wordpress-develop/tests/phpunit/tests/formatting/Utf8UriEncode.php

<?php

/**
 * @group formatting
 */
class Tests_Formatting_Utf8UriEncode extends WP_UnitTestCase {

	/**
	 * Non-ASCII UTF-8 characters should be percent encoded. Spaces etc.
	 * are dealt with elsewhere.
	 *
	 * @dataProvider data
	 */
	function test_percent_encodes_non_reserved_characters( $utf8, $urlencoded ) {
		$this->assertEquals( $urlencoded, utf8_uri_encode( $utf8 ) );
	}

	/**
	 * @dataProvider data
	 */
	function test_output_is_not_longer_than_optional_length_argument( $utf8, $unused_for_this_test ) {
		$max_length = 30;
		$this->assertTrue( strlen( utf8_uri_encode( $utf8, $max_length ) ) <= $max_length );
	}

	function data() {
		$utf8_urls     = file( DIR_TESTDATA . '/formatting/utf-8/utf-8.txt' );
		$urlencoded    = file( DIR_TESTDATA . '/formatting/utf-8/urlencoded.txt' );
		$data_provided = array();
		foreach ( $utf8_urls as $key => $value ) {
			$data_provided[] = array( trim( $value ), trim( $urlencoded[ $key ] ) );
		}
		return $data_provided;
	}
}