Method fail

packages/jest-snapshot/src/State.ts:316–327

(testName: string, _received: unknown, key?: string)

  }

  fail(testName: string, _received: unknown, key?: string): string {
    this._counters.set(testName, (this._counters.get(testName) || 0) + 1);
    const count = Number(this._counters.get(testName));

    if (!key) {
      key = testNameToKey(testName, count);
    }

    this._uncheckedKeys.delete(key);
    this.unmatched++;
    return key;
  }
}