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56 lines
1.1 KiB
56 lines
1.1 KiB
import FSM from "./fsm.mjs";
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import assert from "assert";
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const add_test = () => {
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console.log("Additional function call on state transition passed.");
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}
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class TestMachine {
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constructor(data) {
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console.log("DATA IS", data);
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this.data = data;
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}
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async open(state, inc) {
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switch(state) {
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case "START":
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console.log("THIS", this);
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this.data.count = this.data.count + inc;
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return "OPEN";
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default:
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return "ERROR";
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}
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}
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close(state, inc) {
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switch(state) {
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case "OPEN":
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this.data.count = this.data.count + inc;
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return ["CLOSED", add_test];
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default:
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return "ERROR";
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}
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}
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}
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let data = {count: 0};
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let events = new TestMachine(data);
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let fsm1 = new FSM(data, events);
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fsm1.onTransition((fsm) => {
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console.log("On transition: ", fsm.state);
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});
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await fsm1.do('open', 3);
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assert(fsm1.state === "OPEN");
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assert(data.count === 3);
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await fsm1.do('close', 4);
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assert(fsm1.state === "CLOSED");
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assert(data.count === 7);
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// test the errors
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await fsm1.do('open');
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assert(fsm1.state === "ERROR");
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assert(data.count === 7); // still 2 after error
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