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timcharper avatar timcharper commented on May 16, 2024

this is a terrible workaround that works:

import { State, getState } from "jest-circus";

type GlobalKey = keyof typeof global;

let jestStateSymbol: GlobalKey | undefined;

function findStateSymbols(): GlobalKey[] {
  return Reflect.ownKeys(global).filter(
    (key) => key.toString() == "Symbol(JEST_STATE_SYMBOL)"
  ) as GlobalKey[];
}

/** jest-circus state handling is a clown town
 * See https://github.com/jestjs/jest/issues/15018 for more information
 *
 * This method is a work-around which grabs the correct state object
 */
export function getJestState(): State {
  // If we have successfully found state before, keep using the symbol.
  if (jestStateSymbol) return global[jestStateSymbol];

  /* there can be 0-2 state symbols:
     0: state not yet initialized
     1: only `describe` invocations has led to updated / accessed state, OR, getState was called by another module
     2: both `describe` and another module has accessed state via getState. */

  for (const symbol of findStateSymbols()) {
    const state: State | undefined = global[symbol];
    // undefined? keep looking
    if (!state) continue;
    // root block? likely the wrong one. Keep looking
    if (!state.currentDescribeBlock.parent) continue;
    // we found it? remember it going forward
    jestStateSymbol = symbol;
    return state;
  }
  // didn't find anything? Just return the root state (which getState always returns, because of the bug).
  return getState();
}

from jest.

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