public void IfServiceByNameIsRequested_ThenGetServiceFactoryIsCalledWithCorrectParams()
{
// Arrange
var serviceProviderMock = new Mock <IServiceProvider>();
var getServiceMock = new Mock <Func <string, IServiceProvider, IFoo> >();
var serviceWithKey = new ServiceWithKey <string, IFoo>(serviceProviderMock.Object, getServiceMock.Object) as IServiceWithKey <string, IFoo>;
const string key = "foo";
// Act
var service = serviceWithKey[key];
// Assert
using (new AssertionScope())
{
getServiceMock.Invocations.Count.Should().Be(1, "getService() method for given key should be called only once");
getServiceMock.Invocations[0].Arguments[0].Should().Be("foo");
getServiceMock.Invocations[0].Arguments[1].Should().BeSameAs(serviceProviderMock.Object);
}
}
public void IfServiceByNameIsRequestedMultipleTimes_ThenGetServiceFactoryIsCalledOlyOnce()
{
// Arrange
var serviceProviderMock = new Mock <IServiceProvider>();
var getServiceMock = new Mock <Func <string, IServiceProvider, IFoo> >();
var serviceWithKey = new ServiceWithKey <string, IFoo>(serviceProviderMock.Object, getServiceMock.Object) as IServiceWithKey <string, IFoo>;
const string key = "foo";
// Act
var service1 = serviceWithKey[key];
var service2 = serviceWithKey[key];
var service3 = serviceWithKey[key];
// Assert
using (new AssertionScope())
{
getServiceMock.Invocations.Count.Should().Be(1, "getService() method for given key should be called only once");
getServiceMock.Invocations[0].Arguments[0].Should().Be("foo");
getServiceMock.Invocations[0].Arguments[1].Should().BeSameAs(serviceProviderMock.Object);
service2.Should().BeSameAs(service1, $"for particular key the same instance has to be returned everytime");
service3.Should().BeSameAs(service1, $"for particular key the same instance has to be returned everytime");
}
}