When i run truffle test following errors occure

[coderbang1]

• I've asked for help in the Truffle Gitter before filing this issue.

---

Issue

When i run truffle test following errors occur..
Compiling your contracts...

√ Fetching solc version list from solc-bin. Attempt #1

Compiling .\contracts\Migrations.sol
Compiling .\contracts\SimpleSmartContract.sol
√ Fetching solc version list from solc-bin. Attempt #1
Compilation warnings encountered:

Warning: SPDX license identifier not provided in source file. Before publishing, consider adding a comment containing "SPDX-License-Identifier: <SPDX-License>" to each source file. Use "SPDX-License-Identifier: UNLICENSED" for non-open-source code. Please see https://spdx.org for more information.

--> /F/pracdap/contracts/SimpleSmartContract.sol

Artifacts written to C:\Users\HP\AppData\Local\Temp\test--3916-S3hTWsTSHsgH
Compiled successfully using:

• solc: 0.8.3+commit.8d00100c.Emscripten.clang

Contract: SimpleSmartContract
1) should be deployed
> No events were emitted

0 passing (130ms)
1 failing

1. Contract: SimpleSmartContract
   should be deployed:
   Error: SimpleSmartContract has not been deployed to detected network (network/artifact mismatch)
   at Object.checkNetworkArtifactMatch (F:\node\node_modules\truffle\build\webpack:\packages\contract\lib\utils\index.js:245:1)
   at Function.deployed (F:\node\node_modules\truffle\build\webpack:\packages\contract\lib\contract\constructorMethods.js:88:1)
   at processTicksAndRejections (internal/process/task_queues.js:93:5)
   at Context. (test\simpleSmartContract.js:5:33)

Steps to Reproduce

Please provide the shortest amount of steps to reproduce your issue.

Expected Behavior

it should run successfully

Actual Results

Error: SimpleSmartContract has not been deployed to detected network (network/artifact mismatch)

Environment

• Operating System: windows 10

• Ethereum client:

• Truffle version (truffle version):Truffle v5.2.6 (core: 5.2.6)

• node version (node --version):Node v14.16.0

• npm version (npm --version): 6.14.11

[eggplantzzz]

I believe that warning comes from the Solidity compiler which is telling you to put a license identifier in your contracts. This takes the following form at the top of your Solidity source files:

// SPDX-License-Identifier: MIT

where MIT is the type of license. If you add these that warning should go away. Cheers!

[eggplantzzz]

@coderbang1 oh I seemed to miss the error below the SPDX warning. Are you sure you deployed your contract? Can you share your test?

[coderbang1]

i will.... can you help me with this? i want to send a certain portion to a specific address with every transaction in Smart Contract

[eggplantzzz]

Sure I will, just share your project with me and I'll take a look for errors. I need to see your code as well as the steps to reproduce the error.

[coderbang1]

here is the code....

> 1. constructor() public {
> 2.         name = "me";
> 3.         symbol = "me";
> 4.         decimals = 18;
> 5.         _totalSupply = 250000000000000000000000000;
> 6. 
> 7.         balances[msg.sender] = _totalSupply;
> 8.         emit Transfer(address(0), msg.sender, _totalSupply);
> 9.     }
> 10. 
> 11.     function totalSupply() public view returns (uint) {
> 12.         return _totalSupply  - balances[address(0)];
> 13.     }
> 14. 
> 15.     function balanceOf(address tokenOwner) public view returns (uint balance) {
> 16.         return balances[tokenOwner];
> 17.     }
> 18. 
> 19.     function allowance(address tokenOwner, address spender) public view returns (uint remaining) {
> 20.         return allowed[tokenOwner][spender];
> 21.     }
> 22. 
> 23.     function approve(address spender, uint tokens) public returns (bool success) {
> 24.         allowed[msg.sender][spender] = tokens;
> 25.         emit Approval(msg.sender, spender, tokens);
> 26.         return true;
> 27.     }
> 28. 
> 29.     function transfer(address to, uint tokens) public returns (bool success) {
> 30.         balances[msg.sender] = safeSub(balances[msg.sender], tokens);
> 31.         balances[to] = safeAdd(balances[to], tokens);
> 32.         emit Transfer(msg.sender, to, tokens);
> 33.         return true;
> 34.     }
> 35. 
> 36.     function transferFrom(address from, address to, uint tokens) public returns (bool success) {
> 37.         balances[from] = safeSub(balances[from], tokens);
> 38.         allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
> 39.         balances[to] = safeAdd(balances[to], tokens);
> 40.         emit Transfer(from, to, tokens);
> 41.         return true;
> 42.     }``

[eggplantzzz]

Can you provide me with the entire project? I can't troubleshoot deployment issues by just looking at your tests.

[coderbang1]

this is a smart contract...i want to add functionally like: send a certain portion to a specific address with every transaction in Smart Contract

[eggplantzzz]

You should check out the metacoin box for an example. https://github.com/truffle-box/metacoin-box
You can clone it locally using truffle unbox metacoin in an empty directory.

[cds-amal]

Hi @coderbang1, we're closing this for issue maintenance. Please comment if you'd like us to reopen. thanks!