LibJS: Add tests cases for %TypedArray%.prototype.toSorted function

Author: beesaferoot

Userland/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.toSorted.js

@@ -0,0 +1,84 @@
+const TYPED_ARRAYS = [
+    Uint8Array,
+    Uint8ClampedArray,
+    Uint16Array,
+    Uint32Array,
+    Int8Array,
+    Int16Array,
+    Int32Array,
+    Float32Array,
+    Float64Array,
+];
+
+const BIGINT_TYPED_ARRAYS = [BigUint64Array, BigInt64Array];
+
+test("basic functionality", () => {
+    TYPED_ARRAYS.forEach(T => {
+        expect(T.prototype.toSorted).toHaveLength(1);
+
+        const typedArray = new T([3, 1, 2]);
+        let sortedtypedArray = typedArray.toSorted();
+        expect(sortedtypedArray).not.toBe(typedArray);
+        expect(sortedtypedArray[0]).toBe(1);
+        expect(sortedtypedArray[1]).toBe(2);
+        expect(sortedtypedArray[2]).toBe(3);
+
+        sortedtypedArray = typedArray.toSorted(() => 0);
+        expect(sortedtypedArray).not.toBe(typedArray);
+        expect(sortedtypedArray[0]).toBe(3);
+        expect(sortedtypedArray[1]).toBe(1);
+        expect(sortedtypedArray[2]).toBe(2);
+    });
+
+    BIGINT_TYPED_ARRAYS.forEach(T => {
+        expect(T.prototype.toSorted).toHaveLength(1);
+
+        const typedArray = new T([3n, 1n, 2n]);
+
+        let sortedtypedArray = typedArray.toSorted();
+        expect(sortedtypedArray).not.toBe(typedArray);
+        expect(sortedtypedArray[0]).toBe(1n);
+        expect(sortedtypedArray[1]).toBe(2n);
+        expect(sortedtypedArray[2]).toBe(3n);
+
+        sortedtypedArray = typedArray.toSorted(() => 0);
+        expect(sortedtypedArray).not.toBe(typedArray);
+        expect(sortedtypedArray[0]).toBe(3n);
+        expect(sortedtypedArray[1]).toBe(1n);
+        expect(sortedtypedArray[2]).toBe(2n);
+    });
+});
+
+describe("errors", () => {
+    test("null or undefined this value", () => {
+        TYPED_ARRAYS.forEach(T => {
+            expect(() => {
+                T.prototype.toSorted.call();
+            }).toThrowWithMessage(TypeError, "ToObject on null or undefined");
+
+            expect(() => {
+                T.prototype.toSorted.call(undefined);
+            }).toThrowWithMessage(TypeError, "ToObject on null or undefined");
+
+            expect(() => {
+                T.prototype.toSorted.call(null);
+            }).toThrowWithMessage(TypeError, "ToObject on null or undefined");
+        });
+
+        BIGINT_TYPED_ARRAYS.forEach(T => {});
+    });
+
+    test("invalid compare function", () => {
+        TYPED_ARRAYS.forEach(T => {
+            expect(() => {
+                new T([]).toSorted("foo");
+            }).toThrowWithMessage(TypeError, "foo is not a function");
+        });
+
+        BIGINT_TYPED_ARRAYS.forEach(T => {
+            expect(() => {
+                new T([]).toSorted("foo");
+            }).toThrowWithMessage(TypeError, "foo is not a function");
+        });
+    });
+});