PhutilHashingIteratorTestCase.php
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	<?php

	final class PhutilHashingIteratorTestCase extends PhutilTestCase {

	public function testHashingIterator() {
	$path = dirname(__FILE__).'/hashingiterator/mostlyprime.txt';

	$stream = fopen($path, 'rb');
	$algorithm = 'sha256';

	$stream_iterator = new PhutilStreamIterator($stream);
	$hashing_iterator = id(new PhutilHashingIterator($stream_iterator))
	->setAlgorithm($algorithm);

	$rope = new PhutilRope();
	foreach ($hashing_iterator as $block) {
	$rope->append($block);
	}

	$expect_data = Filesystem::readFile($path);
	$actual_data = $rope->getAsString();

	$this->assertEqual(
	$expect_data,
	$actual_data,
	pht('Data should be read correctly.'));

	$expect_hash =
	'd50af03db6c8b63084664f352d12bffb8f58022bdd67e3aba21f01e11c3b8939';

	$single_hash = hash($algorithm, $expect_data, $raw_output = false);
	$actual_hash = $hashing_iterator->getHash();

	$this->assertEqual(
	$expect_hash,
	$single_hash,
	pht('Expected hash should match freshly computed hash.'));

	$this->assertEqual(
	$expect_hash,
	$actual_hash,
	pht('Expected hash should also match iterator actual hash.'));
	}

	}