only in patch2:
unchanged:
--- a/core/modules/system/src/Tests/Entity/FieldSqlStorageTest.php
+++ b/core/modules/system/src/Tests/Entity/FieldSqlStorageTest.php
@@ -476,7 +476,7 @@ public function testTableNames() {
     // Note: we need to test entity types with long names. We therefore use
     // fields on imaginary entity types (works as long as we don't actually save
     // them), and just check the generated table names.
-
+    //
     // Short entity type and field name.
     $entity_type = 'short_entity_type';
     $field_name = 'short_field_name';
@@ -490,7 +490,7 @@ public function testTableNames() {
     $expected = 'short_entity_type_revision__short_field_name';
     $this->assertEqual($this->tableMapping->getDedicatedRevisionTableName($field_storage), $expected);
 
-    // Short entity type, long field name
+    // Short entity type, long field name.
     $entity_type = 'short_entity_type';
     $field_name = 'long_field_name_abcdefghijklmnopqrstuvwxyz';
     $field_storage = entity_create('field_storage_config', array(
@@ -503,7 +503,7 @@ public function testTableNames() {
     $expected = 'short_entity_type_r__' . substr(hash('sha256', $field_storage->uuid()), 0, 10);
     $this->assertEqual($this->tableMapping->getDedicatedRevisionTableName($field_storage), $expected);
 
-    // Long entity type, short field name
+    // Long entity type, short field name.
     $entity_type = 'long_entity_type_abcdefghijklmnopqrstuvwxyz';
     $field_name = 'short_field_name';
     $field_storage = entity_create('field_storage_config', array(
@@ -548,6 +548,10 @@ public function testTableNames() {
     $this->assertEqual($this->tableMapping->getDedicatedDataTableName($field_storage, TRUE), $expected);
     $expected = 'field_deleted_revision_' . substr(hash('sha256', $field_storage->uuid()), 0, 10);
     $this->assertEqual($this->tableMapping->getDedicatedRevisionTableName($field_storage, TRUE), $expected);
+
+    // Since the cardinality of the field is greater than 1, the table name
+    // retrieved from getFieldTableName() should be the dedicated table.
+    $this->assertEqual($this->tableMapping->getFieldTableName($this->fieldName), $this->tableMapping->getDedicatedDataTableName($this->fieldStorage));
   }
 
 }