"use strict"; var status = 0; var throw_errors = true; function throw_error(msg) { if (throw_errors) throw Error(msg); console.log(msg); status = 1; } function assert(actual, expected, message) { function get_full_type(o) { var type = typeof(o); if (type === 'object') { if (o === null) return 'null'; if (o.constructor && o.constructor.name) return o.constructor.name; } return type; } if (arguments.length == 1) expected = true; if (typeof actual === typeof expected) { if (actual === expected) { if (actual !== 0 || (1 / actual) === (1 / expected)) return; } if (typeof actual === 'number') { if (isNaN(actual) && isNaN(expected)) return true; } if (typeof actual === 'object') { if (actual !== null && expected !== null && actual.constructor === expected.constructor && actual.toString() === expected.toString()) return; } } // Should output the source file and line number and extract // the expression from the assert call throw_error("assertion failed: got " + get_full_type(actual) + ":|" + actual + "|, expected " + get_full_type(expected) + ":|" + expected + "|" + (message ? " (" + message + ")" : "")); } function assert_throws(expected_error, func) { var err = false; try { func(); } catch(e) { err = true; if (!(e instanceof expected_error)) { // Should output the source file and line number and extract // the expression from the assert_throws() call throw_error("unexpected exception type"); return; } } if (!err) { // Should output the source file and line number and extract // the expression from the assert_throws() call throw_error("expected exception"); } } // load more elaborate version of assert if available try { __loadScript("test_assert.js"); } catch(e) {} /*----------------*/ function my_func(a, b) { return a + b; } function test_function() { function f(a, b) { var i, tab = []; tab.push(this); for(i = 0; i < arguments.length; i++) tab.push(arguments[i]); return tab; } function constructor1(a) { this.x = a; } var r, g; r = my_func.call(null, 1, 2); assert(r, 3, "call"); r = my_func.apply(null, [1, 2]); assert(r, 3, "apply"); r = (function () { return 1; }).apply(null, undefined); assert(r, 1); assert_throws(TypeError, (function() { Reflect.apply((function () { return 1; }), null, undefined); })); r = new Function("a", "b", "return a + b;"); assert(r(2,3), 5, "function"); g = f.bind(1, 2); assert(g.length, 1); assert(g.name, "bound f"); assert(g(3), [1,2,3]); g = constructor1.bind(null, 1); r = new g(); assert(r.x, 1); } function test() { var r, a, b, c, err; r = Error("hello"); assert(r.message, "hello", "Error"); a = new Object(); a.x = 1; assert(a.x, 1, "Object"); assert(Object.getPrototypeOf(a), Object.prototype, "getPrototypeOf"); Object.defineProperty(a, "y", { value: 3, writable: true, configurable: true, enumerable: true }); assert(a.y, 3, "defineProperty"); Object.defineProperty(a, "z", { get: function () { return 4; }, set: function(val) { this.z_val = val; }, configurable: true, enumerable: true }); assert(a.z, 4, "get"); a.z = 5; assert(a.z_val, 5, "set"); a = { get z() { return 4; }, set z(val) { this.z_val = val; } }; assert(a.z, 4, "get"); a.z = 5; assert(a.z_val, 5, "set"); b = Object.create(a); assert(Object.getPrototypeOf(b), a, "create"); c = {u:2}; /* XXX: refcount bug in 'b' instead of 'a' */ Object.setPrototypeOf(a, c); assert(Object.getPrototypeOf(a), c, "setPrototypeOf"); a = {}; assert(a.toString(), "[object Object]", "toString"); a = {x:1}; assert(Object.isExtensible(a), true, "extensible"); Object.preventExtensions(a); err = false; try { a.y = 2; } catch(e) { err = true; } assert(Object.isExtensible(a), false, "extensible"); assert(typeof a.y, "undefined", "extensible"); assert(err, true, "extensible"); } function test_enum() { var a, tab; a = {x:1, "18014398509481984": 1, "9007199254740992": 1, "9007199254740991": 1, "4294967296": 1, "4294967295": 1, y:1, "4294967294": 1, "1": 2}; tab = Object.keys(a); // console.log("tab=" + tab.toString()); assert(tab, ["1","4294967294","x","18014398509481984","9007199254740992","9007199254740991","4294967296","4294967295","y"], "keys"); } function test_array() { var a, err; a = [1, 2, 3]; assert(a.length, 3, "array"); assert(a[2], 3, "array1"); a = new Array(10); assert(a.length, 10, "array2"); a = new Array(1, 2); assert(a.length === 2 && a[0] === 1 && a[1] === 2, true, "array3"); a = [1, 2, 3]; a.length = 2; assert(a.length === 2 && a[0] === 1 && a[1] === 2, true, "array4"); a = []; a[1] = 10; a[4] = 3; assert(a.length, 5); a = [1,2]; a.length = 5; a[4] = 1; a.length = 4; assert(a[4] !== 1, true, "array5"); a = [1,2]; a.push(3,4); assert(a.join(), "1,2,3,4", "join"); a = [1,2,3,4,5]; Object.defineProperty(a, "3", { configurable: false }); err = false; try { a.length = 2; } catch(e) { err = true; } assert(err && a.toString() === "1,2,3,4"); } function test_string() { var a; a = String("abc"); assert(a.length, 3, "string"); assert(a[1], "b", "string"); assert(a.charCodeAt(1), 0x62, "string"); assert(String.fromCharCode(65), "A", "string"); assert(String.fromCharCode.apply(null, [65, 66, 67]), "ABC", "string"); assert(a.charAt(1), "b"); assert(a.charAt(-1), ""); assert(a.charAt(3), ""); a = "abcd"; assert(a.substring(1, 3), "bc", "substring"); a = String.fromCharCode(0x20ac); assert(a.charCodeAt(0), 0x20ac, "unicode"); assert(a, "€", "unicode"); assert(a, "\u20ac", "unicode"); assert(a, "\u{20ac}", "unicode"); assert("a", "\x61", "unicode"); a = "\u{10ffff}"; assert(a.length, 2, "unicode"); assert(a, "\u{dbff}\u{dfff}", "unicode"); assert(a.codePointAt(0), 0x10ffff); assert(String.fromCodePoint(0x10ffff), a); assert("a".concat("b", "c"), "abc"); assert("abcabc".indexOf("cab"), 2); assert("abcabc".indexOf("cab2"), -1); assert("abc".indexOf("c"), 2); assert("aaa".indexOf("a"), 0); assert("aaa".indexOf("a", NaN), 0); assert("aaa".indexOf("a", -Infinity), 0); assert("aaa".indexOf("a", -1), 0); assert("aaa".indexOf("a", -0), 0); assert("aaa".indexOf("a", 0), 0); assert("aaa".indexOf("a", 1), 1); assert("aaa".indexOf("a", 2), 2); assert("aaa".indexOf("a", 3), -1); assert("aaa".indexOf("a", 4), -1); assert("aaa".indexOf("a", Infinity), -1); assert("aaa".indexOf(""), 0); assert("aaa".indexOf("", NaN), 0); assert("aaa".indexOf("", -Infinity), 0); assert("aaa".indexOf("", -1), 0); assert("aaa".indexOf("", -0), 0); assert("aaa".indexOf("", 0), 0); assert("aaa".indexOf("", 1), 1); assert("aaa".indexOf("", 2), 2); assert("aaa".indexOf("", 3), 3); assert("aaa".indexOf("", 4), 3); assert("aaa".indexOf("", Infinity), 3); assert("aaa".lastIndexOf("a"), 2); assert("aaa".lastIndexOf("a", NaN), 2); assert("aaa".lastIndexOf("a", -Infinity), 0); assert("aaa".lastIndexOf("a", -1), 0); assert("aaa".lastIndexOf("a", -0), 0); assert("aaa".lastIndexOf("a", 0), 0); assert("aaa".lastIndexOf("a", 1), 1); assert("aaa".lastIndexOf("a", 2), 2); assert("aaa".lastIndexOf("a", 3), 2); assert("aaa".lastIndexOf("a", 4), 2); assert("aaa".lastIndexOf("a", Infinity), 2); assert("aaa".lastIndexOf(""), 3); assert("aaa".lastIndexOf("", NaN), 3); assert("aaa".lastIndexOf("", -Infinity), 0); assert("aaa".lastIndexOf("", -1), 0); assert("aaa".lastIndexOf("", -0), 0); assert("aaa".lastIndexOf("", 0), 0); assert("aaa".lastIndexOf("", 1), 1); assert("aaa".lastIndexOf("", 2), 2); assert("aaa".lastIndexOf("", 3), 3); assert("aaa".lastIndexOf("", 4), 3); assert("aaa".lastIndexOf("", Infinity), 3); assert("a,b,c".split(","), ["a","b","c"]); assert(",b,c".split(","), ["","b","c"]); assert("a,b,".split(","), ["a","b",""]); assert("aaaa".split(), [ "aaaa" ]); assert("aaaa".split(undefined, 0), [ ]); assert("aaaa".split(""), [ "a", "a", "a", "a" ]); assert("aaaa".split("", 0), [ ]); assert("aaaa".split("", 1), [ "a" ]); assert("aaaa".split("", 2), [ "a", "a" ]); assert("aaaa".split("a"), [ "", "", "", "", "" ]); assert("aaaa".split("a", 2), [ "", "" ]); assert("aaaa".split("aa"), [ "", "", "" ]); assert("aaaa".split("aa", 0), [ ]); assert("aaaa".split("aa", 1), [ "" ]); assert("aaaa".split("aa", 2), [ "", "" ]); assert("aaaa".split("aaa"), [ "", "a" ]); assert("aaaa".split("aaaa"), [ "", "" ]); assert("aaaa".split("aaaaa"), [ "aaaa" ]); assert("aaaa".split("aaaaa", 0), [ ]); assert("aaaa".split("aaaaa", 1), [ "aaaa" ]); assert(eval('"\0"'), "\0"); assert("abc".padStart(Infinity, ""), "abc"); } function test_math() { var a; a = 1.4; assert(Math.floor(a), 1); assert(Math.ceil(a), 2); assert(Math.imul(0x12345678, 123), -1088058456); assert(Math.imul(0xB505, 0xB504), 2147441940); assert(Math.imul(0xB505, 0xB505), -2147479015); assert(Math.imul((-2)**31, (-2)**31), 0); assert(Math.imul(2**31-1, 2**31-1), 1); assert(Math.fround(0.1), 0.10000000149011612); assert(Math.hypot(), 0); assert(Math.hypot(-2), 2); assert(Math.hypot(3, 4), 5); assert(Math.abs(Math.hypot(3, 4, 5) - 7.0710678118654755) <= 1e-15); } function test_number() { assert(parseInt("123"), 123); assert(parseInt(" 123r"), 123); assert(parseInt("0x123"), 0x123); assert(parseInt("0o123"), 0); assert(+" 123 ", 123); assert(+"0b111", 7); assert(+"0o123", 83); assert(parseFloat("2147483647"), 2147483647); assert(parseFloat("2147483648"), 2147483648); assert(parseFloat("-2147483647"), -2147483647); assert(parseFloat("-2147483648"), -2147483648); assert(parseFloat("0x1234"), 0); assert(parseFloat("Infinity"), Infinity); assert(parseFloat("-Infinity"), -Infinity); assert(parseFloat("123.2"), 123.2); assert(parseFloat("123.2e3"), 123200); assert(Number.isNaN(Number("+"))); assert(Number.isNaN(Number("-"))); assert(Number.isNaN(Number("\x00a"))); // TODO: Fix rounding errors on Windows/Cygwin. if (typeof os !== 'undefined' && ['win32', 'cygwin'].includes(os.platform)) { return; } assert((25).toExponential(0), "3e+1"); assert((-25).toExponential(0), "-3e+1"); assert((2.5).toPrecision(1), "3"); assert((-2.5).toPrecision(1), "-3"); assert((1.125).toFixed(2), "1.13"); assert((-1.125).toFixed(2), "-1.13"); } function test_eval2() { var g_call_count = 0; /* force non strict mode for f1 and f2 */ var f1 = new Function("eval", "eval(1, 2)"); var f2 = new Function("eval", "eval(...[1, 2])"); function g(a, b) { assert(a, 1); assert(b, 2); g_call_count++; } f1(g); f2(g); assert(g_call_count, 2); } function test_eval() { function f(b) { var x = 1; return eval(b); } var r, a; r = eval("1+1;"); assert(r, 2, "eval"); r = eval("var my_var=2; my_var;"); assert(r, 2, "eval"); assert(typeof my_var, "undefined"); assert(eval("if (1) 2; else 3;"), 2); assert(eval("if (0) 2; else 3;"), 3); assert(f.call(1, "this"), 1); a = 2; assert(eval("a"), 2); eval("a = 3"); assert(a, 3); assert(f("arguments.length", 1), 2); assert(f("arguments[1]", 1), 1); a = 4; assert(f("a"), 4); f("a=3"); assert(a, 3); test_eval2(); } function test_typed_array() { var buffer, a, i, str; a = new Uint8Array(4); assert(a.length, 4); for(i = 0; i < a.length; i++) a[i] = i; assert(a.join(","), "0,1,2,3"); a[0] = -1; assert(a[0], 255); a = new Int8Array(3); a[0] = 255; assert(a[0], -1); a = new Int32Array(3); a[0] = Math.pow(2, 32) - 1; assert(a[0], -1); assert(a.BYTES_PER_ELEMENT, 4); a = new Uint8ClampedArray(4); a[0] = -100; a[1] = 1.5; a[2] = 0.5; a[3] = 1233.5; assert(a.toString(), "0,2,0,255"); buffer = new ArrayBuffer(16); assert(buffer.byteLength, 16); a = new Uint32Array(buffer, 12, 1); assert(a.length, 1); a[0] = -1; a = new Uint16Array(buffer, 2); a[0] = -1; a = new Float32Array(buffer, 8, 1); a[0] = 1; a = new Uint8Array(buffer); str = a.toString(); /* test little and big endian cases */ if (str !== "0,0,255,255,0,0,0,0,0,0,128,63,255,255,255,255" && str !== "0,0,255,255,0,0,0,0,63,128,0,0,255,255,255,255") { assert(false); } assert(a.buffer, buffer); a = new Uint8Array([1, 2, 3, 4]); assert(a.toString(), "1,2,3,4"); a.set([10, 11], 2); assert(a.toString(), "1,2,10,11"); } function test_json() { var a, s; s = '{"x":1,"y":true,"z":null,"a":[1,2,3],"s":"str"}'; a = JSON.parse(s); assert(a.x, 1); assert(a.y, true); assert(a.z, null); assert(JSON.stringify(a), s); /* indentation test */ assert(JSON.stringify([[{x:1,y:{},z:[]},2,3]],undefined,1), `[ [ { "x": 1, "y": {}, "z": [] }, 2, 3 ] ]`); } function test_date() { // Date Time String format is YYYY-MM-DDTHH:mm:ss.sssZ // accepted date formats are: YYYY, YYYY-MM and YYYY-MM-DD // accepted time formats are: THH:mm, THH:mm:ss, THH:mm:ss.sss // expanded years are represented with 6 digits prefixed by + or - // -000000 is invalid. // A string containing out-of-bounds or nonconforming elements // is not a valid instance of this format. // Hence the fractional part after . should have 3 digits and how // a different number of digits is handled is implementation defined. assert(Date.parse(""), NaN); assert(Date.parse("2000"), 946684800000); assert(Date.parse("2000-01"), 946684800000); assert(Date.parse("2000-01-01"), 946684800000); //assert(Date.parse("2000-01-01T"), NaN); //assert(Date.parse("2000-01-01T00Z"), NaN); assert(Date.parse("2000-01-01T00:00Z"), 946684800000); assert(Date.parse("2000-01-01T00:00:00Z"), 946684800000); assert(Date.parse("2000-01-01T00:00:00.1Z"), 946684800100); assert(Date.parse("2000-01-01T00:00:00.10Z"), 946684800100); assert(Date.parse("2000-01-01T00:00:00.100Z"), 946684800100); assert(Date.parse("2000-01-01T00:00:00.1000Z"), 946684800100); assert(Date.parse("2000-01-01T00:00:00+00:00"), 946684800000); //assert(Date.parse("2000-01-01T00:00:00+00:30"), 946686600000); var d = new Date("2000T00:00"); // Jan 1st 2000, 0:00:00 local time assert(typeof d === 'object' && d.toString() != 'Invalid Date'); assert((new Date('Jan 1 2000')).toISOString(), d.toISOString()); assert((new Date('Jan 1 2000 00:00')).toISOString(), d.toISOString()); assert((new Date('Jan 1 2000 00:00:00')).toISOString(), d.toISOString()); assert((new Date('Jan 1 2000 00:00:00 GMT+0100')).toISOString(), '1999-12-31T23:00:00.000Z'); assert((new Date('Jan 1 2000 00:00:00 GMT+0200')).toISOString(), '1999-12-31T22:00:00.000Z'); assert((new Date('Sat Jan 1 2000')).toISOString(), d.toISOString()); assert((new Date('Sat Jan 1 2000 00:00')).toISOString(), d.toISOString()); assert((new Date('Sat Jan 1 2000 00:00:00')).toISOString(), d.toISOString()); assert((new Date('Sat Jan 1 2000 00:00:00 GMT+0100')).toISOString(), '1999-12-31T23:00:00.000Z'); assert((new Date('Sat Jan 1 2000 00:00:00 GMT+0200')).toISOString(), '1999-12-31T22:00:00.000Z'); var d = new Date(1506098258091); assert(d.toISOString(), "2017-09-22T16:37:38.091Z"); d.setUTCHours(18, 10, 11); assert(d.toISOString(), "2017-09-22T18:10:11.091Z"); var a = Date.parse(d.toISOString()); assert((new Date(a)).toISOString(), d.toISOString()); assert((new Date("2020-01-01T01:01:01.123Z")).toISOString(), "2020-01-01T01:01:01.123Z"); /* implementation defined behavior */ assert((new Date("2020-01-01T01:01:01.1Z")).toISOString(), "2020-01-01T01:01:01.100Z"); assert((new Date("2020-01-01T01:01:01.12Z")).toISOString(), "2020-01-01T01:01:01.120Z"); assert((new Date("2020-01-01T01:01:01.1234Z")).toISOString(), "2020-01-01T01:01:01.123Z"); assert((new Date("2020-01-01T01:01:01.12345Z")).toISOString(), "2020-01-01T01:01:01.123Z"); assert((new Date("2020-01-01T01:01:01.1235Z")).toISOString(), "2020-01-01T01:01:01.123Z"); assert((new Date("2020-01-01T01:01:01.9999Z")).toISOString(), "2020-01-01T01:01:01.999Z"); assert(Date.UTC(2017), 1483228800000); assert(Date.UTC(2017, 9), 1506816000000); assert(Date.UTC(2017, 9, 22), 1508630400000); assert(Date.UTC(2017, 9, 22, 18), 1508695200000); assert(Date.UTC(2017, 9, 22, 18, 10), 1508695800000); assert(Date.UTC(2017, 9, 22, 18, 10, 11), 1508695811000); assert(Date.UTC(2017, 9, 22, 18, 10, 11, 91), 1508695811091); assert(Date.UTC(NaN), NaN); assert(Date.UTC(2017, NaN), NaN); assert(Date.UTC(2017, 9, NaN), NaN); assert(Date.UTC(2017, 9, 22, NaN), NaN); assert(Date.UTC(2017, 9, 22, 18, NaN), NaN); assert(Date.UTC(2017, 9, 22, 18, 10, NaN), NaN); assert(Date.UTC(2017, 9, 22, 18, 10, 11, NaN), NaN); assert(Date.UTC(2017, 9, 22, 18, 10, 11, 91, NaN), 1508695811091); // TODO: Fix rounding errors on Windows/Cygwin. if (!(typeof os !== 'undefined' && ['win32', 'cygwin'].includes(os.platform))) { // from test262/test/built-ins/Date/UTC/fp-evaluation-order.js assert(Date.UTC(1970, 0, 1, 80063993375, 29, 1, -288230376151711740), 29312, 'order of operations / precision in MakeTime'); assert(Date.UTC(1970, 0, 213503982336, 0, 0, 0, -18446744073709552000), 34447360, 'precision in MakeDate'); } //assert(Date.UTC(2017 - 1e9, 9 + 12e9), 1506816000000); // node fails this assert(Date.UTC(2017, 9, 22 - 1e10, 18 + 24e10), 1508695200000); assert(Date.UTC(2017, 9, 22, 18 - 1e10, 10 + 60e10), 1508695800000); assert(Date.UTC(2017, 9, 22, 18, 10 - 1e10, 11 + 60e10), 1508695811000); assert(Date.UTC(2017, 9, 22, 18, 10, 11 - 1e12, 91 + 1000e12), 1508695811091); } function test_regexp() { var a, str; str = "abbbbbc"; a = /(b+)c/.exec(str); assert(a[0], "bbbbbc"); assert(a[1], "bbbbb"); assert(a.index, 1); assert(a.input, str); a = /(b+)c/.test(str); assert(a, true); assert(/\x61/.exec("a")[0], "a"); assert(/\u0061/.exec("a")[0], "a"); assert(/\ca/.exec("\x01")[0], "\x01"); assert(/\\a/.exec("\\a")[0], "\\a"); assert(/\c0/.exec("\\c0")[0], "\\c0"); a = /(\.(?=com|org)|\/)/.exec("ah.com"); assert(a.index === 2 && a[0] === "."); a = /(\.(?!com|org)|\/)/.exec("ah.com"); assert(a, null); a = /(?=(a+))/.exec("baaabac"); assert(a.index === 1 && a[0] === "" && a[1] === "aaa"); a = /(z)((a+)?(b+)?(c))*/.exec("zaacbbbcac"); assert(a, ["zaacbbbcac","z","ac","a",,"c"]); a = eval("/\0a/"); assert(a.toString(), "/\0a/"); assert(a.exec("\0a")[0], "\0a"); assert(/{1a}/.toString(), "/{1a}/"); a = /a{1+/.exec("a{11"); assert(a, ["a{11"]); /* test zero length matches */ a = /(?:(?=(abc)))a/.exec("abc"); assert(a, ["a", "abc"]); a = /(?:(?=(abc)))?a/.exec("abc"); assert(a, ["a", undefined]); a = /(?:(?=(abc))){0,2}a/.exec("abc"); assert(a, ["a", undefined]); a = /(?:|[\w])+([0-9])/.exec("123a23"); assert(a, ["123a23", "3"]); a = /()*?a/.exec(","); assert(a, null); } function test_symbol() { var a, b, obj, c; a = Symbol("abc"); obj = {}; obj[a] = 2; assert(obj[a], 2); assert(typeof obj["abc"], "undefined"); assert(String(a), "Symbol(abc)"); b = Symbol("abc"); assert(a == a); assert(a === a); assert(a != b); assert(a !== b); b = Symbol.for("abc"); c = Symbol.for("abc"); assert(b === c); assert(b !== a); assert(Symbol.keyFor(b), "abc"); assert(Symbol.keyFor(a), undefined); a = Symbol("aaa"); assert(a.valueOf(), a); assert(a.toString(), "Symbol(aaa)"); b = Object(a); assert(b.valueOf(), a); assert(b.toString(), "Symbol(aaa)"); } function test_map() { var a, i, n, tab, o, v; n = 1000; a = new Map(); for (var i = 0; i < n; i++) { a.set(i, i); } a.set(-2147483648, 1); assert(a.get(-2147483648), 1); assert(a.get(-2147483647 - 1), 1); assert(a.get(-2147483647.5 - 0.5), 1); a.set(1n, 1n); assert(a.get(1n), 1n); assert(a.get(2n**1000n - (2n**1000n - 1n)), 1n); a = new Map(); tab = []; for(i = 0; i < n; i++) { v = { }; o = { id: i }; tab[i] = [o, v]; a.set(o, v); } assert(a.size, n); for(i = 0; i < n; i++) { assert(a.get(tab[i][0]), tab[i][1]); } i = 0; a.forEach(function (v, o) { assert(o, tab[i++][0]); assert(a.has(o)); assert(a.delete(o)); assert(!a.has(o)); }); assert(a.size, 0); } function test_weak_map() { var a, i, n, tab, o, v, n2; a = new WeakMap(); n = 10; tab = []; for(i = 0; i < n; i++) { v = { }; o = { id: i }; tab[i] = [o, v]; a.set(o, v); } o = null; n2 = n >> 1; for(i = 0; i < n2; i++) { a.delete(tab[i][0]); } for(i = n2; i < n; i++) { tab[i][0] = null; /* should remove the object from the WeakMap too */ } /* the WeakMap should be empty here */ // test symbol as key var symbol_key = Symbol("key"); a = new WeakMap(); a.set(symbol_key, "hello"); assert(a.has(symbol_key), true); assert(a.get(symbol_key), "hello"); symbol_key = undefined; assert(a.has(symbol_key), false); assert(a.get(symbol_key), undefined); } function test_weak_ref() { (function case_object() { var obj = {}; var ref = new WeakRef(obj); var ref2 = new WeakRef(obj); assert(ref.deref(), obj); assert(ref2.deref(), obj); obj = undefined; /* weak ref should be released */ assert(ref.deref(), undefined); assert(ref2.deref(), undefined); })(); (function case_symbol() { var sym = Symbol("sym") var ref3 = new WeakRef(sym); assert(ref3.deref(), sym); sym = undefined; assert(ref3.deref(), undefined); new WeakRef(Symbol.hasInstance); })(); (function case_bad_param() { function should_fail(block) { try { block() } catch (e) { return } throw_error("weak ref should throw exception, but it not"); } should_fail(() => new WeakRef("string")); should_fail(() => new WeakRef(/* number */0)); should_fail(() => new WeakRef(/* registered symbol */ Symbol.for("test"))); })(); (function case_cycle_ref() { var obj = {}; var ref = new WeakRef(obj); obj["x"] = ref; })(); std.gc(); (function case_lots_of_weak() { var size = 1000; var objs = new Array(size); var weak1 = new Array(size); var weak2 = new Array(size); for (var i = 0; i < size; i++) { objs[i] = { index: i }; weak1[i] = new WeakRef(objs[i]); weak2[i] = new WeakRef(objs[i]); } for (var i = 0; i < size; i++) { assert(weak1[i].deref(), objs[i]); assert(weak2[i].deref(), objs[i]); } for (var i = 0; i < size / 2; i++) { objs[i] = undefined; } for (var i = 0; i < size / 2; i++) { assert(weak1[i].deref(), undefined); assert(weak2[i].deref(), undefined); } weak1 = undefined; weak2 = undefined; objs = undefined; })(); } function test_generator() { function *f() { var ret; yield 1; ret = yield 2; assert(ret, "next_arg"); return 3; } function *f2() { yield 1; yield 2; return "ret_val"; } function *f1() { var ret = yield *f2(); assert(ret, "ret_val"); return 3; } function *f3() { var ret; /* test stack consistency with nip_n to handle yield return + * finally clause */ try { ret = 2 + (yield 1); } catch(e) { } finally { ret++; } return ret; } var g, v; g = f(); v = g.next(); assert(v.value === 1 && v.done === false); v = g.next(); assert(v.value === 2 && v.done === false); v = g.next("next_arg"); assert(v.value === 3 && v.done === true); v = g.next(); assert(v.value === undefined && v.done === true); g = f1(); v = g.next(); assert(v.value === 1 && v.done === false); v = g.next(); assert(v.value === 2 && v.done === false); v = g.next(); assert(v.value === 3 && v.done === true); v = g.next(); assert(v.value === undefined && v.done === true); g = f3(); v = g.next(); assert(v.value === 1 && v.done === false); v = g.next(3); assert(v.value === 6 && v.done === true); } test(); test_function(); test_enum(); test_array(); test_string(); test_math(); test_number(); test_eval(); test_typed_array(); test_json(); test_date(); test_regexp(); test_symbol(); test_map(); test_weak_map(); test_weak_ref(); test_generator();