Add missing access modifiers to methods in WP_Query. Add magic methods for __get(), __set(), __isset(), __unset(), and __call().

Add unit test for magic methods.

See #27881, #22234.


git-svn-id: https://develop.svn.wordpress.org/trunk@28523 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/tests/basic.php

@@ -145,4 +145,18 @@ EOF;
 
 		$this->assertEquals( 'maybe', $basic->callMe() );
 	}
+
+	function test_subclass_isset() {
+		$basic = new Basic_Subclass();
+
+		$this->assertTrue( isset( $basic->foo ) );
+	}
+
+	function test_subclass_unset() {
+		$basic = new Basic_Subclass();
+
+		unset( $basic->foo );
+
+		$this->assertFalse( isset( $basic->foo ) );
+	}
 }