Error while running test , (Ownable Unauthorized Account)

[anasqurreshhi]

I am running into this error while running test in MY DscEngineTest , what could be the reason

error:

Ran 1 test for test/unit/DSCEngineTest.t.sol:DSCEngineTest
[FAIL: OwnableUnauthorizedAccount(0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266)] setUp() (gas: 0)
Suite result: FAILED. 0 passed; 1 failed; 0 skipped; finished in 2.25ms (0.00ns CPU time)

Ran 1 test suite in 14.03ms (2.25ms CPU time): 0 tests passed, 1 failed, 0 skipped (1 total tests)

Failing tests:
Encountered 1 failing test in test/unit/DSCEngineTest.t.sol:DSCEngineTest
[FAIL: OwnableUnauthorizedAccount(0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266)] setUp() (gas: 0)

test :

address public owner = makeAddr("owner");
    DeployDSC deployer;
    DecentralizedStableCoin dsc;
    DSCEngine dsce;
    HelperConfig config;
    address ethUsdPriceFeed;
    address weth;

    function setUp() external {
        deployer = new DeployDSC();

        (dsc, dsce, config) = deployer.run();
        (ethUsdPriceFeed,, weth,,) = config.activeNetworkConfig();
    }

    function testGetUsdValue() public {
        uint256 ethAmount = 15e18;
        uint256 expectedUsd = 30000e18;
        uint256 actualUsd = dsce.getUsdValue(weth, ethAmount);
        assertEq(expectedUsd, actualUsd);
    }
    ```
    

[PROWLERx15]

@anasqurreshhi can you share your DeployDsc contract?

[EngrPips]

@anasqurreshhi, run your test with the -vvvvv flag and share the stack trace of the test process.That will help us to better help you.

[anasqurreshhi]

Ran 1 test for test/unit/DSCEngineTest.t.sol:DSCEngineTest
[FAIL: OwnableUnauthorizedAccount(0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266)] setUp() (gas: 0)
Traces:
[15652337] DSCEngineTest::setUp()
├─ [7699523] → new DeployDSC@0x5615dEB798BB3E4dFa0139dFa1b3D433Cc23b72f
│ └─ ← [Return] 38335 bytes of code
├─ [7885596] DeployDSC::run()
│ ├─ [5765547] → new HelperConfig@0x104fBc016F4bb334D775a19E8A6510109AC63E00
│ │ ├─ [0] VM::startBroadcast()
│ │ │ └─ ← [Return]
│ │ ├─ [578290] → new MockV3Aggregator@0x34A1D3fff3958843C43aD80F30b94c510645C316
│ │ │ └─ ← [Return] 2109 bytes of code
│ │ ├─ [902664] → new ERC20Mock@0x90193C961A926261B756D1E5bb255e67ff9498A1
│ │ │ ├─ emit Transfer(from: 0x0000000000000000000000000000000000000000, to: DeployDSC: [0x5615dEB798BB3E4dFa0139dFa1b3D433Cc23b72f], value: 100000000000 [1e11])
│ │ │ └─ ← [Return] 4039 bytes of code
│ │ ├─ [0] VM::stopBroadcast()
│ │ │ └─ ← [Return]
│ │ ├─ [0] VM::startBroadcast()
│ │ │ └─ ← [Return]
│ │ ├─ [578290] → new MockV3Aggregator@0xA8452Ec99ce0C64f20701dB7dD3abDb607c00496
│ │ │ └─ ← [Return] 2109 bytes of code
│ │ ├─ [902664] → new ERC20Mock@0xBb2180ebd78ce97360503434eD37fcf4a1Df61c3
│ │ │ ├─ emit Transfer(from: 0x0000000000000000000000000000000000000000, to: DeployDSC: [0x5615dEB798BB3E4dFa0139dFa1b3D433Cc23b72f], value: 100000000000 [1e11])
│ │ │ └─ ← [Return] 4039 bytes of code
│ │ ├─ [0] VM::stopBroadcast()
│ │ │ └─ ← [Return]
│ │ └─ ← [Return] 12649 bytes of code
│ ├─ [1636] HelperConfig::activeNetworkConfig() [staticcall]
│ │ └─ ← [Return] MockV3Aggregator: [0x34A1D3fff3958843C43aD80F30b94c510645C316], MockV3Aggregator: [0xA8452Ec99ce0C64f20701dB7dD3abDb607c00496], ERC20Mock: [0x90193C961A926261B756D1E5bb255e67ff9498A1], ERC20Mock: [0xBb2180ebd78ce97360503434eD37fcf4a1Df61c3], 77814517325470205911140941194401928579557062014761831930645393041380819009408 [7.781e76]
│ ├─ [0] VM::startBroadcast()
│ │ └─ ← [Return]
│ ├─ [1076123] → new DecentralizedStableCoin@0x5FbDB2315678afecb367f032d93F642f64180aa3
│ │ ├─ emit OwnershipTransferred(previousOwner: 0x0000000000000000000000000000000000000000, newOwner: 0x098985Cb239846AaaAA68d4b07196dAeD7f86c01)
│ │ └─ ← [Return] 5028 bytes of code
│ ├─ [795998] → new DSCEngine@0xe7f1725E7734CE288F8367e1Bb143E90bb3F0512
│ │ └─ ← [Return] 3293 bytes of code
│ ├─ [1055] DecentralizedStableCoin::transferOwnership(DSCEngine: [0xe7f1725E7734CE288F8367e1Bb143E90bb3F0512])
│ │ └─ ← [Revert] OwnableUnauthorizedAccount(0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266)
│ └─ ← [Revert] OwnableUnauthorizedAccount(0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266)
└─ ← [Revert] OwnableUnauthorizedAccount(0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266)

Suite result: FAILED. 0 passed; 1 failed; 0 skipped; finished in 31.45ms (0.00ns CPU time)

Ran 1 test suite in 118.65ms (31.45ms CPU time): 0 tests passed, 1 failed, 0 skipped (1 total tests)

Failing tests:
Encountered 1 failing test in test/unit/DSCEngineTest.t.sol:DSCEngineTest
[FAIL: OwnableUnauthorizedAccount(0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266)] setUp() (gas: 0)

Encountered a total of 1 failing tests, 0 tests succeeded

[EngrPips]

Please show your DeployDsc script.

[anasqurreshhi]

import {Script} from "forge-std/Script.sol";
import {DecentralizedStableCoin} from "src/DecentralizedStableCoin.sol";
import {DSCEngine} from "src/DSCEngine.sol";
import {HelperConfig} from "script/HelperConfig.s.sol";

contract DeployDSC is Script {
address[] public tokenAddresses;
address[] public priceFeedAddresses;

function run() external returns (DecentralizedStableCoin, DSCEngine, HelperConfig) {
    HelperConfig config = new HelperConfig();
    (address wethUsdPriceFeed, address wbtcUsdPriceFeed, address weth, address wbtc, uint256 deployerKey) =
        config.activeNetworkConfig();
    tokenAddresses = [weth, wbtc];
    priceFeedAddresses = [wethUsdPriceFeed, wbtcUsdPriceFeed];

    vm.startBroadcast(deployerKey);
    DecentralizedStableCoin dsc = new DecentralizedStableCoin();
    DSCEngine engine = new DSCEngine(tokenAddresses, priceFeedAddresses, address(dsc));
    dsc.transferOwnership(address(engine));
    vm.stopBroadcast();
    return (dsc, engine, config);
}

}

[EngrPips]

Please show your DecentralizedStableCoin contract.

[wasim007choudhary]

@anasqurreshhi You're getting this error:

solidity OwnableUnauthorizedAccount(0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266)

because your deployment script uses vm.startBroadcast(), which makes all deployments and function calls originate from the broadcast signer, not from the Foundry test address.

So during tests:

• The DSC contract is deployed by the broadcast address.

• That broadcast address becomes the owner.

• The test continues running as the default Foundry test account (0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266).

• When transferOwnership is executed, the caller is not the owner, so it reverts.

---

Fix:

Do not broadcast when running inside tests. Only broadcast during real deployments.

Use this pattern in you script and it will solve your issue.

if (block.chainid != 31337) { // 31337 = Anvil , which is the default foundry test environment chain
    vm.startBroadcast(deployerKey);
}

DecentralizedStableCoin dsc = new DecentralizedStableCoin();
DSCEngine engine = new DSCEngine(tokenAddresses, priceFeedAddresses, address(dsc));
dsc.transferOwnership(address(engine));

if (block.chainid != 31337) {
    vm.stopBroadcast();
}

Best of luck!

[EngrPips]

Thanks for the heads-up

[anasqurreshhi]

@wasim007choudhary Thanks a lot brother