Fix postgres tests

.github/workflows/main.yml

@@ -188,7 +188,7 @@ jobs:
         working-directory: extras/drift_postgres
         run: |
           dart pub upgrade
-          dart test
+          dart test -j 1
       - name: MariaDB integration tests
         working-directory: extras/drift_mariadb
         continue-on-error: true

docs/lib/snippets/platforms/postgres.dart

@@ -26,6 +26,11 @@ void main() async {
       username: 'postgres',
       password: 'postgres',
     ),
+    sessionSettings: SessionSettings(
+      // If you expect to talk to a Postgres database over a public connection,
+      // please use SslMode.verifyFull instead.
+      sslMode: SslMode.disable,
+    ),
   );
 
   final driftDatabase = MyDatabase(pgDatabase);

extras/drift_postgres/README.md

@@ -38,4 +38,4 @@ To test this package, first run
 docker run -p 5432:5432 -e POSTGRES_USER=postgres -e POSTGRES_PASSWORD=postgres postgres
 ```
 
-It can then be tested with `dart test`.
+It can then be tested with `dart test -j 1` (concurrency needs to be disabled since tests are using the same database).

extras/drift_postgres/example/main.dart

@@ -26,6 +26,11 @@ void main() async {
       username: 'postgres',
       password: 'postgres',
     ),
+    sessionSettings: pg.SessionSettings(
+      // If you expect to talk to a Postgres database over a public connection,
+      // please use SslMode.verifyFull instead.
+      sslMode: pg.SslMode.disable,
+    ),
     logStatements: true,
   ));
 

extras/drift_postgres/test/drift_postgres_test.dart

@@ -18,11 +18,12 @@ class PgExecutor extends TestExecutor {
         username: 'postgres',
         password: 'postgres',
       ),
+      sessionSettings: pg.SessionSettings(sslMode: pg.SslMode.disable),
     ));
   }
 
   @override
-  Future clearDatabaseAndClose(Database db) async {
+  Future clearDatabaseAndClose(GeneratedDatabase db) async {
     await db.customStatement('DROP SCHEMA public CASCADE;');
     await db.customStatement('CREATE SCHEMA public;');
     await db.customStatement('GRANT ALL ON SCHEMA public TO postgres;');

extras/drift_postgres/test/types_test.dart

@@ -5,24 +5,18 @@ import 'package:test/test.dart';
 import 'package:uuid/uuid.dart';
 
 import '../example/main.dart';
+import 'drift_postgres_test.dart';
 
 void main() {
-  final database = DriftPostgresDatabase(PgDatabase(
-    endpoint: pg.Endpoint(
-      host: 'localhost',
-      database: 'postgres',
-      username: 'postgres',
-      password: 'postgres',
-    ),
-  ));
+  final executor = PgExecutor();
+  final database = DriftPostgresDatabase(executor.createConnection());
 
   setUpAll(() async {
     await database.users.insertOne(UsersCompanion.insert(name: 'test user'));
   });
 
   tearDownAll(() async {
-    await database.users.deleteAll();
-    await database.close();
+    await executor.clearDatabaseAndClose(database);
   });
 
   group('custom types pass through', () {