public async Task UpdateEntity()
{
// arrange
var entityStore = new EntityStore();
var entityId = new EntityId(nameof(MockEntity), 1);
IReadOnlyList <MockEntity> updated = Array.Empty <MockEntity>();
ulong version = 0;
using IDisposable subscription = entityStore.Watch().Subscribe(update =>
{
updated = update.Snapshot.GetEntities <MockEntity>(update.UpdatedEntityIds);
version = update.Version;
});
// act
entityStore.Update(session =>
{
session.SetEntity(entityId, new MockEntity("abc", 1));
});
await Task.Delay(250);
// assert
Assert.Collection(
updated,
item =>
{
Assert.Equal("abc", item.Foo);
Assert.Equal(1, item.Bar);
});
Assert.Equal(1ul, version);
}
public void UpdateEntity()
{
// arrange
var entityStore = new EntityStore();
var entityId = new EntityId(nameof(MockEntity), 1);
IReadOnlyList <MockEntity> updated = Array.Empty <MockEntity>();
ulong version = 0;
entityStore.Watch().Subscribe(update =>
{
updated = entityStore.GetEntities <MockEntity>(update.UpdatedEntityIds);
version = update.Version;
});
// act
using (entityStore.BeginUpdate())
{
MockEntity entity = entityStore.GetOrCreate <MockEntity>(entityId);
entity.Foo = "abc";
entity.Bar = 1;
}
// assert
Assert.Collection(
updated,
item =>
{
Assert.Equal("abc", item.Foo);
Assert.Equal(1, item.Bar);
});
Assert.Equal(1ul, version);
}
public async Task EnsureUpdatesAreExecutedOneAfterTheOther()
{
// arrange
var entityStore = new EntityStore();
var entityId = new EntityId(nameof(MockEntity), 1);
List <string> updated = new();
ulong version = 0;
entityStore.Watch().Subscribe(update =>
{
updated.Add(
entityStore.GetEntities <MockEntity>(update.UpdatedEntityIds).Single().Foo !);
version = update.Version;
});
// act
Task task1 = BeginUpdate(entityStore, "abc");
Task task2 = BeginUpdate(entityStore, "def");
await Task.WhenAll(task1, task2);
// assert
Assert.Collection(
updated,
item =>
{
Assert.Equal("abc", item);
},
item =>
{
Assert.Equal("def", item);
});
Assert.Equal(2ul, version);
Task BeginUpdate(IEntityStore entityStore, string foo)
{
IEntityUpdateSession session = entityStore.BeginUpdate();
return(Task.Run(async() =>
{
await Task.Delay(50);
MockEntity entity = entityStore.GetOrCreate <MockEntity>(entityId);
entity.Foo = foo;
session.Dispose();
}));
}
}