Testing is complete!! And a nice build runner script to boot

backend/test/routes/health_test.dart

@@ -0,0 +1,24 @@
+import 'dart:io';
+
+import 'package:dart_frog/dart_frog.dart';
+import 'package:mocktail/mocktail.dart';
+import 'package:test/test.dart';
+
+import '../../routes/health.dart' as route;
+
+class _MockRequestContext extends Mock implements RequestContext {}
+
+void main() {
+  group('GET /health', () {
+    test('responds with a 200 and an empty body.', () async {
+      final context = _MockRequestContext();
+      final response = route.onRequest(context);
+      final body = await response.body();
+      expect(response.statusCode, equals(HttpStatus.ok));
+      expect(
+        body,
+        '',
+      );
+    });
+  });
+}