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describe("parsing freestanding generators", () => {
test("simple", () => {
expect(`function* foo() {}`).toEval();
expect(`function *foo() {}`).toEval();
expect(`function
*foo() {}`).toEval();
});
test("yield expression", () => {
expect(`function* foo() { yield; }`).toEval();
expect(`function* foo() { yield (yield); }`).toEval();
expect(`function* foo() { yield (yield foo); }`).toEval();
expect(`function foo() { yield; }`).toEval();
expect(`function foo() { yield 3; }`).not.toEval();
});
test("yield-from expression", () => {
expect(`function* foo() { yield *bar; }`).toEval();
expect(`function* foo() { yield *(yield); }`).toEval();
expect(`function* foo() { yield
*bar; }`).not.toEval();
expect(`function foo() { yield
*bar; }`).toEval();
});
});
describe("parsing object literal generator functions", () => {
test("simple", () => {
expect(`x = { *foo() { } }`).toEval();
expect(`x = { * foo() { } }`).toEval();
expect(`x = { *
foo() { } }`).toEval();
});
test("yield", () => {
expect(`x = { foo() { yield; } }`).toEval();
expect(`x = { *foo() { yield; } }`).toEval();
expect(`x = { *foo() { yield 42; } }`).toEval();
expect(`x = { foo() { yield 42; } }`).not.toEval();
expect(`x = { *foo() { yield (yield); } }`).toEval();
expect(`x = { *
foo() { yield (yield); } }`).toEval();
});
});
describe("parsing classes with generator methods", () => {
test("simple", () => {
expect(`class Foo { *foo() {} }`).toEval();
expect(`class Foo { static *foo() {} }`).toEval();
expect(`class Foo { *foo() { yield; } }`).toEval();
expect(`class Foo { *foo() { yield 42; } }`).toEval();
expect(`class Foo { *constructor() { yield 42; } }`).not.toEval();
});
});
test("function expression names equal to 'yield'", () => {
expect(`function *foo() { (function yield() {}); }`).toEval();
expect(`function *foo() { function yield() {} }`).not.toEval();
});
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