Bug: @xstate/test pathGenerator is not a function

[Osky772]

Description

.getPaths() doesn't work. https://stately.ai/docs/xstate/model-based-testing/quickstart

My package.json dependencies

"dependencies": {
    "@xstate/test": "^1.0.0-alpha.0",
    "xstate": "^4.38.2"
  },
  "devDependencies": {
    "@babel/core": "7.2.0",
    "parcel-bundler": "^1.6.1"
  }

script.js

import { createTestModel, createTestMachine } from "@xstate/test";

const machine = createTestMachine({
  id: "HUD",
  predictableActionArguments: true,

  initial: "one",

  states: {
    one: {
      on: {
        TWO: "two",
        THREE: "three"
      }
    },

    two: {
      on: {
        ONE: "one",
        THREE: "three"
      }
    },

    three: {
      on: {
        ONE: "one",
        TWO: "two"
      }
    }
  }
});

const model = createTestModel(machine);

console.log(".getPaths()");
console.log(model.getPaths().map((p) => p.description));

Expected result

.getPaths to work

Actual result

It does not work

Reproduction

https://github.com/Osky772/xstate-test-bug

Additional context

No response

[Osky772]

It doesn't work for any @alpha version of @xstate/test. But somehow in Codesandbox it works https://codesandbox.io/s/xstate-test-path-filtering-forked-fnmqtw?file=/src/index.js

[davidkpiano]

Can you try this with @xstate/test@beta?

[gnuyent]

Hi @davidkpiano, we are running into the same issue on @xstate/test@1.0.0-beta.4. Also, using the same example repo from above, we see the following TS errors (rename index.js to index.ts):

Type '{ on: { TWO: string; THREE: string; }; }' is missing the following properties from type 'TestStateNodeConfig<MachineContext, AnyEventObject>': type, history, onDone, entry, and 7 more.ts(2740)

[Osky772]

I've discovered a bug in the documentation. You should use getShortestPaths and not getPaths. I've read in the Changelog that getPath is an alias of the getShortestPaths so it works the same

[Osky772]

using getShortestPaths the problem no longer appears