@hyperlane-xyz/sdk/dist/token/TokenAmount.test.js

The official SDK for the Hyperlane Network

import { expect } from 'chai';
import { ethers } from 'ethers';
import { TestChainName, test2 } from '../consts/testChains.js';
import { Token } from './Token.js';
import { TokenAmount } from './TokenAmount.js';
import { TokenStandard } from './TokenStandard.js';
const token1 = new Token({
    chainName: TestChainName.test1,
    standard: TokenStandard.ERC20,
    addressOrDenom: ethers.constants.AddressZero,
    decimals: 4,
    symbol: 'FAKE',
    name: 'Fake Token',
});
const token2 = Token.FromChainMetadataNativeToken(test2);
describe('TokenAmount', () => {
    let tokenAmount1;
    let tokenAmount2;
    it('Constructs', () => {
        tokenAmount1 = new TokenAmount(123456789, token1);
        tokenAmount2 = new TokenAmount('1', token2);
        expect(!!tokenAmount1).to.eq(true);
        expect(!!tokenAmount2).to.eq(true);
    });
    it('Formats human readable string', () => {
        expect(tokenAmount1.getDecimalFormattedAmount()).to.eq(12345.6789);
        expect(tokenAmount2.getDecimalFormattedAmount()).to.eq(1e-18);
    });
    it('Does arithmetic', () => {
        expect(tokenAmount1.plus(1).amount).to.eq(123456790n);
        expect(tokenAmount2.minus(1).amount).to.eq(0n);
    });
    it('Checks equality', () => {
        expect(tokenAmount1.equals(tokenAmount2)).to.be.false;
        expect(tokenAmount1.equals(new TokenAmount(123456789n, token1))).to.true;
    });
});
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