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WordPress RSS Unit Tests
<?php
/**
* test the RSS 2.0 feed by generating a feed, parsing it, and checking that the
* parsed contents match the contents of the posts stored in the database. Since
* we're using a real XML parser, this confirms that the feed is valid, well formed,
* and contains the right stuff.
*
* @group feed
*/
class Tests_Feed_RSS2 extends WP_UnitTestCase {
function setUp() {
parent::setUp();
$this->factory->post->create_many( 25 );
$this->post_count = get_option('posts_per_rss');
$this->excerpt_only = get_option('rss_use_excerpt');
// this seems to break something
update_option('use_smilies', false);
}
function do_rss2() {
ob_start();
// nasty hack
global $post;
try {
@require(ABSPATH . 'wp-includes/feed-rss2.php');
$out = ob_get_clean();
} catch (Exception $e) {
$out = ob_get_clean();
throw($e);
}
return $out;
}
function test_rss() {
$this->go_to('/feed/');
$feed = $this->do_rss2();
$xml = xml_to_array($feed);
// get the rss element
$rss = xml_find($xml, 'rss');
// there should only be one rss element
$this->assertEquals(1, count($rss));
$this->assertEquals('2.0', $rss[0]['attributes']['version']);
$this->assertEquals('http://purl.org/rss/1.0/modules/content/', $rss[0]['attributes']['xmlns:content']);
$this->assertEquals('http://wellformedweb.org/CommentAPI/', $rss[0]['attributes']['xmlns:wfw']);
$this->assertEquals('http://purl.org/dc/elements/1.1/', $rss[0]['attributes']['xmlns:dc']);
// rss should have exactly one child element (channel)
$this->assertEquals(1, count($rss[0]['child']));
}
/**
* Test potential encoding and formatting problems.
* @return [type] [description]
*/
function test_formatting() {
// Title test for #9993, 9992
$title = '& > test <';
$title_encoded = '&amp; &gt; test &lt;';
$this->assertEquals( $title, apply_filters( 'wp_title_rss', $title ) );
$this->assertEquals( $title_encoded, apply_filters( 'the_title_rss', $title ) );
$title = '<test>This is a test</test>';
$title_encoded = '&lt;test&gt;This is a test&lt;/test&gt;';
$this->assertEquals( $title, apply_filters( 'wp_title_rss', $title ) );
$this->assertEquals( $title_encoded, apply_filters( 'the_title_rss', $title ) );
$title = 'Use <h1> to <h6> for headings, <p> for paragraphy, but not formatting';
$title_encoded = 'Use &lt;h1&gt; to &lt;h6&gt; for headings, &lt;p&gt; for paragraphy, but not formatting';
$this->assertEquals( $title, apply_filters( 'wp_title_rss', $title ) );
$this->assertEquals( $title_encoded, apply_filters( 'the_title_rss', $title ) );
}
function test_channel() {
$this->go_to('/feed/');
$feed = $this->do_rss2();
$xml = xml_to_array($feed);
// get the rss -> channel element
$channel = xml_find($xml, 'rss', 'channel');
$this->assertTrue(empty($channel[0]['attributes']));
// This test is failing
$title = xml_find($xml, 'rss', 'channel', 'title');
$this->assertEquals(get_option('blogname'), $title[0]['content']);
$desc = xml_find($xml, 'rss', 'channel', 'description');
$this->assertEquals(get_option('blogdescription'), $desc[0]['content']);
$link = xml_find($xml, 'rss', 'channel', 'link');
$this->assertEquals(get_option('siteurl'), $link[0]['content']);
$pubdate = xml_find($xml, 'rss', 'channel', 'lastBuildDate');
$this->assertEquals(strtotime(get_lastpostmodified()), strtotime($pubdate[0]['content']));
}
function escape_xml( $str ) {
return $str;
}
/**
* @ticket UT32
*/
function test_items() {
$this->go_to('/feed/');
$feed = $this->do_rss2();
$xml = xml_to_array($feed);
// get all the rss -> channel -> item elements
$items = xml_find($xml, 'rss', 'channel', 'item');
$posts = get_posts('numberposts='.$this->post_count);
// check each of the items against the known post data
foreach ( $items as $key => $item ) {
// Get post for comparison
$guid = xml_find( $items[$key]['child'], 'guid' );
preg_match( '/\?p=(\d+)/', $guid[0]['content'], $matches );
$post = get_post( $matches[1] );
// title
$title = xml_find( $items[$key]['child'], 'title' );
$this->assertEquals( $post->post_title, $title[0]['content'] );
// link
$link = xml_find( $items[$key]['child'], 'link' );
$this->assertEquals( get_permalink( $post ), $link[0]['content'] );
// comment link
$comments_link = xml_find( $items[$key]['child'], 'comments' );
$this->assertEquals( get_permalink( $post) . '#comments', $comments_link[0]['content'] );
// pub date
$pubdate = xml_find( $items[$key]['child'], 'pubDate' );
$this->assertEquals( strtotime( $post->post_date_gmt ), strtotime( $pubdate[0]['content'] ) );
// author
$creator = xml_find( $items[$key]['child'], 'dc:creator' );
$user = new WP_User( $post->post_author );
$this->assertEquals( $user->user_login, $creator[0]['content'] );
// categories (perhaps multiple)
$categories = xml_find( $items[$key]['child'], 'category' );
$cats = array();
foreach ( get_the_category( $post->ID ) as $term ) {
$cats[] = $term->name;
}
$tags = get_the_tags( $post->ID );
if ( $tags ) {
foreach ( get_the_tags( $post->ID ) as $term ) {
$cats[] = $term->name;
}
}
$cats = array_filter( $cats );
// should be the same number of categories
$this->assertEquals( count( $cats ), count( $categories ) );
// ..with the same names
foreach ( $cats as $id => $cat ) {
$this->assertEquals( $cat, $categories[$id]['content']);
}
// GUID
$guid = xml_find( $items[$key]['child'], 'guid' );
$this->assertEquals('false', $guid[0]['attributes']['isPermaLink'] );
$this->assertEquals( $post->guid, $guid[0]['content'] );
// description/excerpt
if ( !empty( $post->post_excerpt ) ) {
$description = xml_find( $items[$key]['child'], 'description' );
$this->assertEquals( trim( $post->post_excerpt ), trim( $description[0]['content'] ) );
}
// post content
if ( !$this->excerpt_only ) {
$content = xml_find( $items[$key]['child'], 'content:encoded' );
$this->assertEquals( trim( apply_filters( 'the_content', $post->post_content ) ), trim( $content[0]['content'] ) );
}
// comment rss
$comment_rss = xml_find( $items[$key]['child'], 'wfw:commentRss' );
$this->assertEquals( html_entity_decode( get_post_comments_feed_link( $post->ID) ), $comment_rss[0]['content'] );
}
}
}
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