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HeraldTranscriptTestCase.php
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			<?php

			final class HeraldTranscriptTestCase extends PhabricatorTestCase {

			public function testTranscriptTruncation() {
			$long_string = str_repeat('x', 1024 * 1024);
			$short_string = str_repeat('x', 4096)."\n<...>";

			$long_array = array(
			'a' => $long_string,
			'b' => $long_string,
			);

			$mixed_array = array(
			'a' => 'abc',
			'b' => 'def',
			'c' => $long_string,
			);

			$fields = array(
			'ls' => $long_string,
			'la' => $long_array,
			'ma' => $mixed_array,
			);

			$truncated_fields = id(new HeraldObjectTranscript())
			->setFields($fields)
			->getFields();

			$this->assertEqual($short_string, $truncated_fields['ls']);

			$this->assertEqual(
			array('a', '<...>'),
			array_keys($truncated_fields['la']));
			$this->assertEqual(
			$short_string.'!<...>',
			implode('!', $truncated_fields['la']));

			$this->assertEqual(
			array('a', 'b', 'c'),
			array_keys($truncated_fields['ma']));
			$this->assertEqual(
			'abc!def!'.substr($short_string, 6),
			implode('!', $truncated_fields['ma']));

			}
			}