mirror of
https://github.com/tc39/test262.git
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e9a5a7f918
* [javascriptcore-test262-automation] changes from git@github.com:WebKit/webkit.git at sha 949e26452cfa153a7f4afe593da97e2fe9e1b706 on Tue Jul 03 2018 14:35:15 GMT-0400 (Eastern Daylight Time)
442 lines
8.0 KiB
JavaScript
442 lines
8.0 KiB
JavaScript
function shouldBe(actual, expected) {
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if (actual !== expected)
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throw new Error('bad value: ' + actual);
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}
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function shouldThrow(func, errorMessage) {
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var errorThrown = false;
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var error = null;
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try {
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func();
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} catch (e) {
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errorThrown = true;
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error = e;
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}
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if (!errorThrown)
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throw new Error('not thrown');
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if (String(error) !== errorMessage)
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throw new Error(`bad error: ${String(error)}`);
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}
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(function () {
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var [a, b, c] = [1, 2, 3];
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shouldBe(a, 1);
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shouldBe(b, 2);
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shouldBe(c, 3);
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}());
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(function () {
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var [a, b, c] = [1, 2, 3].keys();
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shouldBe(a, 0);
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shouldBe(b, 1);
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shouldBe(c, 2);
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}());
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(function () {
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var [a, b, c] = [1, 2, 3].values();
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shouldBe(a, 1);
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shouldBe(b, 2);
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shouldBe(c, 3);
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}());
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(function () {
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var [a, , c] = [1, 2, 3].values();
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shouldBe(a, 1);
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shouldBe(c, 3);
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}());
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(function () {
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var [a, b, c] = [1, , 3].values();
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shouldBe(a, 1);
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shouldBe(b, undefined);
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shouldBe(c, 3);
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}());
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(function () {
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var [, b, c] = [1, 2, 3, 4, 5, 6].values();
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shouldBe(b, 2);
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shouldBe(c, 3);
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}());
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(function () {
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var [a, b, c] = [1].values();
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shouldBe(a, 1);
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shouldBe(b, undefined);
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shouldBe(c, undefined);
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}());
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(function ([a, b, c]) {
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shouldBe(a, 1);
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shouldBe(b, undefined);
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shouldBe(c, undefined);
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}([1].values()));
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(function () {
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var [a = 0, b = 2, c = 3] = [1].values();
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shouldBe(a, 1);
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shouldBe(b, 2);
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shouldBe(c, 3);
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}());
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(function () {
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var [a = 1, b = 2, c = 3] = [undefined, undefined, undefined];
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shouldBe(a, 1);
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shouldBe(b, 2);
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shouldBe(c, 3);
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}());
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// String with a surrogate pair.
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(function () {
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var string = "𠮷野家";
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var [a, b, c] = string;
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shouldBe(string.length, 4);
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shouldBe(a, '𠮷');
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shouldBe(b, '野');
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shouldBe(c, '家');
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}());
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(function () {
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var set = new Set([1, 2, 3]);
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var [a, b, c] = set;
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shouldBe(set.has(a), true);
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shouldBe(set.has(b), true);
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shouldBe(set.has(c), true);
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}());
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(function () {
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var map = new Map([[1, 1], [2, 2], [3, 3]]);
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var [a, b, c] = map;
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shouldBe(Array.isArray(a), true);
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shouldBe(Array.isArray(b), true);
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shouldBe(Array.isArray(c), true);
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shouldBe(map.has(a[0]), true);
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shouldBe(map.has(b[0]), true);
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shouldBe(map.has(c[0]), true);
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}());
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// Errors
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shouldThrow(function () {
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var [a, b, c] = {
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[Symbol.iterator]() {
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return 42;
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}
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};
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}, "TypeError: undefined is not a function (near '...[a, b, c]...')");
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shouldThrow(function () {
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var [a, b, c] = {
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[Symbol.iterator]() {
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return {};
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}
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};
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}, "TypeError: undefined is not a function (near '...[a, b, c]...')");
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shouldThrow(function () {
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var [a, b, c] = {
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[Symbol.iterator]() {
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return this;
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},
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next() {
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throw new Error('out');
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}
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};
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}, 'Error: out');
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shouldThrow(function () {
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var [a, b, c] = {
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[Symbol.iterator]() {
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return this;
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},
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next() {
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return 42;
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}
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};
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}, 'TypeError: Iterator result interface is not an object.');
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(function () {
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var ok = 0;
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shouldThrow(function () {
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var [a, b, c] = {
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[Symbol.iterator]() {
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return this;
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},
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return() {
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ok++;
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},
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next() {
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return 42;
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}
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};
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}, 'TypeError: Iterator result interface is not an object.');
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shouldBe(ok, 0);
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}());
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(function () {
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var ok = 0;
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shouldThrow(function () {
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var [a, b, c] = {
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[Symbol.iterator]() {
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return this;
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},
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return() {
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ok++;
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},
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next() {
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return { value: 20, done: false };
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}
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};
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}, 'TypeError: Iterator result interface is not an object.');
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shouldBe(ok, 1);
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}());
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(function () {
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var ok = 0;
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var [a, b, c] = {
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[Symbol.iterator]() {
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return this;
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},
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return() {
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ok++;
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},
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next() {
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return { value: 20, done: true };
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}
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};
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shouldBe(a, undefined);
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shouldBe(b, undefined);
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shouldBe(c, undefined);
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shouldBe(ok, 0);
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}());
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(function () {
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var ok = 0;
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var n = 0;
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var done = false;
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var [a, b, c] = {
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[Symbol.iterator]() {
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return this;
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},
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return() {
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ok++;
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},
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next() {
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var prev = done;
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done = true;
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++n;
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return { value: 20, done: prev };
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}
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};
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shouldBe(a, 20);
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shouldBe(b, undefined);
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shouldBe(c, undefined);
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shouldBe(n, 2);
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shouldBe(ok, 0);
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}());
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(function () {
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var ok = 0;
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var n = 0;
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var done = false;
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var [a, b, c] = {
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[Symbol.iterator]() {
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return this;
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},
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return() {
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++ok;
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return { done: true };
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},
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next() {
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++n;
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return { value: 20, done: false };
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}
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};
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shouldBe(a, 20);
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shouldBe(b, 20);
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shouldBe(c, 20);
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shouldBe(n, 3);
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shouldBe(ok, 1);
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}());
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(function () {
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var ok = 0;
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var n = 0;
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var done = false;
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var [a, b, c] = {
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[Symbol.iterator]() {
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return this;
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},
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return() {
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++ok;
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return { done: true };
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},
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count: 0,
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next() {
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++n;
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var done = ++this.count === 3;
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return { value: 20, done };
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}
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};
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shouldBe(a, 20);
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shouldBe(b, 20);
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shouldBe(c, undefined);
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shouldBe(n, 3);
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shouldBe(ok, 0);
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}());
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(function () {
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var ok = 0;
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var n = 0;
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var done = false;
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var [a, b, c] = {
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[Symbol.iterator]() {
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return this;
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},
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return() {
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++ok;
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return { done: true };
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},
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count: 0,
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next() {
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++n;
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var done = ++this.count === 4;
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return { value: 20, done };
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}
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};
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shouldBe(a, 20);
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shouldBe(b, 20);
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shouldBe(c, 20);
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shouldBe(n, 3);
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shouldBe(ok, 1);
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}());
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(function () {
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var ok = 0;
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var n = 0;
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shouldThrow(function () {
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var [a, b, c] = {
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[Symbol.iterator]() {
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return this;
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},
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return() {
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ok++;
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throw new Error('out');
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},
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next() {
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n++;
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return { value: 20, done: false };
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}
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};
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}, 'Error: out');
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shouldBe(n, 3);
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shouldBe(ok, 1);
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}());
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(function () {
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var ok = 0;
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var n = 0;
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shouldThrow(function () {
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var [a, b, c] = {
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[Symbol.iterator]() {
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return this;
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},
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get return() {
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ok++;
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throw new Error('out');
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},
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next() {
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n++;
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return { value: 20, done: false };
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}
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};
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}, 'Error: out');
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shouldBe(n, 3);
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shouldBe(ok, 1);
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}());
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(function () {
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var ok = 0;
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var n = 0;
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shouldThrow(function () {
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var [a, b, c] = {
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[Symbol.iterator]() {
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return this;
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},
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get return() {
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ok++;
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throw new Error('ng');
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},
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next() {
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n++;
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throw new Error('out');
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}
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};
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}, 'Error: out');
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shouldBe(n, 1);
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shouldBe(ok, 0);
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}());
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(function () {
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var ok = 0;
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var n = 0;
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shouldThrow(function () {
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var [a, b, c] = {
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[Symbol.iterator]() {
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return this;
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},
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get return() {
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ok++;
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throw new Error('ng');
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},
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get next() {
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++n;
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throw new Error('out');
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}
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};
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}, 'Error: out');
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shouldBe(n, 1);
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shouldBe(ok, 0);
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}());
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