feat: build v1 Mews client: reader UI, gestures, Drift store, fetch actor

app/test/reader_widget_test.dart

@@ -0,0 +1,88 @@
+import 'dart:io' show File;
+
+import 'package:drift/native.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:mews/database/database.dart';
+import 'package:mews/l10n/strings.dart';
+import 'package:mews/mews/document.dart';
+import 'package:mews/presentation/app.dart';
+import 'package:mews/presentation/reader/fob.dart';
+import 'package:mews/presentation/reader/mews_page_view.dart';
+import 'package:mews/presentation/reader/palettes.dart';
+
+Future<MewsApp> _app() async {
+  final strings = Strings();
+  await strings.load();
+  final deps = AppDependencies(database: MewsDatabase.test(NativeDatabase.memory()));
+  return MewsApp(deps: deps, strings: strings);
+}
+
+void main() {
+  testWidgets('starts with the address bar and no FOB', (tester) async {
+    await tester.pumpWidget(await _app());
+    await tester.pumpAndSettle();
+
+    expect(find.byType(TextField), findsOneWidget);
+    expect(find.text('Enter a web address'), findsOneWidget);
+    // The FOB only appears once the reader scrolls a page; without a page it
+    // stays invisible and untouchable.
+    final fob = tester.widget<Fob>(find.byType(Fob));
+    expect(fob.visible, isFalse);
+  });
+
+  testWidgets('renders a page and follows links', (tester) async {
+    final page = MewsPage(
+      url: 'https://example.com/index.html',
+      title: 'Test page',
+      lang: 'en',
+      direction: TextDirection.ltr,
+      variant: MewsVariant.plain,
+      specVersion: '0.1',
+      entries: const [],
+      body: const [
+        HeadingBlock(1, [MewsText('A heading')]),
+        ParagraphBlock([MewsText('Read on for more.')]),
+        ParagraphBlock([
+          MewsLink('https://example.com/next.html', [MewsText('the next page')]),
+        ]),
+      ],
+    );
+
+    String? opened;
+    await tester.pumpWidget(
+      MaterialApp(
+        home: StringsScope(
+          strings: (await _strings()),
+          child: MewsPageView(
+            page: page,
+            palette: paletteFor(
+                pageVariant: MewsVariant.plain, readerVariant: 'site', dark: false),
+            fontFamily: 'Atkinson Hyperlegible',
+            fontScale: 1.0,
+            visitedUrls: const {},
+            onLinkTap: (url) => opened = url,
+            onFormSubmit: (_, _) {},
+          ),
+        ),
+      ),
+    );
+
+    expect(find.text('A heading'), findsOneWidget);
+    expect(find.textContaining('the next page'), findsOneWidget);
+
+    // The paragraph Text stretches the full column width, so tap on the
+    // glyphs of the link itself, not the widget's center.
+    final rect = tester.getRect(find.textContaining('the next page'));
+    await tester.tapAt(rect.topLeft + const Offset(30, 13));
+    await tester.pump();
+    expect(opened, 'https://example.com/next.html');
+  });
+}
+
+Future<Strings> _strings() async {
+  final strings = Strings();
+  strings.loadSource(File('locales/en-US/main.ftl').readAsStringSync());
+  return strings;
+}