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AphrontMySQLDatabaseConnectionTestCase.php
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			<?php

			final class AphrontMySQLDatabaseConnectionTestCase
			extends PhabricatorTestCase {

			protected function getPhabricatorTestCaseConfiguration() {
			return array(
			// We disable this here because we're testing live MySQL connections.
			self::PHABRICATOR_TESTCONFIG_ISOLATE_LISK => false,
			);
			}

			public function testConnectionFailures() {
			$conn = id(new HarbormasterScratchTable())->establishConnection('r');

			queryfx($conn, 'SELECT 1');

			// We expect the connection to recover from a 2006 (lost connection) when
			// outside of a transaction...
			$conn->simulateErrorOnNextQuery(2006);
			queryfx($conn, 'SELECT 1');

			// ...but when transactional, we expect the query to throw when the
			// connection is lost, because it indicates the transaction was aborted.
			$conn->openTransaction();
			$conn->simulateErrorOnNextQuery(2006);

			$caught = null;
			try {
			queryfx($conn, 'SELECT 1');
			} catch (AphrontConnectionLostQueryException $ex) {
			$caught = $ex;
			}
			$this->assertTrue($caught instanceof Exception);
			}

			}