Add basic test for encryption

Author: simolus3

.github/workflows/main.yml

@@ -187,7 +187,8 @@ jobs:
 
     - name: Web tests
       run: |
-        curl https://storage.googleapis.com/simon-public-euw3/assets/sqlite3/wasm/2.4.6/sqlite3.wasm -o example/web/sqlite3.wasm
+        curl https://simon-public.fsn1.your-objectstorage.com/assets/sqlite3/2.6.0/sqlite3.wasm -o example/web/sqlite3.wasm
+        curl https://simon-public.fsn1.your-objectstorage.com/assets/sqlite3/2.6.0/sqlite3mc.wasm -o example/web/sqlite3.wasm
         dart test -P web -r expanded
       # If browsers behave differently on different platforms, surely that's not our fault...
       # So, only run browser tests on Linux to be faster.

sqlite3/test/wasm/encryption_test.dart

@@ -0,0 +1,30 @@
+@Tags(['wasm'])
+library;
+
+import 'package:sqlite3/wasm.dart';
+import 'package:test/test.dart';
+
+import 'utils.dart';
+
+void main() {
+  test('can open databases with sqlite3mc', () async {
+    final sqlite3 = await loadSqlite3WithoutVfs(encryption: true);
+    sqlite3.registerVirtualFileSystem(InMemoryFileSystem(), makeDefault: true);
+
+    sqlite3.open('/test')
+      ..execute('pragma key = "key"')
+      ..execute('CREATE TABLE foo (bar TEXT) STRICT;')
+      ..execute('INSERT INTO foo VALUES (?)', ['test'])
+      ..dispose();
+
+    final database = sqlite3.open('/test');
+    expect(
+      () => database.select('SELECT * FROM foo'),
+      throwsA(isA<SqliteException>()
+          .having((e) => e.message, 'message', contains('not a database'))),
+    );
+
+    database.execute('pragma key = "key"');
+    expect(database.select('SELECT * FROM foo'), isNotEmpty);
+  });
+}

sqlite3/test/wasm/sqlite3_test.dart

@@ -3,7 +3,6 @@ library;
 
 import 'dart:js_interop';
 import 'dart:js_interop_unsafe';
-import 'dart:math';
 
 import 'package:http/http.dart' as http;
 import 'package:sqlite3/wasm.dart';
@@ -35,9 +34,7 @@ void main() {
 
           sqlite3 = await WasmSqlite3.load(response.bodyBytes);
           sqlite3.registerVirtualFileSystem(
-            // Not using the default Random.secure() because it's not supported
-            // by dart2wasm
-            InMemoryFileSystem(random: Random()),
+            InMemoryFileSystem(),
             makeDefault: true,
           );
         }

sqlite3/test/wasm/utils.dart

@@ -1,12 +1,12 @@
 import 'package:sqlite3/wasm.dart';
 import 'package:test/scaffolding.dart';
 
-Future<WasmSqlite3> loadSqlite3WithoutVfs() async {
+Future<WasmSqlite3> loadSqlite3WithoutVfs({bool encryption = false}) async {
   final channel = spawnHybridUri('/test/wasm/asset_server.dart');
   final port = (await channel.stream.first as double).toInt();
 
-  final sqliteWasm =
-      Uri.parse('http://localhost:$port/example/web/sqlite3.wasm');
+  final filename = encryption ? 'sqlite3mc.wasm' : 'sqlite3.wasm';
+  final sqliteWasm = Uri.parse('http://localhost:$port/example/web/$filename');
 
   return await WasmSqlite3.loadFromUrl(sqliteWasm);
 }