@indigo-labs/indigo-sdk/tests/interest-calculations.test.ts

Indigo SDK for interacting with Indigo endpoints via lucid-evolution

import { InterestOracleContract } from "../src/contracts/interest-oracle";
import { oneDay } from "../src/helpers/time-helpers";

describe('Interest Calculations', () => {
    describe('Calculate Unitary Interest', () => {
        it('Should calculate the unitary interest correctly, 0', () => {
            expect(
                InterestOracleContract.calculateUnitaryInterestSinceOracleLastUpdated(
                    oneDay * 6n,
                    {
                        unitaryInterest: 684_931_506_849_315n,
                        interestRate: 100_000n,
                        lastUpdated: oneDay * 5n
                    }
                )
            ).toBe(273_972_602_739_726n);
        });

        it('Should calculate the unitary interest correctly, 1', () => {
            expect(
                InterestOracleContract.calculateUnitaryInterestSinceOracleLastUpdated(
                    oneDay * 6n,
                    {
                        unitaryInterest: 0n,
                        interestRate: 50_000n,
                        lastUpdated: 0n
                    }
                )
            ).toBe(821_917_808_219_178n);
        });

        it('Should calculate the unitary interest correctly, 2', () => {
            expect(
                InterestOracleContract.calculateUnitaryInterestSinceOracleLastUpdated(
                    1n,
                    {
                        unitaryInterest: 0n,
                        interestRate: 1n,
                        lastUpdated: 0n
                    }
                )
            ).toBe(31n);
        });
    })

    describe('Calculate Accumulated Interest', () => {
        it('Should calculate the accumulated interest correctly, 0', () => {
            expect(
                InterestOracleContract.calculateAccruedInterest(
                    oneDay,
                    0n,
                    1_000_000n,
                    0n,
                    {
                        unitaryInterest: 0n,
                        interestRate: 50_000n,
                        lastUpdated: 0n
                    }
                )
            ).toBe(136n)
        });

        it('Should calculate the accumulated interest correctly, 1', () => {
            expect(
                InterestOracleContract.calculateAccruedInterest(
                    oneDay * 6n,
                    0n,
                    1_000_000n,
                    0n,
                    {
                        unitaryInterest: 684_931_506_849_315n,
                        interestRate: 100_000n,
                        lastUpdated: oneDay * 5n
                    }
                )
            ).toBe(684n + 273n)
        });

        it('Should calculate the accumulated interest correctly, 2', () => {
            expect(
                InterestOracleContract.calculateAccruedInterest(
                    oneDay * 17n,
                    0n,
                    1_000_000n,
                    0n,
                    {
                        unitaryInterest: 1_506_849_315_068_493n,
                        interestRate: 100_000n,
                        lastUpdated: oneDay * 15n
                    }
                )
            ).toBe(1506n + 547n)
        });

        it('Should calculate the accumulated interest correctly, 3', () => {
            expect(
                InterestOracleContract.calculateAccruedInterest(
                    oneDay * 17n,
                    410_958_904_109_589n,
                    1_000_000n,
                    oneDay * 3n,
                    {
                        unitaryInterest: 1_506_849_315_068_493n,
                        interestRate: 100_000n,
                        lastUpdated: oneDay * 15n
                    }
                )
            ).toBe(1095n + 547n)
        });

        it('Should calculate the accumulated interest correctly, 4', () => {
            expect(
                InterestOracleContract.calculateAccruedInterest(
                    oneDay * 17n,
                    767_123_287_671_232n,
                    1_000_000n,
                    oneDay * 6n,
                    {
                        unitaryInterest: 1_506_849_315_068_493n,
                        interestRate: 100_000n,
                        lastUpdated: oneDay * 15n
                    }
                )
            ).toBe(739n + 547n)
        });
        
        it('Should calculate the accumulated interest correctly, 5', () => {
            expect(
                InterestOracleContract.calculateAccruedInterest(
                    oneDay * 10n,
                    821_917_808_219_178n,
                    1_000_000n,
                    oneDay * 6n,
                    {
                        unitaryInterest: 0n,
                        interestRate: 50_000n,
                        lastUpdated: 0n
                    }
                )
            ).toBe(547n)
        });
    });
});