public void Setup()
{
// Of course we should test these first but I'm too lazy.
IConfigurationSource source = new DiConfigurationSource(@"Server=MYLLY; User Id=ConfigReader; Password=ConfigReader;", "TEST");
IConfigurationProvider provider = source.Build(null);
provider.Load();
// Mock these objects.
var collection = new Mock <ServiceCollectionWrapper>();
// XXX : This is a mess. Unmess this sometime.
// We load configuration provided by our DiConfigurationProvider (using DiConfigurationSource as source)
// and return configurations to caller.
var diConfiguration = new Mock <IConfigurationSection>();
diConfiguration.Setup(f => f.GetChildren())
.Returns(() =>
{
return(provider.GetChildKeys(Enumerable.Empty <string>(), "DiConfiguration").Distinct().Select(parentKey =>
{
var mock = new Mock <IConfigurationSection>();
mock.Setup(f => f.Key).Returns(parentKey);
mock.Setup(f => f.GetChildren())
.Returns(() => provider.GetChildKeys(Enumerable.Empty <string>(), "DiConfiguration:" + parentKey).Distinct().Select(childKey =>
{
var mock = new Mock <IConfigurationSection>();
mock.Setup(f => f.GetSection(It.IsNotNull <string>())).Returns((string section) =>
{
var mock = new Mock <IConfigurationSection>();
mock.Setup(f => f.Value).Returns(() => provider.TryGet($"DiConfiguration:{parentKey}:{childKey}:{section}", out string value) ? value : "");
return mock.Object;
});
return mock.Object;
}));
return mock.Object;
}));
});
// Main/head configuration. Returns only DI configuration mockup.
var configuration = new Mock <IConfiguration>();
configuration.Setup(f => f.GetSection(It.IsAny <string>()))
.Returns(diConfiguration.Object);
// Builds DI services and fetches the one and only service we actually need to run the tests.
// DiServiceBuilder should be tested also before calling it.
DiServiceBuilder.AddDiServices(collection.Object, configuration.Object);
carSalesman = collection.Object.GetService(typeof(ICarSalesman)) as ICarSalesman;
}
// DI magic can be seen here. See above we have introduced instance variable called 'carSalesman'.
// It is null until we give it value here on the class constructor. But where does the parameter comes from?
// Well, we configured our little DI service builder in Startup.cs file, remember?
public HomeController(ILogger <HomeController> logger, ICarSalesman carSalesman)
{
this.logger = logger;
this.carSalesman = carSalesman;
}
