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add unit tests for fiatConverter

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slowbackspace 2019-03-13 17:01:24 +01:00
parent 6ebf14f6aa
commit 56209f1dc9
2 changed files with 122 additions and 2 deletions
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114
src/utils/__tests__/fiatConverter.js Normal file
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@ -0,0 +1,114 @@
import BigNumber from 'bignumber.js';
import * as utils from '../fiatConverter';
describe('fiatConverter utils: toFiatCurrency', () => {
const ratesETH = {
network: 'eth',
rates: {
czk: 3007.1079886708517,
eos: 36.852136278995445,
eur: 117.13118845579191,
gbp: 100.43721437661289,
},
};
it('to existing fiat currency', () => {
expect(utils.toFiatCurrency('1', 'czk', ratesETH)).toBe('3007.11');
expect(utils.toFiatCurrency('0', 'czk', ratesETH)).toBe('0.00');
expect(utils.toFiatCurrency('1.00000000000', 'czk', ratesETH)).toBe('3007.11');
expect(utils.toFiatCurrency('0.12345678910111213', 'eur', ratesETH)).toBe('14.46');
});
it('to missing fiat currency', () => {
expect(utils.toFiatCurrency('1', 'usd', ratesETH)).toBe('');
expect(utils.toFiatCurrency('0', 'usd', ratesETH)).toBe('');
expect(utils.toFiatCurrency('1.00000000000', 'usd', ratesETH)).toBe('');
expect(utils.toFiatCurrency('0.12345678910111213', 'usd', ratesETH)).toBe('');
});
it('non-numeric amount to fiat currency', () => {
expect(utils.toFiatCurrency(undefined, 'czk', ratesETH)).toBe('');
expect(utils.toFiatCurrency(null, 'czk', ratesETH)).toBe('');
expect(utils.toFiatCurrency('12133.3131.3141.4', 'czk', ratesETH)).toBe('');
expect(utils.toFiatCurrency(BigNumber('nanbla'), 'czk', ratesETH)).toBe('');
});
it('with null/undefined/empty rates', () => {
expect(utils.toFiatCurrency('1', 'czk', {})).toBe('');
expect(utils.toFiatCurrency('1', 'czk', null)).toBe('');
expect(utils.toFiatCurrency('1', 'czk', undefined)).toBe('');
});
it('with null/undefined/empty currency', () => {
expect(utils.toFiatCurrency('1', {}, ratesETH)).toBe('');
expect(utils.toFiatCurrency('1', null, ratesETH)).toBe('');
expect(utils.toFiatCurrency('1', undefined, ratesETH)).toBe('');
});
});
describe('fiatConverter utils: fromFiatCurrency', () => {
const ratesETH = {
network: 'eth',
rates: {
czk: 3007.1079886708517,
eos: 36.852136278995445,
eur: 117.13118845579191,
gbp: 100.43721437661289,
},
};
const decimals = 18;
it('from existing fiat currency', () => {
expect(utils.fromFiatCurrency('3007.1079886708517', 'czk', ratesETH, decimals)).toBe(
'1.000000000000000000'
);
expect(utils.fromFiatCurrency('0', 'czk', ratesETH, decimals)).toBe('0.000000000000000000');
expect(utils.fromFiatCurrency('3007.1079886708517', 'czk', ratesETH, decimals)).toBe(
'1.000000000000000000'
);
expect(utils.fromFiatCurrency('117.13118845579191', 'eur', ratesETH, decimals)).toBe(
'1.000000000000000000'
);
});
it('from missing fiat currency', () => {
expect(utils.fromFiatCurrency('1', 'usd', ratesETH, decimals)).toBe('');
expect(utils.fromFiatCurrency('0', 'usd', ratesETH, decimals)).toBe('');
expect(utils.fromFiatCurrency('1.00000000000', 'usd', ratesETH, decimals)).toBe('');
expect(utils.fromFiatCurrency('0.12345678910111213', 'usd', ratesETH, decimals)).toBe('');
});
it('non-numeric amount to fiat currency', () => {
expect(utils.fromFiatCurrency(undefined, 'czk', ratesETH, decimals)).toBe('');
expect(utils.fromFiatCurrency(null, 'czk', ratesETH, decimals)).toBe('');
expect(utils.fromFiatCurrency('12133.3131.3141.4', 'czk', ratesETH, decimals)).toBe('');
expect(utils.fromFiatCurrency(BigNumber('nanbla'), 'czk', ratesETH, decimals)).toBe('');
});
it('with null/undefined/empty rates', () => {
expect(utils.fromFiatCurrency('1', 'czk', {}, decimals)).toBe('');
expect(utils.fromFiatCurrency('1', 'czk', null, decimals)).toBe('');
expect(utils.fromFiatCurrency('1', 'czk', undefined, decimals)).toBe('');
});
it('with null/undefined/empty currency', () => {
expect(utils.fromFiatCurrency('1', {}, ratesETH, decimals)).toBe('');
expect(utils.fromFiatCurrency('1', null, ratesETH, decimals)).toBe('');
expect(utils.fromFiatCurrency('1', undefined, ratesETH, decimals)).toBe('');
});
it('different decimals', () => {
expect(utils.fromFiatCurrency('3007.1079886708517', 'czk', ratesETH, 1)).toBe('1.0');
expect(utils.fromFiatCurrency('0', 'czk', ratesETH, 0)).toBe('0');
expect(utils.fromFiatCurrency('3007.1079886708517', 'czk', ratesETH, 5)).toBe('1.00000');
});
it('from fiat currency with comma decimal separator', () => {
expect(utils.fromFiatCurrency('3007,1079886708517', 'czk', ratesETH, decimals)).toBe(
'1.000000000000000000'
);
expect(utils.fromFiatCurrency('117,13118845579191', 'eur', ratesETH, decimals)).toBe(
'1.000000000000000000'
);
});
});

10
src/utils/fiatConverter.js
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@ -11,7 +11,10 @@ const toFiatCurrency = (amount, fiatCurrency, networkRates) => {
return '';
}
const formattedAmount = amount.replace(',', '.');
let formattedAmount = amount;
if (typeof amount === 'string') {
formattedAmount = amount.replace(',', '.');
}
let localAmount = BigNumber(formattedAmount).times(rate);
localAmount = localAmount.isNaN() ? '' : localAmount.toFixed(2);
@ -28,7 +31,10 @@ const fromFiatCurrency = (localAmount, fiatCurrency, networkRates, decimals) =>
return '';
}
const formattedLocalAmount = localAmount.replace(',', '.');
let formattedLocalAmount = localAmount;
if (typeof localAmount === 'string') {
formattedLocalAmount = localAmount.replace(',', '.');
}
let amount = BigNumber(formattedLocalAmount).div(rate);
amount = amount.isNaN() ? '' : amount.toFixed(decimals);