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@0x/contracts-exchange-libs: Add complementary tests when rounding up and down behavior with isRoundingErrorFloor() and isRoundingerrorCeil().

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Lawrence Forman
2019-08-09 21:07:23 -04:00
parent e3aa76cd09
commit 18485dd456
2 changed files with 32 additions and 32 deletions
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32
contracts/exchange-libs/test/lib_math.ts
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@@ -299,19 +299,19 @@ blockchainTests('LibMath', env => {
});
describe('explicit tests', () => {
it('returns true for a rounding error', async () => {
const numerator = new BigNumber(1e3);
const denominator = new BigNumber(1e4);
const target = new BigNumber(333);
it('returns true when `numerator * target / denominator` produces an error >= 0.1%', async () => {
const numerator = new BigNumber(100);
const denominator = new BigNumber(102);
const target = new BigNumber(52);
// tslint:disable-next-line: boolean-naming
const actual = await libsContract.isRoundingErrorFloor.callAsync(numerator, denominator, target);
expect(actual).to.eq(true);
});
it('returns false for not a rounding error', async () => {
const numerator = new BigNumber(1e3);
const denominator = new BigNumber(1e4);
const target = new BigNumber(5e2);
it('returns false when `numerator * target / denominator` produces an error < 0.1%', async () => {
const numerator = new BigNumber(100);
const denominator = new BigNumber(101);
const target = new BigNumber(92);
// tslint:disable-next-line: boolean-naming
const actual = await libsContract.isRoundingErrorFloor.callAsync(numerator, denominator, target);
expect(actual).to.eq(false);
@@ -365,19 +365,19 @@ blockchainTests('LibMath', env => {
});
describe('explicit tests', () => {
it('returns true for a rounding error', async () => {
const numerator = new BigNumber(1e3);
const denominator = new BigNumber(1e4);
const target = new BigNumber(333);
it('returns true when `numerator * target / (denominator - 1)` produces an error >= 0.1%', async () => {
const numerator = new BigNumber(100);
const denominator = new BigNumber(101);
const target = new BigNumber(92);
// tslint:disable-next-line: boolean-naming
const actual = await libsContract.isRoundingErrorCeil.callAsync(numerator, denominator, target);
expect(actual).to.eq(true);
});
it('returns false for not a rounding error', async () => {
const numerator = new BigNumber(1e3);
const denominator = new BigNumber(1e4);
const target = new BigNumber(5e2);
it('returns false when `numerator * target / (denominator - 1)` produces an error < 0.1%', async () => {
const numerator = new BigNumber(100);
const denominator = new BigNumber(102);
const target = new BigNumber(52);
// tslint:disable-next-line: boolean-naming
const actual = await libsContract.isRoundingErrorCeil.callAsync(numerator, denominator, target);
expect(actual).to.eq(false);