public void MaxAgeInSecondsNull() { JsonDocument doc = JsonDocument.Parse(@"{ ""allowedOrigins"": [ ""*"" ], ""maxAgeInSeconds"": null }"); CorsOptions sut = CorsOptions.DeserializeCorsOptions(doc.RootElement); CollectionAssert.AreEqual(sut.AllowedOrigins, new[] { "*" }); Assert.IsNull(sut.MaxAgeInSeconds); }