Avoid using FLOOR function in tests due to lack of support on old SQLite

Author: JanJakes

tests/WP_SQLite_Driver_Metadata_Tests.php

@@ -71,7 +71,7 @@ public function testInformationSchemaTables() {
 			"SELECT
 				table_name as 'name',
 				engine AS 'engine',
-				FLOOR( data_length / 1024 / 1024 ) 'data'
+				CAST( data_length / 1024 / 1024 AS UNSIGNED ) AS 'data'
 			FROM INFORMATION_SCHEMA.TABLES
 			WHERE TABLE_NAME = 't'
 			ORDER BY name ASC"

tests/WP_SQLite_Metadata_Tests.php

@@ -89,7 +89,7 @@ public function testInformationSchemaTables() {
 			"SELECT
 				table_name as 'name',
 				engine AS 'engine',
-				FLOOR( data_length / 1024 / 1024 ) 'data'
+				CAST( data_length / 1024 / 1024 AS UNSIGNED ) AS 'data'
 			FROM INFORMATION_SCHEMA.TABLES
 			WHERE TABLE_NAME = 'wp_posts'
 			ORDER BY name ASC;"