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https://github.com/littleboycoding/solana-test-validator-js

Spin-up solana-test-validator instance in JavaScript
https://github.com/littleboycoding/solana-test-validator-js

javascript mocha solana test typescript

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Spin-up solana-test-validator instance in JavaScript

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# solana-test-validator-js

Spin-up solana-test-validator instance in JavaScript, intended to be use with test framework.

It create connection instance and funded account ready to be use in test !

highly recommended to use in combination with [Mocha](https://mochajs.org) ☕.

## Documentation

documentation for all API is generated via [TypeDoc](https://typedoc.org) at [littleboycoding.github.io/solana-test-validator-js](https://littleboycoding.github.io/solana-test-validator-js)

## Requirement

- [solana-tool-suite](https://docs.solana.com/cli/install-solana-cli-tools)

verify by running `solana-test-validator --version`

## Setup

Install dependencies

```sh
$ npm i -D solana-test-validator-js @solana/web3.js
```

In your .gitignore

```gitignore
test-ledger/
```

## Examples

### Mocha & TypeScript

Create and connect with startAndConnect

this function spawn solana-test-validator process then create connection instance

additionally, it also create funded accounts with given number

```typescript
import { Connection, Keypair, LAMPORTS_PER_SOL } from "@solana/web3.js";
import {
startAndConnect,
getAccounts,
Cleanup,
} from "solana-test-validator-js";

describe("Test", function () {
let connection: Connection;
let cleanup: Cleanup;

const accounts = getAccounts(1);

this.timeout(60000);

before(async function () {
[connection, cleanup] = startAndConnect([], {
number: 1,
lamports: LAMPORTS_PER_SOL * 10000,
});
});

after(function () {
cleanup();
});
});
```

### Deploy mock program

`startAndConnect` accept all solana-test-validator arguments, this example use `--bpf-program` to deploy mock program !

```typescript
import { Connection, Keypair } from "@solana/web3.js";
import {
startAndConnect,
Cleanup,
getAccounts,
} from "solana-test-validator-js";

describe("Test", function () {
let connection: Connection;
let cleanup: Cleanup;

const accounts = getAccounts(1);

this.timeout(60000);

before(async function () {
[connection, cleanup] = startAndConnect([
"--bpf-program",
PROGRAM_ADDRESS,
"",
]);
});

after(function () {
cleanup();
});
});
```

### Mocha global fixture

Mocha's global fixture make it easy to setup test that guaranteed to run only once

`fixture.ts`

```typescript
import { startAndConnect } from "solana-test-validator-js";

export async function MochaGlobalSetup() {
const [, cleanup] = startAndConnect();
this.cleanup();
}

export function MochaGlobalTeardown() {
if (this.cleanup) this.cleanup();
}
```

`test.ts`

```typescript
import {
startAndConnect,
getAccounts,
connection,
} from "solana-test-validator-js";

describe("Test", function () {
const accounts = getAccounts(1);

this.timeout(60000);

it("should work", async function () {
const account = await connection.getAccountInfo(accounts[0].publicKey);
});
});
```

## Note

This project is highly inspired by awesome projects [Hardhat](https://hardhat.org) 👷 and [Truffle](https://trufflesuite.com) 🍫 !