https://github.com/michaelharper/node-js-browser-automation-simple-price-checker
Behold, a simple price-checker thrown together using Node.js and Selenium/WebDriver.
https://github.com/michaelharper/node-js-browser-automation-simple-price-checker
Last synced: 3 months ago
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Behold, a simple price-checker thrown together using Node.js and Selenium/WebDriver.
- Host: GitHub
- URL: https://github.com/michaelharper/node-js-browser-automation-simple-price-checker
- Owner: michaelharper
- Created: 2019-05-24T06:27:37.000Z (almost 6 years ago)
- Default Branch: master
- Last Pushed: 2019-05-24T08:18:58.000Z (almost 6 years ago)
- Last Synced: 2024-12-28T20:46:13.481Z (5 months ago)
- Language: JavaScript
- Size: 142 KB
- Stars: 0
- Watchers: 0
- Forks: 0
- Open Issues: 0
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Metadata Files:
- Readme: README.md
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README
# Browser Automation: Simple Price Checker with Node.js
Behold, a simple price-checker thrown together using Node.js and Selenium/WebDriver.
I've been interested in getting away from Selenium IDE for Firefox for some time and even though Selenium IDE can be extremely effective I needed to move into cross-browser testing. Browser testing aside, import.io has become mostly useless to me since implementing their 500 query/month limitation and I just don't feel like paying their usual prices for my frequency of use.
The below code will load MatterHackers' ColorFabb XT-CF20 Carbon Fiber Filament page and compare it to its standard price:
```
var webdriver = require('selenium-webdriver'),
By = webdriver.By,
until = webdriver.until;
var driver = new webdriver.Builder()
.forBrowser('chrome')
.build();
driver.get('https://www.matterhackers.com/store/3d-printer-filament/colorfabb-xt-cf20-1.75mm');
driver.findElement(By.id('price')).getText().then(function(text) {
console.log('Current price is \'' + text + '\'');
var currentPrice = parseInt(text);
if (currentPrice < 65.95) {
console.log('Discounted price, you should buy!');
}
if (currentPrice !== '') {
console.log('Test passed');
} else {
console.log('Test failed');
}
});
driver.quit();
```
## Here are the invdividual steps:
- The script loads selenium-webdriver for interaction with Chrome.
- It then loads the builder() method boiler-plate.
- WebDriver then gets the MatterHackers page.
- It finds the price element by CSS id and extracts the text value.
- Logs the price to my console (i.e. for me, my shell)
- I convert the price string to an integer for the next step which is a conditional.
- Compares the price to a fixed price variable which I defined before-hand.
- If the price is less, console logs the message "Discounted price, you should buy!". This is probably where I will add an email notification of some sort.
- I threw in standard test pass/fail output in case I wanted to get advanced and compare the results of this script across several days, weeks or months.
- Finally, I exited Chrome.
Here is the end result from my shell:
This script can be automated with something like [Nightwatch.js](http://nightwatchjs.org/) or simply a cron tab. I'm considering adding in either an email notification as part of the conditional but I'm thinking it could be time to try out Twilio's free tier. :D