Halva Test Example

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Halva is a toolchain for improving the experience of developing Decentralized Applications based on Substrate.

📝 Table of Contents

• About
• Getting Started
• Usage
• Built Using

🧐 About

Halva is a toolchain for developing Decentralized Applications based on Substrate. It provides a high-level way to configure a development environment, interact with Substrate through external API and writing your test cases. Halva targets testing extrinsics via RPC calls this allows test Substrate (or clients compatible with Substrate RPC) as a black-box.

🏁 Getting Started

Installing

Before running the tests, you need to:

Clone this repo

git clone https://github.com/halva-suite/halva-test-example.git

cd halva-test-example/

Install halva-cli

npm install halva-cli -g

If necessary, you can install spec-builder

npm install spec-builder -g

🔧 Running the tests

All tests are in the test folder

Run node:

halva-cli start

Use cli to start tests:

halva-cli test

If you need help, use

halva-cli --help

Writing test notes

You can use global variables provided by halva

describe('Halva test', () => {

  describe('test global', () => {
    it('Transfer balance to bob(passes)', async () => {
      const tx = halva.polkadot.tx.balances.transfer(bobPair.address, '10000000');
      await passes(tx, 'Send', alicePair);
    });
  });
});

Variables

• halva.accounts - 10 Key pairs for tests
• halva.polkadot - ApiPromise object of polkadot

⛏️ Built Using

• Mocha - Test framework
• PolkadotJs - Api for substrate
• NodeJs - Server Environment