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I wuold like to handle alerts with Python. What I wuold like to do is:
I made this with Javascript using PhantomJS, but I would made even with Python.
Here is the javascript code:
file test.js:
var webPage = require('webpage');
var page = webPage.create();
var url = 'http://localhost:8001/index.html'
page.onConsoleMessage = function (msg) {
console.log(msg);
}
page.open(url, function (status) {
page.evaluate(function () {
document.getElementById('myButton').click()
});
page.onConsoleMessage = function (msg) {
console.log(msg);
}
page.onAlert = function (msg) {
console.log('ALERT: ' + msg);
};
setTimeout(function () {
page.evaluate(function () {
console.log(document.documentElement.innerHTML)
});
phantom.exit();
}, 1000);
});
file index.html
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<meta charset="utf-8" />
</head>
<body>
<form>
<input id="username" name="username" />
<button id="myButton" type="button" value="Page2">Go to Page2</button>
</form>
</body>
</html>
<script>
document.getElementById("myButton").onclick = function () {
location.href = "page2.html";
};
</script>
file page2.html
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<meta charset="utf-8" />
</head>
<body onload="alert('hello')">
</body>
</html>
This works; it detects the alert on page2.html. Now I made this python script:
test.py
import requests
from test import BasicTest
from selenium import webdriver
from bs4 import BeautifulSoup
url = 'http://localhost:8001/index.html'
def main():
#browser = webdriver.Firefox()
browser = webdriver.PhantomJS()
browser.get(url)
html_source = browser.page_source
#browser.quit()
soup = BeautifulSoup(html_source, "html.parser")
soup.prettify()
request = requests.get('http://localhost:8001/page2.html')
print request.text
#Handle Alert
if __name__ == "__main__":
main();
Now, how can I check if an alert occur on page2.html with Python? First I open the page index.html, then page2.html. I'm at the beginning, so any suggestions will be appreciate.
p.s. I also tested webdriver.Firefox() but it is extremely slow. Also i read this question : Check if any alert exists using selenium with python
but it doesn't work (below is the same previous script plus the solution suggested in the answer).
.....
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import TimeoutException
....
def main():
.....
#Handle Alert
try:
WebDriverWait(browser, 3).until(EC.alert_is_present(),
'Timed out waiting for PA creation ' +
'confirmation popup to appear.')
alert = browser.switch_to.alert()
alert.accept()
print "alert accepted"
except TimeoutException:
print "no alert"
if __name__ == "__main__":
main();
I get the error :
"selenium.common.exceptions.WebDriverException: Message: Invalid Command Method.."
731
PhantomJS uses GhostDriver to implement the WebDriver Wire Protocol, which is how it works as a headless browser within Selenium.
Unfortunately, GhostDriver does not currently support Alerts. Although it looks like they would like help to implement the features:
https://github.com/detro/ghostdriver/issues/20
You could possibly switch to the javascript version of PhantomJS or use the Firefox driver within Selenium.
from selenium import webdriver
from selenium.common.exceptions import NoAlertPresentException
if __name__ == '__main__':
# Switch to this driver and switch_to_alert will fail.
# driver = webdriver.PhantomJS('<Path to Phantom>')
driver = webdriver.Firefox()
driver.set_window_size(1400, 1000)
driver.get('http://localhost:8001/page2.html')
try:
driver.switch_to.alert.accept()
print('Alarm! ALARM!')
except NoAlertPresentException:
print('*crickets*')
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