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PhabricatorMetronomeTestCase.php
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			<?php

			final class PhabricatorMetronomeTestCase
			extends PhabricatorTestCase {

			public function testMetronomeOffsets() {
			$cases = array(
			'web001.example.net' => 44,
			'web002.example.net' => 36,
			'web003.example.net' => 25,
			'web004.example.net' => 25,
			'web005.example.net' => 16,
			'web006.example.net' => 26,
			'web007.example.net' => 35,
			'web008.example.net' => 14,
			);

			$metronome = id(new PhabricatorMetronome())
			->setFrequency(60);

			foreach ($cases as $input => $expect) {
			$metronome->setOffsetFromSeed($input);

			$this->assertEqual(
			$expect,
			$metronome->getOffset(),
			pht('Offset for: %s', $input));
			}
			}

			public function testMetronomeTicks() {
			$metronome = id(new PhabricatorMetronome())
			->setFrequency(60)
			->setOffset(13);

			$tick_epoch = strtotime('2000-01-01 11:11:13 AM UTC');

			// Since the epoch is at "0:13" on the clock, the metronome should tick
			// then.
			$this->assertEqual(
			$tick_epoch,
			$metronome->getNextTickAfter($tick_epoch - 1),
			pht('Tick at 11:11:13 AM.'));

			// The next tick should be a minute later.
			$this->assertEqual(
			$tick_epoch + 60,
			$metronome->getNextTickAfter($tick_epoch),
			pht('Tick at 11:12:13 AM.'));


			// There's no tick in the next 59 seconds.
			$this->assertFalse(
			$metronome->didTickBetween($tick_epoch, $tick_epoch + 59));

			$this->assertTrue(
			$metronome->didTickBetween($tick_epoch, $tick_epoch + 60));
			}


			}