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test("basic functionality", () => {
expect(function () {}.name).toBe("");
function bar() {}
expect(bar.name).toBe("bar");
expect((bar.name = "baz")).toBe("baz");
expect(bar.name).toBe("bar");
});
test("function assigned to variable", () => {
let foo = function () {};
expect(foo.name).toBe("foo");
expect((foo.name = "bar")).toBe("bar");
expect(foo.name).toBe("foo");
let a, b;
a = b = function () {};
expect(a.name).toBe("b");
expect(b.name).toBe("b");
});
test("functions in array assigned to variable", () => {
const arr = [function () {}, function () {}, function () {}];
expect(arr[0].name).toBe("arr");
expect(arr[1].name).toBe("arr");
expect(arr[2].name).toBe("arr");
});
test("functions in objects", () => {
let f;
let o = { a: function () {} };
expect(o.a.name).toBe("a");
f = o.a;
expect(f.name).toBe("a");
expect(o.a.name).toBe("a");
o = { ...o, b: f };
expect(o.a.name).toBe("a");
expect(o.b.name).toBe("a");
o.c = function () {};
expect(o.c.name).toBe("c");
});
test("names of native functions", () => {
expect(console.debug.name).toBe("debug");
expect((console.debug.name = "warn")).toBe("warn");
expect(console.debug.name).toBe("debug");
});
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