Ticket #51320: 51320.diff

src/wp-includes/post.php

@@ -4091 +4091 @@
                         if ( ! empty( $tax_object->default_term ) ) {
 
                                 // Filter out empty terms.
-                                if ( isset( $postarr['tax_input'] ) && is_array( $postarr['tax_input'][ $taxonomy ] ) ) {
+                                if ( isset( $postarr['tax_input'][ $taxonomy ] ) && is_array( $postarr['tax_input'][ $taxonomy ] ) ) {
                                         $postarr['tax_input'][ $taxonomy ] = array_filter( $postarr['tax_input'][ $taxonomy ] );
                                 }
 

tests/phpunit/tests/post.php

@@ -929 +929 @@
         }
 
         /**
+         * @ticket 51320
+         */
+        function test_create_post_with_taxonomies() {
+                $post_type = 'test_post_type';
+                $tax1      = 'test_tax1';
+                $tax2      = 'test_tax2';
+
+                register_post_type( $post_type, array( 'taxonomies' => array( $tax1, $tax2 ) ) );
+                register_taxonomy( $tax1, $post_type, array( 'default_term' => 'term_1' ) );
+                register_taxonomy( $tax2, $post_type, array( 'default_term' => 'term_2' ) );
+
+                $post_id = self::factory()->post->create( array( 'post_type' => $post_type ) );
+
+                $taxonomies = get_post_taxonomies( $post_id );
+
+                $this->assertContains( $tax1, $taxonomies );
+                $this->assertContains( $tax2, $taxonomies );
+        }
+
+        /**
          * @ticket 21212
          */
         function test_utf8mb3_post_saves_with_emoji() {