95 lines
1.7 KiB
JavaScript
95 lines
1.7 KiB
JavaScript
function assert(b) {
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if (!b)
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throw new Error("Bad");
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}
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function test(f) {
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noInline(f);
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for (let i = 0; i < 1000; ++i)
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f();
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}
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function shouldThrowSyntaxError(script) {
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let error;
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try {
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eval(script);
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} catch (e) {
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error = e;
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}
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if (!(error instanceof SyntaxError))
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throw new Error('Expected SyntaxError!');
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}
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test(function() {
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let o = {xx: 0};
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for (let i in o) {
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for (i in [0, 1, 2]) { }
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assert(typeof i === "string");
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assert(o[i] === undefined);
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}
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});
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test(function() {
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let o = {xx: 0};
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for (let i in o) {
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for ({i} of [{i: 0}]) { }
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assert(typeof i === "number");
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assert(o[i] === undefined);
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}
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});
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test(function() {
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let o = {xx: 0};
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for (let i in o) {
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;({i} = {i: 0});
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assert(typeof i === "number");
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assert(o[i] === undefined);
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}
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});
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test(function() {
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let o = {xx: 0};
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for (let i in o) {
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;([i] = [0]);
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assert(typeof i === "number");
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assert(o[i] === undefined);
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}
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});
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test(function() {
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let o = {xx: 0};
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for (let i in o) {
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;({...i} = {a:20, b:30});
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assert(typeof i === "object");
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assert(o[i] === undefined);
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}
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});
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test(function() {
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let o = {xx: 0};
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for (let i in o) {
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eval("i = 0;");
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assert(typeof i === "number");
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assert(o[i] === undefined);
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}
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});
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shouldThrowSyntaxError(
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`function f() {
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let o = {xx: 0};
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for (let i in o) {
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for (var i of [0]) { }
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}
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}`
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);
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shouldThrowSyntaxError(
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`function f() {
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let o = {xx: 0};
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for (let i in o) {
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var i = 0;
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}
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}`
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);
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