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rails--rails/activesupport/test/json/encoding_test.rb

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# frozen_string_literal: true
require "securerandom"
require "abstract_unit"
require "active_support/core_ext/string/inflections"
require "active_support/json"
require "active_support/time"
require "time_zone_test_helpers"
require "json/encoding_test_cases"
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class TestJSONEncoding < ActiveSupport::TestCase
include TimeZoneTestHelpers
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def sorted_json(json)
if json.start_with?("{") && json.end_with?("}")
"{" + json[1..-2].split(",").sort.join(",") + "}"
else
json
end
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end
JSONTest::EncodingTestCases.constants.each do |class_tests|
define_method("test_#{class_tests[0..-6].underscore}") do
begin
prev = ActiveSupport.use_standard_json_time_format
standard_class_tests = /Standard/.match?(class_tests)
ActiveSupport.escape_html_entities_in_json = !standard_class_tests
ActiveSupport.use_standard_json_time_format = standard_class_tests
JSONTest::EncodingTestCases.const_get(class_tests).each do |pair|
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assert_equal pair.last, sorted_json(ActiveSupport::JSON.encode(pair.first))
end
ensure
ActiveSupport.escape_html_entities_in_json = false
ActiveSupport.use_standard_json_time_format = prev
end
end
end
def test_process_status
rubinius_skip "https://github.com/rubinius/rubinius/issues/3334"
# There doesn't seem to be a good way to get a handle on a Process::Status object without actually
# creating a child process, hence this to populate $?
system("not_a_real_program_#{SecureRandom.hex}")
assert_equal %({"exitstatus":#{$?.exitstatus},"pid":#{$?.pid}}), ActiveSupport::JSON.encode($?)
end
def test_hash_encoding
assert_equal %({\"a\":\"b\"}), ActiveSupport::JSON.encode(a: :b)
assert_equal %({\"a\":1}), ActiveSupport::JSON.encode("a" => 1)
assert_equal %({\"a\":[1,2]}), ActiveSupport::JSON.encode("a" => [1, 2])
assert_equal %({"1":2}), ActiveSupport::JSON.encode(1 => 2)
assert_equal %({\"a\":\"b\",\"c\":\"d\"}), sorted_json(ActiveSupport::JSON.encode(a: :b, c: :d))
end
def test_hash_keys_encoding
ActiveSupport.escape_html_entities_in_json = true
assert_equal "{\"\\u003c\\u003e\":\"\\u003c\\u003e\"}", ActiveSupport::JSON.encode("<>" => "<>")
ensure
ActiveSupport.escape_html_entities_in_json = false
end
def test_utf8_string_encoded_properly
result = ActiveSupport::JSON.encode("€2.99")
assert_equal '"€2.99"', result
assert_equal(Encoding::UTF_8, result.encoding)
result = ActiveSupport::JSON.encode("✎☺")
assert_equal '"✎☺"', result
assert_equal(Encoding::UTF_8, result.encoding)
end
def test_non_utf8_string_transcodes
s = "".encode("Shift_JIS")
result = ActiveSupport::JSON.encode(s)
assert_equal '"二"', result
assert_equal Encoding::UTF_8, result.encoding
end
def test_wide_utf8_chars
w = "𠜎"
result = ActiveSupport::JSON.encode(w)
assert_equal '"𠜎"', result
end
def test_wide_utf8_roundtrip
hash = { string: "𐒑" }
json = ActiveSupport::JSON.encode(hash)
decoded_hash = ActiveSupport::JSON.decode(json)
assert_equal "𐒑", decoded_hash["string"]
end
def test_hash_key_identifiers_are_always_quoted
values = { 0 => 0, 1 => 1, :_ => :_, "$" => "$", "a" => "a", :A => :A, :A0 => :A0, "A0B" => "A0B" }
assert_equal %w( "$" "A" "A0" "A0B" "_" "a" "0" "1" ).sort, object_keys(ActiveSupport::JSON.encode(values))
end
def test_hash_should_allow_key_filtering_with_only
assert_equal %({"a":1}), ActiveSupport::JSON.encode({ "a" => 1, :b => 2, :c => 3 }, { only: "a" })
end
def test_hash_should_allow_key_filtering_with_except
assert_equal %({"b":2}), ActiveSupport::JSON.encode({ "foo" => "bar", :b => 2, :c => 3 }, { except: ["foo", :c] })
end
def test_time_to_json_includes_local_offset
with_standard_json_time_format(true) do
with_env_tz "US/Eastern" do
assert_equal %("2005-02-01T15:15:10.000-05:00"), ActiveSupport::JSON.encode(Time.local(2005, 2, 1, 15, 15, 10))
end
end
end
def test_hash_with_time_to_json
with_standard_json_time_format(false) do
assert_equal '{"time":"2009/01/01 00:00:00 +0000"}', { time: Time.utc(2009) }.to_json
end
end
def test_nested_hash_with_float
assert_nothing_raised do
hash = {
"CHI" => {
display_name: "chicago",
latitude: 123.234
}
}
ActiveSupport::JSON.encode(hash)
end
end
def test_hash_like_with_options
h = JSONTest::Hashlike.new
json = h.to_json only: [:foo]
assert_equal({ "foo" => "hello" }, JSON.parse(json))
end
def test_object_to_json_with_options
obj = Object.new
obj.instance_variable_set :@foo, "hello"
obj.instance_variable_set :@bar, "world"
json = obj.to_json only: ["foo"]
assert_equal({ "foo" => "hello" }, JSON.parse(json))
end
def test_struct_to_json_with_options
struct = Struct.new(:foo, :bar).new
struct.foo = "hello"
struct.bar = "world"
json = struct.to_json only: [:foo]
assert_equal({ "foo" => "hello" }, JSON.parse(json))
end
def test_hash_should_pass_encoding_options_to_children_in_as_json
person = {
name: "John",
address: {
city: "London",
country: "UK"
}
}
json = person.as_json only: [:address, :city]
assert_equal({ "address" => { "city" => "London" } }, json)
end
def test_hash_should_pass_encoding_options_to_children_in_to_json
person = {
name: "John",
address: {
city: "London",
country: "UK"
}
}
json = person.to_json only: [:address, :city]
assert_equal(%({"address":{"city":"London"}}), json)
end
def test_array_should_pass_encoding_options_to_children_in_as_json
people = [
{ name: "John", address: { city: "London", country: "UK" } },
{ name: "Jean", address: { city: "Paris", country: "France" } }
]
json = people.as_json only: [:address, :city]
expected = [
{ "address" => { "city" => "London" } },
{ "address" => { "city" => "Paris" } }
]
assert_equal(expected, json)
end
def test_array_should_pass_encoding_options_to_children_in_to_json
people = [
{ name: "John", address: { city: "London", country: "UK" } },
{ name: "Jean", address: { city: "Paris", country: "France" } }
]
json = people.to_json only: [:address, :city]
assert_equal(%([{"address":{"city":"London"}},{"address":{"city":"Paris"}}]), json)
end
People = Class.new(BasicObject) do
include Enumerable
def initialize
@people = [
{ name: "John", address: { city: "London", country: "UK" } },
{ name: "Jean", address: { city: "Paris", country: "France" } }
]
end
def each(*, &blk)
@people.each do |p|
yield p if blk
p
end.each
end
end
def test_enumerable_should_generate_json_with_as_json
json = People.new.as_json only: [:address, :city]
expected = [
{ "address" => { "city" => "London" } },
{ "address" => { "city" => "Paris" } }
]
assert_equal(expected, json)
end
def test_enumerable_should_generate_json_with_to_json
json = People.new.to_json only: [:address, :city]
assert_equal(%([{"address":{"city":"London"}},{"address":{"city":"Paris"}}]), json)
end
def test_enumerable_should_pass_encoding_options_to_children_in_as_json
json = People.new.each.as_json only: [:address, :city]
expected = [
{ "address" => { "city" => "London" } },
{ "address" => { "city" => "Paris" } }
]
assert_equal(expected, json)
end
def test_enumerable_should_pass_encoding_options_to_children_in_to_json
json = People.new.each.to_json only: [:address, :city]
assert_equal(%([{"address":{"city":"London"}},{"address":{"city":"Paris"}}]), json)
end
class CustomWithOptions
attr_accessor :foo, :bar
def as_json(options = {})
options[:only] = %w(foo bar)
super(options)
end
end
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def test_hash_to_json_should_not_keep_options_around
f = CustomWithOptions.new
f.foo = "hello"
f.bar = "world"
hash = { "foo" => f, "other_hash" => { "foo" => "other_foo", "test" => "other_test" } }
assert_equal({ "foo" => { "foo" => "hello", "bar" => "world" },
"other_hash" => { "foo" => "other_foo", "test" => "other_test" } }, ActiveSupport::JSON.decode(hash.to_json))
end
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def test_array_to_json_should_not_keep_options_around
f = CustomWithOptions.new
f.foo = "hello"
f.bar = "world"
array = [f, { "foo" => "other_foo", "test" => "other_test" }]
assert_equal([{ "foo" => "hello", "bar" => "world" },
{ "foo" => "other_foo", "test" => "other_test" }], ActiveSupport::JSON.decode(array.to_json))
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end
class OptionsTest
def as_json(options = :default)
options
end
end
def test_hash_as_json_without_options
json = { foo: OptionsTest.new }.as_json
assert_equal({ "foo" => :default }, json)
end
def test_array_as_json_without_options
json = [ OptionsTest.new ].as_json
assert_equal([:default], json)
end
def test_struct_encoding
Struct.new("UserNameAndEmail", :name, :email)
Struct.new("UserNameAndDate", :name, :date)
Struct.new("Custom", :name, :sub)
user_email = Struct::UserNameAndEmail.new "David", "sample@example.com"
user_birthday = Struct::UserNameAndDate.new "David", Date.new(2010, 01, 01)
custom = Struct::Custom.new "David", user_birthday
json_strings = ""
json_string_and_date = ""
json_custom = ""
assert_nothing_raised do
json_strings = user_email.to_json
json_string_and_date = user_birthday.to_json
json_custom = custom.to_json
end
assert_equal({ "name" => "David",
"sub" => {
"name" => "David",
"date" => "2010-01-01" } }, ActiveSupport::JSON.decode(json_custom))
assert_equal({ "name" => "David", "email" => "sample@example.com" },
ActiveSupport::JSON.decode(json_strings))
assert_equal({ "name" => "David", "date" => "2010-01-01" },
ActiveSupport::JSON.decode(json_string_and_date))
end
def test_nil_true_and_false_represented_as_themselves
assert_nil nil.as_json
assert_equal true, true.as_json
assert_equal false, false.as_json
end
class HashWithAsJson < Hash
attr_accessor :as_json_called
def initialize(*)
super
end
def as_json(options = {})
@as_json_called = true
super
end
end
def test_json_gem_dump_by_passing_active_support_encoder
h = HashWithAsJson.new
h[:foo] = "hello"
h[:bar] = "world"
assert_equal %({"foo":"hello","bar":"world"}), JSON.dump(h)
assert_nil h.as_json_called
end
def test_json_gem_generate_by_passing_active_support_encoder
h = HashWithAsJson.new
h[:foo] = "hello"
h[:bar] = "world"
assert_equal %({"foo":"hello","bar":"world"}), JSON.generate(h)
assert_nil h.as_json_called
end
def test_json_gem_pretty_generate_by_passing_active_support_encoder
h = HashWithAsJson.new
h[:foo] = "hello"
h[:bar] = "world"
assert_equal <<EXPECTED.chomp, JSON.pretty_generate(h)
{
"foo": "hello",
"bar": "world"
}
EXPECTED
assert_nil h.as_json_called
end
def test_twz_to_json_with_use_standard_json_time_format_config_set_to_false
with_standard_json_time_format(false) do
zone = ActiveSupport::TimeZone["Eastern Time (US & Canada)"]
time = ActiveSupport::TimeWithZone.new(Time.utc(2000), zone)
assert_equal "\"1999/12/31 19:00:00 -0500\"", ActiveSupport::JSON.encode(time)
end
end
def test_twz_to_json_with_use_standard_json_time_format_config_set_to_true
with_standard_json_time_format(true) do
zone = ActiveSupport::TimeZone["Eastern Time (US & Canada)"]
time = ActiveSupport::TimeWithZone.new(Time.utc(2000), zone)
assert_equal "\"1999-12-31T19:00:00.000-05:00\"", ActiveSupport::JSON.encode(time)
end
end
def test_twz_to_json_with_custom_time_precision
with_standard_json_time_format(true) do
with_time_precision(0) do
zone = ActiveSupport::TimeZone["Eastern Time (US & Canada)"]
time = ActiveSupport::TimeWithZone.new(Time.utc(2000), zone)
assert_equal "\"1999-12-31T19:00:00-05:00\"", ActiveSupport::JSON.encode(time)
end
end
end
def test_time_to_json_with_custom_time_precision
with_standard_json_time_format(true) do
with_time_precision(0) do
assert_equal "\"2000-01-01T00:00:00Z\"", ActiveSupport::JSON.encode(Time.utc(2000))
end
end
end
def test_datetime_to_json_with_custom_time_precision
with_standard_json_time_format(true) do
with_time_precision(0) do
assert_equal "\"2000-01-01T00:00:00+00:00\"", ActiveSupport::JSON.encode(DateTime.new(2000))
end
end
end
def test_twz_to_json_when_wrapping_a_date_time
zone = ActiveSupport::TimeZone["Eastern Time (US & Canada)"]
time = ActiveSupport::TimeWithZone.new(DateTime.new(2000), zone)
assert_equal '"1999-12-31T19:00:00.000-05:00"', ActiveSupport::JSON.encode(time)
end
def test_exception_to_json
exception = Exception.new("foo")
assert_equal '"foo"', ActiveSupport::JSON.encode(exception)
end
class InfiniteNumber
def as_json(options = nil)
{ "number" => Float::INFINITY }
end
end
def test_to_json_works_when_as_json_returns_infinite_number
assert_equal '{"number":null}', InfiniteNumber.new.to_json
end
class NaNNumber
def as_json(options = nil)
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{ "number" => Float::NAN }
end
end
def test_to_json_works_when_as_json_returns_NaN_number
assert_equal '{"number":null}', NaNNumber.new.to_json
end
def test_to_json_works_on_io_objects
assert_equal STDOUT.to_s.to_json, STDOUT.to_json
end
private
def object_keys(json_object)
json_object[1..-2].scan(/([^{}:,\s]+):/).flatten.sort
end
def with_standard_json_time_format(boolean = true)
old, ActiveSupport.use_standard_json_time_format = ActiveSupport.use_standard_json_time_format, boolean
yield
ensure
ActiveSupport.use_standard_json_time_format = old
end
def with_time_precision(value)
old_value = ActiveSupport::JSON::Encoding.time_precision
ActiveSupport::JSON::Encoding.time_precision = value
yield
ensure
ActiveSupport::JSON::Encoding.time_precision = old_value
end
end