ladybird/Libraries/LibJS/Tests/operators/comma-operator.js

24 lines
530 B
JavaScript

test("inside parenthesis", () => {
expect((1, 2, 3)).toBe(3);
expect((1, 2 + 3, 4)).toBe(4);
});
test("with post-increment operator", () => {
let foo = 0;
foo = (foo++, foo);
expect(foo).toBe(1);
});
test("with assignment operator", () => {
var a, b, c;
expect(((a = b = 3), (c = 4))).toBe(4);
expect(a).toBe(3);
expect(b).toBe(3);
expect(c).toBe(4);
var x, y, z;
expect((x = ((y = 5), (z = 6)))).toBe(6);
expect(x).toBe(6);
expect(y).toBe(5);
expect(z).toBe(6);
});