flowstate 0.7.2

Workflow runtime powered by finite state machines.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42

use flowstate::prelude::*;

#[derive(Workflow)]
#[flowstate(
    is_async = true,
    result = WorkflowResult,
    state_trait = BasicWorkflowState,
)]
struct BasicWorkflow<State> {
    #[state]
    _state: State,
}

#[derive(State)]
struct StateA;

#[async_state]
impl BasicWorkflowState for BasicWorkflow<StateA> {
    async fn next(self: Box<Self>) -> AsyncStaticTransition<WorkflowResult> {
        self.transition(StateB)
    }
}

#[derive(State)]
struct StateB;

#[async_state]
impl BasicWorkflowState for BasicWorkflow<StateB> {
    async fn next(self: Box<Self>) -> AsyncStaticTransition<WorkflowResult> {
        self.finish(WorkflowResult)
    }
}

#[derive(Debug, PartialEq)]
struct WorkflowResult;

#[tokio::test]
async fn test_basic_workflow_async() {
    let workflow = BasicWorkflow::new(StateA);
    let result = workflow.run().await;
    assert_eq!(result, WorkflowResult);
}