unit tests for cache clearing passing

test/Ocelot.UnitTests/Cache/RegionCreatorTests.cs

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+using System.Collections.Generic;
+using Ocelot.Cache;
+using Ocelot.Configuration;
+using Ocelot.Configuration.Builder;
+using Shouldly;
+using TestStack.BDDfy;
+using Xunit;
+
+namespace Ocelot.UnitTests.Cache
+{
+    public class RegionCreatorTests
+    {
+        private string _result;
+        private ReRoute _reRoute;
+
+        [Fact]
+        public void should_create_region()
+        {
+            var reRoute = new ReRouteBuilder()
+                                .WithUpstreamHttpMethod(new List<string>{"Get"})
+                                .WithUpstreamPathTemplate("/test/dummy")
+                                .Build();
+
+            this.Given(_ => GivenTheReRoute(reRoute))
+                .When(_ => WhenICreateTheRegion())
+                .Then(_ => ThenTheRegionIs("Get /test/dummy"))
+                .BDDfy();
+        }
+        
+        private void GivenTheReRoute(ReRoute reRoute)
+        {
+            _reRoute = reRoute;
+        }
+
+        private void WhenICreateTheRegion()
+        {            
+            RegionCreator regionCreator = new RegionCreator();
+            _result = regionCreator.Region(_reRoute);
+        }
+
+        private void ThenTheRegionIs(string expected)
+        {
+            _result.ShouldBe(expected);
+        }
+    }
+}