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Merge branch 'feature/fix-unstable-raft-tests' into develop

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Tom Gardham-Pallister
2018-05-09 18:41:11 +01:00
parent 4e17190b3f 22fc8668af
commit e32823c58b
15 changed files with 1930 additions and 1743 deletions
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145
test/Ocelot.UnitTests/LoadBalancer/CookieStickySessionsTests.cs
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@ -1,5 +1,6 @@
namespace Ocelot.UnitTests.LoadBalancer
{
using System;
using System.Threading.Tasks;
using Ocelot.LoadBalancer.LoadBalancers;
using Ocelot.Responses;
@ -10,28 +11,43 @@ namespace Ocelot.UnitTests.LoadBalancer
using Microsoft.AspNetCore.Http;
using System.Collections.Generic;
using System.Collections;
using System.Threading;
using Ocelot.Middleware;
using Ocelot.UnitTests.Responder;
using TestStack.BDDfy;
using Ocelot.Infrastructure;
public class CookieStickySessionsTests
{
private readonly CookieStickySessions _stickySessions;
private readonly Mock<ILoadBalancer> _loadBalancer;
private readonly int _defaultExpiryInMs;
private DownstreamContext _downstreamContext;
private Response<ServiceHostAndPort> _result;
private Response<ServiceHostAndPort> _firstHostAndPort;
private Response<ServiceHostAndPort> _secondHostAndPort;
private readonly FakeBus<StickySession> _bus;
public CookieStickySessionsTests()
{
_bus = new FakeBus<StickySession>();
_loadBalancer = new Mock<ILoadBalancer>();
const int defaultExpiryInMs = 100;
_stickySessions = new CookieStickySessions(_loadBalancer.Object, "sessionid", defaultExpiryInMs);
_defaultExpiryInMs = 0;
_stickySessions = new CookieStickySessions(_loadBalancer.Object, "sessionid", _defaultExpiryInMs, _bus);
_downstreamContext = new DownstreamContext(new DefaultHttpContext());
}
[Fact]
public void should_expire_sticky_session()
{
this.Given(_ => GivenTheLoadBalancerReturns())
.And(_ => GivenTheDownstreamRequestHasSessionId("321"))
.And(_ => GivenIHackAMessageInWithAPastExpiry())
.And(_ => WhenILease())
.When(_ => WhenTheMessagesAreProcessed())
.Then(_ => ThenTheLoadBalancerIsCalled())
.BDDfy();
}
[Fact]
public void should_return_host_and_port()
{
@ -48,6 +64,7 @@ namespace Ocelot.UnitTests.LoadBalancer
.And(_ => GivenTheDownstreamRequestHasSessionId("321"))
.When(_ => WhenILeaseTwiceInARow())
.Then(_ => ThenTheFirstAndSecondResponseAreTheSame())
.And(_ => ThenTheStickySessionWillTimeout())
.BDDfy();
}
@ -69,92 +86,26 @@ namespace Ocelot.UnitTests.LoadBalancer
.BDDfy();
}
[Fact]
public void should_expire_sticky_session()
{
this.Given(_ => GivenTheLoadBalancerReturnsSequence())
.When(_ => WhenTheStickySessionExpires())
.Then(_ => ThenANewHostAndPortIsReturned())
.BDDfy();
}
[Fact]
public void should_refresh_sticky_session()
{
this.Given(_ => GivenTheLoadBalancerReturnsSequence())
.When(_ => WhenIMakeRequestsToKeepRefreshingTheSession())
.Then(_ => ThenTheSessionIsRefreshed())
.BDDfy();
}
[Fact]
public void should_dispose()
{
_stickySessions.Dispose();
}
[Fact]
public void should_release()
{
_stickySessions.Release(new ServiceHostAndPort("", 0));
}
private async Task ThenTheSessionIsRefreshed()
private void ThenTheLoadBalancerIsCalled()
{
var postExpireHostAndPort = await _stickySessions.Lease(_downstreamContext);
postExpireHostAndPort.Data.DownstreamHost.ShouldBe("one");
postExpireHostAndPort.Data.DownstreamPort.ShouldBe(80);
_loadBalancer
.Verify(x => x.Lease(It.IsAny<DownstreamContext>()), Times.Once);
_loadBalancer.Verify(x => x.Release(It.IsAny<ServiceHostAndPort>()), Times.Once);
}
private async Task WhenIMakeRequestsToKeepRefreshingTheSession()
private void WhenTheMessagesAreProcessed()
{
var context = new DefaultHttpContext();
var cookies = new FakeCookies();
cookies.AddCookie("sessionid", "321");
context.Request.Cookies = cookies;
_downstreamContext = new DownstreamContext(context);
var firstHostAndPort = await _stickySessions.Lease(_downstreamContext);
firstHostAndPort.Data.DownstreamHost.ShouldBe("one");
firstHostAndPort.Data.DownstreamPort.ShouldBe(80);
Thread.Sleep(80);
var secondHostAndPort = await _stickySessions.Lease(_downstreamContext);
secondHostAndPort.Data.DownstreamHost.ShouldBe("one");
secondHostAndPort.Data.DownstreamPort.ShouldBe(80);
Thread.Sleep(80);
_bus.Process();
}
private async Task ThenANewHostAndPortIsReturned()
private void GivenIHackAMessageInWithAPastExpiry()
{
var postExpireHostAndPort = await _stickySessions.Lease(_downstreamContext);
postExpireHostAndPort.Data.DownstreamHost.ShouldBe("two");
postExpireHostAndPort.Data.DownstreamPort.ShouldBe(80);
}
private async Task WhenTheStickySessionExpires()
{
var context = new DefaultHttpContext();
var cookies = new FakeCookies();
cookies.AddCookie("sessionid", "321");
context.Request.Cookies = cookies;
_downstreamContext = new DownstreamContext(context);
var firstHostAndPort = await _stickySessions.Lease(_downstreamContext);
var secondHostAndPort = await _stickySessions.Lease(_downstreamContext);
firstHostAndPort.Data.DownstreamHost.ShouldBe("one");
firstHostAndPort.Data.DownstreamPort.ShouldBe(80);
secondHostAndPort.Data.DownstreamHost.ShouldBe("one");
secondHostAndPort.Data.DownstreamPort.ShouldBe(80);
Thread.Sleep(150);
var hostAndPort = new ServiceHostAndPort("999", 999);
_bus.Publish(new StickySession(hostAndPort, DateTime.UtcNow.AddDays(-1), "321"), 0);
}
private void ThenAnErrorIsReturned()
@ -236,9 +187,14 @@ namespace Ocelot.UnitTests.LoadBalancer
{
_result.Data.ShouldNotBeNull();
}
private void ThenTheStickySessionWillTimeout()
{
_bus.Messages.Count.ShouldBe(2);
}
}
class FakeCookies : IRequestCookieCollection
internal class FakeCookies : IRequestCookieCollection
{
private readonly Dictionary<string, string> _cookies = new Dictionary<string, string>();
@ -273,4 +229,37 @@ namespace Ocelot.UnitTests.LoadBalancer
return _cookies.GetEnumerator();
}
}
internal class FakeBus<T> : IBus<T>
{
public FakeBus()
{
Messages = new List<T>();
Subscriptions = new List<Action<T>>();
}
public List<T> Messages { get; }
public List<Action<T>> Subscriptions { get; }
public void Subscribe(Action<T> action)
{
Subscriptions.Add(action);
}
public void Publish(T message, int delay)
{
Messages.Add(message);
}
public void Process()
{
foreach (var message in Messages)
{
foreach (var subscription in Subscriptions)
{
subscription(message);
}
}
}
}
}