public function testAddChild()
{
$productLink = $this->getMock('Magento\\Bundle\\Service\\V1\\Data\\Product\\Link', array(), array(), '', false);
$productLink->expects($this->any())->method('getSku')->will($this->returnValue('linked_product_sku'));
$productLink->expects($this->any())->method('getOptionId')->will($this->returnValue(1));
$productMock = $this->getMock('\\Magento\\Catalog\\Model\\Product', array(), array(), '', false);
$productMock->expects($this->once())->method('getTypeId')->will($this->returnValue(\Magento\Catalog\Model\Product\Type::TYPE_BUNDLE));
$productMock->expects($this->any())->method('getId')->will($this->returnValue('product_id'));
$linkedProductMock = $this->getMock('\\Magento\\Catalog\\Model\\Product', array(), array(), '', false);
$linkedProductMock->expects($this->any())->method('getId')->will($this->returnValue(13));
$linkedProductMock->expects($this->once())->method('isComposite')->will($this->returnValue(false));
$this->productRepositoryMock->expects($this->at(0))->method('get')->with('product_sku')->will($this->returnValue($productMock));
$this->productRepositoryMock->expects($this->at(1))->method('get')->with('linked_product_sku')->will($this->returnValue($linkedProductMock));
$store = $this->getMock('\\Magento\\Store\\Model\\Store', array(), array(), '', false);
$this->storeManagerMock->expects($this->any())->method('getStore')->will($this->returnValue($store));
$store->expects($this->any())->method('getId')->will($this->returnValue(0));
$option = $this->getMockBuilder('\\Magento\\Bundle\\Model\\Option')->disableOriginalConstructor()->setMethods(['getOptionId', '__wakeup'])->getMock();
$option->expects($this->once())->method('getOptionId')->will($this->returnValue(1));
$optionsCollectionMock = $this->getMock('\\Magento\\Bundle\\Model\\Resource\\Option\\Collection', array(), array(), '', false);
$optionsCollectionMock->expects($this->once())->method('setProductIdFilter')->with($this->equalTo('product_id'))->will($this->returnSelf());
$optionsCollectionMock->expects($this->once())->method('joinValues')->with($this->equalTo(0))->will($this->returnSelf());
$optionsCollectionMock->expects($this->any())->method('getIterator')->will($this->returnValue(new \ArrayIterator([$option])));
$this->optionCollectionFactoryMock->expects($this->any())->method('create')->will($this->returnValue($optionsCollectionMock));
$selections = [['option_id' => 1, 'product_id' => 11], ['option_id' => 1, 'product_id' => 12]];
$bundle = $this->getMock('\\Magento\\Bundle\\Model\\Resource\\Bundle', array(), array(), '', false);
$bundle->expects($this->once())->method('getSelectionsData')->with('product_id')->will($this->returnValue($selections));
$this->bundleFactoryMock->expects($this->once())->method('create')->will($this->returnValue($bundle));
$selection = $this->getMock('\\Magento\\Framework\\Object', array('save', 'getId'), array(), '', false);
$selection->expects($this->once())->method('save');
$selection->expects($this->once())->method('getId')->will($this->returnValue(42));
$this->bundleSelectionMock->expects($this->once())->method('create')->will($this->returnValue($selection));
$result = $this->service->addChild('product_sku', 1, $productLink);
$this->assertEquals(42, $result);
}
