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Posts, Post Types: Introduce new functions for determining if a post has a parent (has_post_parent()) and to fetch the post parent (get_post_parent()).

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These functions are simple but reduce the logic needed in themes and plugins.

Props ramiy, sebastian.pisula, birgire, audrasjb, xkon

Fixes #33045


git-svn-id: https://develop.svn.wordpress.org/trunk@50127 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
John Blackbourn
2021-02-01 21:20:44 +00:00
parent 5c5f859d45
commit 729bb10f31
2 changed files with 86 additions and 0 deletions
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61
tests/phpunit/tests/post/template.php
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@@ -452,4 +452,65 @@ NO;
$this->assertRegExp( '/><li.*>|<\/li></U', $menu );
}
/**
* @ticket 33045
*/
public function test_get_parent_post() {
$post = array(
'post_status' => 'publish',
'post_type' => 'page',
);
// Insert two initial posts.
$parent_id = self::factory()->post->create( $post );
$child_id = self::factory()->post->create( $post );
// Test if child get_parent_post() post returns Null by default.
$parent = get_parent_post( $child_id );
$this->assertNull( $parent );
// Update child post with a parent.
wp_update_post(
array(
'ID' => $child_id,
'post_parent' => $parent_id,
)
);
// Test if child get_parent_post() post returns the parent object.
$parent = get_parent_post( $child_id );
$this->assertNotNull( $parent );
$this->assertSame( $parent_id, $parent->ID );
}
/**
* @ticket 33045
*/
public function test_has_parent_post() {
$post = array(
'post_status' => 'publish',
'post_type' => 'page',
);
// Insert two initial posts.
$parent_id = self::factory()->post->create( $post );
$child_id = self::factory()->post->create( $post );
// Test if child has_parent_post() post returns False by default.
$parent = has_parent_post( $child_id );
$this->assertFalse( $parent );
// Update child post with a parent.
wp_update_post(
array(
'ID' => $child_id,
'post_parent' => $parent_id,
)
);
// Test if child has_parent_post() returns True.
$parent = has_parent_post( $child_id );
$this->assertTrue( $parent );
}
}