Patch-Magento_Store-emulation.patch

--- Model/App/Emulation.php
+++ Model/App/Emulation.php
@@ -195,7 +195,7 @@
             [
                 'area' => $this->_viewDesign->getArea(),
                 'theme' => $this->_viewDesign->getDesignTheme(),
-                'store' => $this->_storeManager->getStore()->getStoreId(),
+                'store' => $this->_storeManager->getStore()->getCode(),
             ]
         )->setInitialLocaleCode(
             $this->_localeResolver->getLocale()

--- Test/Unit/Model/App/EmulationTest.php
+++ Test/Unit/Model/App/EmulationTest.php
@@ -100,7 +100,7 @@
         $this->viewDesignMock = $this->getMockForAbstractClass('Magento\Framework\View\DesignInterface');
         $this->storeMock = $this->getMockBuilder('Magento\Store\Model\Store')
             ->disableOriginalConstructor()
-            ->setMethods(['__wakeup', 'getStoreId'])
+            ->setMethods(['__wakeup', 'getStoreId', 'getCode'])
             ->getMock();

         // Stubs
@@ -166,7 +166,7 @@
         $initArea = 'initial area';
         $initTheme = 'initial design theme';
         $initLocale = 'initial locale code';
-        $initialStore = 1;
+        $initStoreCode = 'default';
         $initTranslateInline = false;

         $this->inlineTranslationMock->expects($this->once())
@@ -179,7 +179,7 @@
             ->method('getDesignTheme')
             ->willReturn($initTheme);
         $this->storeManagerMock->expects($this->any())->method('getStore')->willReturn($this->storeMock);
-        $this->storeMock->expects($this->once())->method('getStoreId')->willReturn($initialStore);
+        $this->storeMock->expects($this->once())->method('getCode')->willReturn($initStoreCode);
         $this->localeResolverMock->expects($this->once())
             ->method('getLocale')
             ->willReturn($initLocale);
@@ -194,7 +194,7 @@
             ->method('setDesignTheme')
             ->with($initTheme, $initArea);
         $this->storeManagerMock->expects($this->once())
-            ->method('setCurrentStore')->with($initialStore);
+            ->method('setCurrentStore')->with($initStoreCode);
         $this->localeResolverMock->expects($this->once())
             ->method('setLocale')
             ->with($initLocale);