I am using custom playwright reporter (but I think this issue is not only tied to reporter) and there in async OnTestEnd(test, result) I am trying to run exec command. With debugger turned on I see that as soon as program reaches this exec function it skips it and it ends.
const { exec } = require('child_process');
class CustomPDFReporter {
onTestEnd(test, result) {
const cmd = `C:\Program Files\wkhtmltopdf\bin\wkhtmltopdf.exe --quiet --print-media-type ...`;
exec(cmd, (error, stdout, stderr) => {
if (error) {
console.error(`Error executing command: ${error.message}`);
return;
}
if (stderr) {
console.error(`Error output: ${stderr}`);
return;
}
console.log("Generation successful!");
console.log(`Command Output: ${stdout}`);
});
}
}
module.exports = CustomPDFReporter;
Above is one of many attempts to correctly run this function. But it skips all the time.
6
As mentioned in the comments, use execSync instead of the async callback version exec:
const {execSync} = require("child_process");
class CustomPDFReporter {
onTestEnd(test, result) {
const cmd = `C:\Program Files\wkhtmltopdf\bin\wkhtmltopdf.exe --quiet --print-media-type ...`;
try {
const {stdout, stderr} = execSync(cmd);
if (stderr) {
console.error(`Error output: ${stderr}`);
return;
}
console.log("Generation successful!");
console.log(`Command Output: ${stdout}`);
}
catch (error) {
console.error(`Error executing command: ${error.message}`);
}
}
}
module.exports = CustomPDFReporter;
If you happened to be in an async function, you can promisify exec to avoid its callback running in a separate promise chain (shown in vanilla Node):
const {promisify} = require("util");
const exec = promisify(require("child_process").exec);
(async () => {
try {
const {stderr, stdout} = await exec("ls"); // or "dir" on windows
if (stderr) {
console.error(`Error output: ${stderr}`);
}
else {
console.log("Generation successful!");
console.log(`Command Output: ${stdout}`);
}
}
catch (err) {
console.error(`Error executing command: ${err.message}`);
}
})();