feat(link): add download attribute to <sp-link>

address some PR comments, make download a separate unit test and add docs to README

packages/link/README.md

@@ -55,6 +55,19 @@ When a link needs to be placed on top of a colored background or a visual, use t
 </div>
 ```
 
+### Download attribute
+
+The download attribute on an `html<a>` tag prompts a user to download a link as opposed to navigating to it. This attribute has
+simply been carried forward to `html<sp-link>` to function the same.
+
+While it functions this way without assigning a value, actually assigning the value allows custom naming of the download link in accordance
+with normal `html<a>` [rules](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/a) defined by the browser.
+
+<!-- prettier-ignore -->
+```html
+This is a <sp-link download="myfile.txt" href="#">download link</sp-link>.
+```
+
 ## Accessibility
 
 Links are accessible by default, rendered in HTML using the `<a>` element. The correct aria roles will automatically be applied.

packages/link/test/link.test.ts

@@ -16,6 +16,32 @@ import { fixture, elementUpdated, html, expect } from '@open-wc/testing';
 
 describe('Link', () => {
     it('loads', async () => {
+        const el = await fixture<Link>(
+            html`
+                <sp-link href="test_url">
+                    Default Link
+                </sp-link>
+            `
+        );
+
+        const dlel = await fixture<Link>(
+            html`
+                <sp-link href="test_url" download="somefile.txt">
+                    Default Link
+                </sp-link>
+            `
+        );
+
+        await elementUpdated(el);
+        expect(el).to.not.be.undefined;
+        expect(el.textContent).to.include('Default Link');
+        // make sure href is being passed to <a>
+        expect(el).shadowDom.to.equal(
+            `<a href="test_url" id="anchor" tabindex="0"><slot></slot></a>`
+        );
+    });
+
+    it('loads[download]', async () => {
         const el = await fixture<Link>(
             html`
                 <sp-link href="test_url" download="somefile.txt">