overhaul tests

test/apps/errors/src/routes/blog/[slug].html

@@ -0,0 +1,19 @@
+<h1>{post.title}</h1>
+
+<script>
+	export default {
+		preload({ params }) {
+			const { slug } = params;
+
+			return this.fetch(`blog/${slug}.json`).then(r => {
+				return r.json().then(data => {
+					if (r.status !== 200) {
+						this.error(r.status, data);
+					}
+
+					return data;
+				});
+			});
+		}
+	};
+</script>

test/apps/errors/src/routes/blog/[slug].json.js

@@ -0,0 +1,9 @@
+export function get(req, res) {
+	res.writeHead(404, {
+		'Content-Type': 'application/json'
+	});
+
+	res.end(JSON.stringify({
+		message: 'not found'
+	}));
+}