testing

PhabricatorConfigManagementDeleteWorkflow.php
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			<?php

			final class PhabricatorConfigManagementDeleteWorkflow
			extends PhabricatorConfigManagementWorkflow {

			protected function didConstruct() {
			$this
			->setName('delete')
			->setExamples('delete __key__')
			->setSynopsis('Delete a local configuration value.')
			->setArguments(
			array(
			array(
			'name' => 'args',
			'wildcard' => true,
			),
			));
			}

			public function execute(PhutilArgumentParser $args) {
			$console = PhutilConsole::getConsole();

			$argv = $args->getArg('args');
			if (count($argv) == 0) {
			throw new PhutilArgumentUsageException(
			"Specify a configuration key to delete.");
			}

			$key = $argv[0];

			if (count($argv) > 1) {
			throw new PhutilArgumentUsageException(
			"Too many arguments: expected one key.");
			}

			$options = PhabricatorApplicationConfigOptions::loadAllOptions();
			if (empty($options[$key])) {
			throw new PhutilArgumentUsageException(
			"No such configuration key '{$key}'! Use `config list` to list all ".
			"keys.");
			}

			$config = new PhabricatorConfigLocalSource();
			$values = $config->getKeys(array($key));
			if (!$values) {
			throw new PhutilArgumentUsageException(
			"Configuration key '{$key}' is not set in local configuration!");
			}

			$config->deleteKeys(array($key));

			$console->writeOut(
			pht("Deleted '%s' from local configuration.", $key)."\n");
			}

			}