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

            config.Setup(x => x.GetSetting(It.IsAny <string>())).Returns("some value");

            var repo   = new LunchRepository(config.Object);
            var result = await repo.GetValueAsync(1);

            Assert.AreEqual(result, "some value");
        }