script to test polkadot.js/api functions

[edwardmack]

Changes

• This adds Node.js javascript test script for testing polkadot.js/api. It calls polkadot.js/api functions and displays output to console.

Tests

Install polkadot.js/api package (assuming you already have node.js and npm installed).

cd tests/polkadotjs_test/
npm install

Start building blocks with gossamer node. Then run script (from within tests/polkadotjs_test/).

node test.js

Observe the console output for results or errors.

Checklist

• I have read CODE_OF_CONDUCT and CONTRIBUTING
• I have provided as much information as possible and necessary
• I have reviewed my own pull request before requesting a review
• All integration tests and required coverage checks are passing

Issues

• closes: Create set of Polkadot.js test scripts #1198

[RyRy79261]

This is great, could use the code to create a dashboard later on

[noot]

great stuff! @dutterbutter can we get this added to CI somehow?

[dutterbutter]

great stuff! @dutterbutter can we get this added to CI somehow?

@noot absolutely! Will be added with #1228

[arijitAD]

I ran this against the substrate node. It errors out. Can you check this?