If update the anchor.toml to localnet

[programs.localnet]
swap_example = "C3ti6PFK6PoYShRFx1BNNTQU3qeY1iVwjwCA6SjJhiuW"

[provider]
cluster = "Localnet"
wallet = "~/.config/solana/id.json"

runing the test will fail

TypeError: Cannot read properties of undefined (reading 'programId')

why and how to modify it works in local net ?

Hey @jpcaulfi I've made an example anchor program that I think can be added to mint-1 folder as there isn't anything currently there. Could you have a look at it and see if it's suitable? https://github.com/Amaechi-Tetteh/spltoken

Why does the token-swap use whole u64 amounts in the following I64F64 calculation - which in my view could lead to overflow issues. The maximum Integer part from I6F64 is 2^63 -1. In their deposit_liquidity.rs file they calculated liquidity like:

pub fn deposit_liquidity(
    ctx: Context<DepositLiquidity>,
    amount_a: u64,
    amount_b: u64,
) -> Result<()> {
...
    let mut liquidity = I64F64::from_num(amount_a)
            .checked_mul(I64F64::from_num(amount_b))
            .unwrap()
            .sqrt()
            .to_num::<u64>();

That means if for example amount_a and amount_b is give in lamports which is sol * 10^9 they could only provide the square root of (2^63 - 1) / 10^9 = 3 SOL into the contract on each side. Why not cut amount/10^9 before the calculations as I64F64 has its floating precision also set to 2^-64 . Meaning, the overflow issue isnt a problem if the arguments are lamports - great for precision. But why don't they convert and calculate in SOL / use U128F0 within the contract? Or am I misunderstanding something here ?

Why are we comparing invariant here with pool_a.amount * pool_a.amount

Looks like after commit e76ac6c, running the test for create account now fails.

My guess is, this is due to the hardcoding of Au21huMZuDQrbzu2Ec5ohpW5CKRqhcGV6qLawfydStGs as program ID in the test.

Below is the error:

  Create a system account
    1) Create the account


  0 passing (103ms)
  1 failing

  1) Create a system account
       Create the account:
     Error: failed to send transaction: Transaction simulation failed: Attempt to load a program that does not exist
      at Connection.sendEncodedTransaction (node_modules/@solana/web3.js/src/connection.ts:4934:13)
      at processTicksAndRejections (node:internal/process/task_queues:96:5)
      at Connection.sendRawTransaction (node_modules/@solana/web3.js/src/connection.ts:4893:20)
      at Connection.sendTransaction (node_modules/@solana/web3.js/src/connection.ts:4881:12)
      at sendAndConfirmTransaction (node_modules/@solana/web3.js/src/utils/send-and-confirm-transaction.ts:31:21)

Hey @jpcaulfi. Recently, I found out about the Seahorse-lang and would love to add examples to the repository. Along with that, Developer Experience repository motivated me even more!

Let me know, thanks!

When I run basics/favorites/anchor project, there is error like below.
Could you tell me how to fix this?
Thanks in advance

favorites
Balance: 500,000,000 SOL
1) Writes our favorites to the blockchain
Invalid arguments: favorites not provided.
2) Updates the favorites
3) Rejects transactions from unauthorized signers

0 passing (301ms)
3 failing

1. favorites
   Writes our favorites to the blockchain:
   Error: Invalid arguments: favorites not provided.
   at /home/quan/workspace/favorites/node_modules/@coral-xyz/anchor/src/program/common.ts:50:15
   at Array.forEach ()
   at validateAccounts (node_modules/@coral-xyz/anchor/src/program/common.ts:45:14)
   at ix (node_modules/@coral-xyz/anchor/src/program/namespace/instruction.ts:44:23)
   at txFn (node_modules/@coral-xyz/anchor/src/program/namespace/transaction.ts:24:14)
   at MethodsBuilder.rpc [as _rpcFn] (node_modules/@coral-xyz/anchor/src/program/namespace/rpc.ts:21:18)
   at MethodsBuilder.rpc (node_modules/@coral-xyz/anchor/src/program/namespace/methods.ts:212:17)

2. favorites
   Updates the favorites:
   Error: null
   at /home/quan/workspace/favorites/tests/favorites.ts:60:13
   at Generator.throw ()
   at rejected (tests/favorites.ts:29:65)

3. favorites
   Rejects transactions from unauthorized signers:

   AssertionError: expected false to be true

   • expected - actual

   -false
   +true

   at /home/quan/workspace/favorites/tests/favorites.ts:75:14
   at Generator.throw ()
   at rejected (tests/favorites.ts:29:65)

Hello there,
Please I have this bug i have been facing, i have tried everything but it’s not working
this is the raw error message
Error: Raw transaction 4n7GkQVEtedpvjMU27nnfhwxJhXh6xHxCG7VV8taVtdhvEyo7BfEdkctX84zx3CEvxxFCYCLEbPiFPKzB9AsEuXi failed ({"err":{"InstructionError":[0,"PrivilegeEscalation"]}})

Error: failed to send transaction: Transaction simulation failed: Error processing Instruction 0: Cross-program invocation with unauthorized signer or writable account

Please here is my code, i will really appreciate it of anyone can help

And here is my test code below

Hi:

I am trying to understand the examples in this repo. While I have reasonable understanding of writing Solidity code for EVM targets, some of the code in the examples is hard for me to understand. For example, in this:

@program_id("F1ipperKF9EfD821ZbbYjS319LXYiBmjhzkkf5a26rC")
contract hello_solana {
    // The constructor is used to create a new account
    // Here we create a new account that stores no data and only prints messages to the program logs when the constructor is called.
    @payer(payer) // The "payer" pays for the account creation
    constructor() {
        // We get the program ID by calling 'this';
        address programId = address(this);

        // Print messages to the program logs
        print("Hello, Solana!");
        print("Our program's Program ID: {:}".format(programId));
    }
}

What is the meaning of @program_id and how is the value F1ipperKF9EfD821ZbbYjS319LXYiBmjhzkkf5a26rC generated or discovered?

Also, what is @payer(payer) about? I have not run across this before in typical Solidity programming for the EVM.

I know these are newbie questions, maybe not appropriate for this issue. If so, please might you be able to tell me where I can get some questions answered?

Thanks in advance!

It would be nice to have a setup where the example programs can be deployed and the client tests ran against them. I think it should be possible to set this up with github actions.

If this is considered worth having, then I will be happy to help setup.

Hi:

I am trying to exercise a Solana program I migrated from Solidity using Solang.

I keep getting this error:

Error: SendTransactionError: failed to send transaction: Transaction simulation failed: Error processing Instruction 0: invalid program argument
    at Connection.sendEncodedTransaction (/home/reselbob/Documents/solidity-to-solana/node_modules/@solana/web3.js/lib/index.cjs.js:9560:13)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async Connection.sendRawTransaction (/home/reselbob/Documents/solidity-to-solana/node_modules/@solana/web3.js/lib/index.cjs.js:9526:20)
    at async Connection.sendTransaction (/home/reselbob/Documents/solidity-to-solana/node_modules/@solana/web3.js/lib/index.cjs.js:9517:12)
    at async sendAndConfirmTransaction (/home/reselbob/Documents/solidity-to-solana/node_modules/@solana/web3.js/lib/index.cjs.js:2145:21)
    at async callGetMessage (/home/reselbob/Documents/solidity-to-solana/scripts/SayHi.js:50:20) {
  logs: [
    'Program 5FWPj98F4TEfSvWxqYXQW4whdoLXTN2yeXfCJWfY7EjL invoke [1]',
    'Program 5FWPj98F4TEfSvWxqYXQW4whdoLXTN2yeXfCJWfY7EjL consumed 34 of 200000 compute units',
    'Program 5FWPj98F4TEfSvWxqYXQW4whdoLXTN2yeXfCJWfY7EjL failed: invalid program argument'
  ]
}

I demonstrate the issue in this 4 minute video.

For purposes of research, I am intentionally avoiding using Anchor.

Here is the Solidity code that I migrated.

Here is the client script I used to try to execute the program.

Here is the entire project on GitHub.

If the problem is due to some mistake on my part, in all sincerity I ask your forgiveness.

For what it's worth, this problem has been plaguing me for days.

Thanks in advance for any help and direction you can provide.

We need a place to educate people on how to use this feature & update example with new SDK versions

We just got an awesome implementation of closing (destroying) an account using Anchor from @dadepo - but a native one would also be dope.

Lmk if anyone can put this together.

Maybe we can have devnet-only folder & put examples like https://github.com/TeamRaccoons/address-lookup-table-multi-swap there

Hey @jpcaulfi i would love to put this example here. I have a repo which has an example of this but it seams it needs to be updated as its 5 months old. https://github.com/0xPratik/NFT/blob/master/programs/mpl-testing/src/lib.rs

I'm trying to run the yarn test from counter/native directory.

$ pwd
~/program-examples/basics/counter/native

$ yarn test
Error: program file does not exist: ./target/deploy/counter_solana_native.so
Error: server closed unexpectedly
    at ChildProcess.onClose (program-examples/basics/counter/native/node_modules/start-server-and-test/src/index.js:80:14)
    at ChildProcess.emit (node:events:390:28)
    at maybeClose (node:internal/child_process:1064:16)
    at Process.ChildProcess._handle.onexit (node:internal/child_process:301:5)
error Command failed with exit code 1.

I think yarn should detect which directory the test is invoked from. There should be a way to know the project root and that should be prefixed to the target/deploy/counter_solana_native.so path.