Ticket #21960: export.php

<?php
// Test the output of Export Building functions

include_once(ABSPATH . 'wp-admin/includes/export.php');

/**
 * @group export
 */
class Test_Export_Helpers extends WP_UnitTestCase {

        function test_wxr_authors_list() {
                $editor_id = $this->factory->user->create( array( 'role' => 'editor' ) );
                $admin_id = $this->factory->user->create( array( 'role' => 'administrator' ) );
                
                $this->factory->post->create( array( 'post_author' => $editor_id ) );
                $this->factory->post->create( array( 'post_author' => $admin_id, 'post_status' => 'auto-draft' ) );

                ob_start();
                wxr_authors_list();
                $list = ob_get_clean();
                $count = preg_match_all("|<wp:author_id>(.*)</wp:author_id>|", $list, $authors );

                $this->assertEquals( $count, 1 );
                $this->assertEquals( $authors[1][0], $editor_id );
                
        }
}

function wxr_authors_list() {
        global $wpdb;

        $authors = array();
        $results = $wpdb->get_results( "SELECT DISTINCT post_author FROM $wpdb->posts WHERE post_status" );
        foreach ( (array) $results as $result )
                $authors[] = get_userdata( $result->post_author );

        $authors = array_filter( $authors );

        foreach ( $authors as $author ) {
                echo "\t<wp:author>";
                echo '<wp:author_id>' . $author->ID . '</wp:author_id>';
                echo '<wp:author_login>' . $author->user_login . '</wp:author_login>';
                echo '<wp:author_email>' . $author->user_email . '</wp:author_email>';
                echo '<wp:author_display_name>' . wxr_cdata( $author->display_name ) . '</wp:author_display_name>';
                echo '<wp:author_first_name>' . wxr_cdata( $author->user_firstname ) . '</wp:author_first_name>';
                echo '<wp:author_last_name>' . wxr_cdata( $author->user_lastname ) . '</wp:author_last_name>';
                echo "</wp:author>\n";
        }
}

function wxr_authors_list_fixed() {
        global $wpdb;

        $authors = array();
        $results = $wpdb->get_results( "SELECT DISTINCT post_author FROM $wpdb->posts WHERE post_status != 'auto-draft'" );
        foreach ( (array) $results as $result )
                $authors[] = get_userdata( $result->post_author );

        $authors = array_filter( $authors );

        foreach ( $authors as $author ) {
                echo "\t<wp:author>";
                echo '<wp:author_id>' . $author->ID . '</wp:author_id>';
                echo '<wp:author_login>' . $author->user_login . '</wp:author_login>';
                echo '<wp:author_email>' . $author->user_email . '</wp:author_email>';
                echo '<wp:author_display_name>' . wxr_cdata( $author->display_name ) . '</wp:author_display_name>';
                echo '<wp:author_first_name>' . wxr_cdata( $author->user_firstname ) . '</wp:author_first_name>';
                echo '<wp:author_last_name>' . wxr_cdata( $author->user_lastname ) . '</wp:author_last_name>';
                echo "</wp:author>\n";
        }
}

function wxr_cdata( $str ) {
        if ( seems_utf8( $str ) == false )
                $str = utf8_encode( $str );

        // $str = ent2ncr(esc_html($str));
        $str = '<![CDATA[' . str_replace( ']]>', ']]]]><![CDATA[>', $str ) . ']]>';

        return $str;
}