Add insertion tests for WAL mode fixed in sqflite_android v2.4.2+3

packages_flutter/sqflite_example_android_wal/test/update_count_issue_wal_test_main.dart

@@ -26,6 +26,32 @@ void main() async {
     final count = await bookRepository.deleteBook(book!['id']);
     expect(count, 1, reason: 'Deleting existing row should return 1');
   });
+
+  test('Inserting a new record with int PK should return the PK as row id in '
+      'WAL mode', () async {
+    final int id = 5;
+    final book = {'id': id, 'description': 'Test insert $id'};
+    final result = await bookRepository.insertBook(book);
+    expect(
+      result,
+      id,
+      reason:
+          'Inserting a new record with int PK should return the PK as row id',
+    );
+  });
+
+  test('Inserting a new record with non-int PK should return internal non-zero '
+      'row id in WAL mode', () async {
+    final data = {'id': 'EUR', 'description': 'Test insert EUR'};
+    final result = await bookRepository.insertCurrency(data);
+    expect(
+      result,
+      greaterThan(0),
+      reason:
+          'Inserting a new record with non-int PK should return internal '
+          'non-zero row id',
+    );
+  });
 }
 
 class LocalDatabaseService {
@@ -61,6 +87,7 @@ class LocalDatabaseService {
 }
 
 const booksTableName = 'books';
+const _currenciesTableName = 'currency';
 
 void _createTables(Batch batch) {
   batch.execute('DROP TABLE IF EXISTS $booksTableName');
@@ -69,6 +96,12 @@ void _createTables(Batch batch) {
   "description" TEXT
 )''');
 
+  batch.execute('DROP TABLE IF EXISTS $_currenciesTableName');
+  batch.execute('''CREATE TABLE $_currenciesTableName (
+  "id" TEXT PRIMARY KEY,
+  "description" TEXT
+)''');
+
   _insertDummyData(batch);
 }
 
@@ -166,4 +199,18 @@ class BookRepository {
     print('Rows deleted: $count. But record is actually deleted: $savedData');
     return count;
   }
+
+  Future<int> insertBook(Map<String, dynamic> book) async {
+    final db = (await LocalDatabaseService.instance()).database!;
+    final result = await db.insert(booksTableName, book);
+    print('Row inserted, row id: $result');
+    return result;
+  }
+
+  Future<int> insertCurrency(Map<String, dynamic> data) async {
+    final db = (await LocalDatabaseService.instance()).database!;
+    final result = await db.insert(_currenciesTableName, data);
+    print('Row inserted, row id: $result');
+    return result;
+  }
 }