Issue with Artillery "before" method

Question

I'm using Artillery to load test a web page and trying to perform an action before the load test begins. I attempted to use the "before" hook and print a console.log inside the testLandingPageFlow method. However, when I run the test, I am not able to print the log which is inside the before block

Here is my code (test.ts):

import testConfig from "../config/login.json";
import { testLandingPageFlow } from "../functional/login.test";
export const config = {
 ...testConfig,
 before: {
 engine: "playwright",
 flowFunction: async()=>{
 await beforeLandingPageFlow()
 }
 },
};
export const scenarios = [
 {
 engine: "playwright",
 flowFunction: testLandingPageFlow,
 },
];
export function $rewriteMetricName(metricName: string) {
 const metrics = ["TTFB", "LCP", "FID", "FCP", "INP", "CLS"];
 for (const metric of metrics) {
 if (metricName.startsWith(`browser.page.${metric}`)) {
 return `browser.page.${metric}`;
 }
 }
 return metricName;
}
export async function beforeLandingPageFlow() {
 console.log("test ***************************************************************************************** ");
}

And here is my config file:

{
 "title": "Browser Load test",
 "target": "https://my-dev-test.com/",
 "plugins": {
 "expect": {
 "enabled": true
 },
 "ensure": {
 "thresholds": [
 {
 "browser.page.TTFB.p95": 800
 },
 {
 "browser.page.LCP.p95": 2500
 },
 {
 "browser.page.INP.p95": 200
 },
 {
 "browser.page.FCP.p95": 2000
 }
 ],
 "conditions": [
 {
 "expression": "vusers.failed == 0"
 },
 {
 "expression": "vusers.completed > 200"
 }
 ]
 }
 },
 "engines": {
 "playwright": {
 "showAllPageMetrics": false,
 "defaultTimeout": 90000,
 "launchOptions": {
 "headless": true
 }
 }
 },
 "phases": [
 {
 "duration": 60,
 "arrivalRate": 1,
 "maxVusers": 1,
 "name": "Ramp up to max 200 virtual users per second for 60s"
 }
 ]
}

Can anyone help me understand why I'm not able to see the log or why is before block not getting executed?

Answer 1

Should work if you remove the quotes, i.e.

flowFunction: "beforeLandingPageFlow" to flowFunction: beforeLandingPageFlow

That way you're passing a reference to the function itself, rather than its name as a string.

• Jayz: Could you please help me with executing the before block?Im still not able to see the log which is inside the before block