jsondecode("nul")'))
eq('Vim(call):E474: Expected null: nul\n\t',
exc_exec('call jsondecode("nul\\n\\t")'))
eq('Vim(call):E474: Expected true: t',
exc_exec('call jsondecode("t")'))
eq('Vim(call):E474: Expected true: tr',
exc_exec('call jsondecode("tr")'))
eq('Vim(call):E474: Expected true: tru',
exc_exec('call jsondecode("tru")'))
eq('Vim(call):E474: Expected true: tru\t\n',
exc_exec('call jsondecode("tru\\t\\n")'))
eq('Vim(call):E474: Expected false: f',
exc_exec('call jsondecode("f")'))
eq('Vim(call):E474: Expected false: fa',
exc_exec('call jsondecode("fa")'))
eq('Vim(call):E474: Expected false: fal',
exc_exec('call jsondecode("fal")'))
eq('Vim(call):E474: Expected false: fal <',
exc_exec('call jsondecode(" fal <")'))
eq('Vim(call):E474: Expected false: fals',
exc_exec('call jsondecode("fals")'))
end)
it('parses integer numbers', function()
eq(100000, funcs.jsondecode('100000'))
eq(-100000, funcs.jsondecode('-100000'))
eq(100000, funcs.jsondecode(' 100000 '))
eq(-100000, funcs.jsondecode(' -100000 '))
end)
it('fails to parse +numbers', function()
eq('Vim(call):E474: Unidentified byte: +1000',
exc_exec('call jsondecode("+1000")'))
end)
it('fails to parse negative numbers with space after -', function()
eq('Vim(call):E474: Missing number after minus sign: - 1000',
exc_exec('call jsondecode("- 1000")'))
end)
it('fails to parse -', function()
eq('Vim(call):E474: Missing number after minus sign: -',
exc_exec('call jsondecode("-")'))
end)
it('parses floating-point numbers', function()
eq('100000.0', eval('string(jsondecode("100000.0"))'))
eq(100000.5, funcs.jsondecode('100000.5'))
eq(-100000.5, funcs.jsondecode('-100000.5'))
eq(-100000.5e50, funcs.jsondecode('-100000.5e50'))
eq(100000.5e50, funcs.jsondecode('100000.5e50'))
eq(100000.5e50, funcs.jsondecode('100000.5e+50'))
eq(-100000.5e-50, funcs.jsondecode('-100000.5e-50'))
eq(100000.5e-50, funcs.jsondecode('100000.5e-50'))
end)
it('fails to parse incomplete floating-point numbers', function()
eq('Vim(call):E474: Missing number after decimal dot: 0.',
exc_exec('call jsondecode("0.")'))
eq('Vim(call):E474: Missing exponent: 0.0e',
exc_exec('call jsondecode("0.0e")'))
eq('Vim(call):E474: Missing exponent: 0.0e+',
exc_exec('call jsondecode("0.0e+")'))
eq('Vim(call):E474: Missing exponent: 0.0e-',
exc_exec('call jsondecode("0.0e-")'))
end)
it('fails to parse floating-point numbers with spaces inside', function()
eq('Vim(call):E474: Missing number after decimal dot: 0. ',
exc_exec('call jsondecode("0. ")'))
eq('Vim(call):E474: Missing number after decimal dot: 0. 0',
exc_exec('call jsondecode("0. 0")'))
eq('Vim(call):E474: Missing exponent: 0.0e 1',
exc_exec('call jsondecode("0.0e 1")'))
eq('Vim(call):E474: Missing exponent: 0.0e+ 1',
exc_exec('call jsondecode("0.0e+ 1")'))
eq('Vim(call):E474: Missing exponent: 0.0e- 1',
exc_exec('call jsondecode("0.0e- 1")'))
end)
it('fails to parse "," and ":"', function()
eq('Vim(call):E474: Comma not inside container: , ',
exc_exec('call jsondecode(" , ")'))
eq('Vim(call):E474: Colon not inside container: : ',
exc_exec('call jsondecode(" : ")'))
end)
it('parses empty containers', function()
eq({}, funcs.jsondecode('[]'))
eq('[]', eval('string(jsondecode("[]"))'))
end)
it('fails to parse "[" and "{"', function()
eq('Vim(call):E474: Unexpected end of input: {',
exc_exec('call jsondecode("{")'))
eq('Vim(call):E474: Unexpected end of input: [',
exc_exec('call jsondecode("[")'))
end)
it('fails to parse "}" and "]"', function()
eq('Vim(call):E474: No container to close: ]',
exc_exec('call jsondecode("]")'))
eq('Vim(call):E474: No container to close: }',
exc_exec('call jsondecode("}")'))
end)
it('fails to parse containers which are closed by different brackets',
function()
eq('Vim(call):E474: Closing dictionary with bracket: ]',
exc_exec('call jsondecode("{]")'))
eq('Vim(call):E474: Closing list with figure brace: }',
exc_exec('call jsondecode("[}")'))
end)
it('fails to parse containers with leading comma or colon', function()
eq('Vim(call):E474: Leading comma: ,}',
exc_exec('call jsondecode("{,}")'))
eq('Vim(call):E474: Leading comma: ,]',
exc_exec('call jsondecode("[,]")'))
eq('Vim(call):E474: Using colon not in dictionary: :]',
exc_exec('call jsondecode("[:]")'))
eq('Vim(call):E474: Unexpected colon: :}',
exc_exec('call jsondecode("{:}")'))
end)
it('fails to parse containers with trailing comma', function()
eq('Vim(call):E474: Trailing comma: ]',
exc_exec('call jsondecode("[1,]")'))
eq('Vim(call):E474: Trailing comma: }',
exc_exec('call jsondecode("{\\"1\\": 2,}")'))
end)
it('fails to parse dictionaries with missing value', function()
eq('Vim(call):E474: Expected value after colon: }',
exc_exec('call jsondecode("{\\"1\\":}")'))
eq('Vim(call):E474: Expected value: }',
exc_exec('call jsondecode("{\\"1\\"}")'))
end)
it('fails to parse containers with two commas or colons', function()
eq('Vim(call):E474: Duplicate comma: , "2": 2}',
exc_exec('call jsondecode("{\\"1\\": 1,, \\"2\\": 2}")'))
eq('Vim(call):E474: Duplicate comma: , "2", 2]',
exc_exec('call jsondecode("[\\"1\\", 1,, \\"2\\", 2]")'))
eq('Vim(call):E474: Duplicate colon: : 2}',
exc_exec('call jsondecode("{\\"1\\": 1, \\"2\\":: 2}")'))
eq('Vim(call):E474: Comma after colon: , 2}',
exc_exec('call jsondecode("{\\"1\\": 1, \\"2\\":, 2}")'))
eq('Vim(call):E474: Unexpected colon: : "2": 2}',
exc_exec('call jsondecode("{\\"1\\": 1,: \\"2\\": 2}")'))
eq('Vim(call):E474: Unexpected colon: :, "2": 2}',
exc_exec('call jsondecode("{\\"1\\": 1:, \\"2\\": 2}")'))
end)
it('fails to parse concat of two values', function()
eq('Vim(call):E474: Trailing characters: []',
exc_exec('call jsondecode("{}[]")'))
end)
it('parses containers', function()
eq({1}, funcs.jsondecode('[1]'))
eq({nil, 1}, funcs.jsondecode('[null, 1]'))
eq({['1']=2}, funcs.jsondecode('{"1": 2}'))
eq({['1']=2, ['3']={{['4']={['5']={{}, 1}}}}},
funcs.jsondecode('{"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 jsondecode("\\t\\"")'))
eq('Vim(call):E474: Expected string end: \t"abc',
exc_exec('call jsondecode("\\t\\"abc")'))
eq('Vim(call):E474: Unfinished escape sequence: \t"abc\\',
exc_exec('call jsondecode("\\t\\"abc\\\\")'))
eq('Vim(call):E474: Unfinished unicode escape sequence: \t"abc\\u',
exc_exec('call jsondecode("\\t\\"abc\\\\u")'))
eq('Vim(call):E474: Unfinished unicode escape sequence: \t"abc\\u0',
exc_exec('call jsondecode("\\t\\"abc\\\\u0")'))
eq('Vim(call):E474: Unfinished unicode escape sequence: \t"abc\\u00',
exc_exec('call jsondecode("\\t\\"abc\\\\u00")'))
eq('Vim(call):E474: Unfinished unicode escape sequence: \t"abc\\u000',
exc_exec('call jsondecode("\\t\\"abc\\\\u000")'))
eq('Vim(call):E474: Expected string end: \t"abc\\u0000',
exc_exec('call jsondecode("\\t\\"abc\\\\u0000")'))
end)
it('fails to parse unknown escape sequnces', function()
eq('Vim(call):E474: Unknown escape sequence: \\a"',
exc_exec('call jsondecode("\\t\\"\\\\a\\"")'))
end)
it('parses strings properly', function()
eq('\n', funcs.jsondecode('"\\n"'))
eq('', funcs.jsondecode('""'))
eq('\\/"\t\b\n\r\f', funcs.jsondecode([["\\\/\"\t\b\n\r\f"]]))
eq('/a', funcs.jsondecode([["\/a"]]))
-- Unicode characters: 2-byte, 3-byte, 4-byte
eq({
'«',
'ફ',
'\xF0\x90\x80\x80',
}, funcs.jsondecode({
'[',
'"«",',
'"ફ",',
'"\xF0\x90\x80\x80"',
']',
}))
end)
it('fails on strings with invalid bytes', function()
eq('Vim(call):E474: Only UTF-8 strings allowed: \255"',
exc_exec('call jsondecode("\\t\\"\\xFF\\"")'))
eq('Vim(call):E474: ASCII control characters cannot be present inside string: ',
exc_exec('call jsondecode(["\\"\\n\\""])'))
-- 0xC2 starts 2-byte unicode character
eq('Vim(call):E474: Only UTF-8 strings allowed: \194"',
exc_exec('call jsondecode("\\t\\"\\xC2\\"")'))
-- 0xE0 0xAA starts 3-byte unicode character
eq('Vim(call):E474: Only UTF-8 strings allowed: \224"',
exc_exec('call jsondecode("\\t\\"\\xE0\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \224\170"',
exc_exec('call jsondecode("\\t\\"\\xE0\\xAA\\"")'))
-- 0xF0 0x90 0x80 starts 4-byte unicode character
eq('Vim(call):E474: Only UTF-8 strings allowed: \240"',
exc_exec('call jsondecode("\\t\\"\\xF0\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \240\144"',
exc_exec('call jsondecode("\\t\\"\\xF0\\x90\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \240\144\128"',
exc_exec('call jsondecode("\\t\\"\\xF0\\x90\\x80\\"")'))
-- 0xF9 0x80 0x80 0x80 starts 5-byte unicode character
eq('Vim(call):E474: Only UTF-8 strings allowed: \xF9"',
exc_exec('call jsondecode("\\t\\"\\xF9\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \xF9\x80"',
exc_exec('call jsondecode("\\t\\"\\xF9\\x80\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \xF9\x80\x80"',
exc_exec('call jsondecode("\\t\\"\\xF9\\x80\\x80\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \xF9\x80\x80\x80"',
exc_exec('call jsondecode("\\t\\"\\xF9\\x80\\x80\\x80\\"")'))
-- 0xFC 0x90 0x80 0x80 0x80 starts 6-byte unicode character
eq('Vim(call):E474: Only UTF-8 strings allowed: \xFC"',
exc_exec('call jsondecode("\\t\\"\\xFC\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \xFC\x90"',
exc_exec('call jsondecode("\\t\\"\\xFC\\x90\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \xFC\x90\x80"',
exc_exec('call jsondecode("\\t\\"\\xFC\\x90\\x80\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \xFC\x90\x80\x80"',
exc_exec('call jsondecode("\\t\\"\\xFC\\x90\\x80\\x80\\"")'))
eq('Vim(call):E474: Only UTF-8 strings allowed: \xFC\x90\x80\x80\x80"',
exc_exec('call jsondecode("\\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: \xF9\x80\x80\x80\x80"',
exc_exec('call jsondecode("\\t\\"\\xF9\\x80\\x80\\x80\\x80\\"")'))
eq('Vim(call):E474: Only UTF-8 code points up to U+10FFFF are allowed to appear unescaped: \xFC\x90\x80\x80\x80\x80"',
exc_exec('call jsondecode("\\t\\"\\xFC\\x90\\x80\\x80\\x80\\x80\\"")'))
-- '"\xF9\x80\x80\x80\x80"',
-- '"\xFC\x90\x80\x80\x80\x80"',
end)
end)
describe('jsonencode() function', function()
before_each(clear)
it('dumps strings', function()
eq('"Test"', funcs.jsonencode('Test'))
eq('""', funcs.jsonencode(''))
eq('"\\t"', funcs.jsonencode('\t'))
eq('"\\n"', funcs.jsonencode('\n'))
eq('"\\u001B"', funcs.jsonencode('\27'))
end)
it('dumps numbers', function()
eq('0', funcs.jsonencode(0))
eq('10', funcs.jsonencode(10))
eq('-10', funcs.jsonencode(-10))
end)
it('dumps floats', function()
eq('0.0', eval('jsonencode(0.0)'))
eq('10.5', funcs.jsonencode(10.5))
eq('-10.5', funcs.jsonencode(-10.5))
eq('-1.0e-5', funcs.jsonencode(-1e-5))
eq('1.0e50', eval('jsonencode(1.0e50)'))
end)
it('dumps lists', function()
eq('[]', funcs.jsonencode({}))
eq('[[]]', funcs.jsonencode({{}}))
eq('[[], []]', funcs.jsonencode({{}, {}}))
end)
it('dumps dictionaries', function()
eq('{}', eval('jsonencode({})'))
eq('{"d": []}', funcs.jsonencode({d={}}))
eq('{"d": [], "e": []}', funcs.jsonencode({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 jsonencode(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 jsonencode(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 jsonencode(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 jsonencode(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 jsonencode(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('jsonencode(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('jsonencode(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('jsonencode(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('jsonencode(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 jsonencode(todump)'))
end)
it('can dump special array mapping', function()
execute('let todump = {"_TYPE": v:msgpack_types.array, "_VAL": [5, [""]]}')
eq('[5, [""]]', eval('jsonencode(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('jsonencode(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('jsonencode(todump)'))
end)
it('can dump special BOOLEAN true mapping', function()
execute('let todump = {"_TYPE": v:msgpack_types.boolean, "_VAL": 1}')
eq('true', eval('jsonencode(todump)'))
end)
it('can dump special BOOLEAN false mapping', function()
execute('let todump = {"_TYPE": v:msgpack_types.boolean, "_VAL": 0}')
eq('false', eval('jsonencode(todump)'))
end)
it('can dump special NIL mapping', function()
execute('let todump = {"_TYPE": v:msgpack_types.nil, "_VAL": 0}')
eq('null', eval('jsonencode(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 jsonencode(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 jsonencode([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 jsonencode(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 jsonencode([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('jsonencode(todump)'))
end)
it('can dump list with two same lists inside', function()
execute('let inter = []')
execute('let todump = [inter, inter]')
eq('[[], []]', eval('jsonencode(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 jsonencode(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 jsonencode([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 jsonencode(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 jsonencode(todump)'))
end)
it('fails when called with no arguments', function()
eq('Vim(call):E119: Not enough arguments for function: jsonencode',
exc_exec('call jsonencode()'))
end)
it('fails when called with two arguments', function()
eq('Vim(call):E118: Too many arguments for function: jsonencode',
exc_exec('call jsonencode(["", ""], 1)'))
end)
end)
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