mysql57 test: set default value for timestamp explicitly

Because MySQL 5.7 enables NO_ZERO_DATE by default. It disables DEFAULT 0.

mysql-test/mroonga/storage/column/timestamp/r/with_index.result

@@ -2,17 +2,17 @@ DROP TABLE IF EXISTS diaries;
 CREATE TABLE diaries (
 id INT PRIMARY KEY AUTO_INCREMENT,
 title TEXT,
-created_at TIMESTAMP,
-updated_at TIMESTAMP,
+created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
 KEY (updated_at)
 ) DEFAULT CHARSET UTF8;
 SHOW CREATE TABLE diaries;
 Table	Create Table
 diaries	CREATE TABLE `diaries` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
   `title` text,
-  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-  `updated_at` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  `updated_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
   PRIMARY KEY (`id`),
   KEY `updated_at` (`updated_at`)
 ) ENGINE=Mroonga DEFAULT CHARSET=utf8

mysql-test/mroonga/storage/column/timestamp/t/with_index.test

@@ -1,4 +1,4 @@
-# Copyright(C) 2012 Kouhei Sutou <kou@clear-code.com>
+# Copyright(C) 2012-2016 Kouhei Sutou <kou@clear-code.com>
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
@@ -23,8 +23,8 @@ DROP TABLE IF EXISTS diaries;
 CREATE TABLE diaries (
   id INT PRIMARY KEY AUTO_INCREMENT,
   title TEXT,
-  created_at TIMESTAMP,
-  updated_at TIMESTAMP,
+  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
   KEY (updated_at)
 ) DEFAULT CHARSET UTF8;
 SHOW CREATE TABLE diaries;