public void UpdateFeatures_ClearsCachedFeatures()
{
var features = new FeatureCollection();
features.Set<IHttpRequestFeature>(new HttpRequestFeature());
features.Set<IHttpResponseFeature>(new HttpResponseFeature());
features.Set<IHttpWebSocketFeature>(new TestHttpWebSocketFeature());
// featurecollection is set. all cached interfaces are null.
var context = new DefaultHttpContext(features);
TestAllCachedFeaturesAreNull(context, features);
Assert.Equal(3, features.Count());
// getting feature properties populates feature collection with defaults
TestAllCachedFeaturesAreSet(context, features);
Assert.NotEqual(3, features.Count());
// featurecollection is null. and all cached interfaces are null.
// only top level is tested because child objects are inaccessible.
context.Uninitialize();
TestCachedFeaturesAreNull(context, null);
var newFeatures = new FeatureCollection();
newFeatures.Set<IHttpRequestFeature>(new HttpRequestFeature());
newFeatures.Set<IHttpResponseFeature>(new HttpResponseFeature());
newFeatures.Set<IHttpWebSocketFeature>(new TestHttpWebSocketFeature());
// featurecollection is set to newFeatures. all cached interfaces are null.
context.Initialize(newFeatures);
TestAllCachedFeaturesAreNull(context, newFeatures);
Assert.Equal(3, newFeatures.Count());
// getting feature properties populates new feature collection with defaults
TestAllCachedFeaturesAreSet(context, newFeatures);
Assert.NotEqual(3, newFeatures.Count());
}
