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halkyon_shared/packages/halkyon_app/test/instance/instance_checker_test.dart
Tizian 「ティツィアーン」 e23cc77f7c
halkyon_app: instances, sign-in and sync plumbing for Halkyon's apps
What every Halkyon app's shell needs, taken from Halkyon Learn's and set
on halkyon_base's client: the instances a device keeps an account on,
the first start's tiles and where an instance keeps people's data, the
account switcher; signing in anonymously, with GitHub or an email code,
switching person and the start screen; the gates that build an app's
dependencies per instance and per person; and the sync service with its
status, Settings card and banner. Texts of its own in English and
German take the app's name; what only the app can say, it passes in.
Fakes for apps' tests are in testing.dart.

An instance's basics now name the app it serves (`app`, set by the
host's configuration), and an app accepts only an instance of its own.
SerialQueue and CoalescingRunner move into halkyon_core.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
2026-10-19 15:31:40 +02:00

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2.2 KiB
Dart

import 'dart:convert';
import 'package:flutter_test/flutter_test.dart';
import 'package:halkyon_app/halkyon_app.dart';
import 'package:halkyon_base_client/halkyon_base_client.dart';
import 'package:http/http.dart' as http;
import 'package:http/testing.dart';
void main() {
final halkyon = Instance.parse('learn.example.org')!;
final todo = Instance.parse('todo.example.org')!;
final elsewhere = Instance.parse('www.example.org')!;
/// Basics as an instance of [app] tells them.
http.Response basicsOf(String app) => http.Response(
jsonEncode(
InstanceBasics(
app: app,
emailSignIn: false,
sourceCodeUrl: 'https://code.example.org/$app',
minimumAppBuild: 1,
dataLocation: 'EU',
backupLocation: 'CH',
).toJson(),
),
200,
);
/// A checker of the app `learn` reaching instances through a fake network,
/// where learn.example.org answers as an instance of it, todo.example.org
/// as an instance of another app, and nothing else answers.
ServerpodInstanceChecker checker() => ServerpodInstanceChecker(
app: 'learn',
httpClient: () => MockClient(
(request) async => switch ((request.url.host, request.url.path)) {
('learn.example.org', '/halkyon_base.instance/basics') => basicsOf(
'learn',
),
('todo.example.org', '/halkyon_base.instance/basics') => basicsOf(
'todo',
),
_ => http.Response('<html>Not found</html>', 404),
},
),
);
test('an instance answers when its halkyon_base tells its basics; any '
'other site does not', () async {
expect(await checker().answers(halkyon), isTrue);
expect(await checker().answers(elsewhere), isFalse);
});
test("another app's instance does not answer, so its address is refused "
'before the app moves there', () async {
expect(await checker().answers(todo), isFalse);
expect(await checker().locationsOf(todo), isNull);
});
test("says where an instance keeps people's data and its backups, and "
'nothing for a site that is no instance', () async {
expect(
await checker().locationsOf(halkyon),
const InstanceLocations(data: 'EU', backups: 'CH'),
);
expect(await checker().locationsOf(elsewhere), isNull);
});
}