feat: 100% coverage in tests

(again)

Author: jtakalai

test/DATAv2onPolygon-test.js

@@ -25,4 +25,22 @@ describe("DATAv2onPolygon", () => {
         await token.deployed()
         await expect(token.connect(another).deposit(another.address, parseEther("1").toHexString())).to.be.revertedWith("error_onlyBridge")
     })
+
+    it("withdraw burns tokens", async () => {
+        const [bridge, user] = await hardhatEthers.getSigners()
+        const DATAv2onPolygon = await hardhatEthers.getContractFactory("DATAv2onPolygon")
+        const token = await DATAv2onPolygon.deploy(bridge.address)
+        await token.deployed()
+
+        expect((await token.balanceOf(user.address)).toString()).to.equal("0")
+        const amountWei = parseEther("1")
+        const amountBytes = hexZeroPad(amountWei, 32)
+        await expect(token.connect(bridge).deposit(user.address, amountBytes)).to.emit(token, "Transfer(address,address,uint256,bytes)")
+        expect((await token.balanceOf(user.address)).toString()).to.equal(amountWei.toString())
+
+        await expect(token.connect(user).withdraw(parseEther("1"))).to.emit(token, "Transfer(address,address,uint256)")
+            .withArgs(user.address, "0x0000000000000000000000000000000000000000", amountWei.toHexString())
+
+        expect((await token.balanceOf(user.address)).toString()).to.equal("0")
+    })
 })