public async Task SetAsyncTest() { var stateManager = new MockActorStateManager(); var keyMock = new Mock <IStateKey>(); keyMock.Setup(x => x.ToString()).Returns("TestName"); var state = new ActorArrayState <TestState>(stateManager, keyMock.Object, 1); var cts = new CancellationTokenSource(1000); await Assert.ThrowsAsync <IndexOutOfRangeException>(() => state.SetAsync(-1, new TestState(), cts.Token)); await Assert.ThrowsAsync <IndexOutOfRangeException>(() => state.SetAsync(1, new TestState(), cts.Token)); Assert.False(await stateManager.ContainsStateAsync("TestName:-1", cts.Token)); Assert.False(await stateManager.ContainsStateAsync("TestName:1", cts.Token)); var value = new TestState { Value = "A" }; await state.SetAsync(0, value, cts.Token); Assert.Equal(value, await stateManager.GetStateAsync <TestState>("TestName:0", cts.Token)); }