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author | fragosti <francesco.agosti93@gmail.com> | 2018-08-17 07:08:02 +0800 |
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committer | fragosti <francesco.agosti93@gmail.com> | 2018-08-17 07:08:02 +0800 |
commit | 89174cd63fb8c178c33d456d3b9d1d645ee07e91 (patch) | |
tree | 1d3b1932bdb4ff435d7a4d44ca443605d78b9bd0 /packages/order-utils/test/rate_utils_test.ts | |
parent | 8cb1d2a0af2df12e0b628a7b016a2b96a4a66860 (diff) | |
parent | d0d6a6a500cf8bbaf5da144490056d0275675eb3 (diff) | |
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Merge branch 'development' of https://github.com/0xProject/0x-monorepo into feature/connect/sra-api-v2
Diffstat (limited to 'packages/order-utils/test/rate_utils_test.ts')
-rw-r--r-- | packages/order-utils/test/rate_utils_test.ts | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/packages/order-utils/test/rate_utils_test.ts b/packages/order-utils/test/rate_utils_test.ts new file mode 100644 index 000000000..2e299c209 --- /dev/null +++ b/packages/order-utils/test/rate_utils_test.ts @@ -0,0 +1,55 @@ +import { BigNumber } from '@0xproject/utils'; +import * as chai from 'chai'; +import 'mocha'; + +import { rateUtils } from '../src'; + +import { chaiSetup } from './utils/chai_setup'; +import { testOrderFactory } from './utils/test_order_factory'; + +chaiSetup.configure(); +const expect = chai.expect; + +describe('rateUtils', () => { + const testOrder = testOrderFactory.generateTestSignedOrder({ + makerAssetAmount: new BigNumber(100), + takerAssetAmount: new BigNumber(100), + takerFee: new BigNumber(20), + }); + describe('#getFeeAdjustedRateOfOrder', () => { + it('throws when feeRate is less than zero', async () => { + const feeRate = new BigNumber(-1); + expect(() => rateUtils.getFeeAdjustedRateOfOrder(testOrder, feeRate)).to.throw( + 'Expected feeRate: -1 to be greater than or equal to 0', + ); + }); + it('correctly calculates fee adjusted rate when feeRate is provided', async () => { + const feeRate = new BigNumber(2); // ZRX costs 2 units of takerAsset per 1 unit of ZRX + const feeAdjustedRate = rateUtils.getFeeAdjustedRateOfOrder(testOrder, feeRate); + // the order actually takes 100 + (2 * 20) takerAsset units to fill 100 units of makerAsset + expect(feeAdjustedRate).to.bignumber.equal(new BigNumber(1.4)); + }); + it('correctly calculates fee adjusted rate when no feeRate is provided', async () => { + const feeAdjustedRate = rateUtils.getFeeAdjustedRateOfOrder(testOrder); + // because no feeRate was provided we just assume 0 fees + // the order actually takes 100 takerAsset units to fill 100 units of makerAsset + expect(feeAdjustedRate).to.bignumber.equal(new BigNumber(1)); + }); + }); + describe('#getFeeAdjustedRateOfFeeOrder', () => { + it('throws when takerFee exceeds makerAssetAmount', async () => { + const badOrder = testOrderFactory.generateTestSignedOrder({ + makerAssetAmount: new BigNumber(100), + takerFee: new BigNumber(101), + }); + expect(() => rateUtils.getFeeAdjustedRateOfFeeOrder(badOrder)).to.throw( + 'Expected takerFee: "101" to be less than makerAssetAmount: "100"', + ); + }); + it('correctly calculates fee adjusted rate', async () => { + const feeAdjustedRate = rateUtils.getFeeAdjustedRateOfFeeOrder(testOrder); + // the order actually takes 100 takerAsset units to fill (100 - 20) units of makerAsset + expect(feeAdjustedRate).to.bignumber.equal(new BigNumber(1.25)); + }); + }); +}); |