Update Chrome Capabilities at runtime

Product Forums Katalon Studio
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1

Hi,

My goal is to update the Download path of my Chrome so that I know where to get the download file. This will be run on a VM so the path cannot be hardcoded

Desired download path = ProjectDir + ‘Download’ folder

Also needed to also have safebrowsing.enabled as true to keep the popup “This type of file can harm your computer” away

I tried to manually set everything at Project > Settings > Desired Caps > WebUI > Chrome:

image
image1574×591 36.3 KB

And you can also check it in the com.kms.katalon.core.webui.chrome.properties
{"CHROME_DRIVER":{"prefs":{"download.default_directory":"C:\Users\btp\WorkSpace\btp-mlab\Downloads","safebrowsing.enabled":true}}}

So if I just run my test case it will run smoothly without issue.

HOWEVER, since I cannot hardcode the path since my test cases will be run in a VM I need to update the com.kms.katalon.core.webui.chrome.properties at runtime.

So I have this code:
@Keyword
def updateDownloadPath() {
String strDownloadsPath = RunConfiguration.getProjectDir() + ‘/Download’

		strDownloadsPath = strDownloadsPath.replace('/', '\\')
			
		String data = '{"CHROME_DRIVER":{"prefs":{"download.default_directory":"' + strDownloadsPath + '","safebrowsing.enabled":true}}}'
			
		FileUtils.writeStringToFile(file, data, Charset.defaultCharset(), false)
	}

This will overwrite everything in com.kms.katalon.core.webui.chrome.properties

IF I call this method @BeforeTestCase it will just be ignored the hardcoded data above will still be what Katalon will use. Also I noticed after the runtime the Capabilities disappear

IF I call this method before I click the download button still it is ignored.

Did I miss an important thing for this to work? Will really appreciate if you can help me. Thank you!

2

You did not show us how the file variable is defined.

What is com.kms.katalon.core.webui.chrome.properties?
Is it a file on disk?
Is it a Groovy class name?
Or something else?

3

You update a file
<projectdir>/settings/internal/com.kms.katalon.core.webui.chrome.properties
in the hope that the updated file will be used by Katalon Studio to open a Chrome browser.

I do not think this approach would work. Forget that file.

You should learn how to instantiate ChromeDriver with Desired Capabilities you want. See Guru99; Chrome Options & Desired Capabilities in Selenium: Headless, AdBlocker, Incognito
and other articles that tell you how to start Chrome browser yourself.

Once you have got a Chrome browser in action, you can let Katalon Studio to use that ChromeDriver instance with WebUI.* keyword. Just do

ChromeDriver chrome = ....
DriverFactory.changeWebDriver(chrome)

See https://docs.katalon.com/javadoc/com/kms/katalon/core/webui/driver/DriverFactory.html#changeWebDriver(org.openqa.selenium.WebDriver)

4

Oh I see! Will definitely try this out. Thanks for the helpful input as always @kazurayam

5

I just did this combined with your article here:

Steps:

  1. Removed the Capabilities I setup above that failed
  2. Added your CustomWebDriverFactory
  3. Added the capabilities I needed:

HashMap<String, Object> chromePrefs = new HashMap<String, Object>()
String strDownloadPath = RunConfiguration.getProjectDir() + GlobalVariable.Execution_DownloadPath
strDownloadPath = strDownloadPath.replace(‘/’, ‘\’)
chromePrefs.put(“download.default_directory”, strDownloadPath)
chromePrefs.put(“safebrowsing.enabled”, true)
ChromeOptions options = new ChromeOptions()
options.setExperimentalOption(“prefs”, chromePrefs)

  1. Updated my @BeforeTestCase with this:
WebDriver driver = CustomKeywords.'ck.CustomWebDriverFactory.createWebDriver'()
DriverFactory.changeWebDriver(driver)
//WebUI.openBrowser('')
WebUI.maximizeWindow()

Its much easier now. Thank you so much @kazurayam glad to have you in this community. Cheers!