x = {
    quotes: "a\"b",
    nulls: null
};
eval("y = " + tojson(x));
assert.eq(tojson(x), tojson(y), "A");
assert.eq(typeof(x.nulls), typeof(y.nulls), "B");

// each type is parsed properly
x = {
    "x": null,
    "y": true,
    "z": 123,
    "w": "foo",
    "a": undefined
};
assert.eq(tojson(x, "", false),
          '{\n\t"x" : null,\n\t"y" : true,\n\t"z" : 123,\n\t"w" : "foo",\n\t"a" : undefined\n}',
          "C");

x = {
    "x": [],
    "y": {}
};
assert.eq(tojson(x, "", false), '{\n\t"x" : [ ],\n\t"y" : {\n\t\t\n\t}\n}', "D");

// nested
x = {
    "x": [{"x": [1, 2, []], "z": "ok", "y": [[]]}, {"foo": "bar"}],
    "y": null
};
assert.eq(
    tojson(x),
    '{\n\t"x" : [\n\t\t{\n\t\t\t"x" : [\n\t\t\t\t1,\n\t\t\t\t2,\n\t\t\t\t[ ]\n\t\t\t],\n\t\t\t"z" : "ok",\n\t\t\t"y" : [\n\t\t\t\t[ ]\n\t\t\t]\n\t\t},\n\t\t{\n\t\t\t"foo" : "bar"\n\t\t}\n\t],\n\t"y" : null\n}',
    "E");

// special types
x = {
    "x": ObjectId("4ad35a73d2e34eb4fc43579a"),
    'z': /xd?/ig
};
assert.eq(tojson(x, "", false),
          '{\n\t"x" : ObjectId("4ad35a73d2e34eb4fc43579a"),\n\t"z" : /xd?/gi\n}',
          "F");

// Timestamp type
x = {
    "x": Timestamp()
};
assert.eq(tojson(x, "", false), '{\n\t"x" : Timestamp(0, 0)\n}', "G");

// Timestamp type, second
x = {
    "x": Timestamp(10, 2)
};
assert.eq(tojson(x, "", false), '{\n\t"x" : Timestamp(10, 2)\n}', "H");

// tostrictjson produces proper output
x = {
    "x": NumberLong(64)
};
assert.eq(tostrictjson(x), '{ "x" : { "$numberLong" : "64" } }');

// JSON.stringify produces proper strict JSON
x = {
    "data_binary": BinData(0, "VG8gYmUgb3Igbm90IHRvIGJlLi4uIFRoYXQgaXMgdGhlIHF1ZXN0aW9uLg=="),
    "data_timestamp": Timestamp(987654321, 0),
    "data_regex": /^acme/i,
    "data_oid": ObjectId("579a70d9e249393f153b5bc1"),
    "data_ref": DBRef("test", "579a70d9e249393f153b5bc1"),
    "data_undefined": undefined,
    "data_minkey": MinKey,
    "data_maxkey": MaxKey,
    "data_numberlong": NumberLong("12345"),
    "data_numberint": NumberInt(5),
    "data_numberdecimal": NumberDecimal(3.14)
};

assert.eq(
    JSON.stringify(x),
    '{"data_binary":{"$binary":"VG8gYmUgb3Igbm90IHRvIGJlLi4uIFRoYXQgaXMgdGhlIHF1ZXN0aW9uLg==","$type":"00"},"data_timestamp":{"$timestamp":{"t":987654321,"i":0}},"data_regex":{"$regex":"^acme","$options":"i"},"data_oid":{"$oid":"579a70d9e249393f153b5bc1"},"data_ref":{"$ref":"test","$id":"579a70d9e249393f153b5bc1"},"data_minkey":{"$minKey":1},"data_maxkey":{"$maxKey":1},"data_numberlong":{"$numberLong":"12345"},"data_numberint":5,"data_numberdecimal":{"$numberDecimal":"3.14000000000000"}}');