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PhabricatorMacroTestCase.php
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			<?php

			final class PhabricatorMacroTestCase
			extends PhabricatorTestCase {

			public function testMacroNames() {
			$lit = "\xF0\x9F\x94\xA5";
			$combining_diaeresis = "\xCC\x88";

			$cases = array(
			// Only 2 glyphs long.
			"u{$combining_diaeresis}n" => false,
			"{$lit}{$lit}" => false,

			// Too short.
			'a' => false,
			'' => false,

			// Bad characters.
			'yes!' => false,
			"{$lit} {$lit} {$lit}" => false,
			"aaa\nbbb" => false,
			'aaa~' => false,
			'aaa`' => false,

			// Special rejections for only latin symbols.
			'---' => false,
			'___' => false,
			'-_-' => false,
			':::' => false,
			'-_:' => false,

			"{$lit}{$lit}{$lit}" => true,
			'bwahahaha' => true,
			"u{$combining_diaeresis}nt" => true,
			'a-a-a-a' => true,
			);

			foreach ($cases as $input => $expect) {
			$this->assertEqual(
			$expect,
			PhabricatorMacroNameTransaction::isValidMacroName($input),
			pht('Validity of macro "%s"', $input));
			}
			}
			}