test: first pass test.

- Cover use of header slot.
- Cover use of footer slot.
- Cover use of image slot.

src/components/card/card.test.ts

@@ -0,0 +1,139 @@
+import { expect, fixture, html } from '@open-wc/testing';
+
+import '../../../dist/shoelace.js';
+import type SlCard from './card';
+
+describe('<sl-card>', () => {
+  let el: SlCard;
+
+  describe('when provided no parameters', async () => {
+    before(async () => {
+      el = await fixture<SlCard>(
+        html` <sl-card>This is just a basic card. No image, no header, and no footer. Just your content.</sl-card> `
+      );
+    });
+
+    it('should render a component that passes accessibility test.', async () => {
+      await expect(el).to.be.accessible();
+    });
+
+    it('should render the child content provided.', async () => {
+      expect(el.innerText).to.eq('This is just a basic card. No image, no header, and no footer. Just your content.');
+    });
+
+    it('should contain the class card.', async () => {
+      const card = el.shadowRoot.querySelector('.card') as HTMLElement;
+      expect(card.classList.value.trim()).to.eq('card');
+    });
+  });
+
+  describe('when provided an element in the slot "header" to render a header', async () => {
+    before(async () => {
+      el = await fixture<SlCard>(
+        html`<sl-card>
+          <div slot="header">Header Title</div>
+          This card has a header. You can put all sorts of things in it!
+        </sl-card>`
+      );
+    });
+
+    it('should render a component that passes accessibility test.', async () => {
+      await expect(el).to.be.accessible();
+    });
+
+    it('should render the child content provided.', async () => {
+      expect(el.innerText).to.contain('This card has a header. You can put all sorts of things in it!');
+    });
+
+    it('render the header content provided.', async () => {
+      const header = <HTMLDivElement>el.querySelector('div[slot=header]');
+      expect(header.innerText).eq('Header Title');
+    });
+
+    it('accept "header" as an assigned child in the shadow root.', async () => {
+      const slot = <HTMLSlotElement>el.shadowRoot.querySelector('slot[name=header]');
+      const childNodes = slot.assignedNodes({ flatten: true });
+
+      expect(childNodes.length).to.eq(1);
+    });
+
+    it('should contain the class card--has-header.', async () => {
+      const card = el.shadowRoot.querySelector('.card') as HTMLElement;
+      expect(card.classList.value.trim()).to.eq('card card--has-header');
+    });
+  });
+
+  describe('when provided an element in the slot "footer" to render a footer', async () => {
+    before(async () => {
+      el = await fixture<SlCard>(
+        html`<sl-card>
+          This card has a footer. You can put all sorts of things in it!
+
+          <div slot="footer">Footer Content</div>
+        </sl-card>`
+      );
+    });
+
+    it('should render a component that passes accessibility test.', async () => {
+      await expect(el).to.be.accessible();
+    });
+
+    it('should render the child content provided.', async () => {
+      expect(el.innerText).to.contain('This card has a footer. You can put all sorts of things in it!');
+    });
+
+    it('render the footer content provided.', async () => {
+      const footer = <HTMLDivElement>el.querySelector('div[slot=footer]');
+      expect(footer.innerText).eq('Footer Content');
+    });
+
+    it('accept "footer" as an assigned child in the shadow root.', async () => {
+      const slot = <HTMLSlotElement>el.shadowRoot.querySelector('slot[name=footer]');
+      const childNodes = slot.assignedNodes({ flatten: true });
+
+      expect(childNodes.length).to.eq(1);
+    });
+
+    it('should contain the class card--has-footer.', async () => {
+      const card = el.shadowRoot.querySelector('.card') as HTMLElement;
+      expect(card.classList.value.trim()).to.eq('card card--has-footer');
+    });
+  });
+
+  describe('when provided an element in the slot "image" to render a image', async () => {
+    before(async () => {
+      el = await fixture<SlCard>(
+        html`<sl-card>
+          <img
+            slot="image"
+            src="https://images.unsplash.com/photo-1547191783-94d5f8f6d8b1?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=400&q=80"
+            alt="A kitten walks towards camera on top of pallet."
+          />
+          This is a kitten, but not just any kitten. This kitten likes walking along pallets.
+        </sl-card>`
+      );
+    });
+
+    it('should render a component that passes accessibility test.', async () => {
+      await expect(el).to.be.accessible();
+    });
+
+    it('should render the child content provided.', async () => {
+      expect(el.innerText).to.contain(
+        'This is a kitten, but not just any kitten. This kitten likes walking along pallets.'
+      );
+    });
+
+    it('accept "image" as an assigned child in the shadow root.', async () => {
+      const slot = <HTMLSlotElement>el.shadowRoot.querySelector('slot[name=image]');
+      const childNodes = slot.assignedNodes({ flatten: true });
+
+      expect(childNodes.length).to.eq(1);
+    });
+
+    it('should contain the class card--has-image.', async () => {
+      const card = el.shadowRoot.querySelector('.card') as HTMLElement;
+      expect(card.classList.value.trim()).to.eq('card card--has-image');
+    });
+  });
+});