Wordpress/tests/phpunit/tests/formatting/LinksAddTarget.php

<?php
/**
 * @group formatting
 */
class Tests_Formatting_LinksAddTarget extends WP_UnitTestCase {
	/**
	 * Test Content DataProvider
	 *
	 * array ( input_txt, converted_output_txt)
	 */
	public function get_input_output() {
		return array (
			array (
				'MY CONTENT <div> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC">LINK</a> HERE </div> END TEXT',
				null,
				null,
				'MY CONTENT <div> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC" target="_blank">LINK</a> HERE </div> END TEXT'
			),
			array (
				'MY CONTENT <div> SOME ADDITIONAL TEXT <A href="XYZ" src="ABC">LINK</A> HERE </div> END TEXT',
				null,
				null,
				'MY CONTENT <div> SOME ADDITIONAL TEXT <A href="XYZ" src="ABC" target="_blank">LINK</A> HERE </div> END TEXT'
			),
			array (
				'MY CONTENT <div> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC">LINK</a> HERE </div> <a href="XYZ"  >LINK</a>END TEXT',
				null,
				null,
				'MY CONTENT <div> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC" target="_blank">LINK</a> HERE </div> <a href="XYZ"   target="_blank">LINK</a>END TEXT'
			),
			array (
				'MY CONTENT <div> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC">LINK</a> HERE </div> <span>END TEXT</span>',
				"_top",
				null,
				'MY CONTENT <div> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC" target="_top">LINK</a> HERE </div> <span>END TEXT</span>'
			),
			array (
				'MY CONTENT <div> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC">LINK</a> HERE </div> <span>END TEXT</span>',
				"_top",
				array( 'span'),
				'MY CONTENT <div> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC">LINK</a> HERE </div> <span target="_top">END TEXT</span>'
			),
			array (
				'MY CONTENT <div> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC">LINK</a> HERE </div> <span>END TEXT</span>',
				"_top",
				array( 'SPAN'),
				'MY CONTENT <div> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC">LINK</a> HERE </div> <span target="_top">END TEXT</span>'
			),
			array (
				'MY CONTENT <div> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC">LINK</a> HERE </div> <span target="_top">END TEXT</span>',
				"_top",
				array( 'span', 'div'),
				'MY CONTENT <div target="_top"> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC">LINK</a> HERE </div> <span target="_top">END TEXT</span>'
			),
			array (
				'MY CONTENT <div target=\'ABC\'> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC">LINK</a> HERE </div> <span target="xyz">END TEXT</span>',
				"_top",
				array( 'span', 'div'),
				'MY CONTENT <div target="_top"> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC">LINK</a> HERE </div> <span target="_top">END TEXT</span>'
			),
			array (
				'MY CONTENT <div> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC">LINK</a> HERE </div> <span target="xyz" src="ABC">END TEXT</span>',
				"_top",
				array( 'span'),
				'MY CONTENT <div> SOME ADDITIONAL TEXT <a href="XYZ" src="ABC">LINK</a> HERE </div> <span src="ABC" target="_top">END TEXT</span>'
			),
		);
	}

	/**
	 * Validate the normalize_whitespace function
	 *
	 * @dataProvider get_input_output
	 */
	function test_normalize_whitespace( $content, $target, $tags, $exp_str ) {
		if ( true === is_null( $target ) ) {
			$this->assertEquals( $exp_str, links_add_target( $content ) );
		} elseif ( true === is_null( $tags ) ) {
			$this->assertEquals( $exp_str, links_add_target( $content, $target ) );
		} else {
			$this->assertEquals( $exp_str, links_add_target( $content, $target, $tags ) );
		}
	}
}