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rewards-test.ts
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import { ethers } from 'hardhat';
import { defaultAssets, expect, exp, fastForward, makeProtocol, makeRewards, objectify, wait, event } from './helpers';
describe('CometRewards', () => {
describe('claim + supply', () => {
it('can construct and claim rewards for owner with upscale', async () => {
const {
comet,
governor,
tokens: { USDC, COMP },
users: [alice],
} = await makeProtocol({
baseMinForRewards: 10e6,
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await COMP.allocateTo(rewards.address, exp(86400, 18));
await USDC.allocateTo(alice.address, 10e6);
await USDC.connect(alice).approve(comet.address, 10e6);
// supply once
await comet.connect(alice).supply(USDC.address, 10e6);
await fastForward(86400);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
const txn = await wait(rewards.claim(comet.address, alice.address, true));
expect(await COMP.balanceOf(alice.address)).to.be.equal(exp(86400, 18));
// Note: First event is an ERC20 Transfer event
expect(event(txn, 1)).to.be.deep.equal({
RewardClaimed: {
src: alice.address,
recipient: alice.address,
token: COMP.address,
amount: exp(86400, 18),
}
});
});
it('can construct and claim rewards for owner with downscale', async () => {
const {
comet,
governor,
tokens: { USDC, COMP },
users: [alice],
} = await makeProtocol({
assets: defaultAssets({}, {
COMP: { decimals: 5 }
})
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await COMP.allocateTo(rewards.address, exp(86400, 5));
await USDC.allocateTo(alice.address, 10e6);
await USDC.connect(alice).approve(comet.address, 10e6);
// supply once
await comet.connect(alice).supply(USDC.address, 10e6);
await fastForward(86400);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
const txn = await wait(rewards.claim(comet.address, alice.address, true));
expect(await COMP.balanceOf(alice.address)).to.be.equal(exp(86400, 5));
// Note: First event is an ERC20 Transfer event
expect(event(txn, 1)).to.be.deep.equal({
RewardClaimed: {
src: alice.address,
recipient: alice.address,
token: COMP.address,
amount: exp(86400, 5),
}
});
});
it('can construct and claim rewards for owner with same scale', async () => {
const {
comet,
governor,
tokens: { USDC, COMP },
users: [alice],
} = await makeProtocol({
assets: defaultAssets({}, {
COMP: { decimals: 6 }
})
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await COMP.allocateTo(rewards.address, exp(86400, 6));
await USDC.allocateTo(alice.address, 10e6);
await USDC.connect(alice).approve(comet.address, 10e6);
// supply once
await comet.connect(alice).supply(USDC.address, 10e6);
await fastForward(86400);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
const txn = await wait(rewards.claim(comet.address, alice.address, true));
expect(await COMP.balanceOf(alice.address)).to.be.equal(exp(86400, 6));
// Note: First event is an ERC20 Transfer event
expect(event(txn, 1)).to.be.deep.equal({
RewardClaimed: {
src: alice.address,
recipient: alice.address,
token: COMP.address,
amount: exp(86400, 6),
}
});
});
it('does not overpay when claiming more than once', async () => {
const {
comet,
governor,
tokens: { USDC, COMP },
users: [alice],
} = await makeProtocol({
baseMinForRewards: 10e6,
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await COMP.allocateTo(rewards.address, exp(864000, 18));
await USDC.allocateTo(alice.address, 10e6);
await USDC.connect(alice).approve(comet.address, 10e6);
// supply once
await comet.connect(alice).supply(USDC.address, 10e6);
await fastForward(86400);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
const _tx0 = await wait(rewards.claim(comet.address, alice.address, true));
const _tx1 = await wait(rewards.claim(comet.address, alice.address, false));
expect(await COMP.balanceOf(alice.address)).to.be.equal(exp(86400, 18));
});
it('fails if comet instance is already configured', async () => {
const {
comet,
governor,
tokens: { COMP },
} = await makeProtocol({
baseMinForRewards: 10e6,
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
await expect(
rewards.setRewardConfig(comet.address, COMP.address)
).to.be.revertedWith(`custom error 'AlreadyConfigured("${comet.address}")`);
});
it('fails if comet instance is not configured', async () => {
const {
comet,
governor,
users: [alice],
} = await makeProtocol();
const { rewards } = await makeRewards({ governor, configs: [] });
await expect(
rewards
.claim(comet.address, alice.address, true)
).to.be.revertedWith(`custom error 'NotSupported("${comet.address}")`);
});
it('fails if not enough rewards in the pool to transfer', async () => {
const {
comet,
governor,
tokens: { USDC, COMP },
users: [alice],
} = await makeProtocol({
baseMinForRewards: 10e6,
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await USDC.allocateTo(alice.address, 10e6);
await USDC.connect(alice).approve(comet.address, 10e6);
// supply once
await comet.connect(alice).supply(USDC.address, 10e6);
await expect(
rewards
.claim(comet.address, alice.address, true)
).to.be.revertedWith('ERC20: transfer amount exceeds balance');
});
});
describe('claimTo + borrow', () => {
it('can construct and claim rewards to target with upscale', async () => {
const {
comet,
governor,
tokens: { USDC, COMP, WBTC },
users: [alice, bob],
} = await makeProtocol({
baseMinForRewards: exp(10, 6),
baseTrackingBorrowSpeed: exp(2, 15)
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await COMP.allocateTo(rewards.address, exp(86400 * 2, 18));
await USDC.allocateTo(comet.address, exp(1e6, 6));
await WBTC.allocateTo(alice.address, exp(1, 8));
await WBTC.connect(alice).approve(comet.address, exp(1, 8));
// allow manager, supply collateral, borrow
await comet.connect(alice).allow(bob.address, true);
await comet.connect(alice).supply(WBTC.address, exp(1, 8));
await comet.connect(alice).withdraw(USDC.address, exp(10, 6));
await fastForward(86400);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
expect(await USDC.balanceOf(alice.address)).to.be.equal(10e6);
expect(await comet.borrowBalanceOf(alice.address)).to.be.equal(10e6);
const tx = await wait(rewards.connect(bob).claimTo(comet.address, alice.address, bob.address, true));
expect(await COMP.balanceOf(bob.address)).to.be.equal(exp(86400 * 2, 18));
// Note: First event is an ERC20 Transfer event
expect(event(tx, 1)).to.be.deep.equal({
RewardClaimed: {
src: alice.address,
recipient: bob.address,
token: COMP.address,
amount: exp(86400 * 2, 18),
}
});
});
it('can construct and claim rewards to target with downscale', async () => {
const {
comet,
governor,
tokens: { USDC, COMP, WBTC },
users: [alice, bob],
} = await makeProtocol({
assets: defaultAssets({}, {
COMP: { decimals: 5 }
}),
baseMinForRewards: exp(10, 5),
baseTrackingBorrowSpeed: exp(2, 15)
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await COMP.allocateTo(rewards.address, exp(86400 * 2, 5));
await USDC.allocateTo(comet.address, exp(1e6, 6));
await WBTC.allocateTo(alice.address, exp(1, 8));
await WBTC.connect(alice).approve(comet.address, exp(1, 8));
// allow manager, supply collateral, borrow
await comet.connect(alice).allow(bob.address, true);
await comet.connect(alice).supply(WBTC.address, exp(1, 8));
await comet.connect(alice).withdraw(USDC.address, exp(10, 6));
await fastForward(86400);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
expect(await USDC.balanceOf(alice.address)).to.be.equal(10e6);
expect(await comet.borrowBalanceOf(alice.address)).to.be.equal(10e6);
const _tx = await wait(rewards.connect(bob).claimTo(comet.address, alice.address, bob.address, true));
expect(await COMP.balanceOf(bob.address)).to.be.equal(exp(86400 * 2, 5));
});
it('can construct and claim rewards to target with same scale', async () => {
const {
comet,
governor,
tokens: { USDC, COMP, WBTC },
users: [alice, bob],
} = await makeProtocol({
assets: defaultAssets({}, {
COMP: { decimals: 6 }
}),
baseMinForRewards: exp(10, 6),
baseTrackingBorrowSpeed: exp(2, 15)
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await COMP.allocateTo(rewards.address, exp(86400 * 2, 6));
await USDC.allocateTo(comet.address, exp(1e6, 6));
await WBTC.allocateTo(alice.address, exp(1, 8));
await WBTC.connect(alice).approve(comet.address, exp(1, 8));
// allow manager, supply collateral, borrow
await comet.connect(alice).allow(bob.address, true);
await comet.connect(alice).supply(WBTC.address, exp(1, 8));
await comet.connect(alice).withdraw(USDC.address, exp(10, 6));
await fastForward(86400);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
expect(await USDC.balanceOf(alice.address)).to.be.equal(10e6);
expect(await comet.borrowBalanceOf(alice.address)).to.be.equal(10e6);
const _tx = await wait(rewards.connect(bob).claimTo(comet.address, alice.address, bob.address, true));
expect(await COMP.balanceOf(bob.address)).to.be.equal(exp(86400 * 2, 6));
});
it('does not allow claiming more than once', async () => {
const {
comet,
governor,
tokens: { USDC, COMP, WBTC },
users: [alice, bob],
} = await makeProtocol({
baseMinForRewards: exp(10, 6),
baseTrackingBorrowSpeed: exp(2, 15)
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await COMP.allocateTo(rewards.address, exp(86400 * 2, 18));
await USDC.allocateTo(comet.address, exp(1e6, 6));
await WBTC.allocateTo(alice.address, exp(1, 8));
await WBTC.connect(alice).approve(comet.address, exp(1, 8));
// allow manager, supply collateral, borrow
await comet.connect(alice).allow(bob.address, true);
await comet.connect(alice).supply(WBTC.address, exp(1, 8));
await comet.connect(alice).withdraw(USDC.address, exp(10, 6));
await fastForward(86400);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
expect(await USDC.balanceOf(alice.address)).to.be.equal(10e6);
expect(await comet.borrowBalanceOf(alice.address)).to.be.equal(10e6);
const _tx0 = await wait(rewards.connect(bob).claimTo(comet.address, alice.address, bob.address, true));
const _tx1 = await wait(rewards.connect(bob).claimTo(comet.address, alice.address, bob.address, false));
expect(await COMP.balanceOf(bob.address)).to.be.equal(exp(86400 * 2, 18));
});
it('fails if comet instance is not configured', async () => {
const {
comet,
governor,
users: [alice, bob],
} = await makeProtocol();
const { rewards } = await makeRewards({ governor, configs: [] });
await comet.connect(alice).allow(bob.address, true);
await expect(
rewards
.connect(bob)
.claim(comet.address, alice.address, true)
).to.be.revertedWith(`custom error 'NotSupported("${comet.address}")`);
});
it('fails if not enough rewards in the pool to transfer', async () => {
const {
comet,
governor,
tokens: { USDC, COMP, WBTC },
users: [alice, bob],
} = await makeProtocol({
baseMinForRewards: 10e6,
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await USDC.allocateTo(comet.address, exp(1e6, 6));
await WBTC.allocateTo(alice.address, exp(1, 8));
await WBTC.connect(alice).approve(comet.address, exp(1, 8));
// allow manager, supply collateral, borrow
await comet.connect(alice).allow(bob.address, true);
await comet.connect(alice).supply(WBTC.address, exp(1, 8));
await comet.connect(alice).withdraw(USDC.address, exp(10, 6));
await expect(
rewards
.connect(bob)
.claimTo(comet.address, alice.address, bob.address, true)
).to.be.revertedWith('ERC20: transfer amount exceeds balance');
});
it('fails if caller is not permitted to claim rewards for owner', async () => {
const {
comet,
governor,
tokens: { COMP },
users: [alice],
} = await makeProtocol({
baseMinForRewards: exp(10, 6),
baseTrackingBorrowSpeed: exp(2, 15)
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
await expect(
rewards
.claimTo(comet.address, alice.address, governor.address, true)
).to.be.revertedWith(`custom error 'NotPermitted("${governor.address}")'`);
});
});
describe('getRewardOwed', () => {
it('can construct and calculate rewards for owner with upscale', async () => {
const {
comet,
governor,
tokens: { USDC, COMP },
users: [alice],
} = await makeProtocol({
baseMinForRewards: 10e6,
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await COMP.allocateTo(rewards.address, exp(86400, 18));
await USDC.allocateTo(alice.address, 10e6);
await USDC.connect(alice).approve(comet.address, 10e6);
// supply once
await comet.connect(alice).supply(USDC.address, 10e6);
await fastForward(86400);
await ethers.provider.send('evm_mine', []);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
const { token, owed } = await rewards.callStatic.getRewardOwed(comet.address, alice.address);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
expect(token).to.be.equal(COMP.address);
expect(owed).to.be.equal(exp(86400, 18));
});
it('can construct and calculate rewards for owner with downscale', async () => {
const {
comet,
governor,
tokens: { USDC, COMP },
users: [alice],
} = await makeProtocol({
assets: defaultAssets({}, {
COMP: { decimals: 5 }
})
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await COMP.allocateTo(rewards.address, exp(86400, 5));
await USDC.allocateTo(alice.address, 10e6);
await USDC.connect(alice).approve(comet.address, 10e6);
// supply once
await comet.connect(alice).supply(USDC.address, 10e6);
await fastForward(86400);
await ethers.provider.send('evm_mine', []);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
const { token, owed } = await rewards.callStatic.getRewardOwed(comet.address, alice.address);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
expect(token).to.be.equal(COMP.address);
expect(owed).to.be.equal(exp(86400, 5));
});
it('can construct and calculate rewards for owner with same scale', async () => {
const {
comet,
governor,
tokens: { USDC, COMP },
users: [alice],
} = await makeProtocol({
assets: defaultAssets({}, {
COMP: { decimals: 6 }
})
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await COMP.allocateTo(rewards.address, exp(86400, 6));
await USDC.allocateTo(alice.address, 10e6);
await USDC.connect(alice).approve(comet.address, 10e6);
// supply once
await comet.connect(alice).supply(USDC.address, 10e6);
await fastForward(86400);
await ethers.provider.send('evm_mine', []);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
const { token, owed } = await rewards.callStatic.getRewardOwed(comet.address, alice.address);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
expect(token).to.be.equal(COMP.address);
expect(owed).to.be.equal(exp(86400, 6));
});
it('returns 0 owed if user already claimed', async () => {
const {
comet,
governor,
tokens: { USDC, COMP },
users: [alice],
} = await makeProtocol({
baseMinForRewards: 10e6,
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate and approve transfers
await COMP.allocateTo(rewards.address, exp(864000, 18));
await USDC.allocateTo(alice.address, 10e6);
await USDC.connect(alice).approve(comet.address, 10e6);
// supply once
await comet.connect(alice).supply(USDC.address, 10e6);
await fastForward(86400);
expect(await COMP.balanceOf(alice.address)).to.be.equal(0);
const _tx0 = await wait(rewards.claim(comet.address, alice.address, true));
const { token, owed } = await rewards.callStatic.getRewardOwed(comet.address, alice.address);
expect(await COMP.balanceOf(alice.address)).to.be.equal(exp(86400, 18));
expect(token).to.be.equal(COMP.address);
expect(owed).to.be.equal(0);
});
it('fails if comet instance is not configured', async () => {
const {
comet,
governor,
users: [alice],
} = await makeProtocol();
const { rewards } = await makeRewards({ governor, configs: [] });
await expect(
rewards
.getRewardOwed(comet.address, alice.address)
).to.be.revertedWith(`custom error 'NotSupported("${comet.address}")`);
});
});
describe('setRewardsConfig', () => {
it('allows governor to set rewards token with upscale', async () => {
const {
comet,
governor,
tokens: { COMP },
} = await makeProtocol();
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
expect(objectify(await rewards.rewardConfig(comet.address))).to.be.deep.equal({
token: COMP.address,
rescaleFactor: exp(1, 12),
shouldUpscale: true
});
});
it('allows governor to set rewards token with downscale', async () => {
const {
comet,
governor,
tokens: { COMP },
} = await makeProtocol({
assets: defaultAssets({}, {
COMP: { decimals: 5 }
})
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
expect(objectify(await rewards.rewardConfig(comet.address))).to.be.deep.equal({
token: COMP.address,
rescaleFactor: 10n,
shouldUpscale: false
});
});
it('allows governor to set rewards token with same scale', async () => {
const {
comet,
governor,
tokens: { COMP },
} = await makeProtocol({
assets: defaultAssets({}, {
COMP: { decimals: 6 }
})
});
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
expect(objectify(await rewards.rewardConfig(comet.address))).to.be.deep.equal({
token: COMP.address,
rescaleFactor: 1n,
shouldUpscale: true
});
});
it('does not allow anyone but governor to set config', async () => {
const {
comet,
governor,
tokens: { COMP },
users: [alice],
} = await makeProtocol();
const { rewards } = await makeRewards({ governor, configs: [] });
expect(await rewards.governor()).to.be.equal(governor.address);
await expect(
rewards
.connect(alice)
.setRewardConfig(comet.address, COMP.address)
).to.be.revertedWith(`custom error 'NotPermitted("${alice.address}")'`);
});
// XXX multiple configs
});
describe('withdrawToken', () => {
it('allows governor to withdraw funds added', async () => {
const {
comet,
governor,
tokens: { COMP },
users: [alice],
} = await makeProtocol();
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate
const _a0 = await COMP.allocateTo(rewards.address, 2e6);
const _tx = await wait(rewards.withdrawToken(COMP.address, alice.address, 2e6));
expect(await COMP.balanceOf(alice.address)).to.be.equal(2e6);
});
it('does not allow anyone but governor to withdraw', async () => {
const {
comet,
governor,
tokens: { COMP },
users: [alice],
} = await makeProtocol();
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
// allocate
const _a0 = await COMP.allocateTo(rewards.address, 2e6);
await expect(
rewards
.connect(alice)
.withdrawToken(COMP.address, alice.address, 2e6)
).to.be.revertedWith(`custom error 'NotPermitted("${alice.address}")'`);
});
});
describe('transferGovernor', () => {
it('allows governor to transfer governor', async () => {
const {
comet,
governor,
tokens: { COMP },
users: [alice],
} = await makeProtocol();
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
const txn = await wait(rewards.transferGovernor(alice.address));
expect(await rewards.governor()).to.be.equal(alice.address);
expect(event(txn, 0)).to.be.deep.equal({
GovernorTransferred: {
oldGovernor: governor.address,
newGovernor: alice.address,
}
});
});
it('does not allow anyone but governor to transfer governor', async () => {
const {
comet,
governor,
tokens: { COMP },
users: [alice],
} = await makeProtocol();
const { rewards } = await makeRewards({ governor, configs: [[comet, COMP]] });
await expect(
rewards
.connect(alice)
.transferGovernor(alice.address)
).to.be.revertedWith(`custom error 'NotPermitted("${alice.address}")'`);
});
});
});