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PhabricatorFerretEngineTestCase.php
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			<?php

			final class PhabricatorFerretEngineTestCase
			extends PhabricatorTestCase {

			public function testTermsCorpus() {
			$map = array(
			'Hear ye, hear ye!' => ' Hear ye hear ye ',
			"Thou whom'st've art worthy." => " Thou whom'st've art worthy ",
			'Guaranteed to contain "food".' => ' Guaranteed to contain food ',
			'http://example.org/path/to/file.jpg' =>
			' http example org path to file jpg ',
			);

			$engine = new ManiphestTaskFerretEngine();

			foreach ($map as $input => $expect) {
			$actual = $engine->newTermsCorpus($input);

			$this->assertEqual(
			$expect,
			$actual,
			pht('Terms corpus for: %s', $input));
			}
			}

			public function testTermNgramExtraction() {
			$snowman = "\xE2\x98\x83";

			$map = array(
			'a' => array(' a '),
			'ab' => array(' ab', 'ab '),
			'abcdef' => array(' ab', 'abc', 'bcd', 'cde', 'def', 'ef '),
			"{$snowman}" => array(" {$snowman} "),
			"x{$snowman}y" => array(
			" x{$snowman}",
			"x{$snowman}y",
			"{$snowman}y ",
			),
			"{$snowman}{$snowman}" => array(
			" {$snowman}{$snowman}",
			"{$snowman}{$snowman} ",
			),
			);

			$ngram_engine = new PhabricatorSearchNgramEngine();

			foreach ($map as $input => $expect) {
			$actual = $ngram_engine->getTermNgramsFromString($input);
			$this->assertEqual(
			$actual,
			$expect,
			pht('Term ngrams for: %s.', $input));
			}
			}

			}