LibWeb: Add more document tests, add comment, text and mixin tests

Also adds a TypeScript definition file for the test runner object.

Libraries/LibWeb/Tests/DOM/Comment.js

@@ -0,0 +1,15 @@
+loadPage("file:///home/anon/web-tests/Pages/Comment.html");
+
+afterInitialPageLoad(() => {
+    test("Basic functionality", () => {
+        const comment = document.body.firstChild.nextSibling;
+        expect(comment).not.toBeNull();
+
+        // FIXME: Add this in once Comment's constructor is implemented.
+        //expect(comment).toBeInstanceOf(Comment);
+
+        expect(comment.nodeName).toBe("#comment");
+        expect(comment.data).toBe("This is a comment");
+        expect(comment).toHaveLength(17);
+    });
+});

Libraries/LibWeb/Tests/DOM/Text.js

@@ -2,7 +2,12 @@ loadPage("file:///res/html/misc/blank.html");
 
 afterInitialPageLoad(() => {
     test("Basic functionality", () => {
-        var title = document.getElementsByTagName("title")[0];
+        const title = document.getElementsByTagName("title")[0];
+        expect(title).toBeDefined();
+
+        // FIXME: Add this in once Text's constructor is implemented.
+        //expect(title.firstChild).toBeInstanceOf(Text);
+
         expect(title.firstChild.nodeName).toBe("#text");
         expect(title.firstChild.data).toBe("Blank");
         expect(title.firstChild.length).toBe(5);

Libraries/LibWeb/Tests/DOM/document.createComment.js

@@ -0,0 +1,13 @@
+loadPage("file:///res/html/misc/blank.html");
+
+afterInitialPageLoad(() => {
+    test("Basic functionality", () => {
+        const comment = document.createComment("Create Comment Test");
+
+        // FIXME: Add this in once Comment's constructor is implemented.
+        //expect(comment).toBeInstanceOf(Comment);
+        expect(comment.nodeName).toBe("#comment");
+        expect(comment.data).toBe("Create Comment Test");
+        expect(comment.length).toBe(19);
+    });
+});

Libraries/LibWeb/Tests/DOM/document.createDocumentFragment.js

@@ -0,0 +1,11 @@
+loadPage("file:///res/html/misc/blank.html");
+
+afterInitialPageLoad(() => {
+    test("Basic functionality", () => {
+        const fragment = document.createDocumentFragment();
+
+        // FIXME: Add this in once DocumentFragment's constructor is implemented.
+        //expect(fragment).toBeInstanceOf(DocumentFragment);
+        expect(fragment.nodeName).toBe("#document-fragment");
+    });
+});

Libraries/LibWeb/Tests/DOM/document.createTextNode.js

@@ -0,0 +1,13 @@
+loadPage("file:///res/html/misc/blank.html");
+
+afterInitialPageLoad(() => {
+    test("Basic functionality", () => {
+        const text = document.createTextNode("Create Text Test");
+
+        // FIXME: Add this in once Text's constructor is implemented.
+        //expect(text).toBeInstanceOf(Text);
+        expect(text.nodeName).toBe("#text");
+        expect(text.data).toBe("Create Text Test");
+        expect(text.length).toBe(16);
+    });
+});

Libraries/LibWeb/Tests/DOM/document.doctype.js

@@ -3,7 +3,7 @@ loadPage("file:///res/html/misc/blank.html");
 afterInitialPageLoad(() => {
     test("Basic functionality", () => {
         expect(document.compatMode).toBe("CSS1Compat");
-        expect(document.doctype).not.toBe(null);
+        expect(document.doctype).not.toBeNull();
         expect(document.doctype.name).toBe("html");
         expect(document.doctype.publicId).toBe("");
         expect(document.doctype.systemId).toBe("");
@@ -13,6 +13,6 @@ afterInitialPageLoad(() => {
 
     test("Quirks mode", () => {
         expect(document.compatMode).toBe("BackCompat");
-        expect(document.doctype).toBe(null);
+        expect(document.doctype).toBeNull();
     });
 });

Libraries/LibWeb/Tests/DOM/document.documentElement.js

@@ -2,7 +2,15 @@ loadPage("file:///res/html/misc/blank.html");
 
 afterInitialPageLoad(() => {
     test("Basic functionality", () => {
-        expect(document.documentElement).not.toBe(null);
+        expect(document.documentElement).not.toBeNull();
+        // FIXME: Add this in once HTMLHtmlElement's constructor is implemented.
+        //expect(document.documentElement).toBeInstanceOf(HTMLHtmlElement);
         expect(document.documentElement.nodeName).toBe("html");
     });
+
+    // FIXME: Add this in once removeChild is implemented.
+    test.skip("Nullable", () => {
+        document.removeChild(document.documentElement);
+        expect(document.documentElement).toBeNull();
+    });
 });

Libraries/LibWeb/Tests/DOM/mixins/NonElementParentNode.js

@@ -0,0 +1,19 @@
+loadPage("file:///home/anon/web-tests/Pages/ParentNode.html");
+
+afterInitialPageLoad(() => {
+    test("getElementById basics", () => {
+        const unique = document.getElementById("unique");
+        expect(unique).not.toBeNull();
+        expect(unique.nodeName).toBe("div");
+        expect(unique.id).toBe("unique");
+
+        const caseSensitive = document.getElementById("Unique");
+        expect(caseSensitive).toBeNull();
+
+        const firstDuplicate = document.getElementById("dupeId");
+        expect(firstDuplicate).not.toBeNull();
+        expect(firstDuplicate.nodeName).toBe("div");
+        expect(firstDuplicate.id).toBe("dupeId");
+        expect(firstDuplicate.innerHTML).toBe("First ID");
+    });
+});

Libraries/LibWeb/Tests/DOM/mixins/ParentNode.js

@@ -0,0 +1,25 @@
+loadPage("file:///home/anon/web-tests/Pages/ParentNode.html");
+
+afterInitialPageLoad(() => {
+    test("querySelector basics", () => {
+        const firstDuplicateElement = document.querySelector(".duplicate");
+        expect(firstDuplicateElement).not.toBeNull();
+        expect(firstDuplicateElement.nodeName).toBe("div");
+        expect(firstDuplicateElement.innerHTML).toBe("First");
+
+        const noElement = document.querySelector(".nonexistent");
+        expect(noElement).toBeNull();
+    });
+
+    test("querySelectorAll basics", () => {
+        const allDuplicates = document.querySelectorAll(".duplicate");
+        expect(allDuplicates).toHaveLength(2);
+        expect(allDuplicates[0].nodeName).toBe("div");
+        expect(allDuplicates[0].innerHTML).toBe("First");
+        expect(allDuplicates[1].nodeName).toBe("div");
+        expect(allDuplicates[1].innerHTML).toBe("Second");
+
+        const noElements = document.querySelectorAll(".nonexistent");
+        expect(noElements).toHaveLength(0);
+    });
+});