PhutilTsprintfTestCase.php
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			<?php

			final class PhutilTsprintfTestCase extends PhutilTestCase {

			public function testTsprintf() {
			$this->assertEqual(
			'<NUL>',
			(string)tsprintf('%s', "\0"));

			$this->assertEqual(
			'<ESC>[31mred<ESC>[39m',
			(string)tsprintf('%s', "\x1B[31mred\x1B[39m"));

			$block = "1\r\n2\r3\n4";

			$this->assertEqual(
			'1<CR><LF>2<CR>3<LF>4',
			(string)tsprintf('%s', $block));
			$this->assertEqual(
			"1\r\n2<CR>3\n4",
			(string)tsprintf('%B', $block));
			}

			}

libphutil/src/xsprintf/__tests__/PhutilTsprintfTestCase.php4e0febf56d83stable