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<?php
use Wikimedia\Rdbms\Database;
use Wikimedia\Rdbms\DBConnRef;
use Wikimedia\Rdbms\FakeResultWrapper;
use Wikimedia\Rdbms\IDatabase;
use Wikimedia\Rdbms\ILoadBalancer;
use Wikimedia\Rdbms\ResultWrapper;
/**
* @covers Wikimedia\Rdbms\DBConnRef
*/
class DBConnRefTest extends PHPUnit\Framework\TestCase {
use PHPUnit4And6Compat;
/**
* @return ILoadBalancer
*/
private function getLoadBalancerMock() {
$lb = $this->getMock( ILoadBalancer::class );
$lb->method( 'getConnection' )->willReturnCallback(
function () {
return $this->getDatabaseMock();
}
);
$lb->method( 'getConnectionRef' )->willReturnCallback(
function () use ( $lb ) {
return $this->getDBConnRef( $lb );
}
);
return $lb;
}
/**
* @return IDatabase
*/
private function getDatabaseMock() {
$db = $this->getMockBuilder( Database::class )
->disableOriginalConstructor()
->getMock();
$db->method( 'select' )->willReturn( new FakeResultWrapper( [] ) );
$db->method( '__toString' )->willReturn( 'MOCK_DB' );
return $db;
}
/**
* @return IDatabase
*/
private function getDBConnRef( ILoadBalancer $lb = null ) {
$lb = $lb ?: $this->getLoadBalancerMock();
return new DBConnRef( $lb, $this->getDatabaseMock() );
}
public function testConstruct() {
$lb = $this->getLoadBalancerMock();
$ref = new DBConnRef( $lb, $this->getDatabaseMock() );
$this->assertInstanceOf( ResultWrapper::class, $ref->select( 'whatever', '*' ) );
}
public function testConstruct_params() {
$lb = $this->getMock( ILoadBalancer::class );
$lb->expects( $this->once() )
->method( 'getConnection' )
->with( DB_MASTER, [ 'test' ], 'dummy', ILoadBalancer::CONN_TRX_AUTOCOMMIT )
->willReturnCallback(
function () {
return $this->getDatabaseMock();
}
);
$ref = new DBConnRef(
$lb,
[ DB_MASTER, [ 'test' ], 'dummy', ILoadBalancer::CONN_TRX_AUTOCOMMIT ]
);
$this->assertInstanceOf( ResultWrapper::class, $ref->select( 'whatever', '*' ) );
}
public function testDestruct() {
$lb = $this->getLoadBalancerMock();
$lb->expects( $this->once() )
->method( 'reuseConnection' );
$this->innerMethodForTestDestruct( $lb );
}
private function innerMethodForTestDestruct( ILoadBalancer $lb ) {
$ref = $lb->getConnectionRef( DB_REPLICA );
$this->assertInstanceOf( ResultWrapper::class, $ref->select( 'whatever', '*' ) );
}
public function testConstruct_failure() {
$this->setExpectedException( InvalidArgumentException::class, '' );
$lb = $this->getLoadBalancerMock();
new DBConnRef( $lb, 17 ); // bad constructor argument
}
public function testGetWikiID() {
$lb = $this->getMock( ILoadBalancer::class );
// getWikiID is optimized to not create a connection
$lb->expects( $this->never() )
->method( 'getConnection' );
$ref = new DBConnRef( $lb, [ DB_REPLICA, [], 'dummy', 0 ] );
$this->assertSame( 'dummy', $ref->getWikiID() );
}
public function testGetDomainID() {
$lb = $this->getMock( ILoadBalancer::class );
// getDomainID is optimized to not create a connection
$lb->expects( $this->never() )
->method( 'getConnection' );
$ref = new DBConnRef( $lb, [ DB_REPLICA, [], 'dummy', 0 ] );
$this->assertSame( 'dummy', $ref->getDomainID() );
}
public function testSelect() {
// select should get passed through normally
$ref = $this->getDBConnRef();
$this->assertInstanceOf( ResultWrapper::class, $ref->select( 'whatever', '*' ) );
}
public function testToString() {
$ref = $this->getDBConnRef();
$this->assertInternalType( 'string', $ref->__toString() );
$lb = $this->getLoadBalancerMock();
$ref = new DBConnRef( $lb, [ DB_MASTER, [], 'test', 0 ] );
$this->assertInternalType( 'string', $ref->__toString() );
}
}
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