LibJS: Implement Date.getUTC*

Test files created with:
    $ for f in Libraries/LibJS/Tests/builtins/Date/Date.prototype.get*js; do
          cp $f $(echo $f | sed -e 's/get/getUTC/') ;
      done
    $ rm Libraries/LibJS/Tests/builtins/Date/Date.prototype.getUTCTime.js
    $ git add Libraries/LibJS/Tests/builtins/Date/Date.prototype.getUTC*.js
    $ ls Libraries/LibJS/Tests/builtins/Date/Date.prototype.getUTC*.js | \
          xargs sed -i -e 's/get/getUTC/g'

Libraries/LibJS/Tests/builtins/Date/Date.prototype.getUTCDate.js

@@ -0,0 +1,7 @@
+test("basic functionality", () => {
+    let d = new Date();
+    expect(d.getUTCDate()).toBe(d.getUTCDate());
+    expect(d.getUTCDate()).not.toBeNaN();
+    expect(d.getUTCDate()).toBeGreaterThanOrEqual(1);
+    expect(d.getUTCDate()).toBeLessThanOrEqual(31);
+});

Libraries/LibJS/Tests/builtins/Date/Date.prototype.getUTCDay.js

@@ -0,0 +1,7 @@
+test("basic functionality", () => {
+    var d = new Date();
+    expect(d.getUTCDay()).toBe(d.getUTCDay());
+    expect(d.getUTCDay()).not.toBeNaN();
+    expect(d.getUTCDay()).toBeGreaterThanOrEqual(0);
+    expect(d.getUTCDay()).toBeLessThanOrEqual(6);
+});

Libraries/LibJS/Tests/builtins/Date/Date.prototype.getUTCFullYear.js

@@ -0,0 +1,7 @@
+test("basic functionality", () => {
+    var d = new Date();
+    expect(d.getUTCFullYear()).toBe(d.getUTCFullYear());
+    expect(d.getUTCFullYear()).not.toBeNaN();
+    expect(d.getUTCFullYear()).toBe(d.getUTCFullYear());
+    expect(d.getUTCFullYear()).toBeGreaterThanOrEqual(2020);
+});

Libraries/LibJS/Tests/builtins/Date/Date.prototype.getUTCHours.js

@@ -0,0 +1,7 @@
+test("basic functionality", () => {
+    var d = new Date();
+    expect(d.getUTCHours()).toBe(d.getUTCHours());
+    expect(d.getUTCHours()).not.toBeNaN();
+    expect(d.getUTCHours()).toBeGreaterThanOrEqual(0);
+    expect(d.getUTCHours()).toBeLessThanOrEqual(23);
+});

Libraries/LibJS/Tests/builtins/Date/Date.prototype.getUTCMilliseconds.js

@@ -0,0 +1,7 @@
+test("basic functionality", () => {
+    var d = new Date();
+    expect(d.getUTCMilliseconds()).toBe(d.getUTCMilliseconds());
+    expect(d.getUTCMilliseconds()).not.toBeNaN();
+    expect(d.getUTCMilliseconds()).toBeGreaterThanOrEqual(0);
+    expect(d.getUTCMilliseconds()).toBeLessThanOrEqual(999);
+});

Libraries/LibJS/Tests/builtins/Date/Date.prototype.getUTCMinutes.js

@@ -0,0 +1,7 @@
+test("basic functionality", () => {
+    var d = new Date();
+    expect(d.getUTCMinutes()).toBe(d.getUTCMinutes());
+    expect(d.getUTCMinutes()).not.toBeNaN();
+    expect(d.getUTCMinutes()).toBeGreaterThanOrEqual(0);
+    expect(d.getUTCMinutes()).toBeLessThanOrEqual(59);
+});

Libraries/LibJS/Tests/builtins/Date/Date.prototype.getUTCMonth.js

@@ -0,0 +1,7 @@
+test("basic functionality", () => {
+    var d = new Date();
+    expect(d.getUTCMonth()).toBe(d.getUTCMonth());
+    expect(d.getUTCMonth()).not.toBeNaN();
+    expect(d.getUTCMonth()).toBeGreaterThanOrEqual(0);
+    expect(d.getUTCMonth()).toBeLessThanOrEqual(11);
+});

Libraries/LibJS/Tests/builtins/Date/Date.prototype.getUTCSeconds.js

@@ -0,0 +1,7 @@
+test("basic functionality", () => {
+    var d = new Date();
+    expect(d.getUTCSeconds()).toBe(d.getUTCSeconds());
+    expect(d.getUTCSeconds()).not.toBeNaN();
+    expect(d.getUTCSeconds()).toBeGreaterThanOrEqual(0);
+    expect(d.getUTCSeconds()).toBeLessThanOrEqual(59);
+});