unicorn-utterances/build-scripts/social-previews/layouts/twitter-preview.test.tsx

import * as React from "preact";
import { render } from "@testing-library/preact";
import { MockPost } from "__mocks__/data/mock-post";
import TwitterLargeCard, { splitSentence } from "./twitter-preview";

test("Social previews splitSentence", () => {
	// doesn't split at start/end of short titles
	expect(splitSentence("Topic: Topic")).toStrictEqual(["Topic: Topic", ""]);

	// splits by colon (including the colon char)
	expect(splitSentence("A Topic: an Attribute")).toStrictEqual([
		"A Topic",
		": an Attribute",
	]);

	// splits by commas
	expect(
		splitSentence("An Attribute of Topic, Topic, and Topic"),
	).toStrictEqual(["An Attribute of ", "Topic, Topic, and Topic"]);

	// splits by apostrophe
	expect(splitSentence("A Topic's Attribute")).toStrictEqual([
		"A Topic's",
		" Attribute",
	]);

	// splits by apostrophe (plural)
	expect(splitSentence("Some Topics' Attributes")).toStrictEqual([
		"Some Topics'",
		" Attributes",
	]);

	// splits by lowercase words
	expect(splitSentence("An Attribute in a Topic")).toStrictEqual([
		"An Attribute in ",
		"a Topic",
	]);
});

test("Social preview renders", async () => {
	const post = MockPost;
	const { baseElement, findByText } = render(
		<TwitterLargeCard.Component
			post={post}
			postHtml="<code>test();</code>"
			width={1280}
			height={640}
			authorImageMap={{ [post.authors[0]]: "test.jpg" }}
		/>,
	);

	expect(baseElement).toBeInTheDocument();
	expect(await findByText(post.title)).toBeInTheDocument();
});