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Merged
merged 1 commit into from
Sep 28, 2025
+31 −31
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test(Burning): restore and enhance burn function tests for better cov… #117

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62 changes: 31 additions & 31 deletions test/MockDEVToken.ts
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Original file line number Diff line number Diff line change
@@ -1,34 +1,3 @@

describe("Burning", function () {
it("Should allow a user to burn their own tokens", async function () {
const { mockDEVToken, owner } = await loadFixture(deployMockDEVTokenFixture);
const burnAmount = parseEther("100");
const initialBalance = await mockDEVToken.read.balanceOf([
getAddress(owner.account.address),
]);
await mockDEVToken.write.burn([burnAmount]);
const finalBalance = await mockDEVToken.read.balanceOf([
getAddress(owner.account.address),
]);
expect(finalBalance).to.equal(initialBalance - burnAmount);
});

it("Should not allow burning zero tokens", async function () {
const { mockDEVToken } = await loadFixture(deployMockDEVTokenFixture);
await expect(
mockDEVToken.write.burn([0n])
).to.be.rejectedWith("ERC20: burn amount must be greater than zero");
});

it("Should not allow burning more tokens than balance", async function () {
const { mockDEVToken, otherAccount } = await loadFixture(deployMockDEVTokenFixture);
const burnAmount = parseEther("100");
// otherAccount has 0 tokens
await expect(
mockDEVToken.write.burn([burnAmount], { account: otherAccount.account })
).to.be.rejected;
});
});
import {
time,
loadFixture,
Expand All @@ -38,6 +7,37 @@ import hre from "hardhat";
import { getAddress, parseGwei, parseEther } from "viem";

describe("MockDEVToken", function () {

describe("Burning", function () {
it("Should allow a user to burn their own tokens", async function () {
const { mockDEVToken, owner } = await loadFixture(deployMockDEVTokenFixture);
const burnAmount = parseEther("100");
const initialBalance = await mockDEVToken.read.balanceOf([
getAddress(owner.account.address),
]);
await mockDEVToken.write.burn([burnAmount]);
const finalBalance = await mockDEVToken.read.balanceOf([
getAddress(owner.account.address),
]);
expect(finalBalance).to.equal(initialBalance - burnAmount);
});

it("Should not allow burning zero tokens", async function () {
const { mockDEVToken } = await loadFixture(deployMockDEVTokenFixture);
await expect(
mockDEVToken.write.burn([0n])
).to.be.rejectedWith("ERC20: burn amount must be greater than zero");
});

it("Should not allow burning more tokens than balance", async function () {
const { mockDEVToken, otherAccount } = await loadFixture(deployMockDEVTokenFixture);
const burnAmount = parseEther("100");
// otherAccount has 0 tokens
await expect(
mockDEVToken.write.burn([burnAmount], { account: otherAccount.account })
).to.be.rejected;
});
});
async function deployMockDEVTokenFixture() {
const [owner, otherAccount, thirdAccount] =
await hre.viem.getWalletClients();
Expand Down