From b61c5f789342ecc4d330a20cdccc5524c01b9433 Mon Sep 17 00:00:00 2001
From: David Martos <davidmartos96@gmail.com>
Date: Wed, 20 Nov 2024 15:58:42 +0100
Subject: [PATCH 1/2] test for issue 390

---
 test/v3_test.dart | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/test/v3_test.dart b/test/v3_test.dart
index 73c4959..67368a3 100644
--- a/test/v3_test.dart
+++ b/test/v3_test.dart
@@ -470,6 +470,39 @@ void main() {
       expect(isClosed, isTrue);
     });
   });
+
+  withPostgresServer('issue 390', (server) {
+    test(
+        'issue 390 - Cannot ALTER TABLE because it is being used by active queries in this session',
+        () async {
+      final conn = await server.newConnection();
+      const tableToAlter = 'table_to_alter';
+      const otherTable = 'other_table';
+
+      await conn.execute('''
+        CREATE TABLE $tableToAlter (
+            a_id INTEGER PRIMARY KEY NOT NULL,
+            a_other_id INTEGER NOT NULL
+        );''');
+
+      await conn.execute(
+          'CREATE TABLE $otherTable (other_id INTEGER PRIMARY KEY NOT NULL);');
+
+      await conn.runTx((tx) async {
+        // Select from the table that will be altered
+        await tx.execute('SELECT * FROM $tableToAlter;');
+
+        // Add a foreign key constraint
+        await tx.execute('''
+          ALTER TABLE $tableToAlter
+          ADD CONSTRAINT fk_other 
+            FOREIGN KEY (a_other_id) 
+              REFERENCES $otherTable(other_id);''');
+      });
+
+      // Should not throw
+    });
+  });
 }
 
 final _isPostgresException = isA<PgException>();

From e285f10a7f3a2b903317e88c87aad9d81065f9d5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Istv=C3=A1n=20So=C3=B3s?= <isoos@users.noreply.github.com>
Date: Wed, 20 Nov 2024 17:53:31 +0100
Subject: [PATCH 2/2] Update test/v3_test.dart

---
 test/v3_test.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/v3_test.dart b/test/v3_test.dart
index 67368a3..6fa201e 100644
--- a/test/v3_test.dart
+++ b/test/v3_test.dart
@@ -501,7 +501,7 @@ void main() {
       });
 
       // Should not throw
-    });
+    }, skip: 'investigation needed');
   });
 }