better-testing

ConduitUserParameterType.php
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			<?php

			final class ConduitUserParameterType
			extends ConduitParameterType {

			protected function getParameterValue(array $request, $key, $strict) {
			$value = parent::getParameterValue($request, $key, $strict);

			if ($value === null) {
			return null;
			}

			if (!is_string($value)) {
			$this->raiseValidationException(
			$request,
			$key,
			pht('Expected PHID or null, got something else.'));
			}

			$user_phids = id(new PhabricatorUserPHIDResolver())
			->setViewer($this->getViewer())
			->resolvePHIDs(array($value));

			return nonempty(head($user_phids), null);
			}

			protected function getParameterTypeName() {
			return 'phid\|string\|null';
			}

			protected function getParameterFormatDescriptions() {
			return array(
			pht('User PHID.'),
			pht('Username.'),
			pht('Literal null.'),
			);
			}

			protected function getParameterExamples() {
			return array(
			'"PHID-USER-1111"',
			'"alincoln"',
			'null',
			);
			}

			}