public void When_a_registration_made_using_TryRegisterSingle_already_exists_then_TryRegisterSingle_T_does_not_overwrite_it()
{
var container = new PocketContainer();
container.TryRegisterSingle(c => "one");
container.TryRegisterSingle(c => "two");
container.Resolve <string>().Should().Be("one");
}
public void When_no_registration_exists_then_TryRegisterSingle_registers()
{
var container = new PocketContainer();
container.TryRegisterSingle(typeof(string), c => "one");
container.Resolve <string>().Should().Be("one");
}
public void When_a_registration_made_using_TryRegisterSingle_already_exists_but_has_not_been_resolved_then_TryRegisterSingle_does_not_trigger_its_resolution()
{
var container = new PocketContainer();
var resolved = false;
container.RegisterSingle(c =>
{
resolved = true;
return("one");
});
container.TryRegisterSingle(typeof(string), c => "two");
resolved.Should().BeFalse();
}
public void When_a_strategy_has_resolved_an_unregistered_type_then_TryRegisterSingle_will_not_overwrite_it()
{
var container = new PocketContainer();
container.AddStrategy(type =>
{
if (typeof(string) == type)
{
return(c => "one");
}
return(null);
});
// trigger the strategy
container.Resolve <string>();
container.TryRegisterSingle(typeof(string), c => "two");
container.Resolve <string>().Should().Be("one");
}