truffle test The following information will appear Download xxx

[Corybyte]

Truffle v5.11.0 (core: 5.11.0) Ganache v7.9.0 Solidity v0.5.16 (solc-js) Node v14.16.0 Web3.js v1.10.0

The first time a truffle test is executed for the same truffle project, the

✓ Fetching solc version list from solc-bin. Attempt #2
✓ Downloading compiler. Attempt #2.

It does not appear on the second execution, and I would like to know what I can do to make a truffle project not output the above output on the first execution of the truffle test. Because this will cause my compilation contract to take longer to operate.

[gnidan]

Can you please share your truffle-config.js?

Note that Truffle needs to download the compiler version you specify, and also Truffle needs to compile your contracts. Not sure what you're asking about here... do you want to skip the solc download, or skip the compilation? There are ways to reduce the number of times these things occur, but curious what exactly you're looking for.

[Corybyte]

Can you please share your truffle-config.js?

Note that Truffle needs to download the compiler version you specify, and also Truffle needs to compile your contracts. Not sure what you're asking about here... do you want to skip the solc download, or skip the compilation? There are ways to reduce the number of times these things occur, but curious what exactly you're looking for.

/**
 * Use this file to configure your truffle project. It's seeded with some
 * common settings for different networks and features like migrations,
 * compilation, and testing. Uncomment the ones you need or modify
 * them to suit your project as necessary.
 *
 * More information about configuration can be found at:
 *
 * https://trufflesuite.com/docs/truffle/reference/configuration
 *
 * Hands-off deployment with Infura
 * --------------------------------
 *
 * Do you have a complex application that requires lots of transactions to deploy?
 * Use this approach to make deployment a breeze 🏖️:
 *
 * Infura deployment needs a wallet provider (like @truffle/hdwallet-provider)
 * to sign transactions before they're sent to a remote public node.
 * Infura accounts are available for free at 🔍: https://infura.io/register
 *
 * You'll need a mnemonic - the twelve word phrase the wallet uses to generate
 * public/private key pairs. You can store your secrets 🤐 in a .env file.
 * In your project root, run `$ npm install dotenv`.
 * Create .env (which should be .gitignored) and declare your MNEMONIC
 * and Infura PROJECT_ID variables inside.
 * For example, your .env file will have the following structure:
 *
 * MNEMONIC = <Your 12 phrase mnemonic>
 * PROJECT_ID = <Your Infura project id>
 *
 * Deployment with Truffle Dashboard (Recommended for best security practice)
 * --------------------------------------------------------------------------
 *
 * Are you concerned about security and minimizing rekt status 🤔?
 * Use this method for best security:
 *
 * Truffle Dashboard lets you review transactions in detail, and leverages
 * MetaMask for signing, so there's no need to copy-paste your mnemonic.
 * More details can be found at 🔎:
 *
 * https://trufflesuite.com/docs/truffle/getting-started/using-the-truffle-dashboard/
 */

// require('dotenv').config();
// const { MNEMONIC, PROJECT_ID } = process.env;

// const HDWalletProvider = require('@truffle/hdwallet-provider');

module.exports = {
  /**
   * Networks define how you connect to your ethereum client and let you set the
   * defaults web3 uses to send transactions. If you don't specify one truffle
   * will spin up a managed Ganache instance for you on port 9545 when you
   * run `develop` or `test`. You can ask a truffle command to use a specific
   * network from the command line, e.g
   *
   * $ truffle test --network <network-name>
   */

  networks: {
    ganacheNet:{
      host: "127.0.0.1",
      port: 8545,
      network_id: '*',
    }
    // Useful for testing. The `development` name is special - truffle uses it by default
    // if it's defined here and no other network is specified at the command line.
    // You should run a client (like ganache, geth, or parity) in a separate terminal
    // tab if you use this network and you must also set the `host`, `port` and `network_id`
    // options below to some value.
    //
    // development: {
    //  host: "127.0.0.1",     // Localhost (default: none)
    //  port: 8545,            // Standard Ethereum port (default: none)
    //  network_id: "*",       // Any network (default: none)
    // },
    //
    // An additional network, but with some advanced options…
    // advanced: {
    //   port: 8777,             // Custom port
    //   network_id: 1342,       // Custom network
    //   gas: 8500000,           // Gas sent with each transaction (default: ~6700000)
    //   gasPrice: 20000000000,  // 20 gwei (in wei) (default: 100 gwei)
    //   from: <address>,        // Account to send transactions from (default: accounts[0])
    //   websocket: true         // Enable EventEmitter interface for web3 (default: false)
    // },
    //
    // Useful for deploying to a public network.
    // Note: It's important to wrap the provider as a function to ensure truffle uses a new provider every time.
    // goerli: {
    //   provider: () => new HDWalletProvider(MNEMONIC, `https://goerli.infura.io/v3/${PROJECT_ID}`),
    //   network_id: 5,       // Goerli's id
    //   confirmations: 2,    // # of confirmations to wait between deployments. (default: 0)
    //   timeoutBlocks: 200,  // # of blocks before a deployment times out  (minimum/default: 50)
    //   skipDryRun: true     // Skip dry run before migrations? (default: false for public nets )
    // },
    //
    // Useful for private networks
    // private: {
    //   provider: () => new HDWalletProvider(MNEMONIC, `https://network.io`),
    //   network_id: 2111,   // This network is yours, in the cloud.
    //   production: true    // Treats this network as if it was a public net. (default: false)
    // }
  },

  // Set default mocha options here, use special reporters, etc.
  mocha: {
    // timeout: 100000
  },

  // Configure your compilers
  compilers: {
    solc: {
      version: "0.8.20",      // Fetch exact version from solc-bin (default: truffle's version)
      // docker: true,        // Use "0.5.1" you've installed locally with docker (default: false)
      // settings: {          // See the solidity docs for advice about optimization and evmVersion
      //  optimizer: {
      //    enabled: false,
      //    runs: 200
      //  },
      //  evmVersion: "byzantium"
      // }
    }
  },

  // Truffle DB is currently disabled by default; to enable it, change enabled:
  // false to enabled: true. The default storage location can also be
  // overridden by specifying the adapter settings, as shown in the commented code below.
  //
  // NOTE: It is not possible to migrate your contracts to truffle DB and you should
  // make a backup of your artifacts to a safe location before enabling this feature.
  //
  // After you backed up your artifacts you can utilize db by running migrate as follows:
  // $ truffle migrate --reset --compile-all
  //
  // db: {
  //   enabled: false,
  //   host: "127.0.0.1",
  //   adapter: {
  //     name: "indexeddb",
  //     settings: {
  //       directory: ".db"
  //     }
  //   }
  // }
};

I want to run truffle test on my server without downloading xxx, I already have solc and solc-js packages.

[Corybyte]

Can you please share your truffle-config.js?

Note that Truffle needs to download the compiler version you specify, and also Truffle needs to compile your contracts. Not sure what you're asking about here... do you want to skip the solc download, or skip the compilation? There are ways to reduce the number of times these things occur, but curious what exactly you're looking for.

I noticed a change in executing truffle version after I executed truffle test, resulting in the following```

Truffle v5.11.0 (core: 5.11.0)
Ganache v7.9.0
Solidity - 0.8.20 (solc-js)
Node v14.16.0
Web3.js v1.10.0

[Corybyte]

Can you please share your truffle-config.js?

Note that Truffle needs to download the compiler version you specify, and also Truffle needs to compile your contracts. Not sure what you're asking about here... do you want to skip the solc download, or skip the compilation? There are ways to reduce the number of times these things occur, but curious what exactly you're looking for.

But here's the strange thing.

root@educoder:~# solcjs --version
0.8.2+commit.661d1103.Emscripten.clang
root@educoder:~# solc --version
solc, the solidity compiler commandline interface
Version: 0.8.2+commit.661d1103.Linux.g++

So why is solcjs still 0.5.16 here?

Solidity v0.5.16 (solc-js)

[gnidan]

Truffle downloads and uses its own internal version of solc by default, so that won't necessarily match the version solc or solcjs gives you on the $PATH.

You can change version: "native" if you just want to call out to solc.

Sounds like this is resolved now, though? Truffle is downloading solc again?