Team oppgave og litt unit-testing

react_test/tutorial/app/page.js

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+
+import { useState } from 'react';
+
+function Header({ title }) {
+  return <h1>{title ? title : 'Default Title'}</h1>;
+}
+export default function HomePage() {
+  const names = ['Ada Lovlace', 'Grace Hopper', 'Margaret Hamilton'];
+
+  const [likes, setLikes] = React.useState(0);
+
+  function handleClick() {
+    setLikes(likes + 1);
+  }
+  return (
+    <div>
+      <Header title="Develop. Preview. Ship." />
+      <ul>
+        {names.map((name) => (
+          <li key={name}>{name}</li>
+        ))}
+      </ul>
+      <button onClick={handleClick}>Likes ({likes})</button>
+    </div>
+  );
+}
+