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<?php
/**
* Class TestAdjacentPostOrder
*
* @package DraggablePostOrder
*/
use Draggable_Post_Order\Draggable_Post_Order;
/**
* Sample test case.
*/
class TestAdjacentPostOrder extends WP_UnitTestCase {
/**
* An array of posts for testing.
*
* @var WP_Post[]
*/
public array $test_posts = [];
/**
* Runs the routine before each test is executed.
*/
public function setUp(): void {
parent::setUp();
add_post_type_support( 'post', Draggable_Post_Order::$post_type_feature );
// create three posts with order.
for ( $i = 1; $i <= 3; $i++ ) {
$id = $this->factory()->post->create();
update_post_meta( $id, Draggable_Post_Order::$meta_key, $i );
$this->test_posts[] = get_post( $id );
}
// since tests are loaded after init, run init manually.
Draggable_Post_Order::init();
}
/**
* Test previous and next post with creation order
*/
public function test_previous_next_post_creation_order() {
$first = $this->test_posts[0];
$second = $this->test_posts[1];
$third = $this->test_posts[2];
$this->go_to( '/?p=' . $second->ID );
$this->assertEquals( $first->ID, get_previous_post()->ID );
$this->assertEquals( $third->ID, get_next_post()->ID );
}
/**
* Test previous and next post jumbled order
*/
public function test_previous_next_post_jumbled_order() {
$first = $this->test_posts[1];
$second = $this->test_posts[2];
$third = $this->test_posts[0];
update_post_meta( $first->ID, Draggable_Post_Order::$meta_key, 1 );
update_post_meta( $second->ID, Draggable_Post_Order::$meta_key, 2 );
update_post_meta( $third->ID, Draggable_Post_Order::$meta_key, 3 );
// test whether the key was set properly.
$this->assertEquals( 2, get_post_meta( $second->ID, Draggable_Post_Order::$meta_key, true ) );
$this->go_to( '/?p=' . $second->ID );
$this->assertEquals( $first->ID, get_previous_post()->ID );
$this->assertEquals( $third->ID, get_next_post()->ID );
}
}
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