I am trying to get a custom action running to simply incrementing a value on passing a specific node on the flow.
My custom actions looks like this:
function action(bp: typeof sdk, event: sdk.IO.IncomingEvent, args: any, { user, temp, session } = event.state) {
/** Your code starts below */
let i = undefined
const p = new Promise((resolve, reject) => {
if (i === undefined) {
resolve((i = 0))
} else if (i >= 0) {
resolve(i + 1)
} else {
reject('i cannot be < 0')
}
})
const runCount = async () => {
try {
const counter = await p
i = counter
return (session.count = counter)
} catch (err) {
console.log(err)
}
}
return runCount()
/** Your code ends here */
}
When I runCount() variable i will be set to 0. But then, after in rerun runCount() it does not increment further.
What do I need to do to save the variable so it increments on every runCount() call.
Greetings
Lorenz
I just managed to solve the problem.
I had to declare i = session.count at the beginning.
Now it gets the value out of the session state and increments the state on every call.
Maybe someone gets some help out of this.
Lorenz
Related
hi how can I break out of the for loop ? I want to be able to break out of it in the callback in the if statement
I want this program to create a folder in the given directory and every time it throws an error I want it to change the folder name and add a number to it so when it says that the folder already exists, It'll create a unique folder name until it doesn't throw an error.
I will check for the error code later help me solve this first
const path = require('path');
function folder(folderName) {
for (let i = 1; i <= 10; i++) {
let pathNumber = i;
let fullPath = folderName + pathNumber;
fs.mkdir(path.join("D:", fullPath), (err) => {
if (!err) {
return; // I want to break out of the loop here
}
})
}
}
folder("folder");
You can't write the code that way because the for loop will already be done before any of the fs.mkdir() callbacks are called. They are asynchronous and happen LATER.
If you want to execute one iteration of the loop, including the fs.mkdir() before moving on to any other, then you can use async/await with fs.promises.mkdir().
Here's what a solution could look like with fs.promises.mkdir(). I've also added error handling for the case where all 10 sub-dir names you're trying already exist.
async function folder(folderName) {
let lastError;
for (let pathNumber = 1; pathNumber <= 10; pathNumber++) {
let fullPath = path.join("D:", folderName + pathNumber);
try {
await fs.promises.mkdir(fullPath);
return fullPath;
} catch(e) {
lastError = e;
// ignore error so we keep trying other numbers
}
}
throw lastError;
}
folder("folder").then(fullPath => {
console.log(`dir created: ${fullPath}`);
}).catch(err => {
console.log(err);
});
Much simpler without await
const numFolders = 10,
folders = Array.from(Array(numFolders), (_,i) => `folder${i+1}`), len = folder.length;
let cnt = 0;
const makeFolder = () => {
if (cnt >= len) return; // stop because done
fs.mkdir(path.join("D:", fullPath), (err) => {
if (err) {
makeFolder(); // only call again if error
}
cnt++
}
makeFolder()
I want to check whether the text element changes on x seconds and apply the for loop and conditional structure to verify if the change is applied. If the text is still not changed it will refresh the page and check again
Cypress.Commands.add('checkApprovedStatus', (targetData) =>{
cy.get('div[class^=ui-table-scrollable-body]').contains('tr', targetData).first().parent().within(function(){
cy.get('td').eq(10).children('span[class^=customer-badge]').then(($status) =>
{
//let currStatus = $status.text()
//cy.log(currStatus)
for(let count = 0; count <= 5; count++)
{
let currStatus = $status.text()
cy.log(currStatus)
if (currStatus === 'approved')
{
//if (currStatus.contains('Approved', {matchCase:false}))
//{
cy.log("End to end testing completed. All checks have passed!!")
break
//}
}
else
{
cy.reload()
cy.wait(5000)
$status.trigger('change')
}
}
})
})
})
For loops generally crash and burn in Cypress, but you can use a recursive function to simulate the loop.
When the loop (reload/trigger change) fails to find the status, throw an error to fail the test, or just return.
const checkApprovedStatus = (targetData, attempt = 0) => {
if (attempt === 5) {
// used up all attempts, can either fail the test
throw 'Was never approved'
// or just return without failing
return
}
cy.get('div[class^=ui-table-scrollable-body]')
.contains('tr', targetData).first().parent()
.within(() => {
cy.get('td').eq(10).children('span[class^=customer-badge]')
.then($status => {
if ($status.text() === 'approved') {
cy.log("All checks have passed!!")
} else {
cy.reload()
cy.wait(5000)
$status.trigger('change')
checkApprovedStatus(targetData, ++attempt)
}
})
})
})
I am writing a test case which requires me to reload the page N number of times, and compare its title for a value, if that value does not exists then break the while loop without rising error.
Below is a demo program, similar to the one that I am looking to implement.
/// <reference types='cypress' />
it("Visiting Google",function(){
var webUrl = 'https://html5test.com/'
cy.visit(webUrl)
var loop_iter = 0
while(loop_iter < 5)
{
cy.get('body:nth-child(2) div:nth-child(2) div.header h1:nth-child(1) > em:nth-child(2)').then(($text_data) =>{
if($text_data.text().contains('HTML123'))
{
cy.log(" --> ITERATION = ",loop_iter)
cy.reload()
}
else
{
cy.log("Unknown website")
loop_iter = 10
}
})
loop_iter += 1
}
})
I need a way to break from the while loop when the else part is executed, without rising any error.
The if condition when false returns AssertionError, in such case it should execute else part.
cy.title() is asynchronous (proof is, you need to use .then()), so, the entire while loop ends even before the first .then() triggers. That's how asynchronism works.
You need another approach :
it("Visiting Google", async function () {
var webUrl = 'https://html5test.com/'
cy.visit(webUrl)
for (let i = 0; i < 5; i++) { // You can't await in a 'while' loop
const $text_data = await cy.title();
if ($text_data.includes('HTML')) {
cy.log(" --> ITERATION = ", i)
cy.reload()
}
else {
cy.log("Unknown website")
break;
}
}
})
Please take a look at the sample recipe Page reloads. It uses recursion as suggested in comments.
This is your code adapted to the pattern,
it('reload until "HTML" disappears', () => {
// our utility function
const checkAndReload = (recurse_level = 0) => {
cy.title().then(title => {
if (title.includes('HTML') && recurse_level < 5) {
cy.log(" --> ITERATION = ", recurse_level)
cy.wait(500, { log: false }) // just breathe here
cy.reload() // reload
checkAndReload(recurse_level + 1) // check again
} else {
cy.log("Unknown website")
}
})
}
cy.visit('https://html5test.com/') // start the test by visiting the page
checkAndReload() // and kicking off the first check
})
I have following function:
exports.onDataAdded = functions.database.ref('/Lager/Shafts/Rescue/582/582001').onWrite((change, context) => {
if (change.before.exists()) {
return null;
}
// Exit when the data is deleted.
if (!change.after.exists()) {
return null;
}
const original = change.after.val();
return change.after.ref('/Lager/Shafts/Rescue/583/583001').set(original);
});
I am trying to keep the count of product 1 equal to the count of product two (Can't put it in the same ID for several reasons). It executes the function and says the status is ok but does not update the new value of product 2.
What am I missing?
Please try this, Your function is exiting without executing the update.
exports.onDataAdded = functions.database.ref('/Lager/Shafts/Rescue/582/582001').onWrite((change, context) => {
if (change.after.exists()) {
const original = change.after.val();
return admin.database().ref('/Lager/Shafts/Rescue/583/583001').set(original);
}
// Exit when the data is deleted.
if (!change.after.exists()) {
return null;
}
});
This seems like a noop:
exports.onDataAdded = functions.database.ref('/Lager/Shafts/Rescue/582/582001').onWrite((change, context) => {
if (change.before.exists()) {
return null;
}
Or more precisely: it will only get past this code when you delete /Lager/Shafts/Rescue/582/582001, which is not what you seem to be trying. My guess is that you meant the inverse in your check:
if (!change.before.exists()) {
return null;
}
I'm currently struggling with a function call, when I call the function from an if statement it does work but when I call it from outside it doesn't, my if statement only checks which button was pressed but I'm trying to remove the function from the button and just call it as soon as my app starts.
We will look at fetchJokes() inside jokeContainer.addEventListener('click', event => {
This is my current code:
const jokeContainer = document.querySelector('.joke-container');
const jokesArray = JSON.parse(localStorage.getItem("jokesData"));
// Fetch joke count from API endpoint
async function sizeJokesArray() {
let url = 'https://api.icndb.com/jokes/count';
let data = await (await fetch(url)).json();
data = data.value;
return data;
}
// use API endpoint to fetch the jokes and store it in an array
async function fetchJokes() {
let url = `https://api.icndb.com/jokes/random/${length}`;
let jokesData = [];
let data = await (await fetch(url)).json();
data = data.value;
for (jokePosition in data) {
jokesData.push(data[jokePosition].joke);
}
return localStorage.setItem("jokesData", JSON.stringify(jokesData));;
}
const jokeDispenser = (function() {
let counter = 0; //start counter at position 0 of jokes array
function _change(position) {
counter += position;
}
return {
nextJoke: function() {
_change(1);
counter %= jokesArray.length; // start from 0 if we get to the end of the array
return jokesArray[counter];
},
prevJoke: function() {
if (counter === 0) {
counter = jokesArray.length; // place our counter at the end of the array
}
_change(-1);
return jokesArray[counter];
}
};
})();
// pass selected joke to print on html element
function printJoke(joke) {
document.querySelector('.joke-text p').textContent = joke;
}
sizeJokesArray().then(size => (length = size)); // Size of array in response
jokeContainer.addEventListener('click', event => {
if (event.target.value === 'Fetch') {
fetchJokes(length);
} else if (event.target.value === 'Next') {
printJoke(jokeDispenser.prevJoke(jokesArray));
} else if (event.target.value === 'Prev') {
printJoke(jokeDispenser.nextJoke(jokesArray));
}
});
And I'm trying to do something like this:
// pass selected joke to print on HTML element
function printJoke(joke) {
document.querySelector('.joke-text p').textContent = joke;
}
sizeJokesArray().then(size => (length = size)); // Size of array in response
fetchJokes(length);
jokeContainer.addEventListener('click', event => {
if (event.target.value === 'Next') {
printJoke(jokeDispenser.prevJoke(jokesArray));
} else if (event.target.value === 'Prev') {
printJoke(jokeDispenser.nextJoke(jokesArray));
}
});
By the way, I'm aware that currently, you can't actually iterate through the array elements using prev and next button without refreshing the page but I guess that will be another question.
Couldn't think of a better title.(edits welcomed)
Async functions are, as the name implies, asynchronous. In
sizeJokesArray().then(size => (length = size)); // Size of array in response
fetchJokes(length);
you are calling fetchJokes before length = size is executed because, as you may have guessed, sizeJokesArray is asynchronous.
But since you are already using promises the fix is straightforward:
sizeJokesArray().then(fetchJokes);
If you have not fully understood yet how promises work, maybe https://developers.google.com/web/fundamentals/getting-started/primers/promises helps.