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eval: Add jsondecode() function

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This commit is contained in:
ZyX
2016-02-01 21:22:07 +03:00
parent 0f0e2bdfd4
commit e213ba1506
7 changed files with 793 additions and 6 deletions
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232
test/functional/eval/json_functions_spec.lua
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@@ -6,6 +6,238 @@ 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"]]))
end)
end)
describe('jsonencode() function', function()
before_each(clear)