initial commit

.gitignore

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+.anchor
+.DS_Store
+target
+**/*.rs.bk
+node_modules
+test-ledger
+.yarn
+.surfpool
+spec.md

.prettierignore

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+.anchor
+.DS_Store
+target
+node_modules
+dist
+build
+test-ledger

Anchor.toml

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+[toolchain]
+package_manager = "yarn"
+
+[features]
+resolution = true
+skip-lint = false
+
+[programs.localnet]
+descro = "DjVR4EuYV6USMJFfsGZwhZ3y8rtWsmG8EvDY96GTqqi3"
+
+[provider]
+cluster = "localnet"
+wallet = "~/.config/solana/id.json"
+
+[scripts]
+test = "cargo test"
+
+[hooks]

Cargo.toml

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+[workspace]
+members = [
+    "programs/*"
+]
+resolver = "2"
+
+[profile.release]
+overflow-checks = true
+lto = "fat"
+codegen-units = 1
+[profile.release.build-override]
+opt-level = 3
+incremental = false
+codegen-units = 1

migrations/deploy.ts

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+// Migrations are an early feature. Currently, they're nothing more than this
+// single deploy script that's invoked from the CLI, injecting a provider
+// configured from the workspace's Anchor.toml.
+
+import * as anchor from "@anchor-lang/core";
+
+module.exports = async function (provider: anchor.AnchorProvider) {
+  // Configure client to use the provider.
+  anchor.setProvider(provider);
+
+  // Add your deploy script here.
+};

package.json

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+{
+  "license": "ISC",
+  "scripts": {
+    "lint:fix": "prettier */*.js \"*/**/*{.js,.ts}\" -w",
+    "lint": "prettier */*.js \"*/**/*{.js,.ts}\" --check"
+  },
+  "dependencies": {
+    "@anchor-lang/core": "^1.0.2"
+  },
+  "devDependencies": {
+    "@types/bn.js": "^5.1.0",
+    "@types/chai": "^4.3.0",
+    "@types/mocha": "^9.0.0",
+    "chai": "^4.3.4",
+    "mocha": "^9.0.3",
+    "prettier": "^2.6.2",
+    "ts-mocha": "^10.0.0",
+    "typescript": "^5.7.3"
+  }
+}

programs/descro/Cargo.toml

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+[package]
+name = "descro"
+version = "0.1.0"
+description = "Created with Anchor"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "lib"]
+name = "descro"
+
+[features]
+default = []
+cpi = ["no-entrypoint"]
+no-entrypoint = []
+no-idl = []
+no-log-ix-name = []
+idl-build = ["anchor-lang/idl-build"]
+anchor-debug = []
+custom-heap = []
+custom-panic = []
+
+
+[dependencies]
+anchor-lang = "1.0.2"
+
+[dev-dependencies]
+litesvm = "0.10.0"
+solana-message = "3.0.1"
+solana-transaction = "3.0.2"
+solana-signer = "3.0.0"
+solana-keypair = "3.0.1"
+
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(target_os, values("solana"))'] }

programs/descro/src/constants.rs

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+use anchor_lang::prelude::*;
+
+#[constant]
+pub const SEED: &str = "anchor";

programs/descro/src/error.rs

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+use anchor_lang::prelude::*;
+
+#[error_code]
+pub enum ErrorCode {
+    #[msg("Custom error message")]
+    CustomError,
+}

programs/descro/src/instructions.rs

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+pub mod initialize;
+
+pub use initialize::*;

programs/descro/src/instructions/initialize.rs

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+use anchor_lang::prelude::*;
+
+#[derive(Accounts)]
+pub struct Initialize {}
+
+pub fn handler(ctx: Context<Initialize>) -> Result<()> {
+    msg!("Greetings from: {:?}", ctx.program_id);
+    Ok(())
+}

programs/descro/src/lib.rs

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+pub mod constants;
+pub mod error;
+pub mod instructions;
+pub mod state;
+
+use anchor_lang::prelude::*;
+
+pub use constants::*;
+pub use instructions::*;
+pub use state::*;
+
+declare_id!("DjVR4EuYV6USMJFfsGZwhZ3y8rtWsmG8EvDY96GTqqi3");
+
+#[program]
+pub mod descro {
+    use super::*;
+
+    pub fn initialize(ctx: Context<Initialize>) -> Result<()> {
+        initialize::handler(ctx)
+    }
+}

programs/descro/tests/test_initialize.rs

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+
+use {
+    anchor_lang::{solana_program::instruction::Instruction, InstructionData, ToAccountMetas},
+    litesvm::LiteSVM,
+    solana_message::{Message, VersionedMessage},
+    solana_signer::Signer,
+    solana_keypair::Keypair,
+    solana_transaction::versioned::VersionedTransaction,
+};
+
+#[test]
+fn test_initialize() {
+    let program_id = descro::id();
+    let payer = Keypair::new();
+    let mut svm = LiteSVM::new();
+    let bytes = include_bytes!("../../../target/deploy/descro.so");
+    svm.add_program(program_id, bytes).unwrap();
+    svm.airdrop(&payer.pubkey(), 1_000_000_000).unwrap();
+    
+    let instruction = Instruction::new_with_bytes(
+        program_id,
+        &descro::instruction::Initialize {}.data(),
+        descro::accounts::Initialize {}.to_account_metas(None),
+    );
+
+    let blockhash = svm.latest_blockhash();
+    let msg = Message::new_with_blockhash(&[instruction], Some(&payer.pubkey()), &blockhash);
+    let tx = VersionedTransaction::try_new(VersionedMessage::Legacy(msg), &[payer]).unwrap();
+
+    let res = svm.send_transaction(tx);
+    assert!(res.is_ok());
+}

rust-toolchain.toml

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+[toolchain]
+channel = "1.89.0"
+components = ["rustfmt","clippy"]
+profile = "minimal"

tsconfig.json

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+{
+  "compilerOptions": {
+    "types": ["mocha", "chai"],
+    "typeRoots": ["./node_modules/@types"],
+    "lib": ["es2015"],
+    "module": "commonjs",
+    "target": "es6",
+    "esModuleInterop": true
+  }
+}