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import { BigNumber } from '@0x/utils';
import { maybeBigNumberUtil } from '../../src/util/maybe_big_number';
const BIG_NUMBER_1 = new BigNumber('10.1');
const BIG_NUMBER_2 = new BigNumber('10.1');
const BIG_NUMBER_3 = new BigNumber('11.1');
describe('maybeBigNumberUtil', () => {
describe('stringToMaybeBigNumber', () => {
it('should return undefined if stringValue is NaN', () => {
expect(maybeBigNumberUtil.stringToMaybeBigNumber('NaN')).toEqual(undefined);
});
it('should return bignumber constructed with stringValue', () => {
const bn = maybeBigNumberUtil.stringToMaybeBigNumber('10.1');
if (!!bn) {
expect(bn.toString()).toEqual('10.1');
}
});
it('should return undefined if stringValue is not valid (i.e not numeric)', () => {
expect(maybeBigNumberUtil.stringToMaybeBigNumber('test')).toEqual(undefined);
});
});
describe('areMaybeBigNumbersEqual', () => {
it('should return true if val1 and val2 are equivalent BigNumber values', () => {
expect(maybeBigNumberUtil.areMaybeBigNumbersEqual(BIG_NUMBER_1, BIG_NUMBER_2)).toEqual(true);
});
it('should return true if val1 and val2 are both undefined', () => {
expect(maybeBigNumberUtil.areMaybeBigNumbersEqual(undefined, undefined)).toEqual(true);
});
it('should return false if either one val1 or val2 is undefined', () => {
expect(maybeBigNumberUtil.areMaybeBigNumbersEqual(BIG_NUMBER_1, undefined)).toEqual(false);
});
it('should return false if val1 and val2 are equivalent values BigNumber', () => {
expect(maybeBigNumberUtil.areMaybeBigNumbersEqual(BIG_NUMBER_1, BIG_NUMBER_3)).toEqual(false);
});
});
// this doesn't test coercing a pre v8.0.0 version of big number to desired version
describe('toMaybeBigNumber', () => {
it('should return BigNumber (>=v8.0.0) constructed with value if type is string', () => {
const bn = maybeBigNumberUtil.toMaybeBigNumber('10.1');
if (!!bn) {
expect(bn.toString()).toEqual('10.1');
}
});
it('should return undefined if value is NaN', () => {
expect(maybeBigNumberUtil.toMaybeBigNumber('NaN')).toEqual(undefined);
});
it('should return undefined if value as string is not valid (i.e not numeric)', () => {
expect(maybeBigNumberUtil.toMaybeBigNumber('test')).toEqual(undefined);
});
it('should return undefined if value as string is not valid (i.e not numeric)', () => {
expect(maybeBigNumberUtil.toMaybeBigNumber('test')).toEqual(undefined);
});
it('should return BigNumber (>=v8.0.0) when passed a value as BigNumber (>=v8.0.0)', () => {
const bn = maybeBigNumberUtil.toMaybeBigNumber(BIG_NUMBER_1);
expect(BigNumber.isBigNumber(bn)).toEqual(true);
});
it('should return undefined if value is not BigNumber or string', () => {
expect(maybeBigNumberUtil.toMaybeBigNumber(true)).toEqual(undefined);
});
});
});
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