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metamask-extension/test/e2e/seeder/ganache-seeder.js

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const { ethers } = require('ethers');
const { SMART_CONTRACTS, contractConfiguration } = require('./smart-contracts');
const GanacheContractAddressRegistry = require('./ganache-contract-address-registry');
/*
* Ganache seeder is used to seed initial smart contract or set initial blockchain state.
*/
class GanacheSeeder {
constructor(ganacheProvider) {
this.smartContractRegistry = new GanacheContractAddressRegistry();
this.ganacheProvider = ganacheProvider;
}
/**
* Deploy initial smart contracts that can be used later within the e2e tests.
*
* @param contractName
*/
async deploySmartContract(contractName) {
const ethersProvider = new ethers.providers.Web3Provider(
this.ganacheProvider,
'any',
);
const signer = ethersProvider.getSigner();
const fromAddress = await signer.getAddress();
const contractFactory = new ethers.ContractFactory(
contractConfiguration[contractName].abi,
contractConfiguration[contractName].bytecode,
signer,
);
let contract;
if (contractName === SMART_CONTRACTS.HST) {
contract = await contractFactory.deploy(
contractConfiguration[SMART_CONTRACTS.HST].initialAmount,
contractConfiguration[SMART_CONTRACTS.HST].tokenName,
contractConfiguration[SMART_CONTRACTS.HST].decimalUnits,
contractConfiguration[SMART_CONTRACTS.HST].tokenSymbol,
);
} else {
contract = await contractFactory.deploy();
}
await contract.deployTransaction.wait();
if (contractName === SMART_CONTRACTS.COLLECTIBLES) {
const transaction = await contract.mintCollectibles(1, {
from: fromAddress,
});
await transaction.wait();
}
this.storeSmartContractAddress(contractName, contract.address);
}
/**
* Store deployed smart contract address within the environment variables
* to make it available everywhere.
*
* @param contractName
* @param contractAddress
*/
storeSmartContractAddress(contractName, contractAddress) {
this.smartContractRegistry.storeNewContractAddress(
contractName,
contractAddress,
);
}
/**
* Return an instance of the currently used smart contract registry.
*
* @returns GanacheContractAddressRegistry
*/
getContractRegistry() {
return this.smartContractRegistry;
}
}
module.exports = GanacheSeeder;