Add access modifiers to methods and members of list table classes:

* `WP_List_Table` is the base class that implements `__get()` and `__call()` for BC
* Adds unit tests to confirm that subclasses properly inherit magic methods
* Add modifiers to subclasses: `WP_Links_List_Table`, `WP_Media_List_Table`, `WP_MS_Sites_List_Table`, `WP_MS_Themes_List_Table`, `WP_MS_Users_List_Table`, `WP_Plugin_Install_List_Table`, `WP_Plugins_List_Table`, `WP_Posts_List_Table`, `WP_Terms_List_Table`, `WP_Theme_Install_List_Table`, `WP_Themes_List_Table`

See #27881, #22234.


git-svn-id: https://develop.svn.wordpress.org/trunk@28493 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/includes/functions.php

@@ -45,7 +45,17 @@ function _delete_all_posts() {
 class Basic_Object {
 	private $foo = 'bar';
 
-	function __get( $name ) {
+	public function __get( $name ) {
 		return $this->$name;
 	}
+
+	public function __call( $name, $arguments ) {
+		return call_user_func_array( array( $this, $name ), $arguments );
+	}
+
+	private function callMe() {
+		return 'maybe';
+	}
 }
+
+class Basic_Subclass extends Basic_Object {}

tests/phpunit/tests/basic.php

@@ -127,4 +127,22 @@ EOF;
 
 		$this->assertEquals( 'bar', $basic->foo );
 	}
+
+	function test_subclass_magic_getter() {
+		$basic = new Basic_Subclass();
+
+		$this->assertEquals( 'bar', $basic->foo );
+	}
+
+	function test_call_method() {
+		$basic = new Basic_Object();
+
+		$this->assertEquals( 'maybe', $basic->callMe() );
+	}
+
+	function test_subclass_call_method() {
+		$basic = new Basic_Subclass();
+
+		$this->assertEquals( 'maybe', $basic->callMe() );
+	}
 }