Fixes failing tests.

Author: dsawardekar

tests/WpGears/Gearman/ClientTest.php

@@ -135,7 +135,7 @@ function test_it_will_add_hook_to_gearman_client_if_present() {
 		$payload = array(
 			'hook'    => 'action_b',
 			'args'    => array(),
-			'blog_id' => is_multisite() ? get_current_blog_id() : false,
+			'blog_id' => function_exists( 'is_multisite' ) && is_multisite() ? get_current_blog_id() : false,
 		);
 
 		$group = defined( 'WP_ASYNC_TASK_SALT' ) ? WP_ASYNC_TASK_SALT . ':WP_Async_Task' : '';

tests/WpGears/PluginTest.php

@@ -10,6 +10,7 @@ function setUp() {
 		parent::setUp();
 
 		$this->plugin = new Plugin();
+		$this->config_prefix = 'A' . uniqid();
 	}
 
 	function tearDown() {