* test/lib/test/unit.rb: added test files with _test suffix for json

upstream.
* test/json: merge original test files from json upstream.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55667 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/json/json_common_interface_test.rb

@@ -0,0 +1,126 @@
+#frozen_string_literal: false
+require 'test_helper'
+require 'stringio'
+require 'tempfile'
+
+class JSONCommonInterfaceTest < Test::Unit::TestCase
+  include JSON
+
+  def setup
+    @hash = {
+      'a' => 2,
+      'b' => 3.141,
+      'c' => 'c',
+      'd' => [ 1, "b", 3.14 ],
+      'e' => { 'foo' => 'bar' },
+      'g' => "\"\0\037",
+      'h' => 1000.0,
+      'i' => 0.001
+    }
+    @json = '{"a":2,"b":3.141,"c":"c","d":[1,"b",3.14],"e":{"foo":"bar"},'\
+      '"g":"\\"\\u0000\\u001f","h":1000.0,"i":0.001}'
+  end
+
+  def test_index
+    assert_equal @json, JSON[@hash]
+    assert_equal @hash, JSON[@json]
+  end
+
+  def test_parser
+    assert_match /::Parser\z/, JSON.parser.name
+  end
+
+  def test_generator
+    assert_match /::Generator\z/, JSON.generator.name
+  end
+
+  def test_state
+    assert_match /::Generator::State\z/, JSON.state.name
+  end
+
+  def test_create_id
+    assert_equal 'json_class', JSON.create_id
+    JSON.create_id = 'foo_bar'
+    assert_equal 'foo_bar', JSON.create_id
+  ensure
+    JSON.create_id = 'json_class'
+  end
+
+  def test_deep_const_get
+    assert_raises(ArgumentError) { JSON.deep_const_get('Nix::Da') }
+    assert_equal File::SEPARATOR, JSON.deep_const_get('File::SEPARATOR')
+  end
+
+  def test_parse
+    assert_equal [ 1, 2, 3, ], JSON.parse('[ 1, 2, 3 ]')
+  end
+
+  def test_parse_bang
+    assert_equal [ 1, NaN, 3, ], JSON.parse!('[ 1, NaN, 3 ]')
+  end
+
+  def test_generate
+    assert_equal '[1,2,3]', JSON.generate([ 1, 2, 3 ])
+  end
+
+  def test_fast_generate
+    assert_equal '[1,2,3]', JSON.generate([ 1, 2, 3 ])
+  end
+
+  def test_pretty_generate
+    assert_equal "[\n  1,\n  2,\n  3\n]", JSON.pretty_generate([ 1, 2, 3 ])
+  end
+
+  def test_load
+    assert_equal @hash, JSON.load(@json)
+    tempfile = Tempfile.open('@json')
+    tempfile.write @json
+    tempfile.rewind
+    assert_equal @hash, JSON.load(tempfile)
+    stringio = StringIO.new(@json)
+    stringio.rewind
+    assert_equal @hash, JSON.load(stringio)
+    assert_equal nil, JSON.load(nil)
+    assert_equal nil, JSON.load('')
+  ensure
+    tempfile.close!
+  end
+
+  def test_load_with_options
+    json  = '{ "foo": NaN }'
+    assert JSON.load(json, nil, :allow_nan => true)['foo'].nan?
+  end
+
+  def test_load_null
+    assert_equal nil, JSON.load(nil, nil, :allow_blank => true)
+    assert_raises(TypeError) { JSON.load(nil, nil, :allow_blank => false) }
+    assert_raises(JSON::ParserError) { JSON.load('', nil, :allow_blank => false) }
+  end
+
+  def test_dump
+    too_deep = '[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]'
+    assert_equal too_deep, dump(eval(too_deep))
+    assert_kind_of String, Marshal.dump(eval(too_deep))
+    assert_raise(ArgumentError) { dump(eval(too_deep), 100) }
+    assert_raise(ArgumentError) { Marshal.dump(eval(too_deep), 100) }
+    assert_equal too_deep, dump(eval(too_deep), 101)
+    assert_kind_of String, Marshal.dump(eval(too_deep), 101)
+    output = StringIO.new
+    dump(eval(too_deep), output)
+    assert_equal too_deep, output.string
+    output = StringIO.new
+    dump(eval(too_deep), output, 101)
+    assert_equal too_deep, output.string
+  end
+
+  def test_dump_should_modify_defaults
+    max_nesting = JSON.dump_default_options[:max_nesting]
+    dump([], StringIO.new, 10)
+    assert_equal max_nesting, JSON.dump_default_options[:max_nesting]
+  end
+
+  def test_JSON
+    assert_equal @json, JSON(@hash)
+    assert_equal @hash, JSON(@json)
+  end
+end