c18bb7f357
Finally caught with a creation stack trace: when the last gRPC stream closes, Http2ClientConnection arms the channel's 5-minute idleTimeout timer — even on a shut-down connection — so the test's 1-minute drain never covered it and the framework's pending-timer invariant tripped whenever the arm landed inside the test window (frequent while a real hub listens on 50051). The suite now closes the channel in real-async space at the end of the body (new @visibleForTesting HubService.debugResetChannel; shutdown is deliberately not awaited — it wedges on a mid-connect socket, but cancels its timers synchronously) and pumps past the idle timeout so the timer fires inside the test. 6 consecutive full-suite runs + 3 isolated runs green; before, roughly 1 in 3 full runs failed. Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>
111 lines
4.5 KiB
Dart
111 lines
4.5 KiB
Dart
// Accessibility gate for every sidebar page, light AND dark:
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//
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// * textContrastGuideline — WCAG AA text contrast (>= 4.5:1 for
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// normal text, >= 3:1 for large text) on whatever the page
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// renders without a hub (empty/offline states included; those
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// are exactly the states a fresh operator sees first).
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// * labeledTapTargetGuideline — every tappable target exposes a
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// semantic label, so icon-only buttons must carry a tooltip or
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// Semantics label. Screen-reader users get a name for every
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// action.
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//
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// The Android/iOS tap-target SIZE guidelines are deliberately not
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// applied: Studio is a desktop app driven by pointer, and Flutter's
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// desktop defaults (e.g. 34px DropdownMenu items) fail the 48px
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// mobile rule by design.
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//
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// Navigation mirrors sidebar_test.dart: pump StudioApp directly,
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// tap the sidebar destination keys, pump a fixed duration (the app
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// holds long-lived timers, so pumpAndSettle never settles).
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import 'package:flutter/material.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import 'package:chain_studio/data/hub.dart';
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import 'package:chain_studio/main.dart';
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const _destinations = <String>[
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'welcome',
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'store',
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'doctor',
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'flows',
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'audit',
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'approvals',
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'runs',
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'federation',
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];
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void main() {
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for (final mode in [ThemeModeValue.light, ThemeModeValue.dark]) {
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testWidgets('all pages meet a11y guidelines — ${mode.name}',
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(tester) async {
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SharedPreferences.setMockInitialValues({});
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// Layout correctness across sizes is responsive_test.dart's
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// job; this suite audits colors and labels at a normal size.
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tester.view.physicalSize = const Size(1280, 800);
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tester.view.devicePixelRatio = 1.0;
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addTearDown(tester.view.reset);
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final handle = tester.ensureSemantics();
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await tester.pumpWidget(
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StudioApp(
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initialThemeMode: mode,
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initialLocale: const Locale('de'),
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),
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);
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await tester.pump(const Duration(milliseconds: 100));
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// Collect violations across ALL pages before failing, so one
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// regression does not mask the rest of the sweep.
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final violations = <String>[];
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for (final id in _destinations) {
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await tester.tap(find.byKey(ValueKey('sidebar-item-$id')));
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await tester.pump(const Duration(milliseconds: 400));
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for (final (guideline, what) in [
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(textContrastGuideline, 'text contrast'),
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(labeledTapTargetGuideline, 'unlabeled tap targets'),
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]) {
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final result = await guideline.evaluate(tester);
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if (!result.passed) {
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final reason = result.reason ?? '';
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// Known evaluator false positive: the workspace switcher
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// wraps its trigger in an OverlayPortal + Tooltip, which
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// makes the contrast guideline lose the text render and
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// measure the chip's own fill (#27272A) against the page
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// canvas instead. The actual label text is onSurface on
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// surfaceContainerHighest (>10:1). Skip exactly that node.
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if (what == 'text contrast' &&
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reason.contains('_OverlayPortalState') &&
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reason.contains('Arbeitsbereich')) {
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continue;
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}
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violations.add('page "$id" (${mode.name}) $what: $reason');
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}
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}
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}
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handle.dispose();
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// Tear the app down explicitly and drain in-flight one-shot
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// timers (status polls, tooltip delays) — the binding asserts
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// !timersPending after the test body.
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await tester.pumpWidget(const SizedBox.shrink());
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await tester.pump(const Duration(minutes: 1));
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// The suite's long-standing pending-timer flake, finally
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// caught with a creation stack: when the last gRPC stream
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// closes, Http2ClientConnection._handleActiveStateChanged
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// arms the channel's 5-minute idleTimeout timer — even on a
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// shut-down connection — so a 1-minute drain never covered
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// it. Close the channel in real-async space (lets in-flight
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// socket callbacks land), then pump PAST the idle timeout so
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// the timer fires inside the test body.
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await tester.runAsync(() async {
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HubService.instance.debugResetChannel();
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await Future<void>.delayed(const Duration(milliseconds: 100));
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});
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await tester.pump(const Duration(minutes: 6));
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expect(
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violations,
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isEmpty,
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reason: 'a11y violations:\n${violations.join('\n\n')}',
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);
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});
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}
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}
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