public void Non_nullability_can_be_specified_on_both_navigations() { var modelBuilder = CreateModelBuilder(); var model = (Model)modelBuilder.Model; modelBuilder.Entity <BlogDetails>().HasOne(b => b.Blog).WithOne(b => b.BlogDetails); var logEntry = ListLoggerFactory.Log.Single(); Assert.Equal(LogLevel.Debug, logEntry.Level); Assert.Equal( CoreResources.LogNonNullableReferenceOnBothNavigations(new TestLogger <TestLoggingDefinitions>()).GenerateMessage( nameof(Blog), nameof(Blog.BlogDetails), nameof(BlogDetails), nameof(BlogDetails.Blog)), logEntry.Message); }