94 lines
3.8 KiB
Dart
94 lines
3.8 KiB
Dart
import 'dart:convert';
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import 'package:cookit/src/bundle/bundle_codec.dart';
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import 'package:cookit/src/recipes/models/recipe.dart';
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import 'package:cookit/src/sharing/recipe_code.dart';
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import 'package:flutter_test/flutter_test.dart';
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import '../support/fixtures.dart';
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void main() {
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final now = DateTime(2026, 10, 23);
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Matcher fails(RecipeCodeError error) => throwsA(isA<RecipeCodeException>().having((e) => e.error, 'error', error));
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group('Base45 (RFC 9285 examples)', () {
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const examples = {'AB': 'BB8', 'Hello!!': '%69 VD92EX0', 'base-45': 'UJCLQE7W581', 'ietf!': 'QED8WEX0'};
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examples.forEach((plain, encoded) {
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test(plain, () {
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expect(base45Encode(utf8.encode(plain)), encoded);
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expect(utf8.decode(base45Decode(encoded)), plain);
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});
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});
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test('rejects text that is not Base45', () {
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expect(() => base45Decode('GGW'), throwsFormatException); // 65536
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expect(() => base45Decode('ab'), throwsFormatException);
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});
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});
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test('a Recipe survives the round trip, without what is personal', () {
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final text = RecipeCode.encode(
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recipe(favourite: true, reviewReasons: ['Portionen fehlen.'], photos: ['a.jpg']),
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courseName: 'Brot',
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units: const [BundleUnit(key: 'own-1', label: 'Würfel', direct: true)],
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);
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expect(text, startsWith('COOKIT1:'));
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expect(RegExp(r'^[0-9A-Z $%*+\-./:]+$').hasMatch(text), isTrue, reason: 'QR alphanumeric mode only');
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final shared = RecipeCode.decode(text, now: now);
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final r = shared.recipe;
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expect(shared.courseName, 'Brot');
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expect(shared.units.single.label, 'Würfel');
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expect(r.name, 'Focaccia');
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expect(r.servings, 4);
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expect(r.prepMinutes, 30);
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expect(r.calories?.kcal, 775);
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expect(r.ingredientGroups[0].lines[1].amountMax, 3);
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expect(r.ingredientGroups[0].lines[1].remark, 'gutes');
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expect(r.ingredientGroups[1].name, 'Topping');
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expect(r.stepSections.single.steps, ['Kneten.', 'Gehen lassen.']);
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expect(r.sources, ['https://example.org/focaccia']);
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expect(r.notes, '22x22 cm Form');
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expect(r.favourite, isFalse);
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expect(r.reviewReasons, isEmpty);
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expect(r.photos, isEmpty);
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expect(r.createdAt, now);
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});
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test('notes stay home when asked to', () {
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final text = RecipeCode.encode(recipe(), includeNotes: false);
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expect(RecipeCode.decode(text, now: now).recipe.notes, isNull);
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});
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test('other codes, newer versions and damaged codes are told apart', () {
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final good = RecipeCode.encode(recipe());
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expect(() => RecipeCode.decode('https://example.org', now: now), fails(RecipeCodeError.notARecipeCode));
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expect(() => RecipeCode.decode('COOKITX:123', now: now), fails(RecipeCodeError.notARecipeCode));
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expect(
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() => RecipeCode.decode(good.replaceFirst('COOKIT1', 'COOKIT2'), now: now),
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fails(RecipeCodeError.newerVersion),
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);
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expect(() => RecipeCode.decode(good.substring(0, good.length - 7), now: now), fails(RecipeCodeError.damaged));
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});
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test('the QR code is as small as the text allows, and too much is refused', () {
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final small = RecipeCode.qrCode(RecipeCode.encode(recipe()));
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expect(small.typeNumber, lessThan(20));
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// A long Recipe still fits one code…
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final steps = [for (var i = 0; i < 40; i++) 'Schritt $i: ${'Rühren und abschmecken, dann weiter. ' * 2}'];
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final long = recipe(stepSections: [StepSection(steps: steps)]);
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expect(RecipeCode.qrCode(RecipeCode.encode(long)).typeNumber, greaterThan(small.typeNumber));
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// …but text no compression can shrink does not.
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final noise = [for (var i = 0; i < 3000; i++) String.fromCharCode(0x4E00 + (i * 7919) % 20000)].join();
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final huge = recipe(
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stepSections: [
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StepSection(steps: [noise]),
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],
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);
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expect(() => RecipeCode.qrCode(RecipeCode.encode(huge)), fails(RecipeCodeError.tooLong));
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});
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}
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