# All files / src/tx/applyTx checkValidatorJoin.js

100% Statements 9/9
100% Branches 10/10
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     /**
     * Copyright (c) 2018-present, Leap DAO (leapdao.org)
     *
     * This source code is licensed under the Mozilla Public License Version 2.0
     * found in the LICENSE file in the root directory of this source tree.
     */

    const { Type } = require('leap-core');

    module.exports = (state, tx) => {
      if (tx.type !== Type.VALIDATOR_JOIN) {
        throw new Error('validatorJoin tx expected');
      }

      if (
        state.slots[tx.options.slotId] &&
        tx.options.eventsCount !== state.slots[tx.options.slotId].eventsCount + 1
      ) {
        throw new Error('eventsCount expected to be x + 1');
      }

      if (!state.slots[tx.options.slotId] && tx.options.eventsCount !== 1) {
        throw new Error('eventsCount should start from 1');
      }

      state.slots[tx.options.slotId] = {
        id: tx.options.slotId,
        tenderKey: tx.options.tenderKey,
        signerAddr: tx.options.signerAddr,
        eventsCount: tx.options.eventsCount,
      };
    };