test(heading): add tests for heading component

packages/kiwi-core/src/Heading/tests/Heading.test.js

@@ -0,0 +1,17 @@
+import Heading from '../'
+import { render } from '@/packages/kiwi-core/src/test-utils'
+
+const renderComponent = (props) => {
+  const base = {
+    components: { Heading },
+    template: `<Heading>Header</Heading>`,
+    ...props
+  }
+  return render(base)
+}
+
+it('should render correctly', () => {
+  const { asFragment } = renderComponent()
+
+  expect(asFragment()).toMatchSnapshot()
+})

packages/kiwi-core/src/Heading/tests/__snapshots__/Heading.test.js.snap

@@ -0,0 +1,11 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`should render correctly 1`] = `
+<DocumentFragment>
+  <h1
+    class="css-tyxjib"
+  >
+    Header
+  </h1>
+</DocumentFragment>
+`;