Index: tests/post/objects.php
===================================================================
--- tests/post/objects.php	(revision 975)
+++ tests/post/objects.php	(working copy)
@@ -9,16 +9,69 @@
 		$id = $this->factory->post->create();
 
 		$post = get_post( $id );
-
+		$this->assertInstanceOf( 'WP_Post', $post );
 		$this->assertEquals( $id, $post->ID );
+		$this->assertTrue( isset( $post->ancestors ) );
+		$this->assertEquals( array(), $post->ancestors );
 
-		$this->assertTrue( isset( $post->post_type ) );
+		// Unset and then verify that the magic method fills the property again
+		unset( $post->ancestors );
+		$this->assertEquals( array(), $post->ancestors );
+
+		// Magic get should make meta accessible as properties
+		add_post_meta( $id, 'test', 'test' );
+		$this->assertEquals( 'test', get_post_meta( $id, 'test', true ) );
+		$this->assertEquals( 'test', $post->test );
+
+		// Make sure meta does not eclipse true properties
+		add_post_meta( $id, 'post_type', 'dummy' );
+		$this->assertEquals( 'dummy', get_post_meta( $id, 'post_type', true ) );
 		$this->assertEquals( 'post', $post->post_type );
 
-		unset( $post->post_type );
-		$this->assertFalse( isset( $post->post_type ) );
+		// Excercise the output argument
+		$post = get_post( $id, ARRAY_A );
+		$this->assertInternalType( 'array', $post );
+		$this->assertEquals( 'post', $post[ 'post_type' ] );
+
+		$post = get_post( $id, ARRAY_N );
+		$this->assertInternalType( 'array', $post );
+		$this->assertFalse( isset( $post[ 'post_type' ] ) );
+		$this->assertTrue( in_array( 'post', $post ) );
+
+		$post = get_post( $id );
+		$post = get_post( $post, ARRAY_A );
+		$this->assertInternalType( 'array', $post );
+		$this->assertEquals( 'post', $post[ 'post_type' ] );
+		$this->assertEquals( $id, $post[ 'ID' ] );
+
+		// Should default to OBJECT when given invalid output argument
+		$post = get_post( $id, 'invalid-output-value' );
+		$this->assertInstanceOf( 'WP_Post', $post );
+		$this->assertEquals( $id, $post->ID );
 	}
 
+	function test_get_post_ancestors() {
+		$parent_id = $this->factory->post->create();
+		$child_id = $this->factory->post->create();
+		$grandchild_id = $this->factory->post->create();
+		$updated = wp_update_post( array( 'ID' => $child_id, 'post_parent' => $parent_id ) );
+		$this->assertEquals( $updated, $child_id );
+		$updated = wp_update_post( array( 'ID' => $grandchild_id, 'post_parent' => $child_id ) );
+		$this->assertEquals( $updated, $grandchild_id );
+
+		$this->assertEquals( array( $parent_id ), get_post( $child_id )->ancestors );
+		$this->assertEquals( array( $parent_id ), get_post_ancestors( $child_id ) );
+		$this->assertEquals( array( $parent_id ), get_post_ancestors( get_post( $child_id ) ) );
+
+		$this->assertEquals( array( $child_id, $parent_id ), get_post( $grandchild_id )->ancestors );
+		$this->assertEquals( array( $child_id, $parent_id ), get_post_ancestors( $grandchild_id ) );
+		$this->assertEquals( array( $child_id, $parent_id ), get_post_ancestors( get_post( $grandchild_id ) ) );
+
+		$this->assertEquals( array(), get_post( $parent_id )->ancestors );
+		$this->assertEquals( array(), get_post_ancestors( $parent_id ) );
+		$this->assertEquals( array(), get_post_ancestors( get_post( $parent_id ) ) );
+	}
+
 	function test_get_post_filter() {
 		$post = get_post( $this->factory->post->create( array(
 			'post_title' => "Mary's home"
@@ -36,6 +89,10 @@
 		$raw_post = get_post( $display_post, OBJECT, 'raw' );
 		$this->assertEquals( 'raw', $raw_post->filter );
 		$this->assertNotEquals( esc_js( "Mary's home" ), $raw_post->post_title );
+
+		$raw_post->filter( 'js' );
+		$this->assertEquals( 'js', $post->filter );
+		$this->assertEquals( esc_js( "Mary's home" ), $raw_post->post_title );
 	}
 
 	function test_get_post_identity() {