Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibJS/Tests/builtins/SharedArrayBuffer/SharedArrayBuffer.js

@@ -0,0 +1,19 @@
+test("basic functionality", () => {
+    expect(SharedArrayBuffer).toHaveLength(1);
+    expect(SharedArrayBuffer.name).toBe("SharedArrayBuffer");
+    expect(SharedArrayBuffer.prototype.constructor).toBe(SharedArrayBuffer);
+    expect(new SharedArrayBuffer()).toBeInstanceOf(SharedArrayBuffer);
+    expect(typeof new SharedArrayBuffer()).toBe("object");
+});
+
+test("SharedArrayBuffer constructor must be invoked with 'new'", () => {
+    expect(() => {
+        SharedArrayBuffer();
+    }).toThrowWithMessage(TypeError, "SharedArrayBuffer constructor must be called with 'new'");
+});
+
+test("SharedArrayBuffer size limit", () => {
+    expect(() => {
+        new SharedArrayBuffer(2 ** 53);
+    }).toThrowWithMessage(RangeError, "Invalid shared array buffer length");
+});

Libraries/LibJS/Tests/builtins/SharedArrayBuffer/SharedArrayBuffer.prototype.byteLength.js

@@ -0,0 +1,21 @@
+describe("errors", () => {
+    test("called on non-SharedArrayBuffer object", () => {
+        expect(() => {
+            SharedArrayBuffer.prototype.byteLength;
+        }).toThrowWithMessage(TypeError, "Not an object of type SharedArrayBuffer");
+
+        let byteLength = Object.getOwnPropertyDescriptor(SharedArrayBuffer.prototype, "byteLength");
+        let getter = byteLength.get;
+
+        expect(() => {
+            getter.call(new ArrayBuffer());
+        }).toThrowWithMessage(TypeError, "The array buffer object must be a SharedArrayBuffer");
+    });
+});
+
+test("basic functionality", () => {
+    expect(new SharedArrayBuffer().byteLength).toBe(0);
+    expect(new SharedArrayBuffer(1).byteLength).toBe(1);
+    expect(new SharedArrayBuffer(64).byteLength).toBe(64);
+    expect(new SharedArrayBuffer(123).byteLength).toBe(123);
+});

Libraries/LibJS/Tests/builtins/SharedArrayBuffer/SharedArrayBuffer.prototype.slice.js

@@ -0,0 +1,41 @@
+describe("errors", () => {
+    test("called on non-SharedArrayBuffer object", () => {
+        expect(() => {
+            SharedArrayBuffer.prototype.slice(Symbol.hasInstance);
+        }).toThrowWithMessage(TypeError, "Not an object of type SharedArrayBuffer");
+
+        expect(() => {
+            SharedArrayBuffer.prototype.slice.call(new ArrayBuffer());
+        }).toThrowWithMessage(TypeError, "The array buffer object must be a SharedArrayBuffer");
+    });
+});
+
+test("single parameter", () => {
+    const buffer = new SharedArrayBuffer(16);
+    const fullView = new Int32Array(buffer);
+
+    // modify some value that we can check in the sliced buffer
+    fullView[3] = 7;
+
+    // slice the buffer and use a new int32 view to perform basic checks
+    const slicedBuffer = buffer.slice(12);
+    const slicedView = new Int32Array(slicedBuffer);
+
+    expect(slicedView).toHaveLength(1);
+    expect(slicedView[0]).toBe(7);
+});
+
+test("both parameters", () => {
+    const buffer = new SharedArrayBuffer(16);
+    const fullView = new Int32Array(buffer);
+
+    // modify some value that we can check in the sliced buffer
+    fullView[1] = 12;
+
+    // slice the buffer and use a new int32 view to perform basic checks
+    const slicedBuffer = buffer.slice(4, 8);
+    const slicedView = new Int32Array(slicedBuffer);
+
+    expect(slicedView).toHaveLength(1);
+    expect(slicedView[0]).toBe(12);
+});