multiline-shortcode-tests.php

<?php
function test_multiple_shortcode_unautop() {
	$test_strings = array(
		"[footag][footag]\n",
		"[footag]\n[footag]\n",
		"[footag]\n\n[footag]\n",
	);

	foreach( $test_strings as $test_string ) {
		$actual = shortcode_unautop( wpautop( $test_string ) );
		$this->assertEquals( trim( $test_string ), trim( $actual ) );
	}
}