ACP2E-1512: Env variable config not working for store views with capital letters in the code

adjusted unit tests

Author: aplapana

lib/internal/Magento/Framework/App/Config/ScopeCodeResolver.php

@@ -59,7 +59,7 @@ public function resolve($scopeType, $scopeCode)
             $scopeCode = $resolverScopeCode;
         }
 
-        $this->resolvedScopeCodes[$scopeType][$scopeCode] = strtolower($resolverScopeCode);
+        $this->resolvedScopeCodes[$scopeType][$scopeCode] = $resolverScopeCode ?: strtolower($resolverScopeCode);
 
         return $this->resolvedScopeCodes[$scopeType][$scopeCode];
     }

lib/internal/Magento/Framework/App/Test/Unit/Config/ScopeCodeResolverTest.php

@@ -67,6 +67,6 @@ public function testResolve()
         $this->scope->expects($this->once())
             ->method('getCode')
             ->willReturn($scopeCode);
-        $this->assertEquals($scopeCode, $this->scopeCodeResolver->resolve($scopeType, $scopeId));
+        $this->assertEquals(strtolower($scopeCode), $this->scopeCodeResolver->resolve($scopeType, $scopeId));
     }
 }

lib/internal/Magento/Framework/App/Test/Unit/ConfigTest.php

@@ -71,7 +71,7 @@ public function testGetValue($scope, $scopeCode = null)
         }
         $this->configType->expects($this->once())
             ->method('get')
-            ->with($scope =='store' ? 'stores/path' : 'websites/myWebsite/path')
+            ->with($scope =='store' ? 'stores/path' : 'websites/mywebsite/path')
             ->willReturn(true);
 
         $this->assertTrue($this->appConfig->getValue($path, $scope, $scopeCode ?: $this->scope));