SampleFunctionTests.cs

using Azure;
using Azure.Data.Tables;
using Polly;
using System;
using System.Net.Http;
using System.Threading.Tasks;
using Xunit;

namespace AdaTheDev.AzureFunctionsE2ETests
{
    [Collection(nameof(AzureFunctionsTestsCollection))]
    public class SampleFunctionTests
    {
        private readonly AzureFunctionsFixture _fixture;

        public SampleFunctionTests(AzureFunctionsFixture fixture)
        {
            _fixture = fixture;
        }

        [Fact]
        public async Task SimpleE2ETest()
        {
            var uniqueId = Guid.NewGuid();
            var content = new StringContent(uniqueId.ToString()); 
            
            // Send in a request to HTTP endpoint in SampleFunctionApp1...
            var response = await _fixture.Client.PostAsync("api/QueueOutput", content);
                        
            response.EnsureSuccessStatusCode();

            // Settings from local-e2e.settings.json in SampleFunctionApp1 should have been swapped in.
            // Lookup the value based on the E2E setting
            string lookupValue = "E2E-" + uniqueId.ToString();

            // For this example, we're just going to poll the Azure Storage Table directly to see if the record was created.			
            // To be tolerant of a delay in processing and therefore not finding the record straight away, using Polly retry
            // policy to check for the record every second, for up to 5 seconds.
            var policy = Policy.Handle<RequestFailedException>(x => x.Status == 404).WaitAndRetryAsync(5, i => TimeSpan.FromSeconds(1));
            await policy.ExecuteAsync(async () =>
            {
                await _fixture.TableClient.GetEntityAsync<TableEntity>("Test", lookupValue);				
            });
        }
    }
}