public void should_return_specified_type_as_actual_type_when_not_initialized()
{
var factory = Substitute.For<Func<IList>>();
var value = new SimpleValue(typeof(IList).ToCachedType());
var lazy = new LazyValue(value, factory);
lazy.SpecifiedType.Type.ShouldBe<IList>();
lazy.ActualType.Type.ShouldBe<IList>();
factory.DidNotReceiveWithAnyArgs().Invoke();
}
public void should_get_actual_and_specified_type_when_initialized()
{
var factory = Substitute.For<Func<IList>>();
factory.Invoke().Returns(new List<string>());
var value = new SimpleValue(typeof(IList).ToCachedType());
var lazy = new LazyValue(value, factory);
var instance = lazy.Instance;
lazy.SpecifiedType.Type.ShouldBe<IList>();
lazy.ActualType.Type.ShouldBe<List<string>>();
factory.Received(1);
}
public void should_deterministically_create_value()
{
var factory = Substitute.For<Func<string>>();
factory.Invoke().Returns("hai");
var value = new SimpleValue(typeof(string).ToCachedType());
var lazy = new LazyValue(value, factory);
value.Instance.ShouldBeNull();
for (var i = 0; i < 5; i++)
{
lazy.EnsureValue();
lazy.SpecifiedType.Type.ShouldBe<string>();
lazy.ActualType.Type.ShouldBe<string>();
value.Instance.ShouldEqual("hai");
}
factory.Received(1);
}
public void should_allow_value_override()
{
var factory = Substitute.For<Func<string>>();
factory.Invoke().Returns("oh");
var value = new SimpleValue(typeof(string).ToCachedType());
var lazy = new LazyValue(value, factory);
value.Instance.ShouldBeNull();
lazy.Instance = "hai";
for (var i = 0; i < 5; i++)
{
lazy.Instance.ShouldEqual("hai");
lazy.SpecifiedType.Type.ShouldBe<string>();
lazy.ActualType.Type.ShouldBe<string>();
value.Instance.ShouldEqual("hai");
}
factory.DidNotReceiveWithAnyArgs();
}
public void should_pull_type_and_readonly_from_inner_value()
{
var type = typeof(string).ToCachedType();
var lazy = new LazyValue(new SimpleValue(type), () => null);
lazy.SpecifiedType.Type.ShouldBe<string>();
lazy.IsReadonly.ShouldBeFalse();
lazy = new LazyValue(new SimpleValue(null, type, true), () => null);
lazy.SpecifiedType.Type.ShouldBe<string>();
lazy.IsReadonly.ShouldBeTrue();
}
