61 lines
1.5 KiB
JavaScript
61 lines
1.5 KiB
JavaScript
const SolidityEvent = require('web3/lib/web3/event.js');
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const _ = require('lodash');
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const BigNumber = web3.BigNumber;
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const should = require('chai')
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.use(require('chai-bignumber')(BigNumber))
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.should();
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function inLogs (logs, eventName, eventArgs = {}) {
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const event = logs.find(function (e) {
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if (e.event === eventName) {
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for (const [k, v] of Object.entries(eventArgs)) {
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contains(e.args, k, v);
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}
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return true;
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}
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});
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should.exist(event);
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return event;
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}
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async function inConstruction (contract, eventName, eventArgs = {}) {
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return inTransaction(contract.transactionHash, contract.constructor, eventName, eventArgs);
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}
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async function inTransaction (txHash, emitter, eventName, eventArgs = {}) {
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const receipt = await web3.eth.getTransactionReceipt(txHash);
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const logs = decodeLogs(receipt.logs, emitter.events);
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return inLogs(logs, eventName, eventArgs);
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}
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function contains (args, key, value) {
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if (isBigNumber(args[key])) {
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value.should.be.bignumber.equal(args[key]);
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} else {
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value.should.be.equal(args[key]);
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}
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}
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function isBigNumber (object) {
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return object.isBigNumber ||
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object instanceof BigNumber ||
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(object.constructor && object.constructor.name === 'BigNumber');
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}
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function decodeLogs (logs, events) {
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return _.flatten(logs.map(log =>
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log.topics.filter(topic => topic in events).map(topic => {
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const event = new SolidityEvent(null, events[topic], 0);
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return event.decode(log);
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})
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));
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}
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module.exports = {
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inLogs,
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inConstruction,
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inTransaction,
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};
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