Migrate ERC20 extensions tests to ethers v6 (#4773)
Co-authored-by: Hadrien Croubois <hadrien.croubois@gmail.com> Co-authored-by: ernestognw <ernestognw@gmail.com>
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@ -6,12 +6,13 @@ const { shouldBehaveLikeERC20 } = require('../ERC20.behavior');
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const name = 'My Token';
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const symbol = 'MTKN';
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const decimals = 9n;
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const initialSupply = 100n;
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async function fixture() {
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const [initialHolder, recipient, anotherAccount] = await ethers.getSigners();
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const underlying = await ethers.deployContract('$ERC20DecimalsMock', [name, symbol, 9]);
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const underlying = await ethers.deployContract('$ERC20DecimalsMock', [name, symbol, decimals]);
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await underlying.$_mint(initialHolder, initialSupply);
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const token = await ethers.deployContract('$ERC20Wrapper', [`Wrapped ${name}`, `W${symbol}`, underlying]);
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@ -20,9 +21,6 @@ async function fixture() {
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}
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describe('ERC20Wrapper', function () {
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const name = 'My Token';
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const symbol = 'MTKN';
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beforeEach(async function () {
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Object.assign(this, await loadFixture(fixture));
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});
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@ -40,7 +38,7 @@ describe('ERC20Wrapper', function () {
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});
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it('has the same decimals as the underlying token', async function () {
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expect(await this.token.decimals()).to.be.equal(9n);
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expect(await this.token.decimals()).to.be.equal(decimals);
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});
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it('decimals default back to 18 if token has no metadata', async function () {
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@ -56,13 +54,13 @@ describe('ERC20Wrapper', function () {
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describe('deposit', function () {
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it('executes with approval', async function () {
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await this.underlying.connect(this.initialHolder).approve(this.token, initialSupply);
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const tx = await this.token.connect(this.initialHolder).depositFor(this.initialHolder, initialSupply);
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await expect(tx)
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.to.emit(this.underlying, 'Transfer')
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.withArgs(this.initialHolder.address, this.token.target, initialSupply)
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.to.emit(this.token, 'Transfer')
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.withArgs(ethers.ZeroAddress, this.initialHolder.address, initialSupply);
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await expect(tx).to.changeTokenBalances(
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this.underlying,
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[this.initialHolder, this.token],
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@ -79,6 +77,7 @@ describe('ERC20Wrapper', function () {
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it('reverts when inssuficient balance', async function () {
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await this.underlying.connect(this.initialHolder).approve(this.token, ethers.MaxUint256);
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await expect(this.token.connect(this.initialHolder).depositFor(this.initialHolder, ethers.MaxUint256))
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.to.be.revertedWithCustomError(this.underlying, 'ERC20InsufficientBalance')
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.withArgs(this.initialHolder.address, initialSupply, ethers.MaxUint256);
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@ -86,13 +85,13 @@ describe('ERC20Wrapper', function () {
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it('deposits to other account', async function () {
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await this.underlying.connect(this.initialHolder).approve(this.token, initialSupply);
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const tx = await this.token.connect(this.initialHolder).depositFor(this.recipient, initialSupply);
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await expect(tx)
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.to.emit(this.underlying, 'Transfer')
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.withArgs(this.initialHolder.address, this.token.target, initialSupply)
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.to.emit(this.token, 'Transfer')
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.withArgs(ethers.ZeroAddress, this.recipient.address, initialSupply);
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await expect(tx).to.changeTokenBalances(
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this.underlying,
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[this.initialHolder, this.token],
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@ -103,6 +102,7 @@ describe('ERC20Wrapper', function () {
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it('reverts minting to the wrapper contract', async function () {
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await this.underlying.connect(this.initialHolder).approve(this.token, ethers.MaxUint256);
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await expect(this.token.connect(this.initialHolder).depositFor(this.token, ethers.MaxUint256))
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.to.be.revertedWithCustomError(this.token, 'ERC20InvalidReceiver')
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.withArgs(this.token.target);
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@ -130,7 +130,6 @@ describe('ERC20Wrapper', function () {
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.withArgs(this.token.target, this.initialHolder.address, value)
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.to.emit(this.token, 'Transfer')
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.withArgs(this.initialHolder.address, ethers.ZeroAddress, value);
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await expect(tx).to.changeTokenBalances(this.underlying, [this.token, this.initialHolder], [-value, value]);
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await expect(tx).to.changeTokenBalance(this.token, this.initialHolder, -value);
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});
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@ -142,7 +141,6 @@ describe('ERC20Wrapper', function () {
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.withArgs(this.token.target, this.initialHolder.address, initialSupply)
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.to.emit(this.token, 'Transfer')
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.withArgs(this.initialHolder.address, ethers.ZeroAddress, initialSupply);
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await expect(tx).to.changeTokenBalances(
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this.underlying,
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[this.token, this.initialHolder],
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@ -158,7 +156,6 @@ describe('ERC20Wrapper', function () {
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.withArgs(this.token.target, this.recipient.address, initialSupply)
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.to.emit(this.token, 'Transfer')
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.withArgs(this.initialHolder.address, ethers.ZeroAddress, initialSupply);
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await expect(tx).to.changeTokenBalances(
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this.underlying,
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[this.token, this.initialHolder, this.recipient],
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@ -181,7 +178,6 @@ describe('ERC20Wrapper', function () {
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const tx = await this.token.$_recover(this.recipient);
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await expect(tx).to.emit(this.token, 'Transfer').withArgs(ethers.ZeroAddress, this.recipient.address, 0n);
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await expect(tx).to.changeTokenBalance(this.token, this.recipient, 0);
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});
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@ -192,7 +188,6 @@ describe('ERC20Wrapper', function () {
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await expect(tx)
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.to.emit(this.token, 'Transfer')
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.withArgs(ethers.ZeroAddress, this.recipient.address, initialSupply);
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await expect(tx).to.changeTokenBalance(this.token, this.recipient, initialSupply);
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});
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});
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