AC-3515::Verify that If quantity gets updated, mini cart subtotal should be updated accordingly

Author: mahesh-singh-rajawat

app/code/Magento/Multishipping/Model/Cart/MultishippingClearItemAddress.php

@@ -104,6 +104,7 @@ public function clearAddressItem($subject, $request)
                 $quote = $this->cartRepository->get($quote->getId());
                 $this->cartmodel->setQuote($quote);
             }
+            $this->checkoutSession->clearQuote();
         } elseif ($this->disableMultishipping->execute($quote) && $this->isVirtualItemInQuote($quote)) {
             $quote->setTotalsCollectedFlag(false);
             $this->cartRepository->save($quote);

app/code/Magento/Multishipping/Test/Unit/Model/Cart/MultishippingClearItemAddressTest.php

@@ -100,7 +100,8 @@ public function testClearAddressItem(
             ->willReturn($actionName);
         $this->checkoutSessionMock->method('getQuote')
             ->willReturn($quoteMock);
-
+        $this->checkoutSessionMock->method('clearQuote')
+            ->willReturnSelf();
         $addressMock = $this->createMock(Address::class);
         $addressMock->method('getId')
             ->willReturn($addressId);