How to setup Firefox to download files without prompt during Katalon test execution?

Web Testing
3

Hi @Timo_Kuisma1,
For Chrome I can setup Desired Capabilities in Project Settings and it works fine, what I was struggling with was Firefox.

Anyway, I found this topic Opening Firefox with a Specific, non anonymous profile and @kazurayam’s reply helped me to create a script that initializes webdriver and I call it before each TestCase:

import org.openqa.selenium.WebDriver
import org.openqa.selenium.firefox.FirefoxDriver
import org.openqa.selenium.firefox.FirefoxOptions
import org.openqa.selenium.firefox.FirefoxProfile
import org.openqa.selenium.firefox.ProfilesIni
import static com.kms.katalon.core.testobject.ObjectRepository.findTestObject
import com.kms.katalon.core.webui.driver.DriverFactory
import com.kms.katalon.core.webui.driver.WebUIDriverType
import com.kms.katalon.core.webui.keyword.WebUiBuiltInKeywords as WebUI
import internal.GlobalVariable as GlobalVariable

WebUIDriverType executedBrowser = DriverFactory.getExecutedBrowser()
switch(executedBrowser) {
	case WebUIDriverType.FIREFOX_DRIVER:          // "Firefox"
		System.setProperty('webdriver.gecko.driver', DriverFactory.getGeckoDriverPath())
		FirefoxOptions options = new FirefoxOptions()
				
		options.addPreference('marionette', true)
		options.addPreference('browser.download.folderList', 2)
		options.addPreference('browser.helperApps.alwaysAsk.force', false)
		options.addPreference('browser.download.manager.showWhenStarting', false)
		options.addPreference('browser.download.dir', GlobalVariable.downloadPath)
		options.addPreference('browser.download.downloadDir', GlobalVariable.downloadPath)
		options.addPreference('browser.download.defaultFolder', GlobalVariable.downloadPath)
		options.addPreference('browser.helperApps.neverAsk.saveToDisk', 'application/download, application/octet-stream, text/csv')
		
		WebDriver driver = new FirefoxDriver(options);
		// let Katalon Studio to use the WebDriver created here
		DriverFactory.changeWebDriver(driver)
		break
	default:
		WebUI.openBrowser('')
}

If someone wants to download different file types they have to specify the MIME types in ‘browser.helperApps.neverAsk.saveToDisk’ preference:
https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Complete_list_of_MIME_types
Additionally, if the file is PDF you have to add one more preference:
options.addPreference('pdfjs.disabled', true)

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