LibJS: Move tests to /Tests/LibJS

Author: https://github.com/gmta
Commit: https://github.com/LadybirdBrowser/ladybird/commit/e3faa9b5add
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/7572
Reviewed-by: https://github.com/trflynn89 ✅

Tests/LibJS/Runtime/loops/do-while-basic.js

@@ -0,0 +1,24 @@
+test("basic functionality", () => {
+    let number = 0;
+    do {
+        number++;
+    } while (number < 9);
+    expect(number).toBe(9);
+});
+
+test("no braces", () => {
+    let number = 0;
+    do number++;
+    while (number < 3);
+    expect(number).toBe(3);
+});
+
+test("exception in test expression", () => {
+    expect(() => {
+        do {} while (foo);
+    }).toThrow(ReferenceError);
+});
+
+test("automatic semicolon insertion", () => {
+    expect("do {} while (false) foo").toEval();
+});