LibJS: Convert all remaining non-Array tests to the new system :)

Libraries/LibJS/Tests/functions/function-rest-params.js

@@ -1,57 +1,47 @@
-load("test-common.js");
-
-try {
+test("rest parameter with no arguments", () => {
   function foo(...a) {
-    assert(a instanceof Array);
-    assert(a.length === 0);
+    expect(a).toBeInstanceOf(Array);
+    expect(a).toHaveLength(0);
   }
   foo();
+});
 
-  function foo1(...a) {
-    assert(a instanceof Array);
-    assert(a.length === 4);
-    assert(a[0] === "foo");
-    assert(a[1] === 123);
-    assert(a[2] === undefined);
-    assert(a[3].foo === "bar");
+test("rest parameter with arguments", () => {
+  function foo(...a) {
+    expect(a).toEqual(["foo", 123, undefined, { foo: "bar" }]);
   }
-  foo1("foo", 123, undefined, { foo: "bar" });
+  foo("foo", 123, undefined, { foo: "bar" });
+});
 
-  function foo2(a, b, ...c) {
-    assert(a === "foo");
-    assert(b === 123);
-    assert(c instanceof Array);
-    assert(c.length === 0);
+test("rest parameter after normal parameters with no arguments", () => {
+  function foo(a, b, ...c) {
+    expect(a).toBe("foo");
+    expect(b).toBe(123);
+    expect(c).toEqual([]);
   }
-  foo2("foo", 123);
+  foo("foo", 123);
+});
 
-  function foo3(a, b, ...c) {
-    assert(a === "foo");
-    assert(b === 123);
-    assert(c instanceof Array);
-    assert(c.length === 2);
-    assert(c[0] === undefined);
-    assert(c[1].foo === "bar");
+test("rest parameter after normal parameters with arguments", () => {
+  function foo(a, b, ...c) {
+    expect(a).toBe("foo");
+    expect(b).toBe(123);
+    expect(c).toEqual([undefined, { foo: "bar" }]);
   }
-  foo3("foo", 123, undefined, { foo: "bar" });
+  foo("foo", 123, undefined, { foo: "bar" });
+});
 
-  var foo = (...a) => {
-    assert(a instanceof Array);
-    assert(a.length === 0);
+test("basic arrow function rest parameters", () => {
+  let foo = (...a) => {
+    expect(a).toBeInstanceOf(Array);
+    expect(a).toHaveLength(0);
   };
   foo();
 
-  var foo = (a, b, ...c) => {
-    assert(a === "foo");
-    assert(b === 123);
-    assert(c instanceof Array);
-    assert(c.length === 2);
-    assert(c[0] === undefined);
-    assert(c[1].foo === "bar");
+  foo = (a, b, ...c) => {
+    expect(a).toBe("foo");
+    expect(b).toBe(123);
+    expect(c).toEqual([undefined, { foo: "bar" }]);
   };
   foo("foo", 123, undefined, { foo: "bar" });
-
-  console.log("PASS");
-} catch (e) {
-  console.log("FAIL: " + e);
-}
+});