void AppVeyorUpdateTest(string testName, string testFramework, string fileName, string outcome, long?durationMilliseconds,
                                string errorMessage, string errorStackTrace, string stdOut)
        {
            var body = new Dictionary <string, object>
            {
                { "testName", testName },
                { "testFramework", testFramework },
                { "fileName", fileName },
                { "outcome", outcome },
                { "durationMilliseconds", durationMilliseconds },
                { "ErrorMessage", errorMessage },
                { "ErrorStackTrace", errorStackTrace },
                { "StdOut", TrimStdOut(stdOut) },
            };

            client.UpdateTest(body);
        }