Libraries: Move to Userland/Libraries/

Author: https://github.com/awesomekling
Commit: 13d7c09125

Libraries/LibJS/Tests/functions/function-default-parameters.js

@@ -1,143 +0,0 @@
-test("single default parameter", () => {
-    function func(a = 6) {
-        return typeof a;
-    }
-
-    const arrowFunc = (a = 6) => typeof a;
-
-    expect(func()).toBe("number");
-    expect(func(5)).toBe("number");
-    expect(func(undefined)).toBe("number");
-    expect(func(false)).toBe("boolean");
-    expect(func(null)).toBe("object");
-    expect(func({})).toBe("object");
-
-    expect(arrowFunc()).toBe("number");
-    expect(arrowFunc(5)).toBe("number");
-    expect(arrowFunc(undefined)).toBe("number");
-    expect(arrowFunc(false)).toBe("boolean");
-    expect(arrowFunc(null)).toBe("object");
-    expect(arrowFunc({})).toBe("object");
-});
-
-test("two parameters, second one is default", () => {
-    function func(a, b = 1) {
-        return a + b;
-    }
-
-    const arrowFunc = (a, b = 1) => a + b;
-
-    expect(func(4, 5)).toBe(9);
-    expect(func(4)).toBe(5);
-    expect(func(4, undefined)).toBe(5);
-    expect(func()).toBeNaN();
-
-    expect(arrowFunc(4, 5)).toBe(9);
-    expect(arrowFunc(4)).toBe(5);
-    expect(arrowFunc(4, undefined)).toBe(5);
-    expect(arrowFunc()).toBeNaN();
-});
-
-test("two parameters, first one is default", () => {
-    function func(a = 5, b) {
-        return a + b;
-    }
-
-    const arrowFunc = (a = 5, b) => a + b;
-
-    expect(func(4, 5)).toBe(9);
-    expect(func(undefined, 4)).toBe(9);
-    expect(func()).toBeNaN();
-
-    expect(arrowFunc(4, 5)).toBe(9);
-    expect(arrowFunc(undefined, 4)).toBe(9);
-    expect(arrowFunc()).toBeNaN();
-});
-
-test("default parameter references a previous parameter", () => {
-    function func(a, b = a) {
-        return a + b;
-    }
-
-    const arrowFunc = (a, b = a) => a + b;
-
-    expect(func(4, 5)).toBe(9);
-    expect(func(4)).toBe(8);
-    expect(func("hf")).toBe("hfhf");
-    expect(func(true)).toBe(2);
-    expect(func()).toBeNaN();
-
-    expect(arrowFunc(4, 5)).toBe(9);
-    expect(arrowFunc(4)).toBe(8);
-    expect(arrowFunc("hf")).toBe("hfhf");
-    expect(arrowFunc(true)).toBe(2);
-    expect(arrowFunc()).toBeNaN();
-});
-
-test("parameter with a function default value", () => {
-    function func(
-        a = function () {
-            return 5;
-        }
-    ) {
-        return a();
-    }
-
-    const arrowFunc = (
-        a = function () {
-            return 5;
-        }
-    ) => a();
-
-    expect(func()).toBe(5);
-    expect(
-        func(function () {
-            return 10;
-        })
-    ).toBe(10);
-    expect(func(() => 10)).toBe(10);
-
-    expect(arrowFunc()).toBe(5);
-    expect(
-        arrowFunc(function () {
-            return 10;
-        })
-    ).toBe(10);
-    expect(arrowFunc(() => 10)).toBe(10);
-});
-
-test("parameter with an arrow function default value", () => {
-    function func(a = () => 5) {
-        return a();
-    }
-
-    const arrowFunc = (a = () => 5) => a();
-
-    expect(func()).toBe(5);
-    expect(
-        func(function () {
-            return 10;
-        })
-    ).toBe(10);
-    expect(func(() => 10)).toBe(10);
-    expect(arrowFunc()).toBe(5);
-    expect(
-        arrowFunc(function () {
-            return 10;
-        })
-    ).toBe(10);
-    expect(arrowFunc(() => 10)).toBe(10);
-});
-
-test("parameter with an object default value", () => {
-    function func(a = { foo: "bar" }) {
-        return a.foo;
-    }
-
-    const arrowFunc = (a = { foo: "bar" }) => a.foo;
-
-    expect(func()).toBe("bar");
-    expect(func({ foo: "baz" })).toBe("baz");
-    expect(arrowFunc()).toBe("bar");
-    expect(arrowFunc({ foo: "baz" })).toBe("baz");
-});