git.delta.rocks / unique-network / refs/commits / 574fb6756b14

1//2// This file is subject to the terms and conditions defined in3// file 'LICENSE', which is part of this source code package.4//56import chai from 'chai';7import chaiAsPromised from 'chai-as-promised';8import {default as usingApi} from './substrate/substrate-api';910chai.use(chaiAsPromised);11const expect = chai.expect;1213describe('integration test: Inflation', () => {14  it('First year inflation is 10%', async () => {15    await usingApi(async (api) => {1617      // Start inflation on relay block 118      await api.tx.inflation.start_inflation(1);1920      const blockInterval = (api.consts.inflation.inflationBlockInterval).toBigInt();21      const totalIssuanceStart = (await api.query.inflation.startingYearTotalIssuance()).toBigInt();22      const blockInflation = (await api.query.inflation.blockInflation()).toBigInt();2324      const YEAR = 5259600n;  // 6-second block. Blocks in one year25      // const YEAR = 2629800n; // 12-second block. Blocks in one year2627      const totalExpectedInflation = totalIssuanceStart / 10n;28      const totalActualInflation = blockInflation * YEAR / blockInterval;2930      const tolerance = 0.00001; // Relative difference per year between theoretical and actual inflation31      const expectedInflation = totalExpectedInflation / totalActualInflation - 1n;3233      expect(Math.abs(Number(expectedInflation))).to.be.lessThanOrEqual(tolerance);34    });35  });3637});