diff --git a/tests/Functional/Schema/SchemaManagerTest.php b/tests/Functional/Schema/SchemaManagerTest.php
index 273084e4117..7f5405a3a1e 100644
--- a/tests/Functional/Schema/SchemaManagerTest.php
+++ b/tests/Functional/Schema/SchemaManagerTest.php
@@ -7,7 +7,6 @@
 use Doctrine\DBAL\Exception;
 use Doctrine\DBAL\Schema\AbstractSchemaManager;
 use Doctrine\DBAL\Schema\Comparator;
-use Doctrine\DBAL\Schema\Schema;
 use Doctrine\DBAL\Schema\Table;
 use Doctrine\DBAL\Tests\FunctionalTestCase;
 use Doctrine\DBAL\Types\Types;
@@ -37,22 +36,19 @@ public function testEmptyDiffRegardlessOfForeignTableQuotes(
             self::markTestSkipped('Platform does not support schemas.');
         }
 
-        $this->dropTableIfExists('other_schema.other_table');
-        $this->dropTableIfExists('other_schema."user"');
-        $this->dropSchemaIfExists('other_schema');
+        $this->dropAndCreateSchema('other_schema');
 
         $tableForeign = new Table($foreignTableName);
         $tableForeign->addColumn('id', 'integer');
         $tableForeign->setPrimaryKey(['id']);
+        $this->dropAndCreateTable($tableForeign);
 
         $tableTo = new Table('other_schema.other_table');
         $tableTo->addColumn('id', 'integer');
         $tableTo->addColumn('user_id', 'integer');
         $tableTo->setPrimaryKey(['id']);
-        $tableTo->addForeignKeyConstraint($tableForeign, ['user_id'], ['id'], []);
-
-        $schemaTo = new Schema([$tableForeign, $tableTo]);
-        $this->schemaManager->createSchemaObjects($schemaTo);
+        $tableTo->addForeignKeyConstraint($tableForeign, ['user_id'], ['id']);
+        $this->dropAndCreateTable($tableTo);
 
         $schemaFrom = $this->schemaManager->introspectSchema();
         $tableFrom  = $schemaFrom->getTable('other_schema.other_table');
@@ -88,12 +84,8 @@ public function testDropIndexInAnotherSchema(callable $comparatorFactory, string
             self::markTestSkipped('Platform does not support schemas.');
         }
 
-        $this->dropTableIfExists('test_drop_index_schema.some_table');
-        $this->dropSchemaIfExists('test_drop_index_schema');
-        $this->connection->executeStatement('CREATE SCHEMA test_drop_index_schema');
-        $this->dropTableIfExists('"case".some_table');
-        $this->dropSchemaIfExists('"case"');
-        $this->connection->executeStatement('CREATE SCHEMA "case"');
+        $this->dropAndCreateSchema('other_schema');
+        $this->dropAndCreateSchema('case');
 
         $tableFrom = new Table($tableName);
         $tableFrom->addColumn('id', Types::INTEGER);
@@ -119,8 +111,8 @@ public static function dataDropIndexInAnotherSchema(): iterable
             foreach (
                 [
                     'default schema' => ['some_table'],
-                    'unquoted schema' => ['test_drop_index_schema.some_table'],
-                    'quoted schema' => ['"test_drop_index_schema".some_table'],
+                    'unquoted schema' => ['other_schema.some_table'],
+                    'quoted schema' => ['"other_schema".some_table'],
                     'reserved schema' => ['case.some_table'],
                 ] as $testScenario => $testArguments
             ) {
diff --git a/tests/FunctionalTestCase.php b/tests/FunctionalTestCase.php
index 827f3f30f05..283a3f16a49 100644
--- a/tests/FunctionalTestCase.php
+++ b/tests/FunctionalTestCase.php
@@ -5,9 +5,13 @@
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\Exception;
 use Doctrine\DBAL\Exception\DatabaseObjectNotFoundException;
+use Doctrine\DBAL\Schema\Identifier;
+use Doctrine\DBAL\Schema\Schema;
 use Doctrine\DBAL\Schema\Table;
 use PHPUnit\Framework\TestCase;
 
+use function count;
+
 abstract class FunctionalTestCase extends TestCase
 {
     /**
@@ -104,13 +108,63 @@ public function dropAndCreateTable(Table $table): void
      *
      * @throws Exception
      */
-    public function dropSchemaIfExists(string $name): void
+    public function dropSchemaIfExists(string $schemaName): void
     {
-        $schemaManager = $this->connection->createSchemaManager();
+        $platform = $this->connection->getDatabasePlatform();
+        if (! $platform->supportsSchemas()) {
+            throw Exception::notSupported(__METHOD__);
+        }
+
+        $schemaName     = (new Identifier($schemaName))->getName();
+        $schemaManager  = $this->connection->createSchemaManager();
+        $databaseSchema = $schemaManager->introspectSchema();
+
+        $sequencesToDrop = [];
+        foreach ($databaseSchema->getSequences() as $sequence) {
+            if ($sequence->getNamespaceName() !== $schemaName) {
+                continue;
+            }
+
+            $sequencesToDrop[] = $sequence;
+        }
+
+        $tablesToDrop = [];
+        foreach ($databaseSchema->getTables() as $table) {
+            if ($table->getNamespaceName() !== $schemaName) {
+                continue;
+            }
+
+            $tablesToDrop[] = $table;
+        }
+
+        if (count($sequencesToDrop) > 0 || count($tablesToDrop) > 0) {
+            $schemaManager->dropSchemaObjects(new Schema($tablesToDrop, $sequencesToDrop));
+        }
 
         try {
-            $schemaManager->dropSchema($name);
+            $quotedSchemaName = (new Identifier($schemaName))->getQuotedName($platform);
+            $schemaManager->dropSchema($quotedSchemaName);
         } catch (DatabaseObjectNotFoundException $e) {
         }
     }
+
+    /**
+     * Drops and creates a new schema.
+     *
+     * @throws Exception
+     */
+    public function dropAndCreateSchema(string $schemaName): void
+    {
+        $platform = $this->connection->getDatabasePlatform();
+        if (! $platform->supportsSchemas()) {
+            throw Exception::notSupported(__METHOD__);
+        }
+
+        $schemaManager    = $this->connection->createSchemaManager();
+        $quotedSchemaName = (new Identifier($schemaName))->getQuotedName($platform);
+        $schemaToCreate   = new Schema([], [], null, [$quotedSchemaName]);
+
+        $this->dropSchemaIfExists($quotedSchemaName);
+        $schemaManager->createSchemaObjects($schemaToCreate);
+    }
 }