public async Task NonEmptyString_ReturnsAValue()
        {
            var service = new ShakespeareApiClient(new HttpClient());
            var result  = await service.TranslateToShakespearean("the", CancellationToken.None);

            Assert.NotNull(result);
        }
        public async Task NonUrlSafe_ReturnsAValue()
        {
            var service = new ShakespeareApiClient(new HttpClient());
            var result  = await service.TranslateToShakespearean("compare ya to a summers day? Or nah?", CancellationToken.None);

            Assert.NotNull(result);
        }
        public async Task NullString_ReturnsNull()
        {
            var service = new ShakespeareApiClient(new HttpClient());
            var result  = await service.TranslateToShakespearean(null, CancellationToken.None);

            Assert.Null(result);
        }
        public async Task NewLineInString_IsReplacedWithSpace()
        {
            var service = new ShakespeareApiClient(new HttpClient());
            var result  = await service.TranslateToShakespearean("s\ns", CancellationToken.None);

            Assert.NotNull(result);
            Assert.Equal("S s", result.Contents.Translated);
        }
 //  For public API calls this is 60 API calls a day with distribution of 5 calls an hour.
 // this tests that the API 429 exceptions (too many requests) are bubbled up. Uncomment out the [Fact] attribute to run it, but be aware this will break the other integration tests.
 //  [Fact]
 public async Task TooManyApiCalls_ReturnsNull()
 {
     var service = new ShakespeareApiClient(new HttpClient());
     await Assert.ThrowsAsync <TooManyRequestsException>(async() =>
     {
         for (int i = 0; i < 60; i++)
         {
             var result = await service.TranslateToShakespearean("compare ya to a summers day? Or nah?", CancellationToken.None);
             Assert.NotNull(result);
         }
     });
 }