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Tests: Add unit test coverage for the_feed_link() and post_comments_feed_link() #14493

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Tests: Add unit test coverage for the_feed_link() and post_comments_feed_link() #14493

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151 changes: 151 additions & 0 deletions tests/phpunit/tests/link/postCommentsFeedLink.php
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<?php

/**
* @group link
*
* @covers ::post_comments_feed_link
*/
class Tests_Link_PostCommentsFeedLink extends WP_UnitTestCase {

/**
* Test post ID.
*
* @var int
*/
protected static $post_id;

/**
* Set up before class.
*
* @param WP_UnitTest_Factory $factory Test factory.
*/
public static function wpSetUpBeforeClass( WP_UnitTest_Factory $factory ) {
self::$post_id = $factory->post->create(
array(
'post_title' => 'Sample Post for Feed',
)
);
}

/**
* Tests post_comments_feed_link() with default link text on plain permalinks.
*
* @ticket 65819
*/
public function test_post_comments_feed_link_default_text() {
$this->set_permalink_structure( '' );

$expected_url = get_post_comments_feed_link( self::$post_id );
$expected = '<a href="' . esc_url( $expected_url ) . '">Comments Feed</a>';

ob_start();
post_comments_feed_link( '', self::$post_id );
$output = ob_get_clean();

$this->assertSame( $expected, $output );
}

/**
* Tests post_comments_feed_link() with custom link text.
*
* @ticket 65819
*/
public function test_post_comments_feed_link_custom_text() {
$this->set_permalink_structure( '' );

$expected_url = get_post_comments_feed_link( self::$post_id );
$expected = '<a href="' . esc_url( $expected_url ) . '">Subscribe via RSS</a>';

ob_start();
post_comments_feed_link( 'Subscribe via RSS', self::$post_id );
$output = ob_get_clean();

$this->assertSame( $expected, $output );
}

/**
* Tests post_comments_feed_link() with pretty permalink structure.
*
* @ticket 65819
*/
public function test_post_comments_feed_link_pretty_permastruct() {
$this->set_permalink_structure( '/%year%/%monthnum%/%day%/%postname%/' );

$expected_url = get_post_comments_feed_link( self::$post_id );
$expected = '<a href="' . esc_url( $expected_url ) . '">Comments Feed</a>';

ob_start();
post_comments_feed_link( '', self::$post_id );
$output = ob_get_clean();

$this->assertSame( $expected, $output );
}

/**
* Tests post_comments_feed_link() defaulting to global $post when post_id is 0.
*
* @ticket 65819
*/
public function test_post_comments_feed_link_defaults_to_global_post() {
global $post;

$this->set_permalink_structure( '' );

$original_post = $post;
$post = get_post( self::$post_id );

$expected_url = get_post_comments_feed_link( self::$post_id );
$expected = '<a href="' . esc_url( $expected_url ) . '">Comments Feed</a>';

ob_start();
post_comments_feed_link();
$output = ob_get_clean();

$post = $original_post;

$this->assertSame( $expected, $output );
}

/**
* Tests post_comments_feed_link() with a custom feed type.
*
* @ticket 65819
*/
public function test_post_comments_feed_link_custom_feed_type() {
$this->set_permalink_structure( '' );

$expected_url = get_post_comments_feed_link( self::$post_id, 'atom' );
$expected = '<a href="' . esc_url( $expected_url ) . '">Atom Comments</a>';

ob_start();
post_comments_feed_link( 'Atom Comments', self::$post_id, 'atom' );
$output = ob_get_clean();

$this->assertSame( $expected, $output );
}

/**
* Tests the 'post_comments_feed_link_html' filter hook.
*
* @ticket 65819
*/
public function test_post_comments_feed_link_html_filter() {
$this->set_permalink_structure( '' );

add_filter(
'post_comments_feed_link_html',
static function ( $link, $post_id, $feed ) {
return '<span class="post-feed" data-post="' . (int) $post_id . '" data-feed="' . esc_attr( $feed ) . '">' . $link . '</span>';
},
10,
3
);

ob_start();
post_comments_feed_link( 'Comments', self::$post_id, 'atom' );
$output = ob_get_clean();

$this->assertStringStartsWith( '<span class="post-feed" data-post="' . self::$post_id . '" data-feed="atom"><a', $output );
$this->assertStringEndsWith( 'Comments</a></span>', $output );
}
}
106 changes: 106 additions & 0 deletions tests/phpunit/tests/link/theFeedLink.php
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<?php

/**
* @group link
*
* @covers ::the_feed_link
*/
class Tests_Link_TheFeedLink extends WP_UnitTestCase {

/**
* Tests the_feed_link() with plain permalink structure and default feed.
*
* @ticket 65819
*/
public function test_the_feed_link_plain_permastruct_default_feed() {
$this->set_permalink_structure( '' );

$expected_url = home_url( '?feed=' . get_default_feed() );
$expected = '<a href="' . esc_url( $expected_url ) . '">Entries RSS</a>';

ob_start();
the_feed_link( 'Entries RSS' );
$output = ob_get_clean();

$this->assertSame( $expected, $output );
}

/**
* Tests the_feed_link() with pretty permalink structure and default feed.
*
* @ticket 65819
*/
public function test_the_feed_link_pretty_permastruct_default_feed() {
$this->set_permalink_structure( '/%year%/%monthnum%/%day%/%postname%/' );

$expected_url = home_url( '/feed/' );
$expected = '<a href="' . esc_url( $expected_url ) . '">Entries Feed</a>';

ob_start();
the_feed_link( 'Entries Feed' );
$output = ob_get_clean();

$this->assertSame( $expected, $output );
}

/**
* Tests the_feed_link() with custom feed type.
*
* @ticket 65819
*/
public function test_the_feed_link_custom_feed_type() {
$this->set_permalink_structure( '' );

$expected_url = home_url( '?feed=atom' );
$expected = '<a href="' . esc_url( $expected_url ) . '">Atom Feed</a>';

ob_start();
the_feed_link( 'Atom Feed', 'atom' );
$output = ob_get_clean();

$this->assertSame( $expected, $output );
}

/**
* Tests the_feed_link() with pretty permalinks and custom feed type.
*
* @ticket 65819
*/
public function test_the_feed_link_pretty_permastruct_custom_feed_type() {
$this->set_permalink_structure( '/%year%/%monthnum%/%day%/%postname%/' );

$expected_url = home_url( '/feed/atom/' );
$expected = '<a href="' . esc_url( $expected_url ) . '">Atom Feed</a>';

ob_start();
the_feed_link( 'Atom Feed', 'atom' );
$output = ob_get_clean();

$this->assertSame( $expected, $output );
}

/**
* Tests the 'the_feed_link' filter hook.
*
* @ticket 65819
*/
public function test_the_feed_link_filter() {
$this->set_permalink_structure( '' );

add_filter(
'the_feed_link',
static function ( $link, $feed ) {
return '<div class="feed-wrapper" data-feed="' . esc_attr( $feed ) . '">' . $link . '</div>';
},
10,
2
);

ob_start();
the_feed_link( 'Custom Filtered Feed', 'atom' );
$output = ob_get_clean();

$this->assertStringStartsWith( '<div class="feed-wrapper" data-feed="atom"><a', $output );
$this->assertStringEndsWith( 'Custom Filtered Feed</a></div>', $output );
}
}
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