MAGETWO-28254: ConfigurableProduct Integration API

    - Fix unit test failure

Author: Yu Tang

app/code/Magento/ConfigurableProduct/Test/Unit/Model/Product/Type/ConfigurableTest.php

@@ -629,14 +629,12 @@ public function testGetProductByAttributesReturnUsedProduct()
             ->method('getData')
             ->with('_cache_instance_store_filter')
             ->willReturn('some_filter');
-        $productMock->expects($this->once())->method('hasData')->willReturn(true);
-        $productMock->expects($this->at(3))->method('getData')->willReturn([$usedProductMock]);
-        $productMock->expects($this->once())->method('getResource')->willReturn($productResource);
-        $productMock->expects($this->once())->method('getAttributeSetId')->willReturn(5);
-        $productResource->expects($this->once())->method('loadAllAttributes')->with($productMock)->willReturnSelf();
-        $productResource->expects($this->once())
-            ->method('getSortedAttributes')
-            ->with(5)
+        $productMock->expects($this->any())->method('hasData')->willReturn(true);
+        $productMock->expects($this->at(3))->method('getData')
+            ->with('_cache_instance_products')
+            ->willReturn([$usedProductMock]);
+        $productMock->expects($this->at(5))->method('getData')
+            ->with('_cache_instance_product_set_attributes')
             ->willReturn([$eavAttributeMock]);
         $eavAttributeMock->expects($this->once())->method('getId')->willReturn(1);
         $eavAttributeMock->expects($this->once())->method('getAttributeCode')->willReturn('attr_code');