public void when_requesting_value_on_multiple_threads_then_value_is_created_once()
{
var mockValueFactory = Substitute.For <Func <object> >();
var lazy = new LazyLifecycleObject <object>(mockValueFactory);
var obj = new object();
mockValueFactory.Invoke().Returns(obj);
object value1 = null;
object value2 = null;
Task.WaitAll(
Task.Run(async() =>
{
await Task.Yield();
value1 = lazy.Value;
}),
Task.Run(async() =>
{
await Task.Yield();
value2 = lazy.Value;
})
);
value1.ShouldBeTheSameAs(obj);
value2.ShouldBeTheSameAs(obj);
lazy.IsValueCreated.ShouldBeTrue();
mockValueFactory.Received(1).Invoke();
}
public void when_initializing_then_value_is_not_created()
{
var mockValueFactory = Substitute.For <Func <object> >();
var lazy = new LazyLifecycleObject <object>(mockValueFactory);
lazy.IsValueCreated.ShouldBeFalse();
lazy.ToString().ShouldBe("Value is not created.");
mockValueFactory.Received(0).Invoke();
}
public void when_requesting_value_then_value_is_created()
{
var mockValueFactory = Substitute.For <Func <object> >();
var lazy = new LazyLifecycleObject <object>(mockValueFactory);
var obj = new object();
mockValueFactory.Invoke().Returns(obj);
var value = lazy.Value;
value.ShouldBeTheSameAs(obj);
lazy.IsValueCreated.ShouldBeTrue();
lazy.ToString().ShouldBe(obj.ToString());
mockValueFactory.Received(1).Invoke();
}
