Doctrine\Tests\DBAL\ConnectionTest

Complexity

Total Complexity

41

Size/Duplication

Total Lines	837
Duplicated Lines	0 %

Importance

Changes	2
Bugs	0	Features	0

41 Methods

Rating	Name	Duplication	Size	Complexity
A	testIsAutoCommit()	0	3	1
A	testSwitchingAutoCommitModeCommitsAllCurrentTransactions()	0	22	1
A	testUpdateWithDifferentColumnsInDataAndIdentifiers()	0	37	1
A	testFetchColumn()	0	35	1
A	testRollBackStartsTransactionInNoAutoCommitMode()	0	15	1
A	testFetchArray()	0	34	1
A	testDeleteWithIsNull()	0	21	1
A	testFetchAssoc()	0	34	1
A	testFetchAll()	0	33	1
A	testUpdateWithIsNull()	0	35	1
A	testUpdateWithSameColumnInDataAndIdentifiers()	0	36	1
A	testEmptyInsert()	0	9	1
A	testNoTransactionActiveByDefault()	0	3	1
A	testCommitWithNoActiveTransactionThrowsException()	0	4	1
A	getExecuteUpdateMockConnection()	0	16	1
A	testSetRollbackOnlyNoActiveTransactionThrowsException()	0	4	1
A	testIsConnected()	0	3	1
A	testRollbackWithNoActiveTransactionThrowsException()	0	4	1
A	testIsRollbackOnlyNoActiveTransactionThrowsException()	0	4	1
A	setUp()	0	3	1
A	testGetConfiguration()	0	5	1
A	testEventManagerPassedToPlatform()	0	18	1
A	testDebugSQLStack()	0	5	1
A	testConnectStartsTransactionInNoAutoCommitMode()	0	17	1
A	getQueryMethods()	0	8	1
A	testEchoSQLLogger()	0	5	1
A	testConnectDispatchEvent()	0	16	1
A	testDriverExceptionIsWrapped()	0	11	1
A	testGetEventManager()	0	3	1
A	testGetDriver()	0	3	1
A	testSetAutoCommit()	0	4	1
A	testCommitStartsTransactionInNoAutoCommitMode()	0	15	1
A	testShouldNotPassPlatformInParamsToTheQueryCacheProfileInExecuteCacheQuery()	0	34	1
A	testExecuteCacheQueryStripsPlatformFromConnectionParamsBeforeGeneratingCacheKeys()	0	46	1
A	testCallingDeleteWithNoDeletionCriteriaResultsInInvalidArgumentException()	0	8	1
A	resultProvider()	0	3	1
A	testConnectionParamsArePassedToTheQueryCacheProfileInExecuteCacheQuery()	0	35	1
A	testPlatformDetectionIsTriggerOnlyOnceOnRetrievingPlatform()	0	31	1
A	testCallConnectOnce()	0	12	1
A	testThrowsExceptionWhenInValidPlatformSpecified()	0	11	1
A	testRethrowsOriginalExceptionOnDeterminingPlatformWhenConnectingToNonExistentDatabase()	0	20	1

<?php

declare(strict_types=1);

namespace Doctrine\Tests\DBAL;

use Doctrine\Common\Cache\Cache;
use Doctrine\Common\EventManager;
use Doctrine\DBAL\Cache\ArrayStatement;
use Doctrine\DBAL\Cache\QueryCacheProfile;
use Doctrine\DBAL\Configuration;
use Doctrine\DBAL\Connection;
use Doctrine\DBAL\ConnectionException;
use Doctrine\DBAL\DBALException;
use Doctrine\DBAL\Driver;
use Doctrine\DBAL\Driver\Connection as DriverConnection;
use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
use Doctrine\DBAL\Driver\Statement;
use Doctrine\DBAL\DriverManager;
use Doctrine\DBAL\Events;
use Doctrine\DBAL\Exception\InvalidArgumentException;
use Doctrine\DBAL\FetchMode;
use Doctrine\DBAL\Logging\DebugStack;
use Doctrine\DBAL\Logging\EchoSQLLogger;
use Doctrine\DBAL\ParameterType;
use Doctrine\DBAL\Platforms\AbstractPlatform;
use Doctrine\DBAL\VersionAwarePlatformDriver;
use Doctrine\Tests\DbalTestCase;
use Exception;
use PHPUnit\Framework\MockObject\MockObject;
use stdClass;

/**
 * @requires extension pdo_mysql
 */
class ConnectionTest extends DbalTestCase
{
    /** @var Connection */
    private $connection;

    /** @var array<string, mixed> */
    protected $params = [
        'driver' => 'pdo_mysql',
        'host' => 'localhost',
        'user' => 'root',
        'password' => 'password',
        'port' => 1234,
    ];

    protected function setUp() : void
    {
        $this->connection = DriverManager::getConnection($this->params);
    }

    /**
     * @return Connection|MockObject
     */
    private function getExecuteUpdateMockConnection()
    {
        $driverMock = $this->createMock(Driver::class);

        $driverMock->expects($this->any())
            ->method('connect')
            ->will($this->returnValue(
                $this->createMock(DriverConnection::class)
            ));

        $platform = $this->getMockForAbstractClass(AbstractPlatform::class);

        return $this->getMockBuilder(Connection::class)
            ->onlyMethods(['executeUpdate'])
            ->setConstructorArgs([['platform' => $platform], $driverMock])
            ->getMock();
    }

    public function testIsConnected() : void
    {
        self::assertFalse($this->connection->isConnected());
    }

    public function testNoTransactionActiveByDefault() : void
    {
        self::assertFalse($this->connection->isTransactionActive());
    }

    public function testCommitWithNoActiveTransactionThrowsException() : void
    {
        $this->expectException(ConnectionException::class);
        $this->connection->commit();
    }

    public function testRollbackWithNoActiveTransactionThrowsException() : void
    {
        $this->expectException(ConnectionException::class);
        $this->connection->rollBack();
    }

    public function testSetRollbackOnlyNoActiveTransactionThrowsException() : void
    {
        $this->expectException(ConnectionException::class);
        $this->connection->setRollbackOnly();
    }

    public function testIsRollbackOnlyNoActiveTransactionThrowsException() : void
    {
        $this->expectException(ConnectionException::class);
        $this->connection->isRollbackOnly();
    }

    public function testGetConfiguration() : void
    {
        $config = $this->connection->getConfiguration();

        self::assertInstanceOf(Configuration::class, $config);
    }

    public function testGetDriver() : void
    {
        self::assertInstanceOf(\Doctrine\DBAL\Driver\PDOMySql\Driver::class, $this->connection->getDriver());
    }

    public function testGetEventManager() : void
    {
        self::assertInstanceOf(EventManager::class, $this->connection->getEventManager());
    }

    public function testConnectDispatchEvent() : void
    {
        $listenerMock = $this->getMockBuilder($this->getMockClass('ConnectDispatchEventListener'))
            ->addMethods(['postConnect'])
            ->getMock();
        $listenerMock->expects($this->once())->method('postConnect');

        $eventManager = new EventManager();
        $eventManager->addEventListener([Events::postConnect], $listenerMock);

        $driverMock = $this->createMock(Driver::class);
        $driverMock->expects($this->at(0))
                   ->method('connect');

        $conn = new Connection([], $driverMock, new Configuration(), $eventManager);
        $conn->connect();
    }

    public function testEventManagerPassedToPlatform() : void
    {
        $eventManager = new EventManager();

        /** @var AbstractPlatform|MockObject $driver */
        $platform = $this->createMock(AbstractPlatform::class);
        $platform->expects($this->once())
            ->method('setEventManager')
            ->with($eventManager);

        /** @var Driver|MockObject $driver */
        $driver = $this->createMock(Driver::class);
        $driver->expects($this->any())
            ->method('getDatabasePlatform')
            ->willReturn($platform);

        $connection = new Connection($this->params, $driver, null, $eventManager);
        $connection->getDatabasePlatform();
    }

    /**
     * @requires extension pdo_sqlite
     * @dataProvider getQueryMethods
     */
    public function testDriverExceptionIsWrapped(string $method) : void
    {
        $this->expectException(DBALException::class);
        $this->expectExceptionMessage("An exception occurred while executing \"MUUHAAAAHAAAA\":\n\nSQLSTATE[HY000]: General error: 1 near \"MUUHAAAAHAAAA\"");

        $connection = DriverManager::getConnection([
            'driver' => 'pdo_sqlite',
            'memory' => true,
        ]);

        $connection->$method('MUUHAAAAHAAAA');
    }

    /**
     * @return array<int, array<int, mixed>>
     */
    public static function getQueryMethods() : iterable
    {
        return [
            ['exec'],
            ['query'],
            ['executeQuery'],
            ['executeUpdate'],
            ['prepare'],
        ];
    }

    /**
     * Pretty dumb test, however we want to check that the EchoSQLLogger correctly implements the interface.
     *
     * @group DBAL-11
     */
    public function testEchoSQLLogger() : void
    {
        $logger = new EchoSQLLogger();
        $this->connection->getConfiguration()->setSQLLogger($logger);
        self::assertSame($logger, $this->connection->getConfiguration()->getSQLLogger());
    }

    /**
     * Pretty dumb test, however we want to check that the DebugStack correctly implements the interface.
     *
     * @group DBAL-11
     */
    public function testDebugSQLStack() : void
    {
        $logger = new DebugStack();
        $this->connection->getConfiguration()->setSQLLogger($logger);
        self::assertSame($logger, $this->connection->getConfiguration()->getSQLLogger());
    }

    /**
     * @group DBAL-81
     */
    public function testIsAutoCommit() : void
    {
        self::assertTrue($this->connection->isAutoCommit());
    }

    /**
     * @group DBAL-81
     */
    public function testSetAutoCommit() : void
    {
        $this->connection->setAutoCommit(false);
        self::assertFalse($this->connection->isAutoCommit());
    }

    /**
     * @group DBAL-81
     */
    public function testConnectStartsTransactionInNoAutoCommitMode() : void
    {
        $driverMock = $this->createMock(Driver::class);
        $driverMock->expects($this->any())
            ->method('connect')
            ->will($this->returnValue(
                $this->createMock(DriverConnection::class)
            ));
        $conn = new Connection([], $driverMock);

        $conn->setAutoCommit(false);

        self::assertFalse($conn->isTransactionActive());

        $conn->connect();

        self::assertTrue($conn->isTransactionActive());
    }

    /**
     * @group DBAL-81
     */
    public function testCommitStartsTransactionInNoAutoCommitMode() : void
    {
        $driverMock = $this->createMock(Driver::class);
        $driverMock->expects($this->any())
            ->method('connect')
            ->will($this->returnValue(
                $this->createMock(DriverConnection::class)
            ));
        $conn = new Connection([], $driverMock);

        $conn->setAutoCommit(false);
        $conn->connect();
        $conn->commit();

        self::assertTrue($conn->isTransactionActive());
    }

    /**
     * @return bool[][]
     */
    public function resultProvider() : array
    {
        return [[true], [false]];
    }

    /**
     * @group DBAL-81
     */
    public function testRollBackStartsTransactionInNoAutoCommitMode() : void
    {
        $driverMock = $this->createMock(Driver::class);
        $driverMock->expects($this->any())
            ->method('connect')
            ->will($this->returnValue(
                $this->createMock(DriverConnection::class)
            ));
        $conn = new Connection([], $driverMock);

        $conn->setAutoCommit(false);
        $conn->connect();
        $conn->rollBack();

        self::assertTrue($conn->isTransactionActive());
    }

    /**
     * @group DBAL-81
     */
    public function testSwitchingAutoCommitModeCommitsAllCurrentTransactions() : void
    {
        $driverMock = $this->createMock(Driver::class);
        $driverMock->expects($this->any())
            ->method('connect')
            ->will($this->returnValue(
                $this->createMock(DriverConnection::class)
            ));
        $conn = new Connection([], $driverMock);

        $conn->connect();
        $conn->beginTransaction();
        $conn->beginTransaction();
        $conn->setAutoCommit(false);

        self::assertSame(1, $conn->getTransactionNestingLevel());

        $conn->beginTransaction();
        $conn->beginTransaction();
        $conn->setAutoCommit(true);

        self::assertFalse($conn->isTransactionActive());
    }

    public function testEmptyInsert() : void
    {
        $conn = $this->getExecuteUpdateMockConnection();

        $conn->expects($this->once())
            ->method('executeUpdate')
            ->with('INSERT INTO footable () VALUES ()');

        $conn->insert('footable', []);
    }

    /**
     * @group DBAL-2511
     */
    public function testUpdateWithDifferentColumnsInDataAndIdentifiers() : void
    {
        $conn = $this->getExecuteUpdateMockConnection();

        $conn->expects($this->once())
            ->method('executeUpdate')
            ->with(
                'UPDATE TestTable SET text = ?, is_edited = ? WHERE id = ? AND name = ?',
                [
                    'some text',
                    true,
                    1,
                    'foo',
                ],
                [
                    'string',
                    'boolean',
                    'integer',
                    'string',
                ]
            );

        $conn->update(
            'TestTable',
            [
                'text' => 'some text',
                'is_edited' => true,
            ],
            [
                'id' => 1,
                'name' => 'foo',
            ],
            [
                'text' => 'string',
                'is_edited' => 'boolean',
                'id' => 'integer',
                'name' => 'string',
            ]
        );
    }

    /**
     * @group DBAL-2511
     */
    public function testUpdateWithSameColumnInDataAndIdentifiers() : void
    {
        $conn = $this->getExecuteUpdateMockConnection();

        $conn->expects($this->once())
            ->method('executeUpdate')
            ->with(
                'UPDATE TestTable SET text = ?, is_edited = ? WHERE id = ? AND is_edited = ?',
                [
                    'some text',
                    true,
                    1,
                    false,
                ],
                [
                    'string',
                    'boolean',
                    'integer',
                    'boolean',
                ]
            );

        $conn->update(
            'TestTable',
            [
                'text' => 'some text',
                'is_edited' => true,
            ],
            [
                'id' => 1,
                'is_edited' => false,
            ],
            [
                'text' => 'string',
                'is_edited' => 'boolean',
                'id' => 'integer',
            ]
        );
    }

    /**
     * @group DBAL-2688
     */
    public function testUpdateWithIsNull() : void
    {
        $conn = $this->getExecuteUpdateMockConnection();

        $conn->expects($this->once())
            ->method('executeUpdate')
            ->with(
                'UPDATE TestTable SET text = ?, is_edited = ? WHERE id IS NULL AND name = ?',
                [
                    'some text',
                    null,
                    'foo',
                ],
                [
                    'string',
                    'boolean',
                    'string',
                ]
            );

        $conn->update(
            'TestTable',
            [
                'text' => 'some text',
                'is_edited' => null,
            ],
            [
                'id' => null,
                'name' => 'foo',
            ],
            [
                'text' => 'string',
                'is_edited' => 'boolean',
                'id' => 'integer',
                'name' => 'string',
            ]
        );
    }

    /**
     * @group DBAL-2688
     */
    public function testDeleteWithIsNull() : void
    {
        $conn = $this->getExecuteUpdateMockConnection();

        $conn->expects($this->once())
            ->method('executeUpdate')
            ->with(
                'DELETE FROM TestTable WHERE id IS NULL AND name = ?',
                ['foo'],
                ['string']
            );

        $conn->delete(
            'TestTable',
            [
                'id' => null,
                'name' => 'foo',
            ],
            [
                'id' => 'integer',
                'name' => 'string',
            ]
        );
    }

    public function testFetchAssoc() : void
    {
        $statement = 'SELECT * FROM foo WHERE bar = ?';
        $params    = [666];
        $types     = [ParameterType::INTEGER];
        $result    = [];

        $driverMock = $this->createMock(Driver::class);

        $driverMock->expects($this->any())
            ->method('connect')
            ->will($this->returnValue(
                $this->createMock(DriverConnection::class)
            ));

        $driverStatementMock = $this->createMock(Statement::class);

        $driverStatementMock->expects($this->once())
            ->method('fetch')
            ->with(FetchMode::ASSOCIATIVE)
            ->will($this->returnValue($result));

        /** @var Connection|MockObject $conn */
        $conn = $this->getMockBuilder(Connection::class)
            ->onlyMethods(['executeQuery'])
            ->setConstructorArgs([[], $driverMock])
            ->getMock();

        $conn->expects($this->once())
            ->method('executeQuery')
            ->with($statement, $params, $types)
            ->will($this->returnValue($driverStatementMock));

        self::assertSame($result, $conn->fetchAssoc($statement, $params, $types));
    }

    public function testFetchArray() : void
    {
        $statement = 'SELECT * FROM foo WHERE bar = ?';
        $params    = [666];
        $types     = [ParameterType::INTEGER];
        $result    = [];

        $driverMock = $this->createMock(Driver::class);

        $driverMock->expects($this->any())
            ->method('connect')
            ->will($this->returnValue(
                $this->createMock(DriverConnection::class)
            ));

        $driverStatementMock = $this->createMock(Statement::class);

        $driverStatementMock->expects($this->once())
            ->method('fetch')
            ->with(FetchMode::NUMERIC)
            ->will($this->returnValue($result));

        /** @var Connection|MockObject $conn */
        $conn = $this->getMockBuilder(Connection::class)
            ->onlyMethods(['executeQuery'])
            ->setConstructorArgs([[], $driverMock])
            ->getMock();

        $conn->expects($this->once())
            ->method('executeQuery')
            ->with($statement, $params, $types)
            ->will($this->returnValue($driverStatementMock));

        self::assertSame($result, $conn->fetchArray($statement, $params, $types));
    }

    public function testFetchColumn() : void
    {
        $statement = 'SELECT * FROM foo WHERE bar = ?';
        $params    = [666];
        $types     = [ParameterType::INTEGER];
        $column    = 0;
        $result    = [];

        $driverMock = $this->createMock(Driver::class);

        $driverMock->expects($this->any())
            ->method('connect')
            ->will($this->returnValue(
                $this->createMock(DriverConnection::class)
            ));

        $driverStatementMock = $this->createMock(Statement::class);

        $driverStatementMock->expects($this->once())
            ->method('fetchColumn')
            ->with($column)
            ->will($this->returnValue($result));

        /** @var Connection|MockObject $conn */
        $conn = $this->getMockBuilder(Connection::class)
            ->onlyMethods(['executeQuery'])
            ->setConstructorArgs([[], $driverMock])
            ->getMock();

        $conn->expects($this->once())
            ->method('executeQuery')
            ->with($statement, $params, $types)
            ->will($this->returnValue($driverStatementMock));

        self::assertSame($result, $conn->fetchColumn($statement, $params, $column, $types));
    }

    public function testFetchAll() : void
    {
        $statement = 'SELECT * FROM foo WHERE bar = ?';
        $params    = [666];
        $types     = [ParameterType::INTEGER];
        $result    = [];

        $driverMock = $this->createMock(Driver::class);

        $driverMock->expects($this->any())
            ->method('connect')
            ->will($this->returnValue(
                $this->createMock(DriverConnection::class)
            ));

        $driverStatementMock = $this->createMock(Statement::class);

        $driverStatementMock->expects($this->once())
            ->method('fetchAll')
            ->will($this->returnValue($result));

        /** @var Connection|MockObject $conn */
        $conn = $this->getMockBuilder(Connection::class)
            ->onlyMethods(['executeQuery'])
            ->setConstructorArgs([[], $driverMock])
            ->getMock();

        $conn->expects($this->once())
            ->method('executeQuery')
            ->with($statement, $params, $types)
            ->will($this->returnValue($driverStatementMock));

        self::assertSame($result, $conn->fetchAll($statement, $params, $types));
    }

    public function testCallingDeleteWithNoDeletionCriteriaResultsInInvalidArgumentException() : void
    {
        /** @var Driver $driver */
        $driver = $this->createMock(Driver::class);
        $conn   = new Connection([], $driver);

        $this->expectException(InvalidArgumentException::class);
        $conn->delete('kittens', []);
    }

    public function testCallConnectOnce() : void
    {
        /** @var Driver|MockObject $driver */
        $driver = $this->createMock(Driver::class);
        $driver->expects($this->once())
            ->method('connect');

        $platform = $this->createMock(AbstractPlatform::class);

        $conn = new Connection(['platform' => $platform], $driver);
        $conn->connect();
        $conn->connect();
    }

    /**
     * @group DBAL-1127
     */
    public function testPlatformDetectionIsTriggerOnlyOnceOnRetrievingPlatform() : void
    {
        /** @var Driver|VersionAwarePlatformDriver|MockObject $driverMock */
        $driverMock = $this->createMock([Driver::class, VersionAwarePlatformDriver::class]);

        /** @var DriverConnection|ServerInfoAwareConnection|MockObject $driverConnectionMock */
        $driverConnectionMock = $this->createMock([DriverConnection::class, ServerInfoAwareConnection::class]);

        /** @var AbstractPlatform|MockObject $platformMock */
        $platformMock = $this->getMockForAbstractClass(AbstractPlatform::class);

        $connection = new Connection([], $driverMock);

        $driverMock->expects($this->once())
            ->method('connect')
            ->will($this->returnValue($driverConnectionMock));

        $driverConnectionMock->expects($this->once())
            ->method('requiresQueryForServerVersion')
            ->will($this->returnValue(false));

        $driverConnectionMock->expects($this->once())
            ->method('getServerVersion')
            ->will($this->returnValue('6.6.6'));

        $driverMock->expects($this->once())
            ->method('createDatabasePlatformForVersion')
            ->with('6.6.6')
            ->will($this->returnValue($platformMock));

        self::assertSame($platformMock, $connection->getDatabasePlatform());
    }

    public function testConnectionParamsArePassedToTheQueryCacheProfileInExecuteCacheQuery() : void
    {
        $resultCacheDriverMock = $this->createMock(Cache::class);

        $resultCacheDriverMock
            ->expects($this->atLeastOnce())
            ->method('fetch')
            ->with('cacheKey')
            ->will($this->returnValue(['realKey' => []]));

        $query  = 'SELECT * FROM foo WHERE bar = ?';
        $params = [666];
        $types  = [ParameterType::INTEGER];

        /** @var QueryCacheProfile|MockObject $queryCacheProfileMock */
        $queryCacheProfileMock = $this->createMock(QueryCacheProfile::class);

        $queryCacheProfileMock
            ->expects($this->any())
            ->method('getResultCacheDriver')
            ->will($this->returnValue($resultCacheDriverMock));

        // This is our main expectation
        $queryCacheProfileMock
            ->expects($this->once())
            ->method('generateCacheKeys')
            ->with($query, $params, $types, $this->params)
            ->will($this->returnValue(['cacheKey', 'realKey']));

        /** @var Driver $driver */
        $driver = $this->createMock(Driver::class);

        self::assertInstanceOf(
            ArrayStatement::class,
            (new Connection($this->params, $driver))->executeCacheQuery($query, $params, $types, $queryCacheProfileMock)
        );
    }

    /**
     * @group #2821
     */
    public function testShouldNotPassPlatformInParamsToTheQueryCacheProfileInExecuteCacheQuery() : void
    {
        $resultCacheDriverMock = $this->createMock(Cache::class);

        $resultCacheDriverMock
            ->expects($this->atLeastOnce())
            ->method('fetch')
            ->with('cacheKey')
            ->will($this->returnValue(['realKey' => []]));

        /** @var QueryCacheProfile|MockObject $queryCacheProfileMock */
        $queryCacheProfileMock = $this->createMock(QueryCacheProfile::class);

        $queryCacheProfileMock
            ->expects($this->any())
            ->method('getResultCacheDriver')
            ->will($this->returnValue($resultCacheDriverMock));

        $query = 'SELECT 1';

        $connectionParams = $this->params;

        $queryCacheProfileMock
            ->expects($this->once())
            ->method('generateCacheKeys')
            ->with($query, [], [], $connectionParams)
            ->will($this->returnValue(['cacheKey', 'realKey']));

        $connectionParams['platform'] = $this->createMock(AbstractPlatform::class);

        /** @var Driver $driver */
        $driver = $this->createMock(Driver::class);

        (new Connection($connectionParams, $driver))->executeCacheQuery($query, [], [], $queryCacheProfileMock);
    }

    /**
     * @group #2821
     */
    public function testThrowsExceptionWhenInValidPlatformSpecified() : void
    {
        $connectionParams             = $this->params;
        $connectionParams['platform'] = new stdClass();

        /** @var Driver $driver */
        $driver = $this->createMock(Driver::class);

        $this->expectException(DBALException::class);

        new Connection($connectionParams, $driver);
    }

    /**
     * @group DBAL-990
     */
    public function testRethrowsOriginalExceptionOnDeterminingPlatformWhenConnectingToNonExistentDatabase() : void
    {
        /** @var Driver|VersionAwarePlatformDriver|MockObject $driverMock */
        $driverMock = $this->createMock([Driver::class, VersionAwarePlatformDriver::class]);

        $connection        = new Connection(['dbname' => 'foo'], $driverMock);
        $originalException = new Exception('Original exception');
        $fallbackException = new Exception('Fallback exception');

        $driverMock->expects($this->at(0))
            ->method('connect')
            ->willThrowException($originalException);

        $driverMock->expects($this->at(1))
            ->method('connect')
            ->willThrowException($fallbackException);

        $this->expectExceptionMessage($originalException->getMessage());

        $connection->getDatabasePlatform();
    }

    /**
     * @group #3194
     */
    public function testExecuteCacheQueryStripsPlatformFromConnectionParamsBeforeGeneratingCacheKeys() : void
    {
        /** @var Driver|MockObject $driver */
        $driver = $this->createMock(Driver::class);

        /** @var AbstractPlatform|MockObject $platform */
        $platform = $this->createMock(AbstractPlatform::class);

        /** @var QueryCacheProfile|MockObject $queryCacheProfile */
        $queryCacheProfile = $this->createMock(QueryCacheProfile::class);

        /** @var Cache|MockObject $resultCacheDriver */
        $resultCacheDriver = $this->createMock(Cache::class);

        $queryCacheProfile
            ->expects($this->any())
            ->method('getResultCacheDriver')
            ->will($this->returnValue($resultCacheDriver));

        $resultCacheDriver
            ->expects($this->atLeastOnce())
            ->method('fetch')
            ->with('cacheKey')
            ->will($this->returnValue(['realKey' => []]));

        $query = 'SELECT 1';

        $params = [
            'dbname' => 'foo',
            'platform' => $platform,
        ];

        $paramsWithoutPlatform = $params;
        unset($paramsWithoutPlatform['platform']);

        $queryCacheProfile
            ->expects($this->once())
            ->method('generateCacheKeys')
            ->with($query, [], [], $paramsWithoutPlatform)
            ->will($this->returnValue(['cacheKey', 'realKey']));

        $connection = new Connection($params, $driver);

        self::assertSame($params, $connection->getParams());

        $connection->executeCacheQuery($query, [], [], $queryCacheProfile);
    }
}