public async Task GetJsonOutputAsync_Success()
        {
            JsonDataClass output = await _objectUnderTest.GetJsonOutputAsync <JsonDataClass>(EchoAppName, JsonArgs);

            Assert.IsNotNull(output);
            Assert.IsNotNull(output.Var);
            Assert.AreEqual(ProcessOutput, output.Var);
        }
        public async Task GetJsonOutputAsync_GetsNull()
        {
            JsonDataClass output = await _objectUnderTest.GetJsonOutputAsync <JsonDataClass>(EchoAppName, "-null");

            Assert.IsNull(output);
        }