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test/test_helpers.dart

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+import 'dart:io';
+import 'dart:math';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:path/path.dart' as p;
+import 'package:receipity/services/product_repository.dart';
+import 'package:sqflite_common_ffi/sqflite_ffi.dart';
+
+var _dbSeq = 0;
+var _sqliteReady = false;
+
+void ensureTestSqlite() {
+  if (_sqliteReady) return;
+  sqfliteFfiInit();
+  databaseFactory = databaseFactoryFfi;
+  _sqliteReady = true;
+}
+
+ProductRepository memoryRepository() {
+  ensureTestSqlite();
+  final dir = Directory(p.join('.dart_tool', 'receipity_test_db'))
+    ..createSync(recursive: true);
+  final name =
+      'db_${DateTime.now().microsecondsSinceEpoch}_${_dbSeq++}_${Random().nextInt(1 << 32)}.sqlite';
+  return ProductRepository(databasePath: p.join(dir.path, name));
+}
+
+Future<void> pumpUntilFound(
+  WidgetTester tester,
+  Finder finder, {
+  int attempts = 40,
+}) async {
+  for (var i = 0; i < attempts; i++) {
+    await tester.pump();
+    if (finder.evaluate().isNotEmpty) return;
+    await tester.runAsync(
+      () => Future<void>.delayed(const Duration(milliseconds: 20)),
+    );
+  }
+  throw TestFailure('Timed out waiting for $finder');
+}