Fix .gitignore: stop tracking ignored files

2026-05-27 03:36:32 +00:00 · 2025-07-27 10:39:02 +05:30
parent b42747e9a3
commit 3a87ef0576
625 changed files with 88566 additions and 63 deletions
@@ -0,0 +1,103 @@
+/* eslint-disable */
+
+const { BN, constants, expectRevert, time } = require('@openzeppelin/test-helpers');
+const { expect } = require('chai');
+const { MAX_UINT256 } = constants;
+
+const { fromRpcSig } = require('ethereumjs-util');
+const ethSigUtil = require('eth-sig-util');
+const Wallet = require('ethereumjs-wallet').default;
+
+const ERC20Permit = artifacts.require('$ERC20Permit');
+
+const { Permit, getDomain, domainType, domainSeparator } = require('../../../helpers/eip712');
+const { getChainId } = require('../../../helpers/chainid');
+
+contract('ERC20Permit', function (accounts) {
+  const [initialHolder, spender] = accounts;
+
+  const name = 'My Token';
+  const symbol = 'MTKN';
+  const version = '1';
+
+  const initialSupply = new BN(100);
+
+  beforeEach(async function () {
+    this.chainId = await getChainId();
+
+    this.token = await ERC20Permit.new(name, symbol, name);
+    await this.token.$_mint(initialHolder, initialSupply);
+  });
+
+  it('initial nonce is 0', async function () {
+    expect(await this.token.nonces(initialHolder)).to.be.bignumber.equal('0');
+  });
+
+  it('domain separator', async function () {
+    expect(await this.token.DOMAIN_SEPARATOR()).to.equal(await getDomain(this.token).then(domainSeparator));
+  });
+
+  describe('permit', function () {
+    const wallet = Wallet.generate();
+
+    const owner = wallet.getAddressString();
+    const value = new BN(42);
+    const nonce = 0;
+    const maxDeadline = MAX_UINT256;
+
+    const buildData = (contract, deadline = maxDeadline) =>
+      getDomain(contract).then(domain => ({
+        primaryType: 'Permit',
+        types: { EIP712Domain: domainType(domain), Permit },
+        domain,
+        message: { owner, spender, value, nonce, deadline },
+      }));
+
+    it('accepts owner signature', async function () {
+      const { v, r, s } = await buildData(this.token)
+        .then(data => ethSigUtil.signTypedMessage(wallet.getPrivateKey(), { data }))
+        .then(fromRpcSig);
+
+      await this.token.permit(owner, spender, value, maxDeadline, v, r, s);
+
+      expect(await this.token.nonces(owner)).to.be.bignumber.equal('1');
+      expect(await this.token.allowance(owner, spender)).to.be.bignumber.equal(value);
+    });
+
+    it('rejects reused signature', async function () {
+      const { v, r, s } = await buildData(this.token)
+        .then(data => ethSigUtil.signTypedMessage(wallet.getPrivateKey(), { data }))
+        .then(fromRpcSig);
+
+      await this.token.permit(owner, spender, value, maxDeadline, v, r, s);
+
+      await expectRevert(
+        this.token.permit(owner, spender, value, maxDeadline, v, r, s),
+        'ERC20Permit: invalid signature',
+      );
+    });
+
+    it('rejects other signature', async function () {
+      const otherWallet = Wallet.generate();
+
+      const { v, r, s } = await buildData(this.token)
+        .then(data => ethSigUtil.signTypedMessage(otherWallet.getPrivateKey(), { data }))
+        .then(fromRpcSig);
+
+      await expectRevert(
+        this.token.permit(owner, spender, value, maxDeadline, v, r, s),
+        'ERC20Permit: invalid signature',
+      );
+    });
+
+    it('rejects expired permit', async function () {
+      const deadline = (await time.latest()) - time.duration.weeks(1);
+
+      const { v, r, s } = await buildData(this.token, deadline)
+        .then(data => ethSigUtil.signTypedMessage(wallet.getPrivateKey(), { data }))
+        .then(fromRpcSig);
+
+      await expectRevert(this.token.permit(owner, spender, value, deadline, v, r, s), 'ERC20Permit: expired deadline');
+    });
+  });
+});