Support SQLServer

tests/Functional/DeferrableConstraintsTest.php

@@ -9,6 +9,7 @@
 use Doctrine\DBAL\Platforms\OraclePlatform;
 use Doctrine\DBAL\Platforms\PostgreSQLPlatform;
 use Doctrine\DBAL\Platforms\SqlitePlatform;
+use Doctrine\DBAL\Platforms\SQLServerPlatform;
 use Doctrine\DBAL\Schema\Table;
 use Doctrine\DBAL\Schema\UniqueConstraint;
 use Doctrine\DBAL\Tests\FunctionalTestCase;
@@ -187,7 +188,7 @@ public function testCommitWithNonDeferredConstraintAndTransactionNesting(): void
         } catch (Throwable $t) {
             $this->connection->rollBack();
 
-            $this->expectException(UniqueConstraintViolationException::class);
+            $this->expectUniqueConstraintViolation();
 
             throw $t;
         }
@@ -209,6 +210,17 @@ private function skipIfDeferrableIsNotSupported(): void
         self::markTestSkipped('Only databases supporting deferrable constraints are eligible for this test.');
     }
 
+    private function expectUniqueConstraintViolation(): void
+    {
+        if ($this->connection->getDatabasePlatform() instanceof SQLServerPlatform) {
+            $this->expectExceptionMessage(sprintf("Violation of UNIQUE KEY constraint '%s'", $this->constraintName));
+
+            return;
+        }
+
+        $this->expectException(UniqueConstraintViolationException::class);
+    }
+
     protected function tearDown(): void
     {
         $schemaManager = $this->connection->createSchemaManager();