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https://github.com/RGBCube/serenity
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3ceedbd16a
See: https://tc39.es/ecma262/#sec-runtime-semantics-propertydefinitionevaluation PropertyDefinition : ... AssignmentExpression Also add a test for this in array spreading, which already had this in place.
45 lines
1.5 KiB
JavaScript
45 lines
1.5 KiB
JavaScript
describe("errors", () => {
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test("cannot spread number in array", () => {
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expect(() => {
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[...1];
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}).toThrowWithMessage(TypeError, "1 is not iterable");
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});
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test("cannot spread object in array", () => {
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expect(() => {
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[...{}];
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}).toThrowWithMessage(TypeError, "[object Object] is not iterable");
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});
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});
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test("basic functionality", () => {
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expect([1, ...[2, 3], 4]).toEqual([1, 2, 3, 4]);
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let a = [2, 3];
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expect([1, ...a, 4]).toEqual([1, 2, 3, 4]);
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let obj = { a: [2, 3] };
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expect([1, ...obj.a, 4]).toEqual([1, 2, 3, 4]);
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expect([...[], ...[...[1, 2, 3]], 4]).toEqual([1, 2, 3, 4]);
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});
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test("allows assignment expressions", () => {
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expect("([ ...a = { hello: 'world' } ])").toEval();
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expect("([ ...a += 'hello' ])").toEval();
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expect("([ ...a -= 'hello' ])").toEval();
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expect("([ ...a **= 'hello' ])").toEval();
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expect("([ ...a *= 'hello' ])").toEval();
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expect("([ ...a /= 'hello' ])").toEval();
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expect("([ ...a %= 'hello' ])").toEval();
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expect("([ ...a <<= 'hello' ])").toEval();
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expect("([ ...a >>= 'hello' ])").toEval();
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expect("([ ...a >>>= 'hello' ])").toEval();
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expect("([ ...a &= 'hello' ])").toEval();
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expect("([ ...a ^= 'hello' ])").toEval();
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expect("([ ...a |= 'hello' ])").toEval();
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expect("([ ...a &&= 'hello' ])").toEval();
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expect("([ ...a ||= 'hello' ])").toEval();
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expect("([ ...a ??= 'hello' ])").toEval();
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expect("function* test() { return ([ ...yield a ]); }").toEval();
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});
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