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Cover LoadBalancerFactory edge-case by a unit test.

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This commit is contained in:
David Lievrouw
2019-07-10 20:59:38 +02:00
parent fd35ad0514
commit 22f304cecf
1 changed files with 30 additions and 1 deletions
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31
test/Ocelot.UnitTests/LoadBalancer/LoadBalancerFactoryTests.cs
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@@ -8,6 +8,7 @@ using Ocelot.ServiceDiscovery.Providers;
using Shouldly;
using System.Collections.Generic;
using System.Threading.Tasks;
using Ocelot.Infrastructure.RequestData;
using Ocelot.Middleware;
using Ocelot.Values;
using TestStack.BDDfy;
@@ -39,7 +40,7 @@ namespace Ocelot.UnitTests.LoadBalancer
}
[Fact]
public void should_return_no_load_balancer()
public void should_return_no_load_balancer_by_default()
{
var reRoute = new DownstreamReRouteBuilder()
.WithUpstreamHttpMethod(new List<string> { "Get" })
@@ -85,6 +86,22 @@ namespace Ocelot.UnitTests.LoadBalancer
.BDDfy();
}
[Fact]
public void should_return_error_response_when_call_to_service_provider_fails()
{
var reRoute = new DownstreamReRouteBuilder()
.WithLoadBalancerOptions(new LoadBalancerOptions("FakeLoadBalancerOne", "", 0))
.WithUpstreamHttpMethod(new List<string> { "Get" })
.Build();
this.Given(x => x.GivenAReRoute(reRoute))
.And(x => GivenAServiceProviderConfig(new ServiceProviderConfigurationBuilder().Build()))
.And(x => x.GivenTheServiceProviderFactoryFails())
.When(x => x.WhenIGetTheLoadBalancer())
.Then(x => x.ThenAnErrorResponseIsReturned())
.BDDfy();
}
private void GivenAServiceProviderConfig(ServiceProviderConfiguration serviceProviderConfig)
{
_serviceProviderConfig = serviceProviderConfig;
@@ -97,6 +114,13 @@ namespace Ocelot.UnitTests.LoadBalancer
.Returns(new OkResponse<IServiceDiscoveryProvider>(_serviceProvider.Object));
}
private void GivenTheServiceProviderFactoryFails()
{
_serviceProviderFactory
.Setup(x => x.Get(It.IsAny<ServiceProviderConfiguration>(), It.IsAny<DownstreamReRoute>()))
.Returns(new ErrorResponse<IServiceDiscoveryProvider>(new CannotFindDataError("For tests")));
}
private void ThenTheServiceProviderIsCalledCorrectly()
{
_serviceProviderFactory
@@ -118,6 +142,11 @@ namespace Ocelot.UnitTests.LoadBalancer
_result.Data.ShouldBeOfType<T>();
}
private void ThenAnErrorResponseIsReturned()
{
_result.IsError.ShouldBeTrue();
}
private class FakeLoadBalancerCreator<T> : ILoadBalancerCreator
where T : ILoadBalancer, new()
{