Ereignisse mit bestimmten Werten von indizierten Parametern können nicht gefiltert werden

Ich versuche gerade, einen Smart Contract mit dem Trüffelanzug zu testen (mit 'Trüffeltest'). Mein Vertrag besteht aus einem einfachen ERC20-Token, der das Standard-Transfer-Ereignis enthält:

event Transfer(address indexed from, address indexed to, uint256 value);

Unten ist mein Code, der versucht, alle "Transfer"-Ereignisse zu abonnieren, die nur von Konto[0] zu Konto[1] kommen. Obwohl die 2 Parameter als "indiziert" deklariert sind, scheint der Filter nicht zu funktionieren und ich erhalte alle Übertragungsereignisse, unabhängig vom Absender/Empfänger. Ich habe versucht, den Code auf verschiedene Weise zu ändern, aber bisher scheint nichts zu funktionieren

const EnergyToken = artifacts.require("EnergyToken");
const assert = require('assert');
const truffleAssert = require('truffle-assertions');
const { performance } = require('perf_hooks');

contract("Energy Heavy Load Test", async accounts => {
    const numberOfTransactions = 10;
    let startTime = 0;
    let finishTime = 0;
    let subscription;
    let contract;
    let i = 0;

    console.log(web3.version);

    // Function for rounding numbers
    function round(value, precision) {
        var multiplier = Math.pow(10, precision || 0);
        return Math.round(value * multiplier) / multiplier; 
    }

    // executed before each test
    before(async () => {
        contract = await EnergyToken.at("0x5BbD383bD43aC3896B86207eFe88cf0628ad06F0");
    });

    // Test mining time of 2500 transaction calls on the EnergyToken smart contract's transfer() method 
    it("send " + numberOfTransactions + " transactions of 1 EnergyToken from account 0 to account 1", (done) => {
        // contract.Transfer(function(error, event) { 
        //     i++;
        //     console.log(event)
        //     if(i == 1)
        //         startTime = performance.now();

        //     if (i == numberOfTransactions) {
        //         finishTime = performance.now();
        //         console.log("Transactions confirmed!" + " It took " + round((finishTime - startTime)/1000,2) + " seconds to confirm " + numberOfTransactions + " transactions");
        // .       done();
        //     }
        // });

        // contract.getPastEvents('Transfer', {
        //     filter: { from: accounts[0], to: accounts[1] },
        //     fromBlock: 0,
        //     toBlock: 'latest'
        // }, function(error, result) {
        //     if(error) {
        //         console.log(error, 'error');
        //     } else {
        //         console.log(result, 'result');
        //     }
        // });

        for (let j = 0; j < numberOfTransactions; j++) {
            contract.transfer(accounts[0], 1, { from:accounts[1] });
        }
        console.log("Finished sending " + numberOfTransactions + " transactions from account 1!!" + accounts[1] + " to "  + accounts[0]);
    });

    it("Calculate average gas used by the transfer() function", async () => {
        let result = await contract.transfer(accounts[1], 1);  
        let hash = await result.tx;
        let tx = await web3.eth.getTransactionReceipt(hash);
        let gasUsed = await tx.gasUsed;
        console.log(" Gas used for a 'Transfer' transaction: " + gasUsed);
    });

    it("Calculate average gas used by the approve() function", async () => {       
        let result = await contract.approve(accounts[1], 1000);  
        let hash = await result.tx;
        let tx = await web3.eth.getTransactionReceipt(hash);
        let gasUsed = await tx.gasUsed;
        console.log(" Gas used for an 'Approve' transaction: " + gasUsed);
    }); 

    it("Calculate average gas used by the transferFrom() function", async () => {
        await contract.approve(accounts[1], 100, { from: accounts[0] });  
        let result = await contract.transferFrom(accounts[0], accounts[1], 100, { from: accounts[1] });  
        let hash = await result.tx;
        let tx = await web3.eth.getTransactionReceipt(hash);
        let gasUsed = await tx.gasUsed;
        console.log(" Gas used for an 'Approve' transaction: " + gasUsed);
    });
});

Hinweis: Meine Version von web3 ist 1.2.6