public function testGetChildTransactions()
{
$method = 'method';
$transactionModelMock = $this->getMockBuilder('Magento\\Sales\\Model\\Order\\Payment\\Transaction')->disableOriginalConstructor()->setMethods(['getChildTransactions', 'getMethod', '__wakeup'])->getMock();
$childModelMock = $this->getMockBuilder('Magento\\Sales\\Model\\Order\\Payment\\Transaction')->disableOriginalConstructor()->setMethods(['getChildTransactions', 'setMethod', '__wakeup'])->getMock();
$transactionDtoMock = $this->getMockBuilder('Magento\\Sales\\Service\\V1\\Data\\Transaction')->disableOriginalConstructor()->setMethods([])->getMock();
$transactionModelMock->expects($this->once())->method('getChildTransactions')->will($this->returnValue([$childModelMock]));
$transactionModelMock->expects($this->once())->method('getMethod')->will($this->returnValue($method));
$childModelMock->expects($this->once())->method('setMethod')->with($method);
$this->transactionMapperMock->expects($this->once())->method('extractDto')->with($childModelMock, true)->will($this->returnValue($transactionDtoMock));
$this->assertSame([$transactionDtoMock], $this->transactionMapper->getChildTransactions($transactionModelMock));
}
