ruby/test/json/json_parser_test.rb

514 строки
15 KiB
Ruby

# encoding: utf-8
# frozen_string_literal: false
require_relative 'test_helper'
require 'stringio'
require 'tempfile'
begin
require 'ostruct'
rescue LoadError
end
begin
require 'bigdecimal'
rescue LoadError
end
class JSONParserTest < Test::Unit::TestCase
include JSON
def test_construction
parser = JSON::Parser.new('test')
assert_equal 'test', parser.source
end
def test_argument_encoding
source = "{}".encode("UTF-16")
JSON::Parser.new(source)
assert_equal Encoding::UTF_16, source.encoding
end if defined?(Encoding::UTF_16)
def test_error_message_encoding
# https://github.com/flori/json/actions/runs/6478148162/job/17589572890
pend if RUBY_ENGINE == 'truffleruby'
bug10705 = '[ruby-core:67386] [Bug #10705]'
json = ".\"\xE2\x88\x9A\"".force_encoding(Encoding::UTF_8)
e = assert_raise(JSON::ParserError) {
JSON::Ext::Parser.new(json).parse
}
assert_equal(Encoding::UTF_8, e.message.encoding, bug10705)
assert_include(e.message, json, bug10705)
end if defined?(Encoding::UTF_8) and defined?(JSON::Ext::Parser)
def test_parsing
parser = JSON::Parser.new('"test"')
assert_equal 'test', parser.parse
end
def test_parser_reset
parser = Parser.new('{"a":"b"}')
assert_equal({ 'a' => 'b' }, parser.parse)
assert_equal({ 'a' => 'b' }, parser.parse)
end
def test_parse_values
assert_equal(nil, parse('null'))
assert_equal(false, parse('false'))
assert_equal(true, parse('true'))
assert_equal(-23, parse('-23'))
assert_equal(23, parse('23'))
assert_in_delta(0.23, parse('0.23'), 1e-2)
assert_in_delta(0.0, parse('0e0'), 1e-2)
assert_equal("", parse('""'))
assert_equal("foobar", parse('"foobar"'))
end
def test_parse_simple_arrays
assert_equal([], parse('[]'))
assert_equal([], parse(' [ ] '))
assert_equal([ nil ], parse('[null]'))
assert_equal([ false ], parse('[false]'))
assert_equal([ true ], parse('[true]'))
assert_equal([ -23 ], parse('[-23]'))
assert_equal([ 23 ], parse('[23]'))
assert_equal_float([ 0.23 ], parse('[0.23]'))
assert_equal_float([ 0.0 ], parse('[0e0]'))
assert_equal([""], parse('[""]'))
assert_equal(["foobar"], parse('["foobar"]'))
assert_equal([{}], parse('[{}]'))
end
def test_parse_simple_objects
assert_equal({}, parse('{}'))
assert_equal({}, parse(' { } '))
assert_equal({ "a" => nil }, parse('{ "a" : null}'))
assert_equal({ "a" => nil }, parse('{"a":null}'))
assert_equal({ "a" => false }, parse('{ "a" : false } '))
assert_equal({ "a" => false }, parse('{"a":false}'))
assert_raise(JSON::ParserError) { parse('{false}') }
assert_equal({ "a" => true }, parse('{"a":true}'))
assert_equal({ "a" => true }, parse(' { "a" : true } '))
assert_equal({ "a" => -23 }, parse(' { "a" : -23 } '))
assert_equal({ "a" => -23 }, parse(' { "a" : -23 } '))
assert_equal({ "a" => 23 }, parse('{"a":23 } '))
assert_equal({ "a" => 23 }, parse(' { "a" : 23 } '))
assert_equal({ "a" => 0.23 }, parse(' { "a" : 0.23 } '))
assert_equal({ "a" => 0.23 }, parse(' { "a" : 0.23 } '))
assert_equal({ "" => 123 }, parse('{"":123}'))
end
def test_parse_numbers
assert_raise(JSON::ParserError) { parse('+23.2') }
assert_raise(JSON::ParserError) { parse('+23') }
assert_raise(JSON::ParserError) { parse('.23') }
assert_raise(JSON::ParserError) { parse('023') }
assert_equal(23, parse('23'))
assert_equal(-23, parse('-23'))
assert_equal_float(3.141, parse('3.141'))
assert_equal_float(-3.141, parse('-3.141'))
assert_equal_float(3.141, parse('3141e-3'))
assert_equal_float(3.141, parse('3141.1e-3'))
assert_equal_float(3.141, parse('3141E-3'))
assert_equal_float(3.141, parse('3141.0E-3'))
assert_equal_float(-3.141, parse('-3141.0e-3'))
assert_equal_float(-3.141, parse('-3141e-3'))
assert_raise(ParserError) { parse('NaN') }
assert parse('NaN', :allow_nan => true).nan?
assert_raise(ParserError) { parse('Infinity') }
assert_equal(1.0/0, parse('Infinity', :allow_nan => true))
assert_raise(ParserError) { parse('-Infinity') }
assert_equal(-1.0/0, parse('-Infinity', :allow_nan => true))
end
def test_parse_bigdecimals
assert_equal(BigDecimal, JSON.parse('{"foo": 9.01234567890123456789}', decimal_class: BigDecimal)["foo"].class)
assert_equal(BigDecimal("0.901234567890123456789E1"),JSON.parse('{"foo": 9.01234567890123456789}', decimal_class: BigDecimal)["foo"] )
end if defined?(::BigDecimal)
def test_parse_string_mixed_unicode
assert_equal(["éé"], JSON.parse("[\"\\u00e9é\"]"))
end
if Array.method_defined?(:permutation)
def test_parse_more_complex_arrays
a = [ nil, false, true, "foßbar", [ "n€st€d", true ], { "nested" => true, "n€ßt€ð2" => {} }]
a.permutation.each do |perm|
json = pretty_generate(perm)
assert_equal perm, parse(json)
end
end
def test_parse_complex_objects
a = [ nil, false, true, "foßbar", [ "n€st€d", true ], { "nested" => true, "n€ßt€ð2" => {} }]
a.permutation.each do |perm|
s = "a"
orig_obj = perm.inject({}) { |h, x| h[s.dup] = x; s = s.succ; h }
json = pretty_generate(orig_obj)
assert_equal orig_obj, parse(json)
end
end
end
def test_parse_arrays
assert_equal([1,2,3], parse('[1,2,3]'))
assert_equal([1.2,2,3], parse('[1.2,2,3]'))
assert_equal([[],[[],[]]], parse('[[],[[],[]]]'))
assert_equal([], parse('[]'))
assert_equal([], parse(' [ ] '))
assert_equal([1], parse('[1]'))
assert_equal([1], parse(' [ 1 ] '))
ary = [[1], ["foo"], [3.14], [4711.0], [2.718], [nil],
[[1, -2, 3]], [false], [true]]
assert_equal(ary,
parse('[[1],["foo"],[3.14],[47.11e+2],[2718.0E-3],[null],[[1,-2,3]],[false],[true]]'))
assert_equal(ary, parse(%Q{ [ [1] , ["foo"] , [3.14] \t , [47.11e+2]\s
, [2718.0E-3 ],\r[ null] , [[1, -2, 3 ]], [false ],[ true]\n ] }))
end
def test_parse_json_primitive_values
assert_raise(JSON::ParserError) { parse('') }
assert_raise(TypeError) { parse(nil) }
assert_raise(JSON::ParserError) { parse(' /* foo */ ') }
assert_equal nil, parse('null')
assert_equal false, parse('false')
assert_equal true, parse('true')
assert_equal 23, parse('23')
assert_equal 1, parse('1')
assert_equal_float 3.141, parse('3.141'), 1E-3
assert_equal 2 ** 64, parse('18446744073709551616')
assert_equal 'foo', parse('"foo"')
assert parse('NaN', :allow_nan => true).nan?
assert parse('Infinity', :allow_nan => true).infinite?
assert parse('-Infinity', :allow_nan => true).infinite?
assert_raise(JSON::ParserError) { parse('[ 1, ]') }
end
def test_parse_some_strings
assert_equal([""], parse('[""]'))
assert_equal(["\\"], parse('["\\\\"]'))
assert_equal(['"'], parse('["\""]'))
assert_equal(['\\"\\'], parse('["\\\\\\"\\\\"]'))
assert_equal(
["\"\b\n\r\t\0\037"],
parse('["\"\b\n\r\t\u0000\u001f"]')
)
end
def test_parse_big_integers
json1 = JSON(orig = (1 << 31) - 1)
assert_equal orig, parse(json1)
json2 = JSON(orig = 1 << 31)
assert_equal orig, parse(json2)
json3 = JSON(orig = (1 << 62) - 1)
assert_equal orig, parse(json3)
json4 = JSON(orig = 1 << 62)
assert_equal orig, parse(json4)
json5 = JSON(orig = 1 << 64)
assert_equal orig, parse(json5)
end
def test_some_wrong_inputs
assert_raise(ParserError) { parse('[] bla') }
assert_raise(ParserError) { parse('[] 1') }
assert_raise(ParserError) { parse('[] []') }
assert_raise(ParserError) { parse('[] {}') }
assert_raise(ParserError) { parse('{} []') }
assert_raise(ParserError) { parse('{} {}') }
assert_raise(ParserError) { parse('[NULL]') }
assert_raise(ParserError) { parse('[FALSE]') }
assert_raise(ParserError) { parse('[TRUE]') }
assert_raise(ParserError) { parse('[07] ') }
assert_raise(ParserError) { parse('[0a]') }
assert_raise(ParserError) { parse('[1.]') }
assert_raise(ParserError) { parse(' ') }
end
def test_symbolize_names
assert_equal({ "foo" => "bar", "baz" => "quux" },
parse('{"foo":"bar", "baz":"quux"}'))
assert_equal({ :foo => "bar", :baz => "quux" },
parse('{"foo":"bar", "baz":"quux"}', :symbolize_names => true))
assert_raise(ArgumentError) do
parse('{}', :symbolize_names => true, :create_additions => true)
end
end
def test_freeze
assert_predicate parse('{}', :freeze => true), :frozen?
assert_predicate parse('[]', :freeze => true), :frozen?
assert_predicate parse('"foo"', :freeze => true), :frozen?
if string_deduplication_available?
assert_same(-'foo', parse('"foo"', :freeze => true))
assert_same(-'foo', parse('{"foo": 1}', :freeze => true).keys.first)
end
end
def test_parse_comments
json = <<EOT
{
"key1":"value1", // eol comment
"key2":"value2" /* multi line
* comment */,
"key3":"value3" /* multi line
// nested eol comment
* comment */
}
EOT
assert_equal(
{ "key1" => "value1", "key2" => "value2", "key3" => "value3" },
parse(json))
json = <<EOT
{
"key1":"value1" /* multi line
// nested eol comment
/* illegal nested multi line comment */
* comment */
}
EOT
assert_raise(ParserError) { parse(json) }
json = <<EOT
{
"key1":"value1" /* multi line
// nested eol comment
closed multi comment */
and again, throw an Error */
}
EOT
assert_raise(ParserError) { parse(json) }
json = <<EOT
{
"key1":"value1" /*/*/
}
EOT
assert_equal({ "key1" => "value1" }, parse(json))
end
def test_nesting
too_deep = '[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[["Too deep"]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]'
too_deep_ary = eval too_deep
assert_raise(JSON::NestingError) { parse too_deep }
assert_raise(JSON::NestingError) { parse too_deep, :max_nesting => 100 }
ok = parse too_deep, :max_nesting => 101
assert_equal too_deep_ary, ok
ok = parse too_deep, :max_nesting => nil
assert_equal too_deep_ary, ok
ok = parse too_deep, :max_nesting => false
assert_equal too_deep_ary, ok
ok = parse too_deep, :max_nesting => 0
assert_equal too_deep_ary, ok
end
def test_backslash
data = [ '\\.(?i:gif|jpe?g|png)$' ]
json = '["\\\\.(?i:gif|jpe?g|png)$"]'
assert_equal data, parse(json)
#
data = [ '\\"' ]
json = '["\\\\\""]'
assert_equal data, parse(json)
#
json = '["/"]'
data = [ '/' ]
assert_equal data, parse(json)
#
json = '["\""]'
data = ['"']
assert_equal data, parse(json)
#
json = '["\\\'"]'
data = ["'"]
assert_equal data, parse(json)
json = '["\/"]'
data = [ '/' ]
assert_equal data, parse(json)
end
class SubArray < Array
def <<(v)
@shifted = true
super
end
def shifted?
@shifted
end
end
class SubArray2 < Array
def to_json(*a)
{
JSON.create_id => self.class.name,
'ary' => to_a,
}.to_json(*a)
end
def self.json_create(o)
o.delete JSON.create_id
o['ary']
end
end
class SubArrayWrapper
def initialize
@data = []
end
attr_reader :data
def [](index)
@data[index]
end
def <<(value)
@data << value
@shifted = true
end
def shifted?
@shifted
end
end
def test_parse_array_custom_array_derived_class
res = parse('[1,2]', :array_class => SubArray)
assert_equal([1,2], res)
assert_equal(SubArray, res.class)
assert res.shifted?
end
def test_parse_array_custom_non_array_derived_class
res = parse('[1,2]', :array_class => SubArrayWrapper)
assert_equal([1,2], res.data)
assert_equal(SubArrayWrapper, res.class)
assert res.shifted?
end
def test_parse_object
assert_equal({}, parse('{}'))
assert_equal({}, parse(' { } '))
assert_equal({'foo'=>'bar'}, parse('{"foo":"bar"}'))
assert_equal({'foo'=>'bar'}, parse(' { "foo" : "bar" } '))
end
class SubHash < Hash
def []=(k, v)
@item_set = true
super
end
def item_set?
@item_set
end
end
class SubHash2 < Hash
def to_json(*a)
{
JSON.create_id => self.class.name,
}.merge(self).to_json(*a)
end
def self.json_create(o)
o.delete JSON.create_id
self[o]
end
end
def test_parse_object_custom_hash_derived_class
res = parse('{"foo":"bar"}', :object_class => SubHash)
assert_equal({"foo" => "bar"}, res)
assert_equal(SubHash, res.class)
assert res.item_set?
end
if defined?(::OpenStruct)
class SubOpenStruct < OpenStruct
def [](k)
__send__(k)
end
def []=(k, v)
@item_set = true
__send__("#{k}=", v)
end
def item_set?
@item_set
end
end
def test_parse_object_custom_non_hash_derived_class
res = parse('{"foo":"bar"}', :object_class => SubOpenStruct)
assert_equal "bar", res.foo
assert_equal(SubOpenStruct, res.class)
assert res.item_set?
end
def test_parse_generic_object
res = parse(
'{"foo":"bar", "baz":{}}',
:object_class => JSON::GenericObject
)
assert_equal(JSON::GenericObject, res.class)
assert_equal "bar", res.foo
assert_equal "bar", res["foo"]
assert_equal "bar", res[:foo]
assert_equal "bar", res.to_hash[:foo]
assert_equal(JSON::GenericObject, res.baz.class)
end
end
def test_generate_core_subclasses_with_new_to_json
obj = SubHash2["foo" => SubHash2["bar" => true]]
obj_json = JSON(obj)
obj_again = parse(obj_json, :create_additions => true)
assert_kind_of SubHash2, obj_again
assert_kind_of SubHash2, obj_again['foo']
assert obj_again['foo']['bar']
assert_equal obj, obj_again
assert_equal ["foo"],
JSON(JSON(SubArray2["foo"]), :create_additions => true)
end
def test_generate_core_subclasses_with_default_to_json
assert_equal '{"foo":"bar"}', JSON(SubHash["foo" => "bar"])
assert_equal '["foo"]', JSON(SubArray["foo"])
end
def test_generate_of_core_subclasses
obj = SubHash["foo" => SubHash["bar" => true]]
obj_json = JSON(obj)
obj_again = JSON(obj_json)
assert_kind_of Hash, obj_again
assert_kind_of Hash, obj_again['foo']
assert obj_again['foo']['bar']
assert_equal obj, obj_again
end
def test_parsing_frozen_ascii8bit_string
assert_equal(
{ 'foo' => 'bar' },
JSON('{ "foo": "bar" }'.force_encoding(Encoding::ASCII_8BIT).freeze)
)
end
private
def string_deduplication_available?
r1 = rand.to_s
r2 = r1.dup
begin
(-r1).equal?(-r2)
rescue NoMethodError
false # No String#-@
end
end
def assert_equal_float(expected, actual, delta = 1e-2)
Array === expected and expected = expected.first
Array === actual and actual = actual.first
assert_in_delta(expected, actual, delta)
end
end