100 lines
5.5 KiB
TypeScript
100 lines
5.5 KiB
TypeScript
import { BigNumber } from '@0x/utils';
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import { Web3Wrapper } from '@0x/web3-wrapper';
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import { ETH_DECIMALS } from '../../src/constants';
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import { format } from '../../src/util/format';
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const BIG_NUMBER_ONE = new BigNumber(1);
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const BIG_NUMBER_DECIMAL = new BigNumber(0.432414);
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const BIG_NUMBER_IRRATIONAL = new BigNumber(5.3014059295032);
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const ONE_ETH_IN_BASE_UNITS = Web3Wrapper.toBaseUnitAmount(BIG_NUMBER_ONE, ETH_DECIMALS);
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const DECIMAL_ETH_IN_BASE_UNITS = Web3Wrapper.toBaseUnitAmount(BIG_NUMBER_DECIMAL, ETH_DECIMALS);
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const IRRATIONAL_ETH_IN_BASE_UNITS = Web3Wrapper.toBaseUnitAmount(BIG_NUMBER_IRRATIONAL, ETH_DECIMALS);
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const BIG_NUMBER_FAKE_ETH_USD_PRICE = new BigNumber(2.534);
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describe('format', () => {
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describe('ethBaseAmount', () => {
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it('converts 1 ETH in base units to the string `1 ETH`', () => {
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expect(format.ethBaseUnitAmount(ONE_ETH_IN_BASE_UNITS)).toBe('1 ETH');
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});
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it('converts .432414 ETH in base units to the string `.4324 ETH`', () => {
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expect(format.ethBaseUnitAmount(DECIMAL_ETH_IN_BASE_UNITS)).toBe('0.4324 ETH');
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});
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it('converts 5.3014059295032 ETH in base units to the string `5.301 ETH`', () => {
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expect(format.ethBaseUnitAmount(IRRATIONAL_ETH_IN_BASE_UNITS)).toBe('5.301 ETH');
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});
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it('returns defaultText param when ethBaseAmount is not defined', () => {
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const defaultText = 'defaultText';
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expect(format.ethBaseUnitAmount(undefined, 4, defaultText)).toBe(defaultText);
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});
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it('it allows for configurable decimal places', () => {
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expect(format.ethBaseUnitAmount(DECIMAL_ETH_IN_BASE_UNITS, 2)).toBe('0.43 ETH');
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});
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});
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describe('ethUnitAmount', () => {
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it('converts BigNumber(1) to the string `1 ETH`', () => {
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expect(format.ethUnitAmount(BIG_NUMBER_ONE)).toBe('1 ETH');
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});
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it('converts BigNumer(.432414) to the string `.4324 ETH`', () => {
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expect(format.ethUnitAmount(BIG_NUMBER_DECIMAL)).toBe('0.4324 ETH');
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});
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it('converts BigNumber(5.3014059295032) to the string `5.301 ETH`', () => {
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expect(format.ethUnitAmount(BIG_NUMBER_IRRATIONAL)).toBe('5.301 ETH');
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});
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it('returns defaultText param when ethUnitAmount is not defined', () => {
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const defaultText = 'defaultText';
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expect(format.ethUnitAmount(undefined, 4, defaultText)).toBe(defaultText);
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expect(format.ethUnitAmount(BIG_NUMBER_ONE, 4, defaultText)).toBe('1 ETH');
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});
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it('it allows for configurable decimal places', () => {
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expect(format.ethUnitAmount(BIG_NUMBER_DECIMAL, 2)).toBe('0.43 ETH');
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});
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});
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describe('ethBaseAmountInUsd', () => {
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it('correctly formats 1 ETH to usd according to some price', () => {
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expect(format.ethBaseUnitAmountInUsd(ONE_ETH_IN_BASE_UNITS, BIG_NUMBER_FAKE_ETH_USD_PRICE)).toBe('$2.53');
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});
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it('correctly formats .432414 ETH to usd according to some price', () => {
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expect(format.ethBaseUnitAmountInUsd(DECIMAL_ETH_IN_BASE_UNITS, BIG_NUMBER_FAKE_ETH_USD_PRICE)).toBe(
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'$1.10',
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);
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});
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it('correctly formats 5.3014059295032 ETH to usd according to some price', () => {
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expect(format.ethBaseUnitAmountInUsd(IRRATIONAL_ETH_IN_BASE_UNITS, BIG_NUMBER_FAKE_ETH_USD_PRICE)).toBe(
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'$13.43',
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);
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});
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it('returns defaultText param when ethBaseAmountInUsd or ethUsdPrice is not defined', () => {
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const defaultText = 'defaultText';
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expect(format.ethBaseUnitAmountInUsd(undefined, undefined, 2, defaultText)).toBe(defaultText);
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expect(format.ethBaseUnitAmountInUsd(BIG_NUMBER_ONE, undefined, 2, defaultText)).toBe(defaultText);
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expect(format.ethBaseUnitAmountInUsd(undefined, BIG_NUMBER_ONE, 2, defaultText)).toBe(defaultText);
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});
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it('it allows for configurable decimal places', () => {
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expect(format.ethBaseUnitAmountInUsd(DECIMAL_ETH_IN_BASE_UNITS, BIG_NUMBER_FAKE_ETH_USD_PRICE, 4)).toBe(
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'$1.0957',
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);
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});
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});
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describe('ethUnitAmountInUsd', () => {
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it('correctly formats 1 ETH to usd according to some price', () => {
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expect(format.ethUnitAmountInUsd(BIG_NUMBER_ONE, BIG_NUMBER_FAKE_ETH_USD_PRICE)).toBe('$2.53');
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});
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it('correctly formats .432414 ETH to usd according to some price', () => {
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expect(format.ethUnitAmountInUsd(BIG_NUMBER_DECIMAL, BIG_NUMBER_FAKE_ETH_USD_PRICE)).toBe('$1.10');
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});
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it('correctly formats 5.3014059295032 ETH to usd according to some price', () => {
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expect(format.ethUnitAmountInUsd(BIG_NUMBER_IRRATIONAL, BIG_NUMBER_FAKE_ETH_USD_PRICE)).toBe('$13.43');
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});
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it('returns defaultText param when ethUnitAmountInUsd or ethUsdPrice is not defined', () => {
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const defaultText = 'defaultText';
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expect(format.ethUnitAmountInUsd(undefined, undefined, 2, defaultText)).toBe(defaultText);
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expect(format.ethUnitAmountInUsd(BIG_NUMBER_ONE, undefined, 2, defaultText)).toBe(defaultText);
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expect(format.ethUnitAmountInUsd(undefined, BIG_NUMBER_ONE, 2, defaultText)).toBe(defaultText);
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});
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it('it allows for configurable decimal places', () => {
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expect(format.ethUnitAmountInUsd(BIG_NUMBER_DECIMAL, BIG_NUMBER_FAKE_ETH_USD_PRICE, 4)).toBe('$1.0957');
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});
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});
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});
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