Add an integration test for replacing a foreign key constraint

Author: morozov

tests/Functional/Schema/AlterTableTest.php

@@ -176,6 +176,43 @@ public function testAddNewColumnToPrimaryKey(): void
         });
     }
 
+    public function testReplaceForeignKeyConstraint(): void
+    {
+        $customers = new Table('customers');
+        $customers->addColumn('id', Types::INTEGER);
+        $customers->addColumn('tenant_id', Types::INTEGER);
+        $customers->setPrimaryKey(['id', 'tenant_id']);
+
+        $orders = new Table('orders');
+        $orders->addColumn('id', Types::INTEGER);
+        $orders->addColumn('customer_id', Types::INTEGER);
+        $orders->addColumn('tenant_id', Types::INTEGER);
+        $orders->addForeignKeyConstraint(
+            'customers',
+            ['customer_id'],
+            ['id'],
+            [],
+            'customers_fk',
+        );
+
+        $this->dropTableIfExists('orders');
+        $this->dropTableIfExists('customers');
+
+        $this->connection->createSchemaManager()
+            ->createTable($customers);
+
+        $this->testMigration($orders, static function (Table $table): void {
+            $table->removeForeignKey('customers_fk');
+            $table->addForeignKeyConstraint(
+                'customers',
+                ['customer_id', 'tenant_id'],
+                ['id', 'tenant_id'],
+                [],
+                'customers_fk',
+            );
+        });
+    }
+
     private function ensureDroppingPrimaryKeyConstraintIsSupported(): void
     {
         $platform = $this->connection->getDatabasePlatform();