wordpress-develop/tests/phpunit/tests/formatting/wpRelNofollow.php

<?php

/**
 * @group formatting
 */
class Tests_Formatting_wpRelNofollow extends WP_UnitTestCase {

	/**
	 * @ticket 9959
	 */
	public function test_add_no_follow() {
		if ( PHP_VERSION_ID >= 80100 ) {
			/*
			 * For the time being, ignoring PHP 8.1 "null to non-nullable" deprecations coming in
			 * via hooked in filter functions until a more structural solution to the
			 * "missing input validation" conundrum has been architected and implemented.
			 */
			$this->expectDeprecation();
			$this->expectDeprecationMessageMatches( '`Passing null to parameter \#[0-9]+ \(\$[^\)]+\) of type [^ ]+ is deprecated`' );
		}

		$content  = '<p>This is some cool <a href="/">Code</a></p>';
		$expected = '<p>This is some cool <a href=\"/\" rel=\"nofollow\">Code</a></p>';
		$this->assertSame( $expected, wp_rel_nofollow( $content ) );
	}

	/**
	 * @ticket 9959
	 */
	public function test_convert_no_follow() {
		if ( PHP_VERSION_ID >= 80100 ) {
			/*
			 * For the time being, ignoring PHP 8.1 "null to non-nullable" deprecations coming in
			 * via hooked in filter functions until a more structural solution to the
			 * "missing input validation" conundrum has been architected and implemented.
			 */
			$this->expectDeprecation();
			$this->expectDeprecationMessageMatches( '`Passing null to parameter \#[0-9]+ \(\$[^\)]+\) of type [^ ]+ is deprecated`' );
		}

		$content  = '<p>This is some cool <a href="/" rel="weird">Code</a></p>';
		$expected = '<p>This is some cool <a href=\"/\" rel=\"weird nofollow\">Code</a></p>';
		$this->assertSame( $expected, wp_rel_nofollow( $content ) );
	}

	/**
	 * @ticket 11360
	 * @dataProvider data_wp_rel_nofollow
	 */
	public function test_wp_rel_nofollow( $input, $output, $expect_deprecation = false ) {
		if ( true === $expect_deprecation && PHP_VERSION_ID >= 80100 ) {
			/*
			 * For the time being, ignoring PHP 8.1 "null to non-nullable" deprecations coming in
			 * via hooked in filter functions until a more structural solution to the
			 * "missing input validation" conundrum has been architected and implemented.
			 */
			$this->expectDeprecation();
			$this->expectDeprecationMessageMatches( '`Passing null to parameter \#[0-9]+ \(\$[^\)]+\) of type [^ ]+ is deprecated`' );
		}

		$this->assertSame( wp_slash( $output ), wp_rel_nofollow( $input ) );
	}

	public function data_wp_rel_nofollow() {
		$home_url_http  = set_url_scheme( home_url(), 'http' );
		$home_url_https = set_url_scheme( home_url(), 'https' );

		return array(
			array(
				'<a href="">Double Quotes</a>',
				'<a href="" rel="nofollow">Double Quotes</a>',
				true,
			),
			array(
				'<a href="https://wordpress.org">Double Quotes</a>',
				'<a href="https://wordpress.org" rel="nofollow">Double Quotes</a>',
			),
			array(
				"<a href='https://wordpress.org'>Single Quotes</a>",
				"<a href='https://wordpress.org' rel=\"nofollow\">Single Quotes</a>",
			),
			array(
				'<a href="https://wordpress.org" title="Title">Multiple attributes</a>',
				'<a href="https://wordpress.org" title="Title" rel="nofollow">Multiple attributes</a>',
			),
			array(
				'<a title="Title" href="https://wordpress.org">Multiple attributes</a>',
				'<a title="Title" href="https://wordpress.org" rel="nofollow">Multiple attributes</a>',
			),
			array(
				'<a data-someflag href="https://wordpress.org">Multiple attributes</a>',
				'<a data-someflag href="https://wordpress.org" rel="nofollow">Multiple attributes</a>',
			),
			array(
				'<a  data-someflag  title="Title"  href="https://wordpress.org" onclick=""  >Everything at once</a>',
				'<a  data-someflag  title="Title"  href="https://wordpress.org" onclick=""   rel="nofollow">Everything at once</a>',
			),
			array(
				'<a href="' . $home_url_http . '/some-url">Home URL (http)</a>',
				'<a href="' . $home_url_http . '/some-url">Home URL (http)</a>',
			),
			array(
				'<a href="' . $home_url_https . '/some-url">Home URL (https)</a>',
				'<a href="' . $home_url_https . '/some-url">Home URL (https)</a>',
			),
		);
	}

	public function test_append_no_follow_with_valueless_attribute() {
		if ( PHP_VERSION_ID >= 80100 ) {
			/*
			 * For the time being, ignoring PHP 8.1 "null to non-nullable" deprecations coming in
			 * via hooked in filter functions until a more structural solution to the
			 * "missing input validation" conundrum has been architected and implemented.
			 */
			$this->expectDeprecation();
			$this->expectDeprecationMessageMatches( '`Passing null to parameter \#[0-9]+ \(\$[^\)]+\) of type [^ ]+ is deprecated`' );
		}

		$content  = '<p>This is some cool <a href="demo.com" download rel="hola">Code</a></p>';
		$expected = '<p>This is some cool <a href=\"demo.com\" download rel=\"hola nofollow\">Code</a></p>';
		$this->assertSame( $expected, wp_rel_nofollow( $content ) );
	}
}