Ticket #44813: 44813.tests.diff

tests/phpunit/tests/admin/includesListTable.php

@@ -293 +293 @@
 
                 $this->assertNotContains( 'id="delete_all"', $output );
         }
+
+        /**
+         * @ticket 44813
+         */
+        public function test_filter_admin_get_list_table() {
+                add_filter( 'admin_get_list_table_instance', array( $this, 'filter_admin_get_list_table_callback' ) );
+                $table = _get_list_table( 'WP_Comments_List_Table', array( 'screen' => 'edit-comments' ) );
+
+                $this->assertContains( 'Mock_WP_Comments_List_Table', get_class( $table ) );
+
+                remove_filter( 'admin_get_list_table_instance', array( $this, 'filter_admin_get_list_table_callback' ) );
+
+                add_filter( 'admin_get_list_table_instance', array( $this, 'filter_admin_get_list_table_callback_invalid' ) );
+
+                $this->assertFalse( _get_list_table( 'WP_Comments_List_Table' ) );
+
+                remove_filter( 'admin_get_list_table_instance', array( $this, 'filter_admin_get_list_table_callback_invalid' ) );
+        }
+
+        public function filter_admin_get_list_table_callback() {
+                return $this->createMock( 'WP_Comments_List_Table' );
+        }
+
+        public function filter_admin_get_list_table_callback_invalid() {
+                return 'invalid_class';
+        }
 }