PhabricatorDifferentialRevisionTestDataGenerator.php
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	<?php

	final class PhabricatorDifferentialRevisionTestDataGenerator
	extends PhabricatorTestDataGenerator {

	const GENERATORKEY = 'revisions';

	public function getGeneratorName() {
	return pht('Differential Revisions');
	}

	public function generateObject() {
	$author = $this->loadPhabricatorUser();

	$revision = DifferentialRevision::initializeNewRevision($author);
	$revision->attachReviewers(array());
	$revision->attachActiveDiff(null);

	// This could be a bit richer and more formal than it is.
	$revision->setTitle($this->generateTitle());
	$revision->setSummary($this->generateDescription());
	$revision->setTestPlan($this->generateDescription());

	$diff = $this->generateDiff($author);
	$type_update = DifferentialRevisionUpdateTransaction::TRANSACTIONTYPE;

	$xactions = array();

	$xactions[] = id(new DifferentialTransaction())
	->setTransactionType($type_update)
	->setNewValue($diff->getPHID());

	id(new DifferentialTransactionEditor())
	->setActor($author)
	->setContentSource($this->getLipsumContentSource())
	->applyTransactions($revision, $xactions);

	return $revision;
	}

	public function getCCPHIDs() {
	$ccs = array();
	for ($i = 0; $i < rand(1, 4);$i++) {
	$ccs[] = $this->loadPhabricatorUserPHID();
	}
	return $ccs;
	}

	public function generateDiff($author) {
	$paste_generator = new PhabricatorPasteTestDataGenerator();
	$languages = $paste_generator->getSupportedLanguages();
	$language = array_rand($languages);
	$spec = $languages[$language];

	$code = $paste_generator->generateContent($spec);
	$altcode = $paste_generator->generateContent($spec);
	$newcode = $this->randomlyModify($code, $altcode);
	$diff = id(new PhabricatorDifferenceEngine())
	->generateRawDiffFromFileContent($code, $newcode);
	$call = new ConduitCall(
	'differential.createrawdiff',
	array(
	'diff' => $diff,
	));
	$call->setUser($author);
	$result = $call->execute();
	$thediff = id(new DifferentialDiff())->load(
	$result['id']);
	$thediff->setDescription($this->generateTitle())->save();
	return $thediff;
	}

	public function generateDescription() {
	return id(new PhutilLipsumContextFreeGrammar())
	->generate(10, 20);
	}

	public function generateTitle() {
	return id(new PhutilLipsumContextFreeGrammar())
	->generate();
	}

	public function randomlyModify($code, $altcode) {
	$codearr = explode("\n", $code);
	$altcodearr = explode("\n", $altcode);
	$no_lines_to_delete = rand(1,
	min(count($codearr) - 2, 5));
	$randomlines = array_rand($codearr,
	count($codearr) - $no_lines_to_delete);
	$newcode = array();
	foreach ($randomlines as $lineno) {
	$newcode[] = $codearr[$lineno];
	}
	$newlines_count = rand(2,
	min(count($codearr) - 2, count($altcodearr) - 2, 5));
	$randomlines_orig = array_rand($codearr, $newlines_count);
	$randomlines_new = array_rand($altcodearr, $newlines_count);
	$newcode2 = array();
	$c = 0;
	for ($i = 0; $i < count($newcode);$i++) {
	$newcode2[] = $newcode[$i];
	if (in_array($i, $randomlines_orig)) {
	$newcode2[] = $altcodearr[$randomlines_new[$c++]];
	}
	}
	return implode("\n", $newcode2);
	}

	}

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