public void CreateStaticSetter1Works()
{
var field = typeof(Corge).GetField(nameof(Corge.Bar));
Action <int> setter;
var queued = (Callback : (WaitCallback)null !, FieldSetter : (StaticFieldSetter <int>)null !);
void queueUserWorkItem(WaitCallback callback, object state) => queued = (callback, (StaticFieldSetter <int>)state);
FieldInfoExtensions.SetQueueUserWorkItemAction(queueUserWorkItem);
try
{
setter = field !.CreateStaticSetter <int>();
}
finally
{
FieldInfoExtensions.SetQueueUserWorkItemAction(null !);
}
// Verify that a work item was queued
queued.FieldSetter.Should().NotBeNull();
queued.Callback.Should().NotBeNull();
// Verify that the return delegate is correct
setter.Target.Should().BeSameAs(queued.FieldSetter);
setter.Method.Name.Should().Be(nameof(StaticFieldSetter <int> .SetValue));
setter.Method.DeclaringType.Should().Be(typeof(StaticFieldSetter <int>));
// Verify that the queued Callback calls the SetOptimizedFunc
// method of the queued FieldSetter.
var beforeAction = queued.FieldSetter.Action;
queued.Callback.Invoke(queued.FieldSetter);
var afterAction = queued.FieldSetter.Action;
beforeAction.Should().NotBeSameAs(afterAction);
}
public void CreateGetter2Works()
{
Func <Foo, int> getter;
var queued = (Callback : (WaitCallback)null !, FieldGetter : (FieldGetter <Foo, int>)null !);
void queueUserWorkItem(WaitCallback callback, object state) => queued = (callback, (FieldGetter <Foo, int>)state);
FieldInfoExtensions.SetQueueUserWorkItemAction(queueUserWorkItem);
try
{
getter = _field.CreateGetter <Foo, int>();
}
finally
{
FieldInfoExtensions.SetQueueUserWorkItemAction(null !);
}
// Verify that a work item was queued
queued.FieldGetter.Should().NotBeNull();
queued.Callback.Should().NotBeNull();
// Verify that the return delegate is correct
getter.Target.Should().BeSameAs(queued.FieldGetter);
getter.Method.Name.Should().Be(nameof(FieldGetter <Foo, int> .GetValue));
getter.Method.DeclaringType.Should().Be(typeof(FieldGetter <Foo, int>));
// Verify that the queued Callback calls the SetOptimizedFunc
// method of the queued FieldGetter.
var beforeFunc = queued.FieldGetter.Func;
queued.Callback.Invoke(queued.FieldGetter);
var afterFunc = queued.FieldGetter.Func;
beforeFunc.Should().NotBeSameAs(afterFunc);
}