public void WebApi_DependencyResolver_GetService_should_return_null_when_unresolved()
{
HttpConfiguration unitTestWebApiConfiguration = new HttpConfiguration();
ApplicationDependencyInjection di = new ApplicationDependencyInjectionBuilder()
.ConfigureServices(services => { })
.AddWebApiDependencyResolver(unitTestWebApiConfiguration)
.Build();
using ( di )
{
DependencyInjectionWebApiDependencyResolver webApiResolverInstance = di.GetClients()
.OfType <DependencyInjectionWebApiDependencyResolver>()
.Single();
//
IDependencyResolver webApiResolver = webApiResolverInstance;
//
{
Object implementation = webApiResolver.GetService(typeof(INonRegisteredService));
implementation.ShouldBeNull();
}
// And call it again for good measure:
{
Object implementation = webApiResolver.GetService(typeof(INonRegisteredService));
implementation.ShouldBeNull();
}
}
}
public void WebApi_DependencyResolver_GetServices_should_return_empty_enumerable_when_unresolved()
{
HttpConfiguration unitTestWebApiConfiguration = new HttpConfiguration();
ApplicationDependencyInjection di = new ApplicationDependencyInjectionBuilder()
.ConfigureServices(services => { })
.AddWebApiDependencyResolver(unitTestWebApiConfiguration)
.Build();
using ( di )
{
DependencyInjectionWebApiDependencyResolver webApiResolverInstance = di.GetClients()
.OfType <DependencyInjectionWebApiDependencyResolver>()
.Single();
//
IDependencyResolver webApiResolver = webApiResolverInstance;
//
IEnumerable <Object> services = webApiResolver.GetServices(typeof(INonRegisteredService));
_ = services.ShouldNotBeNull();
services.Count().ShouldBe(expected: 0);
// Check twice, in case of IEnumerable<T> implementation shenanigans:
services.Count().ShouldBe(expected: 0);
}
}
protected void WrapTest <T>(Action <IServiceCollection> configure, Action <IDependencyResolver, T> testImpl, T arg)
{
HttpConfiguration nonSystemWebConfiguration = new HttpConfiguration();
ApplicationDependencyInjection di = new ApplicationDependencyInjectionBuilder()
.ConfigureServices(configure)
.AddWebApiDependencyResolver(nonSystemWebConfiguration)
.Build();
using ( di )
{
DependencyInjectionWebApiDependencyResolver webApiResolverInstance = di.GetClients()
.OfType <DependencyInjectionWebApiDependencyResolver>()
.Single();
IDependencyResolver webApiResolver = webApiResolverInstance;
testImpl(webApiResolver, arg);
}
}
