Crypto-BEP20-Stakeable.js-FirstTest.js

const DevToken = artifacts.require("DevToken");
const { assert } = require('chai');
const truffleAssert = require('truffle-assertions');
contract("DevToken", async accounts => {
    it("Staking 100x2", async () => {
        devToken = await DevToken.deployed();

        // Stake 100 is used to stake 100 tokens twice and see that stake is added correctly and money burned
        let owner = accounts[0];
        // Set owner, user and a stake_amount
        let stake_amount = 100;
        // Add som tokens on account 1 asweel
        await devToken.mint(accounts[1], 1000);
        // Get init balance of user
        balance = await devToken.balanceOf(owner)

        // Stake the amount, notice the FROM parameter which specifes what the msg.sender address will be

        stakeID = await devToken.stake(stake_amount, { from: owner });
        // Assert on the emittedevent using truffleassert
        // This will capture the event and inside the event callback we can use assert on the values returned
        truffleAssert.eventEmitted(
            stakeID,
            "Staked",
            (ev) => {
                // In here we can do our assertion on the ev variable (its the event and will contain the values we emitted)
                assert.equal(ev.amount, stake_amount, "Stake amount in event was not correct");
                assert.equal(ev.index, 1, "Stake index was not correct");
                return true;
            },
            "Stake event should have triggered");

    });

    it("cannot stake more than owning", async() => {

        // Stake too much on accounts[2]
        devToken = await DevToken.deployed();

        try{
            await devToken.stake(1000000000, { from: accounts[2]});
        }catch(error){
            assert.equal(error.reason, "DevToken: Cannot stake more than you own");
        }
    });
});