public async Task GetIntValue_ReturnsSomeInt()
        {
            var config = new Mock <IConfigurationManager>();

            config.Setup(x => x.GetSetting <int>(It.IsAny <string>(), 0)).Returns(12);

            var repo   = new LunchRepository(config.Object);
            var result = await repo.GetIntValueAsync();

            Assert.IsInstanceOfType(result, typeof(int));
            Assert.AreEqual(result, 12);
        }