public async Task Should_GetTimeSeries_Fundamentals_Annual() { var config = new ConfigurationBuilder() .AddJsonFile("appsettings.json") .Build(); string token = config["TOKEN"]; IEXClient client = new IEXClient(IEXBaseUrl.SandboxUrl, token); string result = await client.GetTimeSeriesFundamentals("MSFT", "annual", new DateTime(2000, 1, 1), DateTime.Now); result.Should().NotBeNullOrEmpty(); }