public void IfServiceDescriptorWithImplementationInstanceIsProvided_ThenNullIsReturned()
{
// Arrange
var registeredServices = new RegisteredServices <string, IFoo>();
var singletonDescriptor = ServiceDescriptor.Singleton <IFoo>(new Foo());
var key = "key";
// Act
Func <ServiceDescriptor> act = () => registeredServices.TryAddService(key, singletonDescriptor);
// Asset
var result = act.Should().NotThrow().Subject;
result.Should().BeNull();
}
public void IfTheSameKeyIsAddedMultipleTimes_ThenOnlyFirstCallReturnsAdjustedServiceDescriptorAndSubsequentCallsRetunNull()
{
// Arrange
var registeredServices = new RegisteredServices <string, IFoo>();
var transientDescriptor = ServiceDescriptor.Transient <IFoo, Foo>();
var key = "key";
// Act
Func <(ServiceDescriptor, ServiceDescriptor, ServiceDescriptor)> act = () =>
(
registeredServices.TryAddService(key, transientDescriptor),
registeredServices.TryAddService(key, transientDescriptor),
registeredServices.TryAddService(key, transientDescriptor)
);
// Asset
using (new AssertionScope())
{
var(result1, result2, result3) = act.Should().NotThrow().Subject;
result1.Should().BeEquivalentTo(ServiceDescriptor.Transient <Foo, Foo>());
result2.Should().BeNull();
result3.Should().BeNull();
}
}